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Date: Thu, 30 Apr 2015 13:48:18 -0400
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From: Matthew Lepinski <mlepinski.ietf@gmail.com>
To: Iljitsch van Beijnum <iljitsch@muada.com>
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Subject: Re: [Idr] [sidr] Levels of BGPsec/RPKI validation, was: Re:  wglc for draft-ietf-sidr-bgpsec-protocol-11
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Iljitsch,

Thank you for the feedback. With regards to bgpsec-protocol and/or
bgpsec-overview, I am not sure what text would be helpful.

For path validation (as opposed to origin validation), the path validation
algorithm returns one of two states. That is, either an update has a valid
signed path or it doesn't. (We discussed previously in SIDR whether there
was a useful third case for path validation, and the working group wasn't
able to come up with one.)

This means that there are six possible states that come from SIDR
validation (assuming you are using both origin validation and path
validation). That is, three possible origin validation states and two
possible path validation states yields six possible joint states. Of
course, one's local policy is free to collapse that state-space if they
wish to treat of some of those states as identical. (Perhaps if origin is
invalid, then it doesn't matter whether path is valid or not ... maybe it
is foolish to care about whether there are signatures on a path if the path
is headed to a bad destination. I don't know ... but it is a matter of
local policy, and it is perfectly fine for different operators to handle
such cases differently.)

In any case, with regards to path validation, I think that in general  one
wants to prefer routes with valid, signed paths over routes that lack
valid, signed paths. However, personally, for path validation, I would not
recommend throwing out all route advertisements where path validation
returns invalid. That is, if the only route you know of to get to a
particular block of address space has a signature that doesn't valid (or
lack signatures because someone in the middle doesn't have BGPsec turned
on), I think it is probably a good idea to use that route despite the lack
of valid signature chain. (But again, this is a matter of local policy, and
I don't want to mandate policy decisions for network operators in the base
protocol specification.)

- Matt Lepinski


On Tue, Apr 28, 2015 at 2:01 PM, Iljitsch van Beijnum <iljitsch@muada.com>
wrote:

> On 28 Jan 2015, at 23:38, Sandra Murphy <sandy@tislabs.com> wrote:
>
> > idr folk, your attention and comments would be appreciated as well.
>
> Since you ask...
>
> I'm sending this to both idr and sidr as I think this needs broader input
> than just sidr. (And it seems I'm no longer on the sidr list.)
>
> I read draft-ietf-sidr-bgpsec-protocol-11 and
> draft-lepinski-bgpsec-overview-00.txt as well as RFC 6483.
>
> I think what's lacking here is any discussion of what happens when
> certificates etc expire. Please stay with me for a bit:
>
> RFC 6483 talks about RPKI route validation, which suggests that there are
> three possible states:
>
> valid
> unknown
> invalid
>
> where valid is preferred over unknown and unknown over invalid, and:
>
> "It is a matter of local routing policy as to whether routes with an
> "invalid" validity state are considered to be ineligible for further
> consideration in a route selection process."
>
> Actually, I think the only reasonable approach is to filter out invalids
> and prefer valids over unknowns. The important part here is that if there's
> a ROA for 193.0.0.0/21 and then someone announces a more specific like
> 193.0.7.0/24, that /24 will be "invalid", so even in partial deployment
> RPKI users are protected against malicious or accidental more specifics.
> But if invalids are accepted, even with a very low preference, then they
> still get to divert traffic.
>
> So far, so good.
>
> But now what if a certificate expires? We know from the web that this is
> extremely common. If an expired certificate means the prefixes involved are
> marked invalid, this means that filtering invalids becomes very
> problematic: not only will prefixes randomly drop off the net as people
> forget to generate or install certificates or RPKI caches get stale, but if
> things get really bad the resulting lack of connectivity makes it
> impossible to correct the problem...
>
> So what we need is for expired certificates to make the affected prefixes
> revert to unknown rather than invalid. Turns out, that's what happens today:
>
> http://mailman.nanog.org/pipermail/nanog/2014-December/071907.html
>
> However, unless this is specified in one of the related documents other
> than the three mentioned above, this seems to be an implementation choice.
>
> I think the above issue needs to be discussed in an update of RFC 6483 or
> in one of the BGPsec documents.
>
> And there's probably a bit more to think about: wouldn't it make sense to
> be able to filter on the signature algorithm at some point during the
> transition from one algorithm to the next? Or to be able to filter on
> "expired" explicitly? A binary valid/invalid isn't enough.
> Valid/unknown/invalid is workable, but maybe four or five levels is even
> better.
>
> (And have a look at how this works in practice:
> http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/command/irg-cr-book/bgp-m1.html
> search for PEX.)
>
> _______________________________________________
> sidr mailing list
> sidr@ietf.org
> https://www.ietf.org/mailman/listinfo/sidr
>

--089e013a0ba87620580514f4b3ed
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Iljitsch,<div><br></div><div>Thank you for the feedback. W=
ith regards to bgpsec-protocol and/or bgpsec-overview, I am not sure what t=
ext would be helpful.</div><div><br></div><div>For path validation (as oppo=
sed to origin validation), the path validation algorithm returns one of two=
 states. That is, either an update has a valid signed path or it doesn&#39;=
t. (We discussed previously in SIDR whether there was a useful third case f=
or path validation, and the working group wasn&#39;t able to come up with o=
ne.)</div><div><br></div><div>This means that there are six possible states=
 that come from SIDR validation (assuming you are using both origin validat=
ion and path validation). That is, three possible origin validation states =
and two possible path validation states yields six possible joint states. O=
f course, one&#39;s local policy is free to collapse that state-space if th=
ey wish to treat of some of those states as identical. (Perhaps if origin i=
s invalid, then it doesn&#39;t matter whether path is valid or not ... mayb=
e it is foolish to care about whether there are signatures on a path if the=
 path is headed to a bad destination. I don&#39;t know ... but it is a matt=
er of local policy, and it is perfectly fine for different operators to han=
dle such cases differently.)</div><div><br></div><div>In any case, with reg=
ards to path validation, I think that in general =C2=A0one wants to prefer =
routes with valid, signed paths over routes that lack valid, signed paths. =
However, personally, for path validation, I would not recommend throwing ou=
t all route advertisements where path validation returns invalid. That is, =
if the only route you know of to get to a particular block of address space=
 has a signature that doesn&#39;t valid (or lack signatures because someone=
 in the middle doesn&#39;t have BGPsec turned on), I think it is probably a=
 good idea to use that route despite the lack of valid signature chain. (Bu=
t again, this is a matter of local policy, and I don&#39;t want to mandate =
policy decisions for network operators in the base protocol specification.)=
</div><div><br></div><div>- Matt Lepinski</div><div><br></div></div><div cl=
ass=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Apr 28, 2015 at =
2:01 PM, Iljitsch van Beijnum <span dir=3D"ltr">&lt;<a href=3D"mailto:iljit=
sch@muada.com" target=3D"_blank">iljitsch@muada.com</a>&gt;</span> wrote:<b=
r><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:=
1px #ccc solid;padding-left:1ex">On 28 Jan 2015, at 23:38, Sandra Murphy &l=
t;<a href=3D"mailto:sandy@tislabs.com">sandy@tislabs.com</a>&gt; wrote:<br>
<br>
&gt; idr folk, your attention and comments would be appreciated as well.<br=
>
<br>
Since you ask...<br>
<br>
I&#39;m sending this to both idr and sidr as I think this needs broader inp=
ut than just sidr. (And it seems I&#39;m no longer on the sidr list.)<br>
<br>
I read draft-ietf-sidr-bgpsec-protocol-11 and draft-lepinski-bgpsec-overvie=
w-00.txt as well as RFC 6483.<br>
<br>
I think what&#39;s lacking here is any discussion of what happens when cert=
ificates etc expire. Please stay with me for a bit:<br>
<br>
RFC 6483 talks about RPKI route validation, which suggests that there are t=
hree possible states:<br>
<br>
valid<br>
unknown<br>
invalid<br>
<br>
where valid is preferred over unknown and unknown over invalid, and:<br>
<br>
&quot;It is a matter of local routing policy as to whether routes with an &=
quot;invalid&quot; validity state are considered to be ineligible for furth=
er consideration in a route selection process.&quot;<br>
<br>
Actually, I think the only reasonable approach is to filter out invalids an=
d prefer valids over unknowns. The important part here is that if there&#39=
;s a ROA for <a href=3D"http://193.0.0.0/21" target=3D"_blank">193.0.0.0/21=
</a> and then someone announces a more specific like <a href=3D"http://193.=
0.7.0/24" target=3D"_blank">193.0.7.0/24</a>, that /24 will be &quot;invali=
d&quot;, so even in partial deployment RPKI users are protected against mal=
icious or accidental more specifics. But if invalids are accepted, even wit=
h a very low preference, then they still get to divert traffic.<br>
<br>
So far, so good.<br>
<br>
But now what if a certificate expires? We know from the web that this is ex=
tremely common. If an expired certificate means the prefixes involved are m=
arked invalid, this means that filtering invalids becomes very problematic:=
 not only will prefixes randomly drop off the net as people forget to gener=
ate or install certificates or RPKI caches get stale, but if things get rea=
lly bad the resulting lack of connectivity makes it impossible to correct t=
he problem...<br>
<br>
So what we need is for expired certificates to make the affected prefixes r=
evert to unknown rather than invalid. Turns out, that&#39;s what happens to=
day:<br>
<br>
<a href=3D"http://mailman.nanog.org/pipermail/nanog/2014-December/071907.ht=
ml" target=3D"_blank">http://mailman.nanog.org/pipermail/nanog/2014-Decembe=
r/071907.html</a><br>
<br>
However, unless this is specified in one of the related documents other tha=
n the three mentioned above, this seems to be an implementation choice.<br>
<br>
I think the above issue needs to be discussed in an update of RFC 6483 or i=
n one of the BGPsec documents.<br>
<br>
And there&#39;s probably a bit more to think about: wouldn&#39;t it make se=
nse to be able to filter on the signature algorithm at some point during th=
e transition from one algorithm to the next? Or to be able to filter on &qu=
ot;expired&quot; explicitly? A binary valid/invalid isn&#39;t enough. Valid=
/unknown/invalid is workable, but maybe four or five levels is even better.=
<br>
<br>
(And have a look at how this works in practice: <a href=3D"http://www.cisco=
.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/command/irg-cr-book/bgp-m1.htm=
l" target=3D"_blank">http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iprou=
te_bgp/command/irg-cr-book/bgp-m1.html</a> search for PEX.)<br>
<br>
_______________________________________________<br>
sidr mailing list<br>
<a href=3D"mailto:sidr@ietf.org">sidr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sidr" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/sidr</a><br>
</blockquote></div><br></div>

--089e013a0ba87620580514f4b3ed--


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From: Matthew Lepinski <mlepinski.ietf@gmail.com>
To: Iljitsch van Beijnum <iljitsch@muada.com>, Randy Bush <randy@psg.com>
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Subject: Re: [Idr] [sidr] Levels of BGPsec/RPKI validation, was: Re:  wglc for draft-ietf-sidr-bgpsec-protocol-11
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My apologies for dropping the distinction between "Path Unsigned" (no
BGPsec attribute) vs "Path Not Valid" (Path validation algorithm fails to
validate). You are certainly correct that there are Nine possible states
(and Randy's table is correct).

That being said, I have some concern about treating "Path Unsigned"
differently than "Path Not Valid", since it is trivial for a malicious
adversary to transform "Path Not Valid" into "Path Unsigned" if doing so
will yield better treatment for some bad route.

On Thu, Apr 30, 2015 at 4:39 PM, Iljitsch van Beijnum <iljitsch@muada.com>
wrote:

> On 30 Apr 2015, at 19:48, Matthew Lepinski <mlepinski.ietf@gmail.com>
> wrote:
>
> > For path validation (as opposed to origin validation), the path
> validation algorithm returns one of two states. That is, either an update
> has a valid signed path or it doesn't. (We discussed previously in SIDR
> whether there was a useful third case for path validation, and the working
> group wasn't able to come up with one.)
>
> I think expired certificates qualifies. And a case can be made for strong
> crypto algo vs weak crypto algo is a fourth one.
>
> > This means that there are six possible states that come from SIDR
> validation (assuming you are using both origin validation and path
> validation). That is, three possible origin validation states and two
> possible path validation states yields six possible joint states.
>
> Actually nine, assuming < 100% BGPsec deployment:
>
> 1. BGPsec=valid, RPKI=valid
> 2. BGPsec=valid, RPKI=unknown
> 3. BGPsec=valid, RPKI=invalid
> 4. no BGPsec, RPKI=valid
> 5. no BGPsec, RPKI=unknown
> 6. no BGPsecd, RPKI=invalid
> 7. BGPsec=notvalid, RPKI=valid
> 8. BGPsec=notvalid, RPKI=unknown
> 9. BGPsec=notvalid, RPKI=invalid
>
> Only with type 1 can we be sure that the prefix is advertised legitimately.
>
> Type 5 indicates no BGPsec or RPKI deployment and may or may not be
> legitimate. These should have a lower local_pref than type 1. Type 2 is
> strange, but can probably be treated the same as type 5, or perhaps a
> loc_pref higher than 5 but lower than 1.
>
> Types 3, 6 and 9 are bad news, as they may be unauthorized more specifics,
> so it's important to filter these.
>
> Type 4 can happen because BGPsec hasn't been fully deployed yet (remember
> that the whole path must support it while RPKI can be deployed by just the
> "end" AS) but once that's no longer common it will be the attack vector of
> choice because it's easy to fake the origin AS if there's no BGPsec, so at
> some point, these need to be filtered, too.
>
> That leaves 7 and 8, which SHOULD be filtered if they're legitimate BGPsec
> validation failures and not incidental mistakes such as expired
> certificates.
>
> > it is perfectly fine for different operators to handle such cases
> differently.)
>
> Famous last words. Obviously we don't want to be overly prescriptive, but
> I don't think there's as much room for creativity as you suggest.
>
> > However, personally, for path validation, I would not recommend throwing
> out all route advertisements where path validation returns invalid. That
> is, if the only route you know of to get to a particular block of address
> space has a signature that doesn't valid (or lack signatures because
> someone in the middle doesn't have BGPsec turned on), I think it is
> probably a good idea to use that route despite the lack of valid signature
> chain.
>
> Actually I don't think that case can happen. Consider the following path:
>
> 6 5 4 3 2 1
>
> If AS 4 doesn't support BGPsec but the others do, then AS 3 will convert
> the BGPsec_Path to an AS_PATH, removing all the signatures. ASes 5 and 6
> are not in the position to repair this, so as far as they're concerned, the
> path is completely unprotected.
>
> However, what you say here is problematic:
>
> > That is, if the only route you know of to get to a particular block of
> address space has a signature that doesn't valid (or lack signatures
> because someone in the middle doesn't have BGPsec turned on), I think it is
> probably a good idea to use that route despite the lack of valid signature
> chain.
>
> Considering whether a route is "the only route you know" is explicitly
> forbidden by RFC 4271:
>
>   "The function that calculates the degree of preference for a given
>    route SHALL NOT use any of the following as its inputs: the existence
>    of other routes, the non-existence of other routes, or the path
>    attributes of other routes."
>
> However, you can get the same result by simply giving the invalid path a
> low local preference.
>
> However 2, the real problem with allowing prefixes that don't RPKI/BGPsec
> validate is that these invalid prefixes could be more specifics of
> legitimate prefixes, and no matter how high the local_pref of the valid
> prefixes and low the local_pref of the invalid more specifics, the packets
> will be forwarded as per the invalid more specifics.
>
> Therefore, the only workable approach is to completely filter out prefixes
> that don't validate.
>
> However, the downside of such a strict policy is that if the certificates
> used for BGPsec signatures expire, the path will become notvalid and the
> associated prefixes disappear from the internet. That's why we need the
> ability to treat paths that don't validate because of expired certificates
> differently from paths that don't validate for other reasons.
>
>

--001a1134ca9cfc3e5c05150a2939
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">My apologies for dropping the distinction between &quot;Pa=
th Unsigned&quot; (no BGPsec attribute) vs &quot;Path Not Valid&quot; (Path=
 validation algorithm fails to validate). You are certainly correct that th=
ere are Nine possible states (and Randy&#39;s table is correct).<div><br>Th=
at being said, I have some concern about treating &quot;Path Unsigned&quot;=
 differently than &quot;Path Not Valid&quot;, since it is trivial for a mal=
icious adversary to transform &quot;Path Not Valid&quot; into &quot;Path Un=
signed&quot; if doing so will yield better treatment for some bad route.</d=
iv></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, =
Apr 30, 2015 at 4:39 PM, Iljitsch van Beijnum <span dir=3D"ltr">&lt;<a href=
=3D"mailto:iljitsch@muada.com" target=3D"_blank">iljitsch@muada.com</a>&gt;=
</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=3D"">On 30 Apr=
 2015, at 19:48, Matthew Lepinski &lt;<a href=3D"mailto:mlepinski.ietf@gmai=
l.com">mlepinski.ietf@gmail.com</a>&gt; wrote:<br>
<br>
&gt; For path validation (as opposed to origin validation), the path valida=
tion algorithm returns one of two states. That is, either an update has a v=
alid signed path or it doesn&#39;t. (We discussed previously in SIDR whethe=
r there was a useful third case for path validation, and the working group =
wasn&#39;t able to come up with one.)<br>
<br>
</span>I think expired certificates qualifies. And a case can be made for s=
trong crypto algo vs weak crypto algo is a fourth one.<br>
<span class=3D""><br>
&gt; This means that there are six possible states that come from SIDR vali=
dation (assuming you are using both origin validation and path validation).=
 That is, three possible origin validation states and two possible path val=
idation states yields six possible joint states.<br>
<br>
</span>Actually nine, assuming &lt; 100% BGPsec deployment:<br>
<br>
1. BGPsec=3Dvalid, RPKI=3Dvalid<br>
2. BGPsec=3Dvalid, RPKI=3Dunknown<br>
3. BGPsec=3Dvalid, RPKI=3Dinvalid<br>
4. no BGPsec, RPKI=3Dvalid<br>
5. no BGPsec, RPKI=3Dunknown<br>
6. no BGPsecd, RPKI=3Dinvalid<br>
7. BGPsec=3Dnotvalid, RPKI=3Dvalid<br>
8. BGPsec=3Dnotvalid, RPKI=3Dunknown<br>
9. BGPsec=3Dnotvalid, RPKI=3Dinvalid<br>
<br>
Only with type 1 can we be sure that the prefix is advertised legitimately.=
<br>
<br>
Type 5 indicates no BGPsec or RPKI deployment and may or may not be legitim=
ate. These should have a lower local_pref than type 1. Type 2 is strange, b=
ut can probably be treated the same as type 5, or perhaps a loc_pref higher=
 than 5 but lower than 1.<br>
<br>
Types 3, 6 and 9 are bad news, as they may be unauthorized more specifics, =
so it&#39;s important to filter these.<br>
<br>
Type 4 can happen because BGPsec hasn&#39;t been fully deployed yet (rememb=
er that the whole path must support it while RPKI can be deployed by just t=
he &quot;end&quot; AS) but once that&#39;s no longer common it will be the =
attack vector of choice because it&#39;s easy to fake the origin AS if ther=
e&#39;s no BGPsec, so at some point, these need to be filtered, too.<br>
<br>
That leaves 7 and 8, which SHOULD be filtered if they&#39;re legitimate BGP=
sec validation failures and not incidental mistakes such as expired certifi=
cates.<br>
<span class=3D""><br>
&gt; it is perfectly fine for different operators to handle such cases diff=
erently.)<br>
<br>
</span>Famous last words. Obviously we don&#39;t want to be overly prescrip=
tive, but I don&#39;t think there&#39;s as much room for creativity as you =
suggest.<br>
<span class=3D""><br>
&gt; However, personally, for path validation, I would not recommend throwi=
ng out all route advertisements where path validation returns invalid. That=
 is, if the only route you know of to get to a particular block of address =
space has a signature that doesn&#39;t valid (or lack signatures because so=
meone in the middle doesn&#39;t have BGPsec turned on), I think it is proba=
bly a good idea to use that route despite the lack of valid signature chain=
.<br>
<br>
</span>Actually I don&#39;t think that case can happen. Consider the follow=
ing path:<br>
<br>
6 5 4 3 2 1<br>
<br>
If AS 4 doesn&#39;t support BGPsec but the others do, then AS 3 will conver=
t the BGPsec_Path to an AS_PATH, removing all the signatures. ASes 5 and 6 =
are not in the position to repair this, so as far as they&#39;re concerned,=
 the path is completely unprotected.<br>
<br>
However, what you say here is problematic:<br>
<span class=3D""><br>
&gt; That is, if the only route you know of to get to a particular block of=
 address space has a signature that doesn&#39;t valid (or lack signatures b=
ecause someone in the middle doesn&#39;t have BGPsec turned on), I think it=
 is probably a good idea to use that route despite the lack of valid signat=
ure chain.<br>
<br>
</span>Considering whether a route is &quot;the only route you know&quot; i=
s explicitly forbidden by RFC 4271:<br>
<br>
=C2=A0 &quot;The function that calculates the degree of preference for a gi=
ven<br>
=C2=A0 =C2=A0route SHALL NOT use any of the following as its inputs: the ex=
istence<br>
=C2=A0 =C2=A0of other routes, the non-existence of other routes, or the pat=
h<br>
=C2=A0 =C2=A0attributes of other routes.&quot;<br>
<br>
However, you can get the same result by simply giving the invalid path a lo=
w local preference.<br>
<br>
However 2, the real problem with allowing prefixes that don&#39;t RPKI/BGPs=
ec validate is that these invalid prefixes could be more specifics of legit=
imate prefixes, and no matter how high the local_pref of the valid prefixes=
 and low the local_pref of the invalid more specifics, the packets will be =
forwarded as per the invalid more specifics.<br>
<br>
Therefore, the only workable approach is to completely filter out prefixes =
that don&#39;t validate.<br>
<br>
However, the downside of such a strict policy is that if the certificates u=
sed for BGPsec signatures expire, the path will become notvalid and the ass=
ociated prefixes disappear from the internet. That&#39;s why we need the ab=
ility to treat paths that don&#39;t validate because of expired certificate=
s differently from paths that don&#39;t validate for other reasons.<br>
<br>
</blockquote></div><br></div>

--001a1134ca9cfc3e5c05150a2939--


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To: Matthew Lepinski <mlepinski.ietf@gmail.com>
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Subject: Re: [Idr] [sidr] Levels of BGPsec/RPKI validation, was: Re:  wglc for draft-ietf-sidr-bgpsec-protocol-11
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On 01 May 2015, at 21:24, Matthew Lepinski <mlepinski.ietf@gmail.com> =
wrote:

> You are certainly correct that there are Nine possible states (and =
Randy's table is correct).

Randy's table? I must have missed that one.

> That being said, I have some concern about treating "Path Unsigned" =
differently than "Path Not Valid", since it is trivial for a malicious =
adversary to transform "Path Not Valid" into "Path Unsigned" if doing so =
will yield better treatment for some bad route.

That's a good point. But then, how do you treat those? By filtering the =
affected prefixes? You can only do that once _all_ paths are signed.

So basically, we're stuck with our AS path filters until BGPsec =
deployment hits 100%.

It would have been better if BGPsec would have had provisions for =
partial deployment, so that you can have a path that is partially BGPsec =
protected even if it can't be fully be BGPsec-protected. That way, the =
filtering issue shrinks in scope as the BGPsec-enabled core grows and =
non-BGPsec branches turn into leaves and finally go away.=


From nobody Fri May  1 23:58:51 2015
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Subject: [Idr] I-D Action: draft-ietf-idr-ls-distribution-impl-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Inter-Domain Routing Working Group of the IETF.

        Title           : BGP Link-State Information Distribution Implementation Report
        Authors         : Hannes Gredler
                          Balaji Rajagopalan
                          Chris Bowers
                          Saikat Ray
                          Manish Bhardwaj
	Filename        : draft-ietf-idr-ls-distribution-impl-04.txt
	Pages           : 15
	Date            : 2015-05-01

Abstract:
   This document is an implementation report for the BGP Link-State
   Information Distribution protocol.  The editors did not verify the
   accuracy of the information provided by respondents.  The respondents
   are experts with the implementations they reported on, and their
   responses are considered authoritative for the implementations for
   which their responses represent.  Respondents were asked to only use
   the YES answer if the feature had at least been tested in the lab.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-ls-distribution-impl/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-idr-ls-distribution-impl-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-ls-distribution-impl-04


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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>It would have been better if BGPsec would have had provisions for partial =
deployment,=20
>so that you can have a path that is partially BGPsec protected even if it =
can't be fully be BGPsec-protected.=20
>That way, the filtering issue shrinks in scope as the BGPsec-enabled core =
grows=20
>and non-BGPsec branches turn into leaves and finally go away.

=93path that is partially BGPsec protected=94 =96 I wouldn=92t call that =
=93partial deployment=94. =20
That is just partial path signing.
Partial deployment, on the other hand, connotes that there are islands with=
in which=20
BGPsec is deployed, and the rest of Internet is non-BGPsec.=20
In this sense, partial deployment is synonymous with incremental deployment=
.  =20
Let us discuss incremental deployment and =93path that is partially BGPsec =
protected=94 separately.

(1) Incremental Deployment:

BGPsec is amenable to incremental deployment, and does provide benefit to e=
arly adopters within BGPsec islands.=20
For examples, you can have a BGPsec island in Asia in which, say, 30K prefi=
xes are originated.=20
And another BGPsec island in Europe in which, say, 50K prefixes are origina=
ted.=20
All prefix-routes for those 30K (or 50K) prefixes within an island have the=
 full protection of=20
BGPsec while they originate from an AS within the island and propagate full=
y signed to other=20
ASes within the same island. When those prefix-routes cross from a BGPsec i=
sland=20
into non-BGPsec Internet, then they lose the signatures entirely and lose t=
he protection.

Down the road, when ASes from the two islands in this example interconnect =
using=20
BGPsec peering, then the combined BGPsec island will be much bigger, provid=
ing protection=20
for prefix-routes for all 80K prefixes while they originate from an AS with=
in the combined island=20
and propagate fully signed to other ASes within the combined island.=20
So incremental deployment can start within islands,=20
and grow as islands expand and/or interconnect with each other.

Some additional thoughts on incremental deployment can be found in Section =
6.3 of=20
the BGPSEC design discussion document:

https://tools.ietf.org/html/draft-sriram-bgpsec-design-choices-07#page-21=20
=20
(2) =93path that is partially BGPsec protected=94 or Partial Path Signing
If an update with partially signed path is given some sort of preference ov=
er an unsigned update=20
that would encourage cut-and-paste attacks.  Additional thoughts on why par=
tial path signing=20
is disallowed can be found in Section 6.4 of the BGPSEC design discussion d=
ocument:

https://tools.ietf.org/html/draft-sriram-bgpsec-design-choices-07#page-21=20
=20
Sriram


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Subject: Re: [Idr] [sidr] Levels of BGPsec/RPKI validation, was: Re:  wglc for draft-ietf-sidr-bgpsec-protocol-11
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On 03 May 2015, at 4:51, Sriram, Kotikalapudi =
<kotikalapudi.sriram@nist.gov> wrote:

> =93path that is partially BGPsec protected=94 =96 I wouldn=92t call =
that =93partial deployment=94. =20
> That is just partial path signing.

The latter is a way to allow for the former.

> Partial deployment, on the other hand, connotes that there are islands =
within which=20
> BGPsec is deployed, and the rest of Internet is non-BGPsec.

Hm, could be islands of BGPsec in a non-BGPsec sea or islands of =
non-BGPsec in a BGPsec sea. In practice, what will happen very soon is =
that there will be a BGPsec core with non-BGPsec leaves and branches.

> (1) Incremental Deployment:

> BGPsec is amenable to incremental deployment, and does provide benefit =
to early adopters within BGPsec islands.=20
> For examples, you can have a BGPsec island in Asia in which, say, 30K =
prefixes are originated.=20
> And another BGPsec island in Europe in which, say, 50K prefixes are =
originated.=20
> All prefix-routes for those 30K (or 50K) prefixes within an island =
have the full protection of=20
> BGPsec while they originate from an AS within the island and propagate =
fully signed to other=20
> ASes within the same island.

Sure. But what if one of those BGPsec-capable ASes has a customer that =
doesn't run BGPsec? So:

5+ 4+ 3+ 2+ 1-

(where + is BGPsec and - is no BGPsec)

In this case the entire path will be unprotected, even though four of =
the five ASes in the path are capable of using BGPsec. I fair argument =
can be made that if it's only the origin AS that's non-BGPsec, the =
protection afforded is very nearly as good as in the case where the =
complete path is BGPsec-protected.

And in general it would be better for BGPsec to be more opportunistic =
and protect whatever it can protect, even if that falls short of full =
end-to-end protection. Every protected hop takes away an opportunity for =
malicious parties to do bad things.=


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References: <20150409140218.22830.31521.idtracker@ietfa.amsl.com> <D14BFEEA.4CC52%wesley.george@twcable.com> <02e401d072e4$4f5a1cc0$ee0e5640$@ndzh.com> <D14C3347.A438A%aretana@cisco.com> <alpine.GSO.2.00.1504161723090.17655@clubhouse-1.cisco.com> <001f01d07b3f$13ee12f0$3bca38d0$@ndzh.com> <B17A6910EEDD1F45980687268941550F0CB90981@MISOUT7MSGUSRCD.ITServices.sbc.com> <alpine.GSO.2.00.1504201548460.29478@clubhouse-1.cisco.com> <20150421202647.GB1600@pfrc> <alpine.GSO.2.00.1504220511220.16159@clubhouse-2.cisco.com> <D15D7DB9.4E672%wesley.george@twcable.com> <002d01d07d55$168b3b60$43a1b220$@ndzh.com> <alpine.GSO.2.00.1504230812570.5542@clubhouse-1.cisco.com>
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-as-migration-04.txt
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Juan:

Thank you for this feedback.  I will pass this along to Alvaro and discuss
it with Wes. 

Sue 

-----Original Message-----
From: Juan Alcaide [mailto:jalcaide@cisco.com] 
Sent: Thursday, April 23, 2015 8:17 AM
To: Susan Hares
Cc: 'George, Wes'; 'Jeffrey Haas'; idr@ietf.org; jgralak@juniper.net;
'UTTARO, JAMES'
Subject: RE: [Idr] I-D Action: draft-ietf-idr-as-migration-04.txt


Let me be clear. I don't want to revise the FSM.

With the current FSM, internal BGP alias feature will work if we are strict
in how it's implemented. Otherwise, we may have interoperability problems.
Basically, it needs to be specified with AS is tried first.

Just want to make sure the draft says this explicetely (in its current form
it is implied).

-J


> WG, George, Jeff and Juan:
>
> A revision to the state machine in BGP is outside the scope of this draft.
For those who want to participate in a revision of the state machine, please
send me your names.   I will put you on a design team to examine the state
machine and provide a draft for the WG group.
>
> Sue
>
>
> WG] I think the point here is that even this more basic guidance needs to
be bashed against what the FSM currently does vs what the spec says it
should do (or worse, where the spec is ambiguous and has likely been handled
different ways by different vendors) before we can determine where/if it's
actually necessary to provide explicit guidance on the matter. The
philosophy of the draft has generally been to not be overly proscriptive and
discuss the desired behavior, and then let the implementers figure out how
that has to work in the guts of their BGP implementation, such as within
their implementation of FSM. If you can point to guidance that we need to
provide to prevent the desired behavior from being critically altered if it
is incorrectly implemented at the FSM level or it otherwise creates
interoperability issues for something that is pretty much only locally
significant, I can see about adding it, but you will definitely need to
provide text, as I am by no means an expert on how this interacts with the
FSM.
>


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From: "Sriram, Kotikalapudi" <kotikalapudi.sriram@nist.gov>
To: Iljitsch van Beijnum <iljitsch@muada.com>
Thread-Topic: [sidr] Levels of BGPsec/RPKI validation, was: Re: [Idr] wglc for draft-ietf-sidr-bgpsec-protocol-11
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Subject: Re: [Idr] [sidr] Levels of BGPsec/RPKI validation, was: Re:  wglc for draft-ietf-sidr-bgpsec-protocol-11
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>In practice, what will happen very soon is that there will be a
>BGPsec core with non-BGPsec leaves and branches.

That is a possibility. To encourage leaves (stub ASes) to get on board with=
 BGPsec, the specification=20
allows for BGPsec capability to be negotiated independently in each directi=
on (send and receive).
This means that a stub AS can negotiate with its upstream to send signed up=
dates (to the upstream)=20
but receive only unsigned updates (i.e. trusts its upstream).
Thus it avoids processing and memory costs associated with processing signe=
d updates and storing them.=20
This facilitates the stub AS to avoid expensive HW upgrade, but still benef=
it from BGPsec.
Please see Section 2 of the BGPsec specification. Also see Sections 6.5 and=
 6.6 in the=20
BGPSEC design discussion document:
http://tools.ietf.org/html/draft-sriram-bgpsec-design-choices-07#page-21=20

>Sure. But what if one of those BGPsec-capable ASes has a customer that doe=
sn't
>run BGPsec? So:
>
>5+ 4+ 3+ 2+ 1-
>
>(where + is BGPsec and - is no BGPsec)
>
>In this case the entire path will be unprotected, even though four of the =
five
>ASes in the path are capable of using BGPsec. I fair argument can be made =
that
>if it's only the origin AS that's non-BGPsec, the protection afforded is v=
ery nearly
>as good as in the case where the complete path is BGPsec-protected.
>

Steve Kent summed it up nicely (in his most recent post on the SIDR list) a=
bout the pitfalls=20
of allowing partial path signing.=20
In your specific example above, let us say, there is also an 8+ who is *mal=
icious* and a BGPsec neighbor of 5+.
8+ does not peer with 1-, but nevertheless sends an update with the followi=
ng malicious AS path to 5+:

8+ 1-  (for the same NLRI as in your example above)

8+ is basically faking that it got an unsigned update from 1- and=20
it is forwarding the same to 5+ with a signature (i.e. 8+ signing to 5+).
How will 5+ know that the partially signed update with AS path of {4+ 3+ 2+=
 1-} is legitimate=20
and that the other partially signed update with AS path {8+ 1-} is maliciou=
s?=20
It has no way of knowing that.

Sriram =20


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Subject: Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015
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The IDR mail list has received no comments on the the revision of the
draft-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for
this draft, this call is extended to 5/18/2015.   Unless this draft receives
support comments, this draft will not be forwarded to the IESG. 

 

You can see the final revision at the following: 

 

http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt

 

 

Sue Hares and John Scudder  


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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>The IDR =
mail list has received no comments on the the revision of the =
draft-ietf-idr-flowspec-redirect-rt-bis-04.txt.&nbsp; &nbsp;Due to =
earlier support for this draft, this call is extended to 5/18/2015. =
&nbsp;&nbsp;Unless this draft receives support comments, this draft will =
not be forwarded to the IESG. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>You can see =
the final revision at the following: <o:p></o:p></p><p =
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href=3D"http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04=
.txt">http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.t=
xt</a><o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sue Hares =
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Subject: Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015
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On Tue, May 05, 2015 at 09:11:22PM -0400, Susan Hares wrote:
> The IDR mail list has received no comments on the the revision of the
> draft-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for
> this draft, this call is extended to 5/18/2015.   Unless this draft receives
> support comments, this draft will not be forwarded to the IESG. 

To reiterate, all that is require is for some bodies to agree that the code
point registration policy is okay.

Come on, support it.  You know you want to...

-- Jeff


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The 2 Week WG LC for draft-ietf-custom-decision (4/20 to 5/4/2015) as
completed, and the WG does not have consensus on the
draft-ietf-custom-decision.  The WG has provided feedback to the authors on
clarifications to the draft. 

 

Sue Hares and John Scudder 


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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>The 2 Week =
WG LC for draft-ietf-custom-decision (4/20 to 5/4/2015) as completed, =
and the WG does not have consensus on the =
draft-ietf-custom-decision.&nbsp; The WG has provided feedback to the =
authors on clarifications to the draft. <o:p></o:p></p><p =
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Subject: [Idr] IDR interim on 4/27/2015 - BGP Yang modules
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On 4/27/2015 the WG held a very short interim (15 minutes) where the authors
of the following two IDR yang modules announced their intention to merge
these drafts using the draft-shaikh-idr-bgp-model as the basis for the
merge,. 

 

http://datatracker.ietf.org/doc/draft-shaikh-idr-bgp-model/

 

http://datatracker.ietf.org/doc/draft-zhdankin-idr-bgp-cfg/

 

The merged draft will be presented at the next IDR interim on June 1st.
Please send your comments on these two drafts to both authors. 

 

The proceedings for the 4/27/2015 interim meeting can be found at: 

 

http://www.ietf.org/proceedings/interim/2015/04/27/idr/proceedings.html

 

 

Sue Hares

 

 


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	{page:WordSection1;}
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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>On =
4/27/2015 the WG held a very short interim (15 minutes) where the =
authors of the following two IDR yang modules announced their intention =
to merge these drafts using the draft-shaikh-idr-bgp-model as the basis =
for the merge,. <o:p></o:p></p><p class=3DMsoNormal><span =
class=3Dapple-converted-space><span =
style=3D'font-size:11.5pt;color:#222222;background:#F9F9F9'><o:p>&nbsp;</=
o:p></span></span></p><p class=3DMsoNormal><span =
class=3Dapple-converted-space><span =
style=3D'font-size:11.5pt;color:#222222;background:#F9F9F9'><a =
href=3D"http://datatracker.ietf.org/doc/draft-shaikh-idr-bgp-model/">http=
://datatracker.ietf.org/doc/draft-shaikh-idr-bgp-model/</a><o:p></o:p></s=
pan></span></p><p class=3DMsoNormal><span =
class=3Dapple-converted-space><span =
style=3D'font-size:11.5pt;color:#222222;background:#F9F9F9'><o:p>&nbsp;</=
o:p></span></span></p><p class=3DMsoNormal><a =
href=3D"http://datatracker.ietf.org/doc/draft-zhdankin-idr-bgp-cfg/">http=
://datatracker.ietf.org/doc/draft-zhdankin-idr-bgp-cfg/</a><o:p></o:p></p=
><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>The =
merged draft will be presented at the next IDR interim on June =
1<sup>st</sup>.&nbsp; Please send your comments on these two drafts to =
both authors. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>The =
proceedings for the 4/27/2015 interim meeting can be found at: =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><a =
href=3D"http://www.ietf.org/proceedings/interim/2015/04/27/idr/proceeding=
s.html">http://www.ietf.org/proceedings/interim/2015/04/27/idr/proceeding=
s.html</a><o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal> <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sue =
Hares<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
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From nobody Tue May  5 21:52:38 2015
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From: Jon Mitchell <jrmitche@puck.nether.net>
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Support publication.

-Jon

> On May 5, 2015, at 6:11 PM, Susan Hares <shares@ndzh.com> wrote:
>=20
> The IDR mail list has received no comments on the the revision of the draf=
t-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for thi=
s draft, this call is extended to 5/18/2015.   Unless this draft receives su=
pport comments, this draft will not be forwarded to the IESG.
> =20
> You can see the final revision at the following:
> =20
> http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt
> =20
> =20
> Sue Hares and John Scudder =20
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div><br></div><div>Support publication.<br=
><br>-Jon</div><div><br>On May 5, 2015, at 6:11 PM, Susan Hares &lt;<a href=3D=
"mailto:shares@ndzh.com">shares@ndzh.com</a>&gt; wrote:<br><br></div><blockq=
uote type=3D"cite"><div><meta http-equiv=3D"Content-Type" content=3D"text/ht=
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</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">The IDR mail list has received no comments on the the revision of t=
he draft-ietf-idr-flowspec-redirect-rt-bis-04.txt.&nbsp; &nbsp;Due to earlie=
r support for this draft, this call is extended to 5/18/2015. &nbsp;&nbsp;Un=
less this draft receives support comments, this draft will not be forwarded t=
o the IESG. <o:p></o:p></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p cl=
ass=3D"MsoNormal">You can see the final revision at the following: <o:p></o:=
p></p><p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p><p class=3D"MsoNormal"> <a=
 href=3D"http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.t=
xt">http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt</a=
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dy></html>=

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From nobody Wed May  6 02:43:37 2015
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From: Shishio Tsuchiya <shtsuchi@cisco.com>
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I support this draft, and  type 0x8008(redirect AS-2byte) and 0x8208(redirect AS-4byte).

But I can't support type 0x8108 (redirect IPv4) to reduce confusion.
I think the type should be included in "BGP Flow-Spec Redirect to IP Action".
https://tools.ietf.org/html/draft-ietf-idr-flowspec-redirect-ip-02


Regards,
-Shishio


(2015/05/06 10:11), Susan Hares wrote:
> The IDR mail list has received no comments on the the revision of the draft-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for this draft, this call is extended to 5/18/2015.   Unless this draft receives support comments, this draft will not be forwarded to the IESG.
> 
> You can see the final revision at the following:
> 
> http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt
> 
> Sue Hares and John Scudder
> 
> 
> 
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
> 



From nobody Wed May  6 07:06:28 2015
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Shishio,

On Wed, May 06, 2015 at 06:43:30PM +0900, Shishio Tsuchiya wrote:
> I support this draft, and  type 0x8008(redirect AS-2byte) and 0x8208(redirect AS-4byte).
> 
> But I can't support type 0x8108 (redirect IPv4) to reduce confusion.
> I think the type should be included in "BGP Flow-Spec Redirect to IP Action".
> https://tools.ietf.org/html/draft-ietf-idr-flowspec-redirect-ip-02

Unlike the redirect-to-ip feature, this is a long deployed feature to
redirect routes to VRFs containing the mentioned route-target.  IPv4 is a
valid global administrator field in route-targets.

If your implementation is unable to support such route-targets, it's fine to
not implement it.  However, this is not redirecting based on IP nexthop or
tunnel.

-- Jeff


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Jeff
(2015/05/06 23:06), Jeffrey Haas wrote:
> Shishio,
> 
> On Wed, May 06, 2015 at 06:43:30PM +0900, Shishio Tsuchiya wrote:
>> I support this draft, and  type 0x8008(redirect AS-2byte) and 0x8208(redirect AS-4byte).
>>
>> But I can't support type 0x8108 (redirect IPv4) to reduce confusion.
>> I think the type should be included in "BGP Flow-Spec Redirect to IP Action".
>> https://tools.ietf.org/html/draft-ietf-idr-flowspec-redirect-ip-02
> 
> Unlike the redirect-to-ip feature, this is a long deployed feature to
> redirect routes to VRFs containing the mentioned route-target.  IPv4 is a
> valid global administrator field in route-targets.

Thanks, I understood.
To support RFC4360 route-targets parameter, this type also is needed in  draft-ietf-idr-flowspec-redirect-rt.


> 
> If your implementation is unable to support such route-targets, it's fine to
> not implement it.  However, this is not redirecting based on IP nexthop or
> tunnel.

My comment is not mention about our implementation.
I just thought if this type 0x8108 is same function as 'Flow-spec Redirect to IPv4' of "BGP Flow-Spec Redirect to IP Action" then it would be complex for operators.

But it was my misunderstanding.


Support publication.

Regards,
-Shishio


> 
> -- Jeff
> .
> 



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Subject: [Idr] RtgDir review: draft-ietf-idr-add-path-10.txt
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Hello,=20

I have been selected as the Routing Directorate reviewer for this draft. Th=
e Routing Directorate seeks to review all routing or routing-related drafts=
 as they pass through IETF last call and IESG review, and sometimes on spec=
ial request. The purpose of the review is to provide assistance to the Rout=
ing ADs. For more information about the Routing Directorate, please see htt=
p://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir=20

Although these comments are primarily for the use of the Routing ADs, it wo=
uld be helpful if you could consider them along with any other IETF Last Ca=
ll comments that you receive, and strive to resolve them through discussion=
 or by updating the draft.

Document: draft-ietf-idr-add-path-10.txt=20
Reviewer: Mach Chen=20
Review Date: 2015/05/07=20
IETF LC End Date: Not known
Intended Status: Standards Track

Summary:
 This document is basically ready for publication, but has nits that should=
 be considered prior to publication.

Comments:=20
 The document is well written and easy to read.
=20
Major Issues:=20
 No major issues found.

Minor Issues:=20
 No minor issues found.

Nits:

Abstract and Introduction

s/In this document we propose/This document defines


Introduction

s/"Send-update Process"/Send-update Process, to align with the usage as in =
RFC4271.

Section 4

"Send/Receive:

         This field indicates whether the sender is (a) able to receive
         multiple paths from its peer (value 1), (b) able to send
         multiple paths to its peer (value 2), or (c) both (value 3) for
         the <AFI, SAFI>."

How about other values and what's the process when received value other tha=
n 1, 2 and 3?


Section 5

OLD:
" A BGP speaker MUST follow the existing procedures in generating an
   UPDATE message for a particular <AFI, SAFI> to a peer unless the BGP..."

NEW:
"A BGP speaker MUST follow the procedures defined in [RFC4271] in generatin=
g an
   UPDATE message for a particular <AFI, SAFI> to a peer unless the BGP..."
"

Best regards,
Mach


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From: Mach Chen <mach.chen@huawei.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015
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Support publication.

Best regards,
Mach

From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Susan Hares
Sent: Wednesday, May 06, 2015 9:11 AM
To: idr@ietf.org
Cc: 'Jeff Haas'
Subject: Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redir=
ect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015

The IDR mail list has received no comments on the the revision of the draft=
-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for thi=
s draft, this call is extended to 5/18/2015.   Unless this draft receives s=
upport comments, this draft will not be forwarded to the IESG.

You can see the final revision at the following:

http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt


Sue Hares and John Scudder

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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Best regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Mach<o:p></o:p></span></p>
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<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> Idr [mailto:idr-bounces@ietf.org]
<b>On Behalf Of </b>Susan Hares<br>
<b>Sent:</b> Wednesday, May 06, 2015 9:11 AM<br>
<b>To:</b> idr@ietf.org<br>
<b>Cc:</b> 'Jeff Haas'<br>
<b>Subject:</b> Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspe=
c-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015<o:p></o=
:p></span></p>
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<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The IDR mail list has received =
no comments on the the revision of the draft-ietf-idr-flowspec-redirect-rt-=
bis-04.txt.&nbsp; &nbsp;Due to earlier support for this draft, this call is=
 extended to 5/18/2015. &nbsp;&nbsp;Unless this draft receives
 support comments, this draft will not be forwarded to the IESG. <o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">You can see the final revision =
at the following:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
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<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Sue Hares and John Scudder &nbs=
p;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

--_000_F73A3CB31E8BE34FA1BBE3C8F0CB2AE28B42746ASZXEMA510MBXchi_--


From nobody Thu May  7 02:27:17 2015
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Inter-Domain Routing Working Group of the IETF.

        Title           : Distribution of MPLS Traffic Engineering (TE) LSP State using BGP
        Authors         : Jie Dong
                          Mach(Guoyi) Chen
                          Hannes Gredler
                          Stefano Previdi
                          Jeff Tantsura
	Filename        : draft-ietf-idr-te-lsp-distribution-03.txt
	Pages           : 12
	Date            : 2015-05-07

Abstract:
   This document describes a mechanism to collect the Traffic
   Engineering (TE) LSP information using BGP.  Such information can be
   used by external components for path reoptimization, service
   placement and network visualization.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-te-lsp-distribution/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-idr-te-lsp-distribution-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-te-lsp-distribution-03


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Date: Thu, 07 May 2015 10:03:04 -0400
From: Lou Berger <lberger@labn.net>
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Hi,
    I have a couple of questions on this draft:

>
>    The 64-Bit 'Identifier' field is used to discriminate between
>    instances with different LSP technologies.  The default identifier
>    "0" identifies the instance for packet switched LSPs.

> A new
>    identifier TBD is used to identify the instance of optical layer
>    LSPs.

Doesn't it make more sense to just carry the values used in LSP
switching type (See rfc3473/7074) for the non-zero  case?  

>   Currently the TE LSP Objects that can be carried in the LSP State TLV
>   include:

How do you distinguish between RSVP and PCEP objects?

Lou

On 5/7/2015 5:27 AM, internet-drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>  This draft is a work item of the Inter-Domain Routing Working Group of the IETF.
>
>         Title           : Distribution of MPLS Traffic Engineering (TE) LSP State using BGP
>         Authors         : Jie Dong
>                           Mach(Guoyi) Chen
>                           Hannes Gredler
>                           Stefano Previdi
>                           Jeff Tantsura
> 	Filename        : draft-ietf-idr-te-lsp-distribution-03.txt
> 	Pages           : 12
> 	Date            : 2015-05-07
>
> Abstract:
>    This document describes a mechanism to collect the Traffic
>    Engineering (TE) LSP information using BGP.  Such information can be
>    used by external components for path reoptimization, service
>    placement and network visualization.
>
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-idr-te-lsp-distribution/
>
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-idr-te-lsp-distribution-03
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-te-lsp-distribution-03
>
>
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>



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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Lou Berger <lberger@labn.net>, "draft-ietf-idr-te-lsp-distribution@ietf.org" <draft-ietf-idr-te-lsp-distribution@ietf.org>
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Hi Lou,=20

Thanks a lot for your comments, and please see my replies inline:

> -----Original Message-----
> From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Lou Berger
> Sent: Thursday, May 07, 2015 10:03 PM
> To: draft-ietf-idr-te-lsp-distribution@ietf.org
> Cc: idr@ietf.org
> Subject: Re: [Idr] I-D Action: draft-ietf-idr-te-lsp-distribution-03.txt
>=20
> Hi,
>     I have a couple of questions on this draft:
>=20
> >
> >    The 64-Bit 'Identifier' field is used to discriminate between
> >    instances with different LSP technologies.  The default identifier
> >    "0" identifies the instance for packet switched LSPs.
>=20
> > A new
> >    identifier TBD is used to identify the instance of optical layer
> >    LSPs.
>=20
> Doesn't it make more sense to just carry the values used in LSP switching=
 type
> (See rfc3473/7074) for the non-zero  case?

I agree with your point that this document could cover LSPs with different =
switching types. As for using the switching type values directly as identif=
ier, we coauthors will discuss it and then feedback to you.

> >   Currently the TE LSP Objects that can be carried in the LSP State TLV
> >   include:
>=20
> How do you distinguish between RSVP and PCEP objects?

Good question. My understanding is for the same information, the format of =
RSVP and PCEP objects usually are compatible. In case there is some discrep=
ancy, the current strategy is, for information which has corresponding RSVP=
 object, the RSVP object is used, otherwise the PCEP object is used. Or do =
you have some suggestions about this?

Best regards,
Jie

> Lou
>=20
> On 5/7/2015 5:27 AM, internet-drafts@ietf.org wrote:
> > A New Internet-Draft is available from the on-line Internet-Drafts dire=
ctories.
> >  This draft is a work item of the Inter-Domain Routing Working Group of=
 the
> IETF.
> >
> >         Title           : Distribution of MPLS Traffic Engineering (TE)=
 LSP
> State using BGP
> >         Authors         : Jie Dong
> >                           Mach(Guoyi) Chen
> >                           Hannes Gredler
> >                           Stefano Previdi
> >                           Jeff Tantsura
> > 	Filename        : draft-ietf-idr-te-lsp-distribution-03.txt
> > 	Pages           : 12
> > 	Date            : 2015-05-07
> >
> > Abstract:
> >    This document describes a mechanism to collect the Traffic
> >    Engineering (TE) LSP information using BGP.  Such information can be
> >    used by external components for path reoptimization, service
> >    placement and network visualization.
> >
> >
> >
> > The IETF datatracker status page for this draft is:
> > https://datatracker.ietf.org/doc/draft-ietf-idr-te-lsp-distribution/
> >
> > There's also a htmlized version available at:
> > https://tools.ietf.org/html/draft-ietf-idr-te-lsp-distribution-03
> >
> > A diff from the previous version is available at:
> > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-idr-te-lsp-distribution-=
0
> > 3
> >
> >
> > Please note that it may take a couple of minutes from the time of
> > submission until the htmlized version and diff are available at tools.i=
etf.org.
> >
> > Internet-Drafts are also available by anonymous FTP at:
> > ftp://ftp.ietf.org/internet-drafts/
> >
> > _______________________________________________
> > I-D-Announce mailing list
> > I-D-Announce@ietf.org
> > https://www.ietf.org/mailman/listinfo/i-d-announce
> > Internet-Draft directories: http://www.ietf.org/shadow.html or
> > ftp://ftp.ietf.org/ietf/1shadow-sites.txt
> >
>=20
>=20
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr


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From: Lou Berger <lberger@labn.net>
To: "Dongjie (Jimmy)" <jie.dong@huawei.com>, <draft-ietf-idr-te-lsp-distribution@ietf.org>
Date: Fri, 08 May 2015 07:40:05 -0400
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-te-lsp-distribution-03.txt
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Jie,

See in line below.


On May 8, 2015 6:04:33 AM "Dongjie (Jimmy)" <jie.dong@huawei.com> wrote:

> Hi Lou,
>
> Thanks a lot for your comments, and please see my replies inline:
>
> > -----Original Message-----
> > From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Lou Berger
> > Sent: Thursday, May 07, 2015 10:03 PM
> > To: draft-ietf-idr-te-lsp-distribution@ietf.org
> > Cc: idr@ietf.org
> > Subject: Re: [Idr] I-D Action: draft-ietf-idr-te-lsp-distribution-03.txt
> >
> > Hi,
> >     I have a couple of questions on this draft:
> >
> > >
> > >    The 64-Bit 'Identifier' field is used to discriminate between
> > >    instances with different LSP technologies.  The default identifier
> > >    "0" identifies the instance for packet switched LSPs.
> >
> > > A new
> > >    identifier TBD is used to identify the instance of optical layer
> > >    LSPs.
> >
> > Doesn't it make more sense to just carry the values used in LSP switching 
> type
> > (See rfc3473/7074) for the non-zero  case?
>
> I agree with your point that this document could cover LSPs with different 
> switching types. As for using the switching type values directly as 
> identifier, we coauthors will discuss it and then feedback to you.
>

Sure, but unless there's a substantive justification, I really don't think 
we need another name/number space for the same thing.

> > >   Currently the TE LSP Objects that can be carried in the LSP State TLV
> > >   include:
> >
> > How do you distinguish between RSVP and PCEP objects?
>
> Good question. My understanding is for the same information, the format of 
> RSVP and PCEP objects usually are compatible. In case there is some 
> discrepancy, the current strategy is, for information which has 
> corresponding RSVP object, the RSVP object is used, otherwise the PCEP 
> object is used. Or do you have some suggestions about this?
>

There is collision/ambiguity so I'd use a different type or add a subtype.

Lou

> Best regards,
> Jie
>
> > Lou
> >
> > On 5/7/2015 5:27 AM, internet-drafts@ietf.org wrote:
> > > A New Internet-Draft is available from the on-line Internet-Drafts 
> directories.
> > >  This draft is a work item of the Inter-Domain Routing Working Group of the
> > IETF.
> > >
> > >         Title           : Distribution of MPLS Traffic Engineering (TE) LSP
> > State using BGP
> > >         Authors         : Jie Dong
> > >                           Mach(Guoyi) Chen
> > >                           Hannes Gredler
> > >                           Stefano Previdi
> > >                           Jeff Tantsura
> > > 	Filename        : draft-ietf-idr-te-lsp-distribution-03.txt
> > > 	Pages           : 12
> > > 	Date            : 2015-05-07
> > >
> > > Abstract:
> > >    This document describes a mechanism to collect the Traffic
> > >    Engineering (TE) LSP information using BGP.  Such information can be
> > >    used by external components for path reoptimization, service
> > >    placement and network visualization.
> > >
> > >
> > >
> > > The IETF datatracker status page for this draft is:
> > > https://datatracker.ietf.org/doc/draft-ietf-idr-te-lsp-distribution/
> > >
> > > There's also a htmlized version available at:
> > > https://tools.ietf.org/html/draft-ietf-idr-te-lsp-distribution-03
> > >
> > > A diff from the previous version is available at:
> > > https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-te-lsp-distribution-0
> > > 3
> > >
> > >
> > > Please note that it may take a couple of minutes from the time of
> > > submission until the htmlized version and diff are available at 
> tools.ietf.org.
> > >
> > > Internet-Drafts are also available by anonymous FTP at:
> > > ftp://ftp.ietf.org/internet-drafts/
> > >
> > > _______________________________________________
> > > I-D-Announce mailing list
> > > I-D-Announce@ietf.org
> > > https://www.ietf.org/mailman/listinfo/i-d-announce
> > > Internet-Draft directories: http://www.ietf.org/shadow.html or
> > > ftp://ftp.ietf.org/ietf/1shadow-sites.txt
> > >
> >
> >
> > _______________________________________________
> > Idr mailing list
> > Idr@ietf.org
> > https://www.ietf.org/mailman/listinfo/idr
>



From nobody Fri May  8 20:27:15 2015
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Subject: [Idr] I-D Action: draft-ietf-idr-flowspec-l2vpn-01.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Inter-Domain Routing Working Group of the IETF.

        Title           : Dissemination of Flow Specification Rules for L2 VPN
        Authors         : Weiguo Hao
                          Qiandeng Liang
                          Stephane Litkowski
                          Shunwan Zhuang
	Filename        : draft-ietf-idr-flowspec-l2vpn-01.txt
	Pages           : 11
	Date            : 2015-05-08

Abstract:
   This document defines BGP flow-spec extension for Ethernet traffic
   filtering in L2 VPN network. SAFI=134 in [RFC5575] is redefined for
   dissemination traffic filtering information in an L2VPN environment.
   A new subset of component types and extended community also are
   defined.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-flowspec-l2vpn/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-idr-flowspec-l2vpn-01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-flowspec-l2vpn-01


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Hi Folks,
A new version of  "dissemination of Flow Specification Rules for L2 VPN" wa=
s posted. Compared with ver-00, the main change points are in section 4. Ne=
w VLAN-action and TPID-action definition are added.

Your further comments and suggestions are appreciated.

Thanks,
weiguo

________________________________________
From: internet-drafts@ietf.org [internet-drafts@ietf.org]
Sent: Saturday, May 09, 2015 11:27
To: Liangqiandeng; Zhuangshunwan; Haoweiguo; Stephane Litkowski; Zhuangshun=
wan; Liangqiandeng; Stephane Litkowski; Haoweiguo
Subject: New Version Notification for draft-ietf-idr-flowspec-l2vpn-01.txt

A new version of I-D, draft-ietf-idr-flowspec-l2vpn-01.txt
has been successfully submitted by Weiguo Hao and posted to the
IETF repository.

Name:           draft-ietf-idr-flowspec-l2vpn
Revision:       01
Title:          Dissemination of Flow Specification Rules for L2 VPN
Document date:  2015-05-09
Group:          idr
Pages:          11
URL:            https://www.ietf.org/internet-drafts/draft-ietf-idr-flowspe=
c-l2vpn-01.txt
Status:         https://datatracker.ietf.org/doc/draft-ietf-idr-flowspec-l2=
vpn/
Htmlized:       https://tools.ietf.org/html/draft-ietf-idr-flowspec-l2vpn-0=
1
Diff:           https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-idr-flowspec=
-l2vpn-01

Abstract:
   This document defines BGP flow-spec extension for Ethernet traffic
   filtering in L2 VPN network. SAFI=3D134 in [RFC5575] is redefined for
   dissemination traffic filtering information in an L2VPN environment.
   A new subset of component types and extended community also are
   defined.




Please note that it may take a couple of minutes from the time of submissio=
n
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat=


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Hi Lou,=20

Thanks for your replies, and please see inline below:

> -----Original Message-----
> From: Lou Berger [mailto:lberger@labn.net]
> Sent: Friday, May 08, 2015 7:40 PM
> To: Dongjie (Jimmy); draft-ietf-idr-te-lsp-distribution@ietf.org
> Cc: idr@ietf.org
> Subject: RE: [Idr] I-D Action: draft-ietf-idr-te-lsp-distribution-03.txt
>=20
> Jie,
>=20
> See in line below.
>=20
>=20
> On May 8, 2015 6:04:33 AM "Dongjie (Jimmy)" <jie.dong@huawei.com> wrote:
>=20
> > Hi Lou,
> >
> > Thanks a lot for your comments, and please see my replies inline:
> >
> > > -----Original Message-----
> > > From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Lou Berger
> > > Sent: Thursday, May 07, 2015 10:03 PM
> > > To: draft-ietf-idr-te-lsp-distribution@ietf.org
> > > Cc: idr@ietf.org
> > > Subject: Re: [Idr] I-D Action:
> > > draft-ietf-idr-te-lsp-distribution-03.txt
> > >
> > > Hi,
> > >     I have a couple of questions on this draft:
> > >
> > > >
> > > >    The 64-Bit 'Identifier' field is used to discriminate between
> > > >    instances with different LSP technologies.  The default identifi=
er
> > > >    "0" identifies the instance for packet switched LSPs.
> > >
> > > > A new
> > > >    identifier TBD is used to identify the instance of optical layer
> > > >    LSPs.
> > >
> > > Doesn't it make more sense to just carry the values used in LSP
> > > switching
> > type
> > > (See rfc3473/7074) for the non-zero  case?
> >
> > I agree with your point that this document could cover LSPs with
> > different switching types. As for using the switching type values
> > directly as identifier, we coauthors will discuss it and then feedback =
to you.
> >
>=20
> Sure, but unless there's a substantive justification, I really don't thin=
k we need
> another name/number space for the same thing.

What about we use another way to specify the LSP switching type: include th=
e Generalized Label Request Object in the LSP State Information TLVs, as th=
e switching type is one of the attributes of the LSP. The NLRI is used to s=
pecify the identifiers of the LSP.

This would not require the assignment of several well-known values from the=
 identifier registry. Our concern is that this identifier field and registr=
y is generic for all BGP-LS NLRIs, and making reservations for some specifi=
c NLRIs may restrict the usage of such values.=20

If you agree with this method, we can add the corresponding specifications =
in next revision.

>=20
> > > >   Currently the TE LSP Objects that can be carried in the LSP State=
 TLV
> > > >   include:
> > >
> > > How do you distinguish between RSVP and PCEP objects?
> >
> > Good question. My understanding is for the same information, the
> > format of RSVP and PCEP objects usually are compatible. In case there
> > is some discrepancy, the current strategy is, for information which
> > has corresponding RSVP object, the RSVP object is used, otherwise the
> > PCEP object is used. Or do you have some suggestions about this?
> >
>=20
> There is collision/ambiguity so I'd use a different type or add a subtype=
.

Our intention was to re-use the existing registries of LSP objects and avoi=
d defining a new one. The advantage is every time some new object is define=
d in RSVP or PCEP, this BGP-LS specification does not need to be revised.

That said, I'd agree that the ambiguity between RSVP and PCEP objects needs=
 to be solved. One possible solution for this is to make the LSP State info=
rmation TLVs hierarchical. We can define a set of top level TLVs, each one =
identifies the source/format of the information carried. For example, we ca=
n define a top-level sub-TLV for RSVP, which consists of the existing RSVP =
objects. Similarly, define another top level sub-TLV for PCEP, which carrie=
s the existing PCEP objects. We may also define a new top level sub-TLV for=
 LSP information derived from other sources. This way we can solve the ambi=
guity without assigning new type values for every existing object. Hope thi=
s is in line with your proposal "add a subtype".

Best regards,
Jie

>=20
> Lou
>=20
> > Best regards,
> > Jie
> >
> > > Lou
> > >
> > > On 5/7/2015 5:27 AM, internet-drafts@ietf.org wrote:
> > > > A New Internet-Draft is available from the on-line Internet-Drafts
> > directories.
> > > >  This draft is a work item of the Inter-Domain Routing Working
> > > > Group of the
> > > IETF.
> > > >
> > > >         Title           : Distribution of MPLS Traffic Engineering =
(TE)
> LSP
> > > State using BGP
> > > >         Authors         : Jie Dong
> > > >                           Mach(Guoyi) Chen
> > > >                           Hannes Gredler
> > > >                           Stefano Previdi
> > > >                           Jeff Tantsura
> > > > 	Filename        : draft-ietf-idr-te-lsp-distribution-03.txt
> > > > 	Pages           : 12
> > > > 	Date            : 2015-05-07
> > > >
> > > > Abstract:
> > > >    This document describes a mechanism to collect the Traffic
> > > >    Engineering (TE) LSP information using BGP.  Such information ca=
n be
> > > >    used by external components for path reoptimization, service
> > > >    placement and network visualization.
> > > >
> > > >
> > > >
> > > > The IETF datatracker status page for this draft is:
> > > > https://datatracker.ietf.org/doc/draft-ietf-idr-te-lsp-distributio
> > > > n/
> > > >
> > > > There's also a htmlized version available at:
> > > > https://tools.ietf.org/html/draft-ietf-idr-te-lsp-distribution-03
> > > >
> > > > A diff from the previous version is available at:
> > > > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-idr-te-lsp-distribut=
i
> > > > on-0
> > > > 3
> > > >
> > > >
> > > > Please note that it may take a couple of minutes from the time of
> > > > submission until the htmlized version and diff are available at
> > tools.ietf.org.
> > > >
> > > > Internet-Drafts are also available by anonymous FTP at:
> > > > ftp://ftp.ietf.org/internet-drafts/
> > > >
> > > > _______________________________________________
> > > > I-D-Announce mailing list
> > > > I-D-Announce@ietf.org
> > > > https://www.ietf.org/mailman/listinfo/i-d-announce
> > > > Internet-Draft directories: http://www.ietf.org/shadow.html or
> > > > ftp://ftp.ietf.org/ietf/1shadow-sites.txt
> > > >
> > >
> > >
> > > _______________________________________________
> > > Idr mailing list
> > > Idr@ietf.org
> > > https://www.ietf.org/mailman/listinfo/idr
> >
>=20


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Subject: [Idr] draft-walton-bgp-hostname-capability-00
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--089e01160412e6bcf2051628d89d
Content-Type: text/plain; charset=UTF-8

https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00

Feedback is welcome. There is a "Sectino" typo in the intro, will clean
that up.

Daniel

--089e01160412e6bcf2051628d89d
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<div dir=3D"ltr"><div><a href=3D"https://tools.ietf.org/html/draft-walton-b=
gp-hostname-capability-00">https://tools.ietf.org/html/draft-walton-bgp-hos=
tname-capability-00</a><br></div><div><br></div><div>Feedback is welcome. T=
here is a &quot;<span style=3D"color:rgb(0,0,0);font-size:13.3333330154419p=
x">Sectino&quot; typo in the intro, will clean that up.=C2=A0</span></div><=
div><br></div><div>Daniel</div><div><br></div></div>

--089e01160412e6bcf2051628d89d--


From nobody Fri May 15 18:52:38 2015
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one more unneeded place for things to go wrong

randy


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Agree.. adding code for no real operational benefit

Sent from my BlackBerry 10 smartphone on the Rogers network.
=A0 Original Message =A0
From: Randy Bush
Sent: Friday, May 15, 2015 10:52 PM
To: Daniel Walton
Cc: idr wg; Dinesh Dutt
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00

one more unneeded place for things to go wrong

randy

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To: Daniel Walton <dwalton@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Minimally this is going to want ext-opt-param. :-)

Jeff

> On May 15, 2015, at 21:26, Daniel Walton <dwalton@cumulusnetworks.com> wro=
te:
>=20
> https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00
>=20
> Feedback is welcome. There is a "Sectino" typo in the intro, will clean th=
at up.=20
>=20
> Daniel
>=20
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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Minimally this is going to want ext-opt-param. :-)<br><br>Jeff</div><div><br>On May 15, 2015, at 21:26, Daniel Walton &lt;<a href="mailto:dwalton@cumulusnetworks.com">dwalton@cumulusnetworks.com</a>&gt; wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div><a href="https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00">https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00</a><br></div><div><br></div><div>Feedback is welcome. There is a "<span style="color:rgb(0,0,0);font-size:13.3333330154419px">Sectino" typo in the intro, will clean that up.&nbsp;</span></div><div><br></div><div>Daniel</div><div><br></div></div>
</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Idr mailing list</span><br><span><a href="mailto:Idr@ietf.org">Idr@ietf.org</a></span><br><span><a href="https://www.ietf.org/mailman/listinfo/idr">https://www.ietf.org/mailman/listinfo/idr</a></span><br></div></blockquote></body></html>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> Minimally this is going to want ext-opt-param. :-)
>> https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00

also the astologic sign of the last person to config the peer.  in
radians.


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From: Daniel Walton <dwalton@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Many of our customers use a Clos architecture and bgp peer to the IPv6 LL
address of every directly connected router.  To avoid configuring neighbor
statements with LL addresses we support a "neighbor swpX interface" command
("swpX" is the default notation for an interface name in cumulus linux).
We then peer to the LL address on the other end of the swpX link (we only
support this for point-to-point links).

When you run commands like "show ip bgp summary" you see a list of
interface names instead of IP addresses. Typically if you are loopback
peering you either become familiar with "10.0.0.1 is Chicago" because you
see 10.0.0.1 in the 'show ip bgp summ' output of several different routers
or you could use DNS to do a lookup on 10.0.0.1 and put the hostname in the
output.  When every box is peering to LL addresses though ("swpX" for short
for us) you can't easily tell who that peer is and you can't use DNS
because they LL addresses

*Before*

leaf-11# show ip bgp summ
BGP router identifier 6.0.0.5, local AS number 65101
BGP table version 25
RIB entries 33, using 3960 bytes of memory
Peers 6, using 100 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
 State/PfxRcd
swp1            4 65000     196     198        0    0    0 00:02:51        9
swp2            4 65000     195     200        0    0    0 00:02:51        9
swp3            4 65000     197     200        0    0    0 00:02:51        9
swp4            4 65000     198     200        0    0    0 00:02:51        9
swp5            4 65201     207     200        0    0    0 00:02:51        2
swp6            4 65202     210     201        0    0    0 00:02:52        2

Total number of neighbors 6
leaf-11#

spine-3# show ip bgp summ
BGP router identifier 6.0.0.15, local AS number 65000
BGP table version 19
RIB entries 33, using 3960 bytes of memory
Peers 8, using 134 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
 State/PfxRcd
swp5            4 65101     675     675        0    0    0 00:10:49        5
swp6            4 65101     678     676        0    0    0 00:10:50        5
swp7            4 65101     667     668        0    0    0 00:10:48        5
swp8            4 65101     676     676        0    0    0 00:10:49        5
swp9            4 65102     701     692        0    0    0 00:11:04        5
swp10           4 65102     701     692        0    0    0 00:11:04        5
swp11           4 65102     701     691        0    0    0 00:11:04        5
swp12           4 65102     701     692        0    0    0 00:11:04        5

Total number of neighbors 8
spine-3#
spine-3#


*After*

leaf-11# show ip bgp summ
BGP router identifier 6.0.0.5, local AS number 65101
BGP table version 25
RIB entries 33, using 3960 bytes of memory
Peers 6, using 100 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
 State/PfxRcd
spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07        9
spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07        9
spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07        9
spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07        9
tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07        2
tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08        2

Total number of neighbors 6
leaf-11#

spine-3# show ip bgp summ
BGP router identifier 6.0.0.15, local AS number 65000
BGP table version 19
RIB entries 33, using 3960 bytes of memory
Peers 8, using 134 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
 State/PfxRcd
leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13        5
leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14        5
leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12        5
leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13        5
leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28        5
leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28        5
leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28        5
leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28        5

Total number of neighbors 8
spine-3#

It makes troubleshooting much easier.

Daniel


On Fri, May 15, 2015 at 9:58 PM, <deleskie@gmail.com> wrote:

> Agree.. adding code for no real operational benefit
>
> Sent from my BlackBerry 10 smartphone on the Rogers network.
>   Original Message
> From: Randy Bush
> Sent: Friday, May 15, 2015 10:52 PM
> To: Daniel Walton
> Cc: idr wg; Dinesh Dutt
> Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
>
> one more unneeded place for things to go wrong
>
> randy
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
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--20cf303347bb5dd31905162b1d9f
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Many of our customers use a Clos architecture and bgp=
 peer to the IPv6 LL address of every directly connected router.=C2=A0 To a=
void configuring neighbor statements with LL addresses we support a &quot;n=
eighbor swpX interface&quot; command (&quot;swpX&quot; is the default notat=
ion for an interface name in cumulus linux).=C2=A0 We then peer to the LL a=
ddress on the other end of the swpX link (we only support this for point-to=
-point links). =C2=A0</div><div><br></div><div>When you run commands like &=
quot;show ip bgp summary&quot; you see a list of interface names instead of=
 IP addresses. Typically if you are loopback peering you either become fami=
liar with &quot;10.0.0.1 is Chicago&quot; because you see 10.0.0.1 in the &=
#39;show ip bgp summ&#39; output of several different routers or you could =
use DNS to do a lookup on 10.0.0.1 and put the hostname in the output.=C2=
=A0 When every box is peering to LL addresses though (&quot;swpX&quot; for =
short for us) you can&#39;t easily tell who that peer is and you can&#39;t =
use DNS because they LL addresses</div><div><br></div><div><b>Before</b><br=
></div><div><br></div><div><div><font face=3D"monospace, monospace">leaf-11=
# show ip bgp summ</font></div><div><font face=3D"monospace, monospace">BGP=
 router identifier 6.0.0.5, local AS number 65101</font></div><div><font fa=
ce=3D"monospace, monospace">BGP table version 25</font></div><div><font fac=
e=3D"monospace, monospace">RIB entries 33, using 3960 bytes of memory</font=
></div><div><font face=3D"monospace, monospace">Peers 6, using 100 KiB of m=
emory</font></div><div><font face=3D"monospace, monospace">Peer groups 1, u=
sing 56 bytes of memory</font></div><div><font face=3D"monospace, monospace=
"><br></font></div><div><font face=3D"monospace, monospace">Neighbor =C2=A0=
 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0=
InQ OutQ Up/Down =C2=A0State/PfxRcd</font></div><div><font face=3D"monospac=
e, monospace">swp1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =
=C2=A0 196 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font=
 face=3D"monospace, monospace">swp2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A04 65000 =C2=A0 =C2=A0 195 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font>=
</div><div><font face=3D"monospace, monospace">swp3 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 197 =C2=A0 =C2=A0 200 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=
=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">swp4 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 198 =C2=A0 =C2=
=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51=
 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, mon=
ospace">swp5 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0=
 207 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=
=3D"monospace, monospace">swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 6=
5202 =C2=A0 =C2=A0 210 =C2=A0 =C2=A0 201 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 00:02:52 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></di=
v><div><font face=3D"monospace, monospace"><br></font></div><div><font face=
=3D"monospace, monospace">Total number of neighbors 6</font></div><div><fon=
t face=3D"monospace, monospace">leaf-11#</font></div></div><div><font face=
=3D"monospace, monospace"><br></font></div><div><font face=3D"monospace, mo=
nospace"><div>spine-3# show ip bgp summ</div><div>BGP router identifier 6.0=
.0.15, local AS number 65000</div><div>BGP table version 19</div><div>RIB e=
ntries 33, using 3960 bytes of memory</div><div>Peers 8, using 134 KiB of m=
emory</div><div>Peer groups 1, using 56 bytes of memory</div><div><br></div=
><div>Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent=
 =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</div><div>swp5 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 675 =C2=A0 =C2=
=A0 675 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 678 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:50 =C2=A0 =C2=A0 =C2=A0 =C2=
=A05</div><div>swp7 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0=
 =C2=A0 667 =C2=A0 =C2=A0 668 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:10:48 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp8 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 6=
76 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=
=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp9 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A04 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</d=
iv><div>swp10 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =
=C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp11 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 691 =C2=A0 =C2=A0=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0=
 =C2=A05</div><div>swp12 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =
=C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div><br></div><d=
iv>Total number of neighbors 8</div><div>spine-3#</div><div>spine-3#</div><=
div><br></div></font></div><div><br></div><div><b>After</b></div><div><br><=
/div><div><div><font face=3D"monospace, monospace">leaf-11# show ip bgp sum=
m</font></div><div><font face=3D"monospace, monospace">BGP router identifie=
r 6.0.0.5, local AS number 65101</font></div><div><font face=3D"monospace, =
monospace">BGP table version 25</font></div><div><font face=3D"monospace, m=
onospace">RIB entries 33, using 3960 bytes of memory</font></div><div><font=
 face=3D"monospace, monospace">Peers 6, using 100 KiB of memory</font></div=
><div><font face=3D"monospace, monospace">Peer groups 1, using 56 bytes of =
memory</font></div><div><font face=3D"monospace, monospace"><br></font></di=
v><div><font face=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =
=C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Dow=
n =C2=A0State/PfxRcd</font></div><div><font face=3D"monospace, monospace">s=
pine-1(swp1) =C2=A0 4 65000 =C2=A0 =C2=A0 211 =C2=A0 =C2=A0 213 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=
=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">spine-2(sw=
p2) =C2=A0 4 65000 =C2=A0 =C2=A0 210 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
9</font></div><div><font face=3D"monospace, monospace">spine-3(swp3) =C2=A0=
 4 65000 =C2=A0 =C2=A0 212 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font><=
/div><div><font face=3D"monospace, monospace">spine-4(swp4) =C2=A0 4 65000 =
=C2=A0 =C2=A0 213 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div>=
<font face=3D"monospace, monospace">tor-11(swp5) =C2=A0 =C2=A04 65201 =C2=
=A0 =C2=A0 222 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><fo=
nt face=3D"monospace, monospace">tor-12(swp6) =C2=A0 =C2=A04 65202 =C2=A0 =
=C2=A0 225 =C2=A0 =C2=A0 216 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:03:08 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font=
 face=3D"monospace, monospace"><br></font></div><div><font face=3D"monospac=
e, monospace">Total number of neighbors 6</font></div><div><font face=3D"mo=
nospace, monospace">leaf-11#</font></div></div><div><br></div><div><div><fo=
nt face=3D"monospace, monospace">spine-3# show ip bgp summ</font></div><div=
><font face=3D"monospace, monospace">BGP router identifier 6.0.0.15, local =
AS number 65000</font></div><div><font face=3D"monospace, monospace">BGP ta=
ble version 19</font></div><div><font face=3D"monospace, monospace">RIB ent=
ries 33, using 3960 bytes of memory</font></div><div><font face=3D"monospac=
e, monospace">Peers 8, using 134 KiB of memory</font></div><div><font face=
=3D"monospace, monospace">Peer groups 1, using 56 bytes of memory</font></d=
iv><div><font face=3D"monospace, monospace"><br></font></div><div><font fac=
e=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=
=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxR=
cd</font></div><div><font face=3D"monospace, monospace">leaf-11(swp5) =C2=
=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font=
></div><div><font face=3D"monospace, monospace">leaf-12(swp6) =C2=A0 4 6510=
1 =C2=A0 =C2=A01122 =C2=A0 =C2=A01120 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 =C2=A0 =C2=A00 00:18:14 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><d=
iv><font face=3D"monospace, monospace">leaf-13(swp7) =C2=A0 4 65101 =C2=A0 =
=C2=A01110 =C2=A0 =C2=A01111 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:18:12 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font=
 face=3D"monospace, monospace">leaf-14(swp8) =C2=A0 4 65101 =C2=A0 =C2=A011=
19 =C2=A0 =C2=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 00:18:13 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"m=
onospace, monospace">leaf-21(swp9) =C2=A0 4 65102 =C2=A0 =C2=A01144 =C2=A0 =
=C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18=
:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, =
monospace">leaf-22(swp10) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135=
 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0=
 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace"=
>leaf-23(swp11) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01134 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =
=C2=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">leaf-24=
(swp12) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=
=A05</font></div><div><font face=3D"monospace, monospace"><br></font></div>=
<div><font face=3D"monospace, monospace">Total number of neighbors 8</font>=
</div><div><font face=3D"monospace, monospace">spine-3#</font></div></div><=
div><br></div><div>It makes troubleshooting much easier.</div><div><br></di=
v><div>Daniel</div><div><br><div class=3D"gmail_extra"><br><div class=3D"gm=
ail_quote">On Fri, May 15, 2015 at 9:58 PM,  <span dir=3D"ltr">&lt;<a href=
=3D"mailto:deleskie@gmail.com" target=3D"_blank">deleskie@gmail.com</a>&gt;=
</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px=
 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-=
left-style:solid;padding-left:1ex">Agree.. adding code for no real operatio=
nal benefit<br>
<br>
Sent from my BlackBerry 10 smartphone on the Rogers network.<br>
=C2=A0 Original Message =C2=A0<br>
From: Randy Bush<br>
Sent: Friday, May 15, 2015 10:52 PM<br>
To: Daniel Walton<br>
Cc: idr wg; Dinesh Dutt<br>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00<br>
<span class=3D""><br>
one more unneeded place for things to go wrong<br>
<br>
randy<br>
<br>
</span>_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote></div><br></div></div></div>

--20cf303347bb5dd31905162b1d9f--


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--001a113d5b88b999be05162cb226
Content-Type: text/plain; charset=UTF-8

Hi Daniel & Dinesh,

I very much like the intention, but have a concern how it would simplify
troubleshooting in practice ...

Imagine we exchange the names in new capability when session comes up so we
list it in summary output instead of link local address. But when you try
to trace or ping that name (from pc or router) your local or global DNS
will return not the LL address but most likely loopback so the results will
be rather of questionable value.

Would you not see this as a problem ? I hope you did not intended to just
cover the cosmetic nature of few show commands which I must agree with
others is rather a legacy way to operate the network these days anyway ;)).

Cheers,
R.


On Saturday, May 16, 2015, Daniel Walton <dwalton@cumulusnetworks.com>
wrote:

> Many of our customers use a Clos architecture and bgp peer to the IPv6 LL
> address of every directly connected router.  To avoid configuring neighbor
> statements with LL addresses we support a "neighbor swpX interface" command
> ("swpX" is the default notation for an interface name in cumulus linux).
> We then peer to the LL address on the other end of the swpX link (we only
> support this for point-to-point links).
>
> When you run commands like "show ip bgp summary" you see a list of
> interface names instead of IP addresses. Typically if you are loopback
> peering you either become familiar with "10.0.0.1 is Chicago" because you
> see 10.0.0.1 in the 'show ip bgp summ' output of several different routers
> or you could use DNS to do a lookup on 10.0.0.1 and put the hostname in the
> output.  When every box is peering to LL addresses though ("swpX" for short
> for us) you can't easily tell who that peer is and you can't use DNS
> because they LL addresses
>
> *Before*
>
> leaf-11# show ip bgp summ
> BGP router identifier 6.0.0.5, local AS number 65101
> BGP table version 25
> RIB entries 33, using 3960 bytes of memory
> Peers 6, using 100 KiB of memory
> Peer groups 1, using 56 bytes of memory
>
> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>  State/PfxRcd
> swp1            4 65000     196     198        0    0    0 00:02:51
>  9
> swp2            4 65000     195     200        0    0    0 00:02:51
>  9
> swp3            4 65000     197     200        0    0    0 00:02:51
>  9
> swp4            4 65000     198     200        0    0    0 00:02:51
>  9
> swp5            4 65201     207     200        0    0    0 00:02:51
>  2
> swp6            4 65202     210     201        0    0    0 00:02:52
>  2
>
> Total number of neighbors 6
> leaf-11#
>
> spine-3# show ip bgp summ
> BGP router identifier 6.0.0.15, local AS number 65000
> BGP table version 19
> RIB entries 33, using 3960 bytes of memory
> Peers 8, using 134 KiB of memory
> Peer groups 1, using 56 bytes of memory
>
> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>  State/PfxRcd
> swp5            4 65101     675     675        0    0    0 00:10:49
>  5
> swp6            4 65101     678     676        0    0    0 00:10:50
>  5
> swp7            4 65101     667     668        0    0    0 00:10:48
>  5
> swp8            4 65101     676     676        0    0    0 00:10:49
>  5
> swp9            4 65102     701     692        0    0    0 00:11:04
>  5
> swp10           4 65102     701     692        0    0    0 00:11:04
>  5
> swp11           4 65102     701     691        0    0    0 00:11:04
>  5
> swp12           4 65102     701     692        0    0    0 00:11:04
>  5
>
> Total number of neighbors 8
> spine-3#
> spine-3#
>
>
> *After*
>
> leaf-11# show ip bgp summ
> BGP router identifier 6.0.0.5, local AS number 65101
> BGP table version 25
> RIB entries 33, using 3960 bytes of memory
> Peers 6, using 100 KiB of memory
> Peer groups 1, using 56 bytes of memory
>
> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>  State/PfxRcd
> spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07
>  9
> spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07
>  9
> spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07
>  9
> spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07
>  9
> tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07
>  2
> tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08
>  2
>
> Total number of neighbors 6
> leaf-11#
>
> spine-3# show ip bgp summ
> BGP router identifier 6.0.0.15, local AS number 65000
> BGP table version 19
> RIB entries 33, using 3960 bytes of memory
> Peers 8, using 134 KiB of memory
> Peer groups 1, using 56 bytes of memory
>
> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>  State/PfxRcd
> leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13
>  5
> leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14
>  5
> leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12
>  5
> leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13
>  5
> leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28
>  5
> leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28
>  5
> leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28
>  5
> leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28
>  5
>
> Total number of neighbors 8
> spine-3#
>
> It makes troubleshooting much easier.
>
> Daniel
>
>
> On Fri, May 15, 2015 at 9:58 PM, <deleskie@gmail.com
> <javascript:_e(%7B%7D,'cvml','deleskie@gmail.com');>> wrote:
>
>> Agree.. adding code for no real operational benefit
>>
>> Sent from my BlackBerry 10 smartphone on the Rogers network.
>>   Original Message
>> From: Randy Bush
>> Sent: Friday, May 15, 2015 10:52 PM
>> To: Daniel Walton
>> Cc: idr wg; Dinesh Dutt
>> Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
>>
>> one more unneeded place for things to go wrong
>>
>> randy
>>
>> _______________________________________________
>> Idr mailing list
>> Idr@ietf.org <javascript:_e(%7B%7D,'cvml','Idr@ietf.org');>
>> https://www.ietf.org/mailman/listinfo/idr
>>
>
>

--001a113d5b88b999be05162cb226
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hi Daniel &amp; Dinesh,<div><br></div><div>I very much like the intention, =
but have a concern how it would simplify troubleshooting in practice ...</d=
iv><div><br></div><div>Imagine we exchange the names in new capability when=
 session comes up=C2=A0so we list it in summary output instead of link loca=
l address. But when you try to trace or ping that name (from pc or router)=
=C2=A0your local or global DNS will return not the LL address but most like=
ly loopback so the results will be rather of=C2=A0questionable value.</div>=
<div><br></div><div>Would you not see this as a problem ? I hope you did no=
t intended to just cover the cosmetic nature of few show commands which I m=
ust agree with others is rather a=C2=A0legacy way to operate the network th=
ese days anyway ;)).</div><div><br></div><div>Cheers,</div><div>R.</div><di=
v><br></div><div><br>On Saturday, May 16, 2015, Daniel Walton &lt;<a href=
=3D"mailto:dwalton@cumulusnetworks.com">dwalton@cumulusnetworks.com</a>&gt;=
 wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bor=
der-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div>Many of our=
 customers use a Clos architecture and bgp peer to the IPv6 LL address of e=
very directly connected router.=C2=A0 To avoid configuring neighbor stateme=
nts with LL addresses we support a &quot;neighbor swpX interface&quot; comm=
and (&quot;swpX&quot; is the default notation for an interface name in cumu=
lus linux).=C2=A0 We then peer to the LL address on the other end of the sw=
pX link (we only support this for point-to-point links). =C2=A0</div><div><=
br></div><div>When you run commands like &quot;show ip bgp summary&quot; yo=
u see a list of interface names instead of IP addresses. Typically if you a=
re loopback peering you either become familiar with &quot;10.0.0.1 is Chica=
go&quot; because you see 10.0.0.1 in the &#39;show ip bgp summ&#39; output =
of several different routers or you could use DNS to do a lookup on 10.0.0.=
1 and put the hostname in the output.=C2=A0 When every box is peering to LL=
 addresses though (&quot;swpX&quot; for short for us) you can&#39;t easily =
tell who that peer is and you can&#39;t use DNS because they LL addresses</=
div><div><br></div><div><b>Before</b><br></div><div><br></div><div><div><fo=
nt face=3D"monospace, monospace">leaf-11# show ip bgp summ</font></div><div=
><font face=3D"monospace, monospace">BGP router identifier 6.0.0.5, local A=
S number 65101</font></div><div><font face=3D"monospace, monospace">BGP tab=
le version 25</font></div><div><font face=3D"monospace, monospace">RIB entr=
ies 33, using 3960 bytes of memory</font></div><div><font face=3D"monospace=
, monospace">Peers 6, using 100 KiB of memory</font></div><div><font face=
=3D"monospace, monospace">Peer groups 1, using 56 bytes of memory</font></d=
iv><div><font face=3D"monospace, monospace"><br></font></div><div><font fac=
e=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=
=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxR=
cd</font></div><div><font face=3D"monospace, monospace">swp1 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 196 =C2=A0 =C2=A0 198 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=
=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">swp=
2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 195 =C2=A0=
 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:0=
2:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace,=
 monospace">swp3 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =
=C2=A0 197 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font=
 face=3D"monospace, monospace">swp4 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A04 65000 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font>=
</div><div><font face=3D"monospace, monospace">swp5 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 207 =C2=A0 =C2=A0 200 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=
=A0 =C2=A02</font></div><div><font face=3D"monospace, monospace">swp6 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65202 =C2=A0 =C2=A0 210 =C2=A0 =C2=
=A0 201 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:52=
 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"monospace, mon=
ospace"><br></font></div><div><font face=3D"monospace, monospace">Total num=
ber of neighbors 6</font></div><div><font face=3D"monospace, monospace">lea=
f-11#</font></div></div><div><font face=3D"monospace, monospace"><br></font=
></div><div><font face=3D"monospace, monospace"><div>spine-3# show ip bgp s=
umm</div><div>BGP router identifier 6.0.0.15, local AS number 65000</div><d=
iv>BGP table version 19</div><div>RIB entries 33, using 3960 bytes of memor=
y</div><div>Peers 8, using 134 KiB of memory</div><div>Peer groups 1, using=
 56 bytes of memory</div><div><br></div><div>Neighbor =C2=A0 =C2=A0 =C2=A0 =
=C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Dow=
n =C2=A0State/PfxRcd</div><div>swp5 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A04 65101 =C2=A0 =C2=A0 675 =C2=A0 =C2=A0 675 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><=
div>swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 678=
 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 00:10:50 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp7 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 667 =C2=A0 =C2=A0 668 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:48 =C2=A0 =C2=A0 =
=C2=A0 =C2=A05</div><div>swp8 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65=
101 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp=
9 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65102 =C2=A0 =C2=A0 701 =C2=A0=
 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:1=
1:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp10 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
5</div><div>swp11 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 =
701 =C2=A0 =C2=A0 691 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp12 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =
=C2=A0 =C2=A05</div><div><br></div><div>Total number of neighbors 8</div><d=
iv>spine-3#</div><div>spine-3#</div><div><br></div></font></div><div><br></=
div><div><b>After</b></div><div><br></div><div><div><font face=3D"monospace=
, monospace">leaf-11# show ip bgp summ</font></div><div><font face=3D"monos=
pace, monospace">BGP router identifier 6.0.0.5, local AS number 65101</font=
></div><div><font face=3D"monospace, monospace">BGP table version 25</font>=
</div><div><font face=3D"monospace, monospace">RIB entries 33, using 3960 b=
ytes of memory</font></div><div><font face=3D"monospace, monospace">Peers 6=
, using 100 KiB of memory</font></div><div><font face=3D"monospace, monospa=
ce">Peer groups 1, using 56 bytes of memory</font></div><div><font face=3D"=
monospace, monospace"><br></font></div><div><font face=3D"monospace, monosp=
ace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =
=C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</font></div><div><f=
ont face=3D"monospace, monospace">spine-1(swp1) =C2=A0 4 65000 =C2=A0 =C2=
=A0 211 =C2=A0 =C2=A0 213 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font fa=
ce=3D"monospace, monospace">spine-2(swp2) =C2=A0 4 65000 =C2=A0 =C2=A0 210 =
=C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"mono=
space, monospace">spine-3(swp3) =C2=A0 4 65000 =C2=A0 =C2=A0 212 =C2=A0 =C2=
=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07=
 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, mon=
ospace">spine-4(swp4) =C2=A0 4 65000 =C2=A0 =C2=A0 213 =C2=A0 =C2=A0 215 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =
=C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">=
tor-11(swp5) =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 222 =C2=A0 =C2=A0 215 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=
=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"monospace, monospace">tor=
-12(swp6) =C2=A0 =C2=A04 65202 =C2=A0 =C2=A0 225 =C2=A0 =C2=A0 216 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:08 =C2=A0 =C2=A0 =
=C2=A0 =C2=A02</font></div><div><font face=3D"monospace, monospace"><br></f=
ont></div><div><font face=3D"monospace, monospace">Total number of neighbor=
s 6</font></div><div><font face=3D"monospace, monospace">leaf-11#</font></d=
iv></div><div><br></div><div><div><font face=3D"monospace, monospace">spine=
-3# show ip bgp summ</font></div><div><font face=3D"monospace, monospace">B=
GP router identifier 6.0.0.15, local AS number 65000</font></div><div><font=
 face=3D"monospace, monospace">BGP table version 19</font></div><div><font =
face=3D"monospace, monospace">RIB entries 33, using 3960 bytes of memory</f=
ont></div><div><font face=3D"monospace, monospace">Peers 8, using 134 KiB o=
f memory</font></div><div><font face=3D"monospace, monospace">Peer groups 1=
, using 56 bytes of memory</font></div><div><font face=3D"monospace, monosp=
ace"><br></font></div><div><font face=3D"monospace, monospace">Neighbor =C2=
=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=
=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</font></div><div><font face=3D"monos=
pace, monospace">leaf-11(swp5) =C2=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=
=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, mon=
ospace">leaf-12(swp6) =C2=A0 4 65101 =C2=A0 =C2=A01122 =C2=A0 =C2=A01120 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:14 =C2=A0 =
=C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">=
leaf-13(swp7) =C2=A0 4 65101 =C2=A0 =C2=A01110 =C2=A0 =C2=A01111 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:12 =C2=A0 =C2=A0 =C2=
=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">leaf-14(sw=
p8) =C2=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=A01119 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
5</font></div><div><font face=3D"monospace, monospace">leaf-21(swp9) =C2=A0=
 4 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font><=
/div><div><font face=3D"monospace, monospace">leaf-22(swp10) =C2=A04 65102 =
=C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div>=
<font face=3D"monospace, monospace">leaf-23(swp11) =C2=A04 65102 =C2=A0 =C2=
=A01144 =C2=A0 =C2=A01134 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font fa=
ce=3D"monospace, monospace">leaf-24(swp12) =C2=A04 65102 =C2=A0 =C2=A01144 =
=C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"mono=
space, monospace"><br></font></div><div><font face=3D"monospace, monospace"=
>Total number of neighbors 8</font></div><div><font face=3D"monospace, mono=
space">spine-3#</font></div></div><div><br></div><div>It makes troubleshoot=
ing much easier.</div><div><br></div><div>Daniel</div><div><br><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, May 15, 2015 at 9:5=
8 PM,  <span dir=3D"ltr">&lt;<a href=3D"javascript:_e(%7B%7D,&#39;cvml&#39;=
,&#39;deleskie@gmail.com&#39;);" target=3D"_blank">deleskie@gmail.com</a>&g=
t;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0=
px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);borde=
r-left-style:solid;padding-left:1ex">Agree.. adding code for no real operat=
ional benefit<br>
<br>
Sent from my BlackBerry 10 smartphone on the Rogers network.<br>
=C2=A0 Original Message =C2=A0<br>
From: Randy Bush<br>
Sent: Friday, May 15, 2015 10:52 PM<br>
To: Daniel Walton<br>
Cc: idr wg; Dinesh Dutt<br>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00<br>
<span><br>
one more unneeded place for things to go wrong<br>
<br>
randy<br>
<br>
</span>_______________________________________________<br>
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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Fri, 15 May 2015 23:18:10 -0700
Message-ID: <CABg5FUWZKnrQjYbvAR+zV+LcGSfWupFYm+Zqu3rm5SK3cdfkdw@mail.gmail.com>
To: Robert Raszuk <robert@raszuk.net>
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Cc: idr wg <idr@ietf.org>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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--001a113a7c0efcfcb305162ceda5
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Hi Robert,

On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk <robert@raszuk.net> wrote:

> Hi Daniel & Dinesh,
>
> I very much like the intention, but have a concern how it would simplify
> troubleshooting in practice ...
>
> Imagine we exchange the names in new capability when session comes up so
> we list it in summary output instead of link local address. But when you
> try to trace or ping that name (from pc or router) your local or global DNS
> will return not the LL address but most likely loopback so the results will
> be rather of questionable value.
>

I'm confused. Why would we send a hostname in this capability that is
different from the one assigned to loopback ? Within the DC at least,
people don't advertise link addresses at all, only the loopback.  So, the
hostname exchanged in the capability would be the same as the one returned
by traceroute/ping.

Dinesh


>
> Would you not see this as a problem ? I hope you did not intended to just
> cover the cosmetic nature of few show commands which I must agree with
> others is rather a legacy way to operate the network these days anyway ;)).
>
> Cheers,
> R.
>
>
> On Saturday, May 16, 2015, Daniel Walton <dwalton@cumulusnetworks.com>
> wrote:
>
>> Many of our customers use a Clos architecture and bgp peer to the IPv6 LL
>> address of every directly connected router.  To avoid configuring neighbor
>> statements with LL addresses we support a "neighbor swpX interface" command
>> ("swpX" is the default notation for an interface name in cumulus linux).
>> We then peer to the LL address on the other end of the swpX link (we only
>> support this for point-to-point links).
>>
>> When you run commands like "show ip bgp summary" you see a list of
>> interface names instead of IP addresses. Typically if you are loopback
>> peering you either become familiar with "10.0.0.1 is Chicago" because you
>> see 10.0.0.1 in the 'show ip bgp summ' output of several different routers
>> or you could use DNS to do a lookup on 10.0.0.1 and put the hostname in the
>> output.  When every box is peering to LL addresses though ("swpX" for short
>> for us) you can't easily tell who that peer is and you can't use DNS
>> because they LL addresses
>>
>> *Before*
>>
>> leaf-11# show ip bgp summ
>> BGP router identifier 6.0.0.5, local AS number 65101
>> BGP table version 25
>> RIB entries 33, using 3960 bytes of memory
>> Peers 6, using 100 KiB of memory
>> Peer groups 1, using 56 bytes of memory
>>
>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>  State/PfxRcd
>> swp1            4 65000     196     198        0    0    0 00:02:51
>>  9
>> swp2            4 65000     195     200        0    0    0 00:02:51
>>  9
>> swp3            4 65000     197     200        0    0    0 00:02:51
>>  9
>> swp4            4 65000     198     200        0    0    0 00:02:51
>>  9
>> swp5            4 65201     207     200        0    0    0 00:02:51
>>  2
>> swp6            4 65202     210     201        0    0    0 00:02:52
>>  2
>>
>> Total number of neighbors 6
>> leaf-11#
>>
>> spine-3# show ip bgp summ
>> BGP router identifier 6.0.0.15, local AS number 65000
>> BGP table version 19
>> RIB entries 33, using 3960 bytes of memory
>> Peers 8, using 134 KiB of memory
>> Peer groups 1, using 56 bytes of memory
>>
>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>  State/PfxRcd
>> swp5            4 65101     675     675        0    0    0 00:10:49
>>  5
>> swp6            4 65101     678     676        0    0    0 00:10:50
>>  5
>> swp7            4 65101     667     668        0    0    0 00:10:48
>>  5
>> swp8            4 65101     676     676        0    0    0 00:10:49
>>  5
>> swp9            4 65102     701     692        0    0    0 00:11:04
>>  5
>> swp10           4 65102     701     692        0    0    0 00:11:04
>>  5
>> swp11           4 65102     701     691        0    0    0 00:11:04
>>  5
>> swp12           4 65102     701     692        0    0    0 00:11:04
>>  5
>>
>> Total number of neighbors 8
>> spine-3#
>> spine-3#
>>
>>
>> *After*
>>
>> leaf-11# show ip bgp summ
>> BGP router identifier 6.0.0.5, local AS number 65101
>> BGP table version 25
>> RIB entries 33, using 3960 bytes of memory
>> Peers 6, using 100 KiB of memory
>> Peer groups 1, using 56 bytes of memory
>>
>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>  State/PfxRcd
>> spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07
>>  9
>> spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07
>>  9
>> spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07
>>  9
>> spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07
>>  9
>> tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07
>>  2
>> tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08
>>  2
>>
>> Total number of neighbors 6
>> leaf-11#
>>
>> spine-3# show ip bgp summ
>> BGP router identifier 6.0.0.15, local AS number 65000
>> BGP table version 19
>> RIB entries 33, using 3960 bytes of memory
>> Peers 8, using 134 KiB of memory
>> Peer groups 1, using 56 bytes of memory
>>
>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>  State/PfxRcd
>> leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13
>>  5
>> leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14
>>  5
>> leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12
>>  5
>> leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13
>>  5
>> leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28
>>  5
>> leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28
>>  5
>> leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28
>>  5
>> leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28
>>  5
>>
>> Total number of neighbors 8
>> spine-3#
>>
>> It makes troubleshooting much easier.
>>
>> Daniel
>>
>>
>> On Fri, May 15, 2015 at 9:58 PM, <deleskie@gmail.com> wrote:
>>
>>> Agree.. adding code for no real operational benefit
>>>
>>> Sent from my BlackBerry 10 smartphone on the Rogers network.
>>>   Original Message
>>> From: Randy Bush
>>> Sent: Friday, May 15, 2015 10:52 PM
>>> To: Daniel Walton
>>> Cc: idr wg; Dinesh Dutt
>>> Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
>>>
>>> one more unneeded place for things to go wrong
>>>
>>> randy
>>>
>>> _______________________________________________
>>> Idr mailing list
>>> Idr@ietf.org
>>> https://www.ietf.org/mailman/listinfo/idr
>>>
>>
>>

--001a113a7c0efcfcb305162ceda5
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Robert,<br><div class=3D"gmail_extra"><br><div class=3D=
"gmail_quote">On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk <span dir=3D"=
ltr">&lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank">robert@rasz=
uk.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"=
margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-lef=
t:1ex">Hi Daniel &amp; Dinesh,<div><br></div><div>I very much like the inte=
ntion, but have a concern how it would simplify troubleshooting in practice=
 ...</div><div><br></div><div>Imagine we exchange the names in new capabili=
ty when session comes up=C2=A0so we list it in summary output instead of li=
nk local address. But when you try to trace or ping that name (from pc or r=
outer)=C2=A0your local or global DNS will return not the LL address but mos=
t likely loopback so the results will be rather of=C2=A0questionable value.=
</div></blockquote><div><br>I&#39;m confused. Why would we send a hostname =
in this capability that is=20
different from the one assigned to loopback ? Within the DC at least,=20
people don&#39;t advertise link addresses at all, only the loopback.=C2=A0 =
So,=20
the hostname exchanged in the capability would be the same as the one=20
returned by traceroute/ping.<div class=3D""><div id=3D":bn4" class=3D"" tab=
index=3D"0"><img class=3D"" src=3D"https://ssl.gstatic.com/ui/v1/icons/mail=
/images/cleardot.gif"><br></div><div id=3D":bn4" class=3D"" tabindex=3D"0">=
Dinesh<br></div></div>=C2=A0</div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div><br></div><div>Would you not see this as a problem ? I hope=
 you did not intended to just cover the cosmetic nature of few show command=
s which I must agree with others is rather a=C2=A0legacy way to operate the=
 network these days anyway ;)).</div><div><br></div><div>Cheers,</div><div>=
R.</div><div class=3D""><div class=3D"h5"><div><br></div><div><br>On Saturd=
ay, May 16, 2015, Daniel Walton &lt;<a href=3D"mailto:dwalton@cumulusnetwor=
ks.com" target=3D"_blank">dwalton@cumulusnetworks.com</a>&gt; wrote:<br><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-lef=
t:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div>Many o=
f our customers use a Clos architecture and bgp peer to the IPv6 LL address=
 of every directly connected router.=C2=A0 To avoid configuring neighbor st=
atements with LL addresses we support a &quot;neighbor swpX interface&quot;=
 command (&quot;swpX&quot; is the default notation for an interface name in=
 cumulus linux).=C2=A0 We then peer to the LL address on the other end of t=
he swpX link (we only support this for point-to-point links). =C2=A0</div><=
div><br></div><div>When you run commands like &quot;show ip bgp summary&quo=
t; you see a list of interface names instead of IP addresses. Typically if =
you are loopback peering you either become familiar with &quot;10.0.0.1 is =
Chicago&quot; because you see 10.0.0.1 in the &#39;show ip bgp summ&#39; ou=
tput of several different routers or you could use DNS to do a lookup on 10=
.0.0.1 and put the hostname in the output.=C2=A0 When every box is peering =
to LL addresses though (&quot;swpX&quot; for short for us) you can&#39;t ea=
sily tell who that peer is and you can&#39;t use DNS because they LL addres=
ses</div><div><br></div><div><b>Before</b><br></div><div><br></div><div><di=
v><font face=3D"monospace, monospace">leaf-11# show ip bgp summ</font></div=
><div><font face=3D"monospace, monospace">BGP router identifier 6.0.0.5, lo=
cal AS number 65101</font></div><div><font face=3D"monospace, monospace">BG=
P table version 25</font></div><div><font face=3D"monospace, monospace">RIB=
 entries 33, using 3960 bytes of memory</font></div><div><font face=3D"mono=
space, monospace">Peers 6, using 100 KiB of memory</font></div><div><font f=
ace=3D"monospace, monospace">Peer groups 1, using 56 bytes of memory</font>=
</div><div><font face=3D"monospace, monospace"><br></font></div><div><font =
face=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =
=C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/P=
fxRcd</font></div><div><font face=3D"monospace, monospace">swp1 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 196 =C2=A0 =C2=A0 198 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =
=C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">=
swp2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 195 =C2=
=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 0=
0:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospa=
ce, monospace">swp3 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0=
 =C2=A0 197 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font=
 face=3D"monospace, monospace">swp4 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A04 65000 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font>=
</div><div><font face=3D"monospace, monospace">swp5 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 207 =C2=A0 =C2=A0 200 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=
=A0 =C2=A02</font></div><div><font face=3D"monospace, monospace">swp6 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65202 =C2=A0 =C2=A0 210 =C2=A0 =C2=
=A0 201 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:52=
 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"monospace, mon=
ospace"><br></font></div><div><font face=3D"monospace, monospace">Total num=
ber of neighbors 6</font></div><div><font face=3D"monospace, monospace">lea=
f-11#</font></div></div><div><font face=3D"monospace, monospace"><br></font=
></div><div><font face=3D"monospace, monospace"><div>spine-3# show ip bgp s=
umm</div><div>BGP router identifier 6.0.0.15, local AS number 65000</div><d=
iv>BGP table version 19</div><div>RIB entries 33, using 3960 bytes of memor=
y</div><div>Peers 8, using 134 KiB of memory</div><div>Peer groups 1, using=
 56 bytes of memory</div><div><br></div><div>Neighbor =C2=A0 =C2=A0 =C2=A0 =
=C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Dow=
n =C2=A0State/PfxRcd</div><div>swp5 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A04 65101 =C2=A0 =C2=A0 675 =C2=A0 =C2=A0 675 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><=
div>swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 678=
 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 00:10:50 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp7 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 667 =C2=A0 =C2=A0 668 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:48 =C2=A0 =C2=A0 =
=C2=A0 =C2=A05</div><div>swp8 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65=
101 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp=
9 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65102 =C2=A0 =C2=A0 701 =C2=A0=
 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:1=
1:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp10 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
5</div><div>swp11 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 =
701 =C2=A0 =C2=A0 691 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp12 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =
=C2=A0 =C2=A05</div><div><br></div><div>Total number of neighbors 8</div><d=
iv>spine-3#</div><div>spine-3#</div><div><br></div></font></div><div><br></=
div><div><b>After</b></div><div><br></div><div><div><font face=3D"monospace=
, monospace">leaf-11# show ip bgp summ</font></div><div><font face=3D"monos=
pace, monospace">BGP router identifier 6.0.0.5, local AS number 65101</font=
></div><div><font face=3D"monospace, monospace">BGP table version 25</font>=
</div><div><font face=3D"monospace, monospace">RIB entries 33, using 3960 b=
ytes of memory</font></div><div><font face=3D"monospace, monospace">Peers 6=
, using 100 KiB of memory</font></div><div><font face=3D"monospace, monospa=
ce">Peer groups 1, using 56 bytes of memory</font></div><div><font face=3D"=
monospace, monospace"><br></font></div><div><font face=3D"monospace, monosp=
ace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =
=C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</font></div><div><f=
ont face=3D"monospace, monospace">spine-1(swp1) =C2=A0 4 65000 =C2=A0 =C2=
=A0 211 =C2=A0 =C2=A0 213 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font fa=
ce=3D"monospace, monospace">spine-2(swp2) =C2=A0 4 65000 =C2=A0 =C2=A0 210 =
=C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"mono=
space, monospace">spine-3(swp3) =C2=A0 4 65000 =C2=A0 =C2=A0 212 =C2=A0 =C2=
=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07=
 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, mon=
ospace">spine-4(swp4) =C2=A0 4 65000 =C2=A0 =C2=A0 213 =C2=A0 =C2=A0 215 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =
=C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">=
tor-11(swp5) =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 222 =C2=A0 =C2=A0 215 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=
=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"monospace, monospace">tor=
-12(swp6) =C2=A0 =C2=A04 65202 =C2=A0 =C2=A0 225 =C2=A0 =C2=A0 216 =C2=A0 =
=C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:08 =C2=A0 =C2=A0 =
=C2=A0 =C2=A02</font></div><div><font face=3D"monospace, monospace"><br></f=
ont></div><div><font face=3D"monospace, monospace">Total number of neighbor=
s 6</font></div><div><font face=3D"monospace, monospace">leaf-11#</font></d=
iv></div><div><br></div><div><div><font face=3D"monospace, monospace">spine=
-3# show ip bgp summ</font></div><div><font face=3D"monospace, monospace">B=
GP router identifier 6.0.0.15, local AS number 65000</font></div><div><font=
 face=3D"monospace, monospace">BGP table version 19</font></div><div><font =
face=3D"monospace, monospace">RIB entries 33, using 3960 bytes of memory</f=
ont></div><div><font face=3D"monospace, monospace">Peers 8, using 134 KiB o=
f memory</font></div><div><font face=3D"monospace, monospace">Peer groups 1=
, using 56 bytes of memory</font></div><div><font face=3D"monospace, monosp=
ace"><br></font></div><div><font face=3D"monospace, monospace">Neighbor =C2=
=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=
=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</font></div><div><font face=3D"monos=
pace, monospace">leaf-11(swp5) =C2=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=
=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, mon=
ospace">leaf-12(swp6) =C2=A0 4 65101 =C2=A0 =C2=A01122 =C2=A0 =C2=A01120 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:14 =C2=A0 =
=C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">=
leaf-13(swp7) =C2=A0 4 65101 =C2=A0 =C2=A01110 =C2=A0 =C2=A01111 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:12 =C2=A0 =C2=A0 =C2=
=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">leaf-14(sw=
p8) =C2=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=A01119 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
5</font></div><div><font face=3D"monospace, monospace">leaf-21(swp9) =C2=A0=
 4 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font><=
/div><div><font face=3D"monospace, monospace">leaf-22(swp10) =C2=A04 65102 =
=C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div>=
<font face=3D"monospace, monospace">leaf-23(swp11) =C2=A04 65102 =C2=A0 =C2=
=A01144 =C2=A0 =C2=A01134 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font fa=
ce=3D"monospace, monospace">leaf-24(swp12) =C2=A04 65102 =C2=A0 =C2=A01144 =
=C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"mono=
space, monospace"><br></font></div><div><font face=3D"monospace, monospace"=
>Total number of neighbors 8</font></div><div><font face=3D"monospace, mono=
space">spine-3#</font></div></div><div><br></div><div>It makes troubleshoot=
ing much easier.</div><div><br></div><div>Daniel</div><div><br><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, May 15, 2015 at 9:5=
8 PM,  <span dir=3D"ltr">&lt;<a>deleskie@gmail.com</a>&gt;</span> wrote:<br=
><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border=
-left:1px solid rgb(204,204,204);padding-left:1ex">Agree.. adding code for =
no real operational benefit<br>
<br>
Sent from my BlackBerry 10 smartphone on the Rogers network.<br>
=C2=A0 Original Message =C2=A0<br>
From: Randy Bush<br>
Sent: Friday, May 15, 2015 10:52 PM<br>
To: Daniel Walton<br>
Cc: idr wg; Dinesh Dutt<br>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00<br>
<span><br>
one more unneeded place for things to go wrong<br>
<br>
randy<br>
<br>
</span>_______________________________________________<br>
Idr mailing list<br>
<a>Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote></div><br></div></div></div>
</blockquote></div>
</div></div></blockquote></div><br></div></div>

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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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--089e0115f10611b00a05162d0f3d
Content-Type: text/plain; charset=UTF-8

Hi Dinesh,

Q1 - how do you ping physical interface not a loopback

Q2 - how about lookup on bgp rtr id instead LL address to get the name ?

Cheers,
R.

On Saturday, May 16, 2015, Dinesh Dutt <ddutt@cumulusnetworks.com> wrote:

> Hi Robert,
>
> On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk <robert@raszuk.net
> <javascript:_e(%7B%7D,'cvml','robert@raszuk.net');>> wrote:
>
>> Hi Daniel & Dinesh,
>>
>> I very much like the intention, but have a concern how it would simplify
>> troubleshooting in practice ...
>>
>> Imagine we exchange the names in new capability when session comes up so
>> we list it in summary output instead of link local address. But when you
>> try to trace or ping that name (from pc or router) your local or global DNS
>> will return not the LL address but most likely loopback so the results will
>> be rather of questionable value.
>>
>
> I'm confused. Why would we send a hostname in this capability that is
> different from the one assigned to loopback ? Within the DC at least,
> people don't advertise link addresses at all, only the loopback.  So, the
> hostname exchanged in the capability would be the same as the one returned
> by traceroute/ping.
>
> Dinesh
>
>
>> Would you not see this as a problem ? I hope you did not intended to just
>> cover the cosmetic nature of few show commands which I must agree with
>> others is rather a legacy way to operate the network these days anyway ;)).
>>
>
>
>
>>
>> Cheers,
>> R.
>>
>>
>> On Saturday, May 16, 2015, Daniel Walton <dwalton@cumulusnetworks.com
>> <javascript:_e(%7B%7D,'cvml','dwalton@cumulusnetworks.com');>> wrote:
>>
>>> Many of our customers use a Clos architecture and bgp peer to the IPv6
>>> LL address of every directly connected router.  To avoid configuring
>>> neighbor statements with LL addresses we support a "neighbor swpX
>>> interface" command ("swpX" is the default notation for an interface name in
>>> cumulus linux).  We then peer to the LL address on the other end of the
>>> swpX link (we only support this for point-to-point links).
>>>
>>> When you run commands like "show ip bgp summary" you see a list of
>>> interface names instead of IP addresses. Typically if you are loopback
>>> peering you either become familiar with "10.0.0.1 is Chicago" because you
>>> see 10.0.0.1 in the 'show ip bgp summ' output of several different routers
>>> or you could use DNS to do a lookup on 10.0.0.1 and put the hostname in the
>>> output.  When every box is peering to LL addresses though ("swpX" for short
>>> for us) you can't easily tell who that peer is and you can't use DNS
>>> because they LL addresses
>>>
>>> *Before*
>>>
>>> leaf-11# show ip bgp summ
>>> BGP router identifier 6.0.0.5, local AS number 65101
>>> BGP table version 25
>>> RIB entries 33, using 3960 bytes of memory
>>> Peers 6, using 100 KiB of memory
>>> Peer groups 1, using 56 bytes of memory
>>>
>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>  State/PfxRcd
>>> swp1            4 65000     196     198        0    0    0 00:02:51
>>>    9
>>> swp2            4 65000     195     200        0    0    0 00:02:51
>>>    9
>>> swp3            4 65000     197     200        0    0    0 00:02:51
>>>    9
>>> swp4            4 65000     198     200        0    0    0 00:02:51
>>>    9
>>> swp5            4 65201     207     200        0    0    0 00:02:51
>>>    2
>>> swp6            4 65202     210     201        0    0    0 00:02:52
>>>    2
>>>
>>> Total number of neighbors 6
>>> leaf-11#
>>>
>>> spine-3# show ip bgp summ
>>> BGP router identifier 6.0.0.15, local AS number 65000
>>> BGP table version 19
>>> RIB entries 33, using 3960 bytes of memory
>>> Peers 8, using 134 KiB of memory
>>> Peer groups 1, using 56 bytes of memory
>>>
>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>  State/PfxRcd
>>> swp5            4 65101     675     675        0    0    0 00:10:49
>>>    5
>>> swp6            4 65101     678     676        0    0    0 00:10:50
>>>    5
>>> swp7            4 65101     667     668        0    0    0 00:10:48
>>>    5
>>> swp8            4 65101     676     676        0    0    0 00:10:49
>>>    5
>>> swp9            4 65102     701     692        0    0    0 00:11:04
>>>    5
>>> swp10           4 65102     701     692        0    0    0 00:11:04
>>>    5
>>> swp11           4 65102     701     691        0    0    0 00:11:04
>>>    5
>>> swp12           4 65102     701     692        0    0    0 00:11:04
>>>    5
>>>
>>> Total number of neighbors 8
>>> spine-3#
>>> spine-3#
>>>
>>>
>>> *After*
>>>
>>> leaf-11# show ip bgp summ
>>> BGP router identifier 6.0.0.5, local AS number 65101
>>> BGP table version 25
>>> RIB entries 33, using 3960 bytes of memory
>>> Peers 6, using 100 KiB of memory
>>> Peer groups 1, using 56 bytes of memory
>>>
>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>  State/PfxRcd
>>> spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07
>>>    9
>>> spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07
>>>    9
>>> spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07
>>>    9
>>> spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07
>>>    9
>>> tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07
>>>    2
>>> tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08
>>>    2
>>>
>>> Total number of neighbors 6
>>> leaf-11#
>>>
>>> spine-3# show ip bgp summ
>>> BGP router identifier 6.0.0.15, local AS number 65000
>>> BGP table version 19
>>> RIB entries 33, using 3960 bytes of memory
>>> Peers 8, using 134 KiB of memory
>>> Peer groups 1, using 56 bytes of memory
>>>
>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>  State/PfxRcd
>>> leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13
>>>    5
>>> leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14
>>>    5
>>> leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12
>>>    5
>>> leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13
>>>    5
>>> leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28
>>>    5
>>> leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28
>>>    5
>>> leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28
>>>    5
>>> leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28
>>>    5
>>>
>>> Total number of neighbors 8
>>> spine-3#
>>>
>>> It makes troubleshooting much easier.
>>>
>>> Daniel
>>>
>>>
>>> On Fri, May 15, 2015 at 9:58 PM, <deleskie@gmail.com> wrote:
>>>
>>>> Agree.. adding code for no real operational benefit
>>>>
>>>> Sent from my BlackBerry 10 smartphone on the Rogers network.
>>>>   Original Message
>>>> From: Randy Bush
>>>> Sent: Friday, May 15, 2015 10:52 PM
>>>> To: Daniel Walton
>>>> Cc: idr wg; Dinesh Dutt
>>>> Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
>>>>
>>>> one more unneeded place for things to go wrong
>>>>
>>>> randy
>>>>
>>>> _______________________________________________
>>>> Idr mailing list
>>>> Idr@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/idr
>>>>
>>>
>>>
>

--089e0115f10611b00a05162d0f3d
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hi Dinesh,<div><br></div>Q1 - how do you ping physical=C2=A0interface not a=
 loopback=C2=A0<div><br></div><div>Q2 - how about lookup on bgp rtr id inst=
ead LL address=C2=A0to get the name ?</div><div><br></div><div>Cheers,</div=
><div>R.<br><div><br>On Saturday, May 16, 2015, Dinesh Dutt &lt;<a href=3D"=
mailto:ddutt@cumulusnetworks.com">ddutt@cumulusnetworks.com</a>&gt; wrote:<=
br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left=
:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi Robert,<br><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, May 15, 2015 at 11:=
01 PM, Robert Raszuk <span dir=3D"ltr">&lt;<a href=3D"javascript:_e(%7B%7D,=
&#39;cvml&#39;,&#39;robert@raszuk.net&#39;);" target=3D"_blank">robert@rasz=
uk.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"=
margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Daniel &a=
mp; Dinesh,<div><br></div><div>I very much like the intention, but have a c=
oncern how it would simplify troubleshooting in practice ...</div><div><br>=
</div><div>Imagine we exchange the names in new capability when session com=
es up=C2=A0so we list it in summary output instead of link local address. B=
ut when you try to trace or ping that name (from pc or router)=C2=A0your lo=
cal or global DNS will return not the LL address but most likely loopback s=
o the results will be rather of=C2=A0questionable value.</div></blockquote>=
<div><br></div><div>I&#39;m confused. Why would we send a hostname in this =
capability that is different from the one assigned to loopback ? Within the=
 DC at least, people don&#39;t advertise link addresses at all, only the lo=
opback.=C2=A0 So, the hostname exchanged in the capability would be the sam=
e as the one returned by traceroute/ping.<br><br></div><div>Dinesh<br></div=
><div><br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex"><div><br></div><div>Would yo=
u not see this as a problem ? I hope you did not intended to just cover the=
 cosmetic nature of few show commands which I must agree with others is rat=
her a=C2=A0legacy way to operate the network these days anyway ;)).</div></=
blockquote><div><br>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"=
margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><br></d=
iv><div>Cheers,</div><div>R.</div><div><div><div><br></div><div><br>On Satu=
rday, May 16, 2015, Daniel Walton &lt;<a href=3D"javascript:_e(%7B%7D,&#39;=
cvml&#39;,&#39;dwalton@cumulusnetworks.com&#39;);" target=3D"_blank">dwalto=
n@cumulusnetworks.com</a>&gt; wrote:<br><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div=
 dir=3D"ltr"><div>Many of our customers use a Clos architecture and bgp pee=
r to the IPv6 LL address of every directly connected router.=C2=A0 To avoid=
 configuring neighbor statements with LL addresses we support a &quot;neigh=
bor swpX interface&quot; command (&quot;swpX&quot; is the default notation =
for an interface name in cumulus linux).=C2=A0 We then peer to the LL addre=
ss on the other end of the swpX link (we only support this for point-to-poi=
nt links). =C2=A0</div><div><br></div><div>When you run commands like &quot=
;show ip bgp summary&quot; you see a list of interface names instead of IP =
addresses. Typically if you are loopback peering you either become familiar=
 with &quot;10.0.0.1 is Chicago&quot; because you see 10.0.0.1 in the &#39;=
show ip bgp summ&#39; output of several different routers or you could use =
DNS to do a lookup on 10.0.0.1 and put the hostname in the output.=C2=A0 Wh=
en every box is peering to LL addresses though (&quot;swpX&quot; for short =
for us) you can&#39;t easily tell who that peer is and you can&#39;t use DN=
S because they LL addresses</div><div><br></div><div><b>Before</b><br></div=
><div><br></div><div><div><font face=3D"monospace, monospace">leaf-11# show=
 ip bgp summ</font></div><div><font face=3D"monospace, monospace">BGP route=
r identifier 6.0.0.5, local AS number 65101</font></div><div><font face=3D"=
monospace, monospace">BGP table version 25</font></div><div><font face=3D"m=
onospace, monospace">RIB entries 33, using 3960 bytes of memory</font></div=
><div><font face=3D"monospace, monospace">Peers 6, using 100 KiB of memory<=
/font></div><div><font face=3D"monospace, monospace">Peer groups 1, using 5=
6 bytes of memory</font></div><div><font face=3D"monospace, monospace"><br>=
</font></div><div><font face=3D"monospace, monospace">Neighbor =C2=A0 =C2=
=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ =
OutQ Up/Down =C2=A0State/PfxRcd</font></div><div><font face=3D"monospace, m=
onospace">swp1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=
=A0 196 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font fa=
ce=3D"monospace, monospace">swp2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04=
 65000 =C2=A0 =C2=A0 195 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></di=
v><div><font face=3D"monospace, monospace">swp3 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 197 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=
=A09</font></div><div><font face=3D"monospace, monospace">swp4 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 200 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =
=C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">=
swp5 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 207 =C2=
=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 0=
0:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"monospa=
ce, monospace">swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65202 =C2=A0=
 =C2=A0 210 =C2=A0 =C2=A0 201 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:02:52 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font=
 face=3D"monospace, monospace"><br></font></div><div><font face=3D"monospac=
e, monospace">Total number of neighbors 6</font></div><div><font face=3D"mo=
nospace, monospace">leaf-11#</font></div></div><div><font face=3D"monospace=
, monospace"><br></font></div><div><font face=3D"monospace, monospace"><div=
>spine-3# show ip bgp summ</div><div>BGP router identifier 6.0.0.15, local =
AS number 65000</div><div>BGP table version 19</div><div>RIB entries 33, us=
ing 3960 bytes of memory</div><div>Peers 8, using 134 KiB of memory</div><d=
iv>Peer groups 1, using 56 bytes of memory</div><div><br></div><div>Neighbo=
r =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVe=
r =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</div><div>swp5 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 675 =C2=A0 =C2=A0 675 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=
=A0 =C2=A0 =C2=A05</div><div>swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
4 65101 =C2=A0 =C2=A0 678 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:50 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><d=
iv>swp7 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 667 =
=C2=A0 =C2=A0 668 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:10:48 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp8 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 676 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=A0 =C2=
=A0 =C2=A05</div><div>swp9 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65102=
 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp1=
0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=
=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp11 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 691 =C2=A0 =C2=A0 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</d=
iv><div>swp12 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =
=C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div><br></div><div>Total numb=
er of neighbors 8</div><div>spine-3#</div><div>spine-3#</div><div><br></div=
></font></div><div><br></div><div><b>After</b></div><div><br></div><div><di=
v><font face=3D"monospace, monospace">leaf-11# show ip bgp summ</font></div=
><div><font face=3D"monospace, monospace">BGP router identifier 6.0.0.5, lo=
cal AS number 65101</font></div><div><font face=3D"monospace, monospace">BG=
P table version 25</font></div><div><font face=3D"monospace, monospace">RIB=
 entries 33, using 3960 bytes of memory</font></div><div><font face=3D"mono=
space, monospace">Peers 6, using 100 KiB of memory</font></div><div><font f=
ace=3D"monospace, monospace">Peer groups 1, using 56 bytes of memory</font>=
</div><div><font face=3D"monospace, monospace"><br></font></div><div><font =
face=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =
=C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/P=
fxRcd</font></div><div><font face=3D"monospace, monospace">spine-1(swp1) =
=C2=A0 4 65000 =C2=A0 =C2=A0 211 =C2=A0 =C2=A0 213 =C2=A0 =C2=A0 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</f=
ont></div><div><font face=3D"monospace, monospace">spine-2(swp2) =C2=A0 4 6=
5000 =C2=A0 =C2=A0 210 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></di=
v><div><font face=3D"monospace, monospace">spine-3(swp3) =C2=A0 4 65000 =C2=
=A0 =C2=A0 212 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><fo=
nt face=3D"monospace, monospace">spine-4(swp4) =C2=A0 4 65000 =C2=A0 =C2=A0=
 213 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=
=3D"monospace, monospace">tor-11(swp5) =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 2=
22 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"m=
onospace, monospace">tor-12(swp6) =C2=A0 =C2=A04 65202 =C2=A0 =C2=A0 225 =
=C2=A0 =C2=A0 216 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:03:08 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"mono=
space, monospace"><br></font></div><div><font face=3D"monospace, monospace"=
>Total number of neighbors 6</font></div><div><font face=3D"monospace, mono=
space">leaf-11#</font></div></div><div><br></div><div><div><font face=3D"mo=
nospace, monospace">spine-3# show ip bgp summ</font></div><div><font face=
=3D"monospace, monospace">BGP router identifier 6.0.0.15, local AS number 6=
5000</font></div><div><font face=3D"monospace, monospace">BGP table version=
 19</font></div><div><font face=3D"monospace, monospace">RIB entries 33, us=
ing 3960 bytes of memory</font></div><div><font face=3D"monospace, monospac=
e">Peers 8, using 134 KiB of memory</font></div><div><font face=3D"monospac=
e, monospace">Peer groups 1, using 56 bytes of memory</font></div><div><fon=
t face=3D"monospace, monospace"><br></font></div><div><font face=3D"monospa=
ce, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcv=
d MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</font></d=
iv><div><font face=3D"monospace, monospace">leaf-11(swp5) =C2=A0 4 65101 =
=C2=A0 =C2=A01119 =C2=A0 =C2=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 00:18:13 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div>=
<font face=3D"monospace, monospace">leaf-12(swp6) =C2=A0 4 65101 =C2=A0 =C2=
=A01122 =C2=A0 =C2=A01120 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:18:14 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font fa=
ce=3D"monospace, monospace">leaf-13(swp7) =C2=A0 4 65101 =C2=A0 =C2=A01110 =
=C2=A0 =C2=A01111 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:18:12 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"mono=
space, monospace">leaf-14(swp8) =C2=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=
=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, mon=
ospace">leaf-21(swp9) =C2=A0 4 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =
=C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">=
leaf-22(swp10) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=
=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">leaf-23(sw=
p11) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01134 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
5</font></div><div><font face=3D"monospace, monospace">leaf-24(swp12) =C2=
=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font>=
</div><div><font face=3D"monospace, monospace"><br></font></div><div><font =
face=3D"monospace, monospace">Total number of neighbors 8</font></div><div>=
<font face=3D"monospace, monospace">spine-3#</font></div></div><div><br></d=
iv><div>It makes troubleshooting much easier.</div><div><br></div><div>Dani=
el</div><div><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">=
On Fri, May 15, 2015 at 9:58 PM,  <span dir=3D"ltr">&lt;<a>deleskie@gmail.c=
om</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,20=
4);border-left-style:solid;padding-left:1ex">Agree.. adding code for no rea=
l operational benefit<br>
<br>
Sent from my BlackBerry 10 smartphone on the Rogers network.<br>
=C2=A0 Original Message =C2=A0<br>
From: Randy Bush<br>
Sent: Friday, May 15, 2015 10:52 PM<br>
To: Daniel Walton<br>
Cc: idr wg; Dinesh Dutt<br>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00<br>
<span><br>
one more unneeded place for things to go wrong<br>
<br>
randy<br>
<br>
</span>_______________________________________________<br>
Idr mailing list<br>
<a>Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote></div><br></div></div></div>
</blockquote></div>
</div></div></blockquote></div><br></div></div>
</blockquote></div></div>

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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Sat, 16 May 2015 00:00:27 -0700
Message-ID: <CABg5FUVSq4Xunivo3tBNh0=x+W=ZOD9pUYGWs18EcuXiFG-4MQ@mail.gmail.com>
To: Robert Raszuk <robert@raszuk.net>
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Cc: idr wg <idr@ietf.org>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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--047d7bfea3f23af3b705162d85b9
Content-Type: text/plain; charset=UTF-8

Hi Robert,

On Fri, May 15, 2015 at 11:27 PM, Robert Raszuk <robert@raszuk.net> wrote:

> Hi Dinesh,
>
> Q1 - how do you ping physical interface not a loopback


In the DC, common practice I've seen is pinging node, not physical
interface. The physical interface addresses aren't even advertised to be
able to be reachable more than one hop away.


>
> Q2 - how about lookup on bgp rtr id instead LL address to get the name ?
>

I don't lookup LL address. Router ID is typically the loopback IP address
in DC,

Dinesh

>
> Cheers,
> R.
>
>
> On Saturday, May 16, 2015, Dinesh Dutt <ddutt@cumulusnetworks.com> wrote:
>
>> Hi Robert,
>>
>> On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk <robert@raszuk.net>
>> wrote:
>>
>>> Hi Daniel & Dinesh,
>>>
>>> I very much like the intention, but have a concern how it would simplify
>>> troubleshooting in practice ...
>>>
>>> Imagine we exchange the names in new capability when session comes up so
>>> we list it in summary output instead of link local address. But when you
>>> try to trace or ping that name (from pc or router) your local or global DNS
>>> will return not the LL address but most likely loopback so the results will
>>> be rather of questionable value.
>>>
>>
>> I'm confused. Why would we send a hostname in this capability that is
>> different from the one assigned to loopback ? Within the DC at least,
>> people don't advertise link addresses at all, only the loopback.  So, the
>> hostname exchanged in the capability would be the same as the one returned
>> by traceroute/ping.
>>
>> Dinesh
>>
>>
>>> Would you not see this as a problem ? I hope you did not intended to
>>> just cover the cosmetic nature of few show commands which I must agree with
>>> others is rather a legacy way to operate the network these days anyway ;)).
>>>
>>
>>
>>
>>>
>>> Cheers,
>>> R.
>>>
>>>
>>> On Saturday, May 16, 2015, Daniel Walton <dwalton@cumulusnetworks.com>
>>> wrote:
>>>
>>>> Many of our customers use a Clos architecture and bgp peer to the IPv6
>>>> LL address of every directly connected router.  To avoid configuring
>>>> neighbor statements with LL addresses we support a "neighbor swpX
>>>> interface" command ("swpX" is the default notation for an interface name in
>>>> cumulus linux).  We then peer to the LL address on the other end of the
>>>> swpX link (we only support this for point-to-point links).
>>>>
>>>> When you run commands like "show ip bgp summary" you see a list of
>>>> interface names instead of IP addresses. Typically if you are loopback
>>>> peering you either become familiar with "10.0.0.1 is Chicago" because you
>>>> see 10.0.0.1 in the 'show ip bgp summ' output of several different routers
>>>> or you could use DNS to do a lookup on 10.0.0.1 and put the hostname in the
>>>> output.  When every box is peering to LL addresses though ("swpX" for short
>>>> for us) you can't easily tell who that peer is and you can't use DNS
>>>> because they LL addresses
>>>>
>>>> *Before*
>>>>
>>>> leaf-11# show ip bgp summ
>>>> BGP router identifier 6.0.0.5, local AS number 65101
>>>> BGP table version 25
>>>> RIB entries 33, using 3960 bytes of memory
>>>> Peers 6, using 100 KiB of memory
>>>> Peer groups 1, using 56 bytes of memory
>>>>
>>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>>  State/PfxRcd
>>>> swp1            4 65000     196     198        0    0    0 00:02:51
>>>>    9
>>>> swp2            4 65000     195     200        0    0    0 00:02:51
>>>>    9
>>>> swp3            4 65000     197     200        0    0    0 00:02:51
>>>>    9
>>>> swp4            4 65000     198     200        0    0    0 00:02:51
>>>>    9
>>>> swp5            4 65201     207     200        0    0    0 00:02:51
>>>>    2
>>>> swp6            4 65202     210     201        0    0    0 00:02:52
>>>>    2
>>>>
>>>> Total number of neighbors 6
>>>> leaf-11#
>>>>
>>>> spine-3# show ip bgp summ
>>>> BGP router identifier 6.0.0.15, local AS number 65000
>>>> BGP table version 19
>>>> RIB entries 33, using 3960 bytes of memory
>>>> Peers 8, using 134 KiB of memory
>>>> Peer groups 1, using 56 bytes of memory
>>>>
>>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>>  State/PfxRcd
>>>> swp5            4 65101     675     675        0    0    0 00:10:49
>>>>    5
>>>> swp6            4 65101     678     676        0    0    0 00:10:50
>>>>    5
>>>> swp7            4 65101     667     668        0    0    0 00:10:48
>>>>    5
>>>> swp8            4 65101     676     676        0    0    0 00:10:49
>>>>    5
>>>> swp9            4 65102     701     692        0    0    0 00:11:04
>>>>    5
>>>> swp10           4 65102     701     692        0    0    0 00:11:04
>>>>    5
>>>> swp11           4 65102     701     691        0    0    0 00:11:04
>>>>    5
>>>> swp12           4 65102     701     692        0    0    0 00:11:04
>>>>    5
>>>>
>>>> Total number of neighbors 8
>>>> spine-3#
>>>> spine-3#
>>>>
>>>>
>>>> *After*
>>>>
>>>> leaf-11# show ip bgp summ
>>>> BGP router identifier 6.0.0.5, local AS number 65101
>>>> BGP table version 25
>>>> RIB entries 33, using 3960 bytes of memory
>>>> Peers 6, using 100 KiB of memory
>>>> Peer groups 1, using 56 bytes of memory
>>>>
>>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>>  State/PfxRcd
>>>> spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07
>>>>    9
>>>> spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07
>>>>    9
>>>> spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07
>>>>    9
>>>> spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07
>>>>    9
>>>> tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07
>>>>    2
>>>> tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08
>>>>    2
>>>>
>>>> Total number of neighbors 6
>>>> leaf-11#
>>>>
>>>> spine-3# show ip bgp summ
>>>> BGP router identifier 6.0.0.15, local AS number 65000
>>>> BGP table version 19
>>>> RIB entries 33, using 3960 bytes of memory
>>>> Peers 8, using 134 KiB of memory
>>>> Peer groups 1, using 56 bytes of memory
>>>>
>>>> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
>>>>  State/PfxRcd
>>>> leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13
>>>>    5
>>>> leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14
>>>>    5
>>>> leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12
>>>>    5
>>>> leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13
>>>>    5
>>>> leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28
>>>>    5
>>>> leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28
>>>>    5
>>>> leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28
>>>>    5
>>>> leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28
>>>>    5
>>>>
>>>> Total number of neighbors 8
>>>> spine-3#
>>>>
>>>> It makes troubleshooting much easier.
>>>>
>>>> Daniel
>>>>
>>>>
>>>> On Fri, May 15, 2015 at 9:58 PM, <deleskie@gmail.com> wrote:
>>>>
>>>>> Agree.. adding code for no real operational benefit
>>>>>
>>>>> Sent from my BlackBerry 10 smartphone on the Rogers network.
>>>>>   Original Message
>>>>> From: Randy Bush
>>>>> Sent: Friday, May 15, 2015 10:52 PM
>>>>> To: Daniel Walton
>>>>> Cc: idr wg; Dinesh Dutt
>>>>> Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
>>>>>
>>>>> one more unneeded place for things to go wrong
>>>>>
>>>>> randy
>>>>>
>>>>> _______________________________________________
>>>>> Idr mailing list
>>>>> Idr@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/idr
>>>>>
>>>>
>>>>
>>

--047d7bfea3f23af3b705162d85b9
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Robert,<br><div><div class=3D"gmail_extra"><br><div cla=
ss=3D"gmail_quote">On Fri, May 15, 2015 at 11:27 PM, Robert Raszuk <span di=
r=3D"ltr">&lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank">robert=
@raszuk.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Dine=
sh,<div><br></div>Q1 - how do you ping physical=C2=A0interface not a loopba=
ck=C2=A0</blockquote><div><br></div><div>In the DC, common practice I&#39;v=
e seen is pinging node, not physical interface. The physical interface addr=
esses aren&#39;t even advertised to be able to be reachable more than one h=
op away.<br>=C2=A0<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><br></div><=
div>Q2 - how about lookup on bgp rtr id instead LL address=C2=A0to get the =
name ?</div></blockquote><div><br></div><div>I don&#39;t lookup LL address.=
 Router ID is typically the loopback IP address in DC, <br><br></div><div>D=
inesh <br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex"><div><br></div><div>Cheers,<=
/div><div>R.<div><div class=3D"h5"><br><div><br>On Saturday, May 16, 2015, =
Dinesh Dutt &lt;<a href=3D"mailto:ddutt@cumulusnetworks.com" target=3D"_bla=
nk">ddutt@cumulusnetworks.com</a>&gt; wrote:<br><blockquote class=3D"gmail_=
quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1=
ex"><div dir=3D"ltr">Hi Robert,<br><div class=3D"gmail_extra"><br><div clas=
s=3D"gmail_quote">On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk <span dir=
=3D"ltr">&lt;<a>robert@raszuk.net</a>&gt;</span> wrote:<br><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex">Hi Daniel &amp; Dinesh,<div><br></div><div>I very much like =
the intention, but have a concern how it would simplify troubleshooting in =
practice ...</div><div><br></div><div>Imagine we exchange the names in new =
capability when session comes up=C2=A0so we list it in summary output inste=
ad of link local address. But when you try to trace or ping that name (from=
 pc or router)=C2=A0your local or global DNS will return not the LL address=
 but most likely loopback so the results will be rather of=C2=A0questionabl=
e value.</div></blockquote><div><br></div><div>I&#39;m confused. Why would =
we send a hostname in this capability that is different from the one assign=
ed to loopback ? Within the DC at least, people don&#39;t advertise link ad=
dresses at all, only the loopback.=C2=A0 So, the hostname exchanged in the =
capability would be the same as the one returned by traceroute/ping.<br><br=
></div><div>Dinesh<br></div><div><br></div><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><=
div><br></div><div>Would you not see this as a problem ? I hope you did not=
 intended to just cover the cosmetic nature of few show commands which I mu=
st agree with others is rather a=C2=A0legacy way to operate the network the=
se days anyway ;)).</div></blockquote><div><br>=C2=A0</div><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex"><div><br></div><div>Cheers,</div><div>R.</div><div><div><div=
><br></div><div><br>On Saturday, May 16, 2015, Daniel Walton &lt;<a>dwalton=
@cumulusnetworks.com</a>&gt; wrote:<br><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div =
dir=3D"ltr"><div>Many of our customers use a Clos architecture and bgp peer=
 to the IPv6 LL address of every directly connected router.=C2=A0 To avoid =
configuring neighbor statements with LL addresses we support a &quot;neighb=
or swpX interface&quot; command (&quot;swpX&quot; is the default notation f=
or an interface name in cumulus linux).=C2=A0 We then peer to the LL addres=
s on the other end of the swpX link (we only support this for point-to-poin=
t links). =C2=A0</div><div><br></div><div>When you run commands like &quot;=
show ip bgp summary&quot; you see a list of interface names instead of IP a=
ddresses. Typically if you are loopback peering you either become familiar =
with &quot;10.0.0.1 is Chicago&quot; because you see 10.0.0.1 in the &#39;s=
how ip bgp summ&#39; output of several different routers or you could use D=
NS to do a lookup on 10.0.0.1 and put the hostname in the output.=C2=A0 Whe=
n every box is peering to LL addresses though (&quot;swpX&quot; for short f=
or us) you can&#39;t easily tell who that peer is and you can&#39;t use DNS=
 because they LL addresses</div><div><br></div><div><b>Before</b><br></div>=
<div><br></div><div><div><font face=3D"monospace, monospace">leaf-11# show =
ip bgp summ</font></div><div><font face=3D"monospace, monospace">BGP router=
 identifier 6.0.0.5, local AS number 65101</font></div><div><font face=3D"m=
onospace, monospace">BGP table version 25</font></div><div><font face=3D"mo=
nospace, monospace">RIB entries 33, using 3960 bytes of memory</font></div>=
<div><font face=3D"monospace, monospace">Peers 6, using 100 KiB of memory</=
font></div><div><font face=3D"monospace, monospace">Peer groups 1, using 56=
 bytes of memory</font></div><div><font face=3D"monospace, monospace"><br><=
/font></div><div><font face=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0=
 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ Out=
Q Up/Down =C2=A0State/PfxRcd</font></div><div><font face=3D"monospace, mono=
space">swp1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 =
196 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=
=3D"monospace, monospace">swp2 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 6=
5000 =C2=A0 =C2=A0 195 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></di=
v><div><font face=3D"monospace, monospace">swp3 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 197 =C2=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=
=A09</font></div><div><font face=3D"monospace, monospace">swp4 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65000 =C2=A0 =C2=A0 198 =C2=A0 =C2=A0 200 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:02:51 =C2=A0 =
=C2=A0 =C2=A0 =C2=A09</font></div><div><font face=3D"monospace, monospace">=
swp5 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 207 =C2=
=A0 =C2=A0 200 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 0=
0:02:51 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"monospa=
ce, monospace">swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65202 =C2=A0=
 =C2=A0 210 =C2=A0 =C2=A0 201 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 00:02:52 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font=
 face=3D"monospace, monospace"><br></font></div><div><font face=3D"monospac=
e, monospace">Total number of neighbors 6</font></div><div><font face=3D"mo=
nospace, monospace">leaf-11#</font></div></div><div><font face=3D"monospace=
, monospace"><br></font></div><div><font face=3D"monospace, monospace"><div=
>spine-3# show ip bgp summ</div><div>BGP router identifier 6.0.0.15, local =
AS number 65000</div><div>BGP table version 19</div><div>RIB entries 33, us=
ing 3960 bytes of memory</div><div>Peers 8, using 134 KiB of memory</div><d=
iv>Peer groups 1, using 56 bytes of memory</div><div><br></div><div>Neighbo=
r =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcvd MsgSent =C2=A0 TblVe=
r =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</div><div>swp5 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 675 =C2=A0 =C2=A0 675 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=
=A0 =C2=A0 =C2=A05</div><div>swp6 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
4 65101 =C2=A0 =C2=A0 678 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =
=C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:50 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><d=
iv>swp7 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 667 =
=C2=A0 =C2=A0 668 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:10:48 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp8 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A04 65101 =C2=A0 =C2=A0 676 =C2=A0 =C2=A0 676 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:10:49 =C2=A0 =C2=A0 =C2=
=A0 =C2=A05</div><div>swp9 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04 65102=
 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp1=
0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=
=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div>swp11 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 4 65102 =C2=A0 =C2=A0 701 =C2=A0 =C2=A0 691 =C2=A0 =C2=A0 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</d=
iv><div>swp12 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4 65102 =C2=A0 =C2=A0 701 =
=C2=A0 =C2=A0 692 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:11:04 =C2=A0 =C2=A0 =C2=A0 =C2=A05</div><div><br></div><div>Total numb=
er of neighbors 8</div><div>spine-3#</div><div>spine-3#</div><div><br></div=
></font></div><div><br></div><div><b>After</b></div><div><br></div><div><di=
v><font face=3D"monospace, monospace">leaf-11# show ip bgp summ</font></div=
><div><font face=3D"monospace, monospace">BGP router identifier 6.0.0.5, lo=
cal AS number 65101</font></div><div><font face=3D"monospace, monospace">BG=
P table version 25</font></div><div><font face=3D"monospace, monospace">RIB=
 entries 33, using 3960 bytes of memory</font></div><div><font face=3D"mono=
space, monospace">Peers 6, using 100 KiB of memory</font></div><div><font f=
ace=3D"monospace, monospace">Peer groups 1, using 56 bytes of memory</font>=
</div><div><font face=3D"monospace, monospace"><br></font></div><div><font =
face=3D"monospace, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =
=C2=A0AS MsgRcvd MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/P=
fxRcd</font></div><div><font face=3D"monospace, monospace">spine-1(swp1) =
=C2=A0 4 65000 =C2=A0 =C2=A0 211 =C2=A0 =C2=A0 213 =C2=A0 =C2=A0 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</f=
ont></div><div><font face=3D"monospace, monospace">spine-2(swp2) =C2=A0 4 6=
5000 =C2=A0 =C2=A0 210 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></di=
v><div><font face=3D"monospace, monospace">spine-3(swp3) =C2=A0 4 65000 =C2=
=A0 =C2=A0 212 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 =C2=A0 =C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><fo=
nt face=3D"monospace, monospace">spine-4(swp4) =C2=A0 4 65000 =C2=A0 =C2=A0=
 213 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =
=C2=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A09</font></div><div><font face=
=3D"monospace, monospace">tor-11(swp5) =C2=A0 =C2=A04 65201 =C2=A0 =C2=A0 2=
22 =C2=A0 =C2=A0 215 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 00:03:07 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"m=
onospace, monospace">tor-12(swp6) =C2=A0 =C2=A04 65202 =C2=A0 =C2=A0 225 =
=C2=A0 =C2=A0 216 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:03:08 =C2=A0 =C2=A0 =C2=A0 =C2=A02</font></div><div><font face=3D"mono=
space, monospace"><br></font></div><div><font face=3D"monospace, monospace"=
>Total number of neighbors 6</font></div><div><font face=3D"monospace, mono=
space">leaf-11#</font></div></div><div><br></div><div><div><font face=3D"mo=
nospace, monospace">spine-3# show ip bgp summ</font></div><div><font face=
=3D"monospace, monospace">BGP router identifier 6.0.0.15, local AS number 6=
5000</font></div><div><font face=3D"monospace, monospace">BGP table version=
 19</font></div><div><font face=3D"monospace, monospace">RIB entries 33, us=
ing 3960 bytes of memory</font></div><div><font face=3D"monospace, monospac=
e">Peers 8, using 134 KiB of memory</font></div><div><font face=3D"monospac=
e, monospace">Peer groups 1, using 56 bytes of memory</font></div><div><fon=
t face=3D"monospace, monospace"><br></font></div><div><font face=3D"monospa=
ce, monospace">Neighbor =C2=A0 =C2=A0 =C2=A0 =C2=A0V =C2=A0 =C2=A0AS MsgRcv=
d MsgSent =C2=A0 TblVer =C2=A0InQ OutQ Up/Down =C2=A0State/PfxRcd</font></d=
iv><div><font face=3D"monospace, monospace">leaf-11(swp5) =C2=A0 4 65101 =
=C2=A0 =C2=A01119 =C2=A0 =C2=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=
=A00 =C2=A0 =C2=A00 00:18:13 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div>=
<font face=3D"monospace, monospace">leaf-12(swp6) =C2=A0 4 65101 =C2=A0 =C2=
=A01122 =C2=A0 =C2=A01120 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=
=A0 =C2=A00 00:18:14 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font fa=
ce=3D"monospace, monospace">leaf-13(swp7) =C2=A0 4 65101 =C2=A0 =C2=A01110 =
=C2=A0 =C2=A01111 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A0=
0 00:18:12 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"mono=
space, monospace">leaf-14(swp8) =C2=A0 4 65101 =C2=A0 =C2=A01119 =C2=A0 =C2=
=A01119 =C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:13=
 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, mon=
ospace">leaf-21(swp9) =C2=A0 4 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =
=C2=A0 =C2=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =
=C2=A0 =C2=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">=
leaf-22(swp10) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=
=A0 =C2=A05</font></div><div><font face=3D"monospace, monospace">leaf-23(sw=
p11) =C2=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01134 =C2=A0 =C2=A0 =C2=A0=
 =C2=A00 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
5</font></div><div><font face=3D"monospace, monospace">leaf-24(swp12) =C2=
=A04 65102 =C2=A0 =C2=A01144 =C2=A0 =C2=A01135 =C2=A0 =C2=A0 =C2=A0 =C2=A00=
 =C2=A0 =C2=A00 =C2=A0 =C2=A00 00:18:28 =C2=A0 =C2=A0 =C2=A0 =C2=A05</font>=
</div><div><font face=3D"monospace, monospace"><br></font></div><div><font =
face=3D"monospace, monospace">Total number of neighbors 8</font></div><div>=
<font face=3D"monospace, monospace">spine-3#</font></div></div><div><br></d=
iv><div>It makes troubleshooting much easier.</div><div><br></div><div>Dani=
el</div><div><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">=
On Fri, May 15, 2015 at 9:58 PM,  <span dir=3D"ltr">&lt;<a>deleskie@gmail.c=
om</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,20=
4);border-left-style:solid;padding-left:1ex">Agree.. adding code for no rea=
l operational benefit<br>
<br>
Sent from my BlackBerry 10 smartphone on the Rogers network.<br>
=C2=A0 Original Message =C2=A0<br>
From: Randy Bush<br>
Sent: Friday, May 15, 2015 10:52 PM<br>
To: Daniel Walton<br>
Cc: idr wg; Dinesh Dutt<br>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00<br>
<span><br>
one more unneeded place for things to go wrong<br>
<br>
randy<br>
<br>
</span>_______________________________________________<br>
Idr mailing list<br>
<a>Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote></div><br></div></div></div>
</blockquote></div>
</div></div></blockquote></div><br></div></div>
</blockquote></div></div></div></div>
</blockquote></div><br></div></div></div>

--047d7bfea3f23af3b705162d85b9--


From nobody Sat May 16 01:06:35 2015
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From: "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
To: idr-bounces@ietf.org
Date: Sat, 16 May 2015 09:06:19 +0100
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Hello Daniel,

As unknown capability are ignored anyway, from a technical point, I see 
no problem with the capability presented.
It would be trivial to implement (only speaking for myself here).

In time of outage when quick debugging is the most important and when 
DNS may not be reachable ( been there, seen it ) having the “commonly 
used name” of the remote device does sound like a bad idea ( I could 
only remember so many IP ) but I appreciate it is an area where 
individual opinion will differ widely.

Thomas

http://exa.net.uk/about/contact-us
On 16 May 2015, at 2:26, Daniel Walton wrote:

> https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00
>
> Feedback is welcome. There is a "Sectino" typo in the intro, will 
> clean
> that up.
>
> Daniel
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr


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Subject: [Idr] I-D Action: draft-ietf-idr-bgp-nh-cost-02.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Inter-Domain Routing Working Group of the IETF.

        Title           : Carrying next-hop cost information in BGP
        Authors         : Ilya Varlashkin
                          Robert Raszuk
                          Keyur Patel
                          Manish Bhardwaj
                          Serpil Bayraktar
	Filename        : draft-ietf-idr-bgp-nh-cost-02.txt
	Pages           : 10
	Date            : 2015-05-16

Abstract:
   BGPLS provides a mechanism by which Link state and traffic
   engineering information can be collected from internal networks and
   shared with external network routers using BGP.  BGPLS defines a new
   Address Family to exchange this information using BGP.

   BGP Optimal Route Reflection (ORR) provides a mechanism for a
   centralized BGP Route Reflector to acheive requirements of a Hot
   Potato Routing as described in Section 11 of [RFC4456].  Optimal
   Route Reflection requires BGP ORR to overwrite the default IGP
   location placement of the route reflector; which is used for
   determining cost to the nexthop contained in the path.

   This draft augments BGPLS and defines a new extensions to exchange
   cost information to next-hops for the purpose of calculating best
   path from a peer perspective rather than local BGP speaker own
   perspective.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-nh-cost/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-idr-bgp-nh-cost-02

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-bgp-nh-cost-02


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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From: Robert Raszuk <robert@raszuk.net>
To: Dinesh Dutt <ddutt@cumulusnetworks.com>
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Cc: idr wg <idr@ietf.org>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Dinesh,

Q1 - how do you ping physical interface not a loopback
>
>
> In the DC, common practice I've seen is pinging node, not physical
> interface. The physical interface addresses aren't even advertised to be
> able to be reachable more than one hop away.
>

=E2=80=8BPing is just an example. Think about tool like BGP path trace ... =
do you
want to know the interface names packets are coming on from leaf to leaf or
not ? I was hoping with your extension you will be providing node name of
the form spine44_g10 (where eth10 is the interface =E2=80=8Bname).


Q2 - how about lookup on bgp rtr id instead LL address to get the name ?
>>
>
> I don't lookup LL address. Router ID is typically the loopback IP address
> in DC,
>

Perhaps you missed my point. If router id is loopback as you correctly
point out you already have it during BGP OPEN msg on any peering session so
just reverse DNS lookup on router_id will provide you with the name of the
node. Done with no bgp extensions needed.

If DNS is down as Thomas points out your names are useless for
troubleshooting anyway so you fall back to using old fashined IP addresses
in the show command :)

- - -

Now since we are on this topic we had an idea long long time back to carry
the name of the next hop in BGP (learned from ISIS extension which Henk
did) so not only peering will be known locally, but you can also see next
hops by node names rather then IPv6 like strings.

Originally it was added to IGP extensions for BGP discovery.

later the proposal was to carry this as new next hop descriptor attribute
so everynode in the AS can use it.

Now we are working on BGP remote next hop draft which could be used for
that as well. It will apply both to EBGP DC cases as well as for the normal
IBGP AS. In DC normally nh =3D peering address so naturally your case would
also be solved.

Using capability you only know the name of your immediate peer and that
sounds like a bit of limitation to me.

Propagating the name in the update as an attribute or new wide bgp
community (which I am happy to add new type for) seems to like a much
better option especially if other proposals already call for introduction
of beacon prefixes.

Best,
r.

--001a113d5b88c391fc05163068b1
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,he=
lvetica,sans-serif;font-size:small">Dinesh,</div><div class=3D"gmail_defaul=
t" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></d=
iv><div class=3D"gmail_extra"><div class=3D"gmail_quote"><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;bo=
rder-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">=
<div dir=3D"ltr"><div><div class=3D"gmail_extra"><div class=3D"gmail_quote"=
><span class=3D""><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px=
 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-=
left-style:solid;padding-left:1ex">Q1 - how do you ping physical=C2=A0inter=
face not a loopback=C2=A0</blockquote><div><br></div></span><div>In the DC,=
 common practice I&#39;ve seen is pinging node, not physical interface. The=
 physical interface addresses aren&#39;t even advertised to be able to be r=
eachable more than one hop away.<br></div></div></div></div></div></blockqu=
ote><div><br></div><div><div class=3D"gmail_default" style=3D"font-family:a=
rial,helvetica,sans-serif;font-size:small">=E2=80=8BPing is just an example=
. Think about tool like BGP path trace ... do you want to know the interfac=
e names packets are coming on from leaf to leaf or not ? I was hoping with =
your extension you will be providing node name of the form spine44_g10 (whe=
re eth10 is the interface =E2=80=8Bname).</div></div><div class=3D"gmail_de=
fault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br=
></div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sa=
ns-serif;font-size:small"><br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(20=
4,204,204);border-left-style:solid;padding-left:1ex"><div dir=3D"ltr"><div =
class=3D"gmail_extra"><div class=3D"gmail_quote"><span class=3D""><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-widt=
h:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-le=
ft:1ex"><div>Q2 - how about lookup on bgp rtr id instead LL address=C2=A0to=
 get the name ?</div></blockquote><div><br></div></span><div>I don&#39;t lo=
okup LL address. Router ID is typically the loopback IP address in DC, <br>=
</div></div></div></div></blockquote><div><br></div><div><div class=3D"gmai=
l_default" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"=
>Perhaps you missed my point. If router id is loopback as you correctly poi=
nt out you already have it during BGP OPEN msg on any peering session so ju=
st reverse DNS lookup on router_id will provide you with the name of the no=
de. Done with no bgp extensions needed.</div><div class=3D"gmail_default" s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><=
div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small">If DNS is down as Thomas points out your names are useles=
s for troubleshooting anyway so you fall back to using old fashined IP addr=
esses in the show command :)</div></div><div class=3D"gmail_default" style=
=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div =
class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;fon=
t-size:small">- - -=C2=A0</div><div class=3D"gmail_default" style=3D"font-f=
amily:arial,helvetica,sans-serif;font-size:small"><br></div><div class=3D"g=
mail_default" style=3D"font-family:arial,helvetica,sans-serif;font-size:sma=
ll">Now since we are on this topic we had an idea long long time back to ca=
rry the name of the next hop in BGP (learned from ISIS extension which Henk=
 did) so not only peering will be known locally, but you can also see next =
hops by node names rather then IPv6 like strings.=C2=A0</div><div class=3D"=
gmail_default" style=3D"font-family:arial,helvetica,sans-serif;font-size:sm=
all"><br></div><div class=3D"gmail_default" style=3D"font-family:arial,helv=
etica,sans-serif;font-size:small">Originally it was added to IGP extensions=
 for BGP discovery.=C2=A0</div><div class=3D"gmail_default" style=3D"font-f=
amily:arial,helvetica,sans-serif;font-size:small"><br></div><div class=3D"g=
mail_default" style=3D"font-family:arial,helvetica,sans-serif;font-size:sma=
ll">later the proposal was to carry this as new next hop descriptor attribu=
te so everynode in the AS can use it.=C2=A0</div><div class=3D"gmail_defaul=
t" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></d=
iv><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-s=
erif;font-size:small">Now we are working on BGP remote next hop draft which=
 could be used for that as well. It will apply both to EBGP DC cases as wel=
l as for the normal IBGP AS. In DC normally nh =3D peering address so natur=
ally your case would also be solved.=C2=A0</div><div class=3D"gmail_default=
" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></di=
v><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-se=
rif;font-size:small">Using capability you only know the name of your immedi=
ate peer and that sounds like a bit of limitation to me.=C2=A0</div><div cl=
ass=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;font-=
size:small"><br></div><div class=3D"gmail_default" style=3D"font-family:ari=
al,helvetica,sans-serif;font-size:small">Propagating the name in the update=
 as an attribute or new wide bgp community (which I am happy to add new typ=
e for) seems to like a much better option especially if other proposals alr=
eady call for introduction of beacon prefixes.=C2=A0<br></div><div class=3D=
"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;font-size:s=
mall"><br></div><div class=3D"gmail_default" style=3D"font-family:arial,hel=
vetica,sans-serif;font-size:small">Best,</div><div class=3D"gmail_default" =
style=3D"font-family:arial,helvetica,sans-serif;font-size:small">r.</div><d=
iv class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;=
font-size:small"><br></div></div></div></div>

--001a113d5b88c391fc05163068b1--


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From: "Rajiv Asati (rajiva)" <rajiva@cisco.com>
To: Dinesh Dutt <ddutt@cumulusnetworks.com>
Thread-Topic: [Idr] draft-walton-bgp-hostname-capability-00
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Cc: idr wg <idr@ietf.org>, Robert Raszuk <robert@raszuk.net>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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One minor point --

Q2 - how about lookup on bgp rtr id instead LL address to get the name ?

I don't lookup LL address. Router ID is typically the loopback IP address i=
n DC,

The above is true for dual-stack or single-stack IPv4 networks (loop back I=
Pv4 address usually is router ID), but not true for single-stack IPv6 netwo=
rks in which the router ID (4 bytes) would barely be related to the loop ba=
ck IPv6 address (128 bytes).

Cheers,
Rajiv

On May 16, 2015, at 3:01 AM, Dinesh Dutt <ddutt@cumulusnetworks.com<mailto:=
ddutt@cumulusnetworks.com>> wrote:

Hi Robert,

On Fri, May 15, 2015 at 11:27 PM, Robert Raszuk <robert@raszuk.net<mailto:r=
obert@raszuk.net>> wrote:
Hi Dinesh,

Q1 - how do you ping physical interface not a loopback

In the DC, common practice I've seen is pinging node, not physical interfac=
e. The physical interface addresses aren't even advertised to be able to be=
 reachable more than one hop away.


Q2 - how about lookup on bgp rtr id instead LL address to get the name ?

I don't lookup LL address. Router ID is typically the loopback IP address i=
n DC,

Dinesh

Cheers,
R.


On Saturday, May 16, 2015, Dinesh Dutt <ddutt@cumulusnetworks.com<mailto:dd=
utt@cumulusnetworks.com>> wrote:
Hi Robert,

On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk <robert@raszuk.net> wrote:
Hi Daniel & Dinesh,

I very much like the intention, but have a concern how it would simplify tr=
oubleshooting in practice ...

Imagine we exchange the names in new capability when session comes up so we=
 list it in summary output instead of link local address. But when you try =
to trace or ping that name (from pc or router) your local or global DNS wil=
l return not the LL address but most likely loopback so the results will be=
 rather of questionable value.

I'm confused. Why would we send a hostname in this capability that is diffe=
rent from the one assigned to loopback ? Within the DC at least, people don=
't advertise link addresses at all, only the loopback.  So, the hostname ex=
changed in the capability would be the same as the one returned by tracerou=
te/ping.

Dinesh


Would you not see this as a problem ? I hope you did not intended to just c=
over the cosmetic nature of few show commands which I must agree with other=
s is rather a legacy way to operate the network these days anyway ;)).



Cheers,
R.


On Saturday, May 16, 2015, Daniel Walton <dwalton@cumulusnetworks.com> wrot=
e:
Many of our customers use a Clos architecture and bgp peer to the IPv6 LL a=
ddress of every directly connected router.  To avoid configuring neighbor s=
tatements with LL addresses we support a "neighbor swpX interface" command =
("swpX" is the default notation for an interface name in cumulus linux).  W=
e then peer to the LL address on the other end of the swpX link (we only su=
pport this for point-to-point links).

When you run commands like "show ip bgp summary" you see a list of interfac=
e names instead of IP addresses. Typically if you are loopback peering you =
either become familiar with "10.0.0.1 is Chicago" because you see 10.0.0.1 =
in the 'show ip bgp summ' output of several different routers or you could =
use DNS to do a lookup on 10.0.0.1 and put the hostname in the output.  Whe=
n every box is peering to LL addresses though ("swpX" for short for us) you=
 can't easily tell who that peer is and you can't use DNS because they LL a=
ddresses

Before

leaf-11# show ip bgp summ
BGP router identifier 6.0.0.5, local AS number 65101
BGP table version 25
RIB entries 33, using 3960 bytes of memory
Peers 6, using 100 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/P=
fxRcd
swp1            4 65000     196     198        0    0    0 00:02:51        =
9
swp2            4 65000     195     200        0    0    0 00:02:51        =
9
swp3            4 65000     197     200        0    0    0 00:02:51        =
9
swp4            4 65000     198     200        0    0    0 00:02:51        =
9
swp5            4 65201     207     200        0    0    0 00:02:51        =
2
swp6            4 65202     210     201        0    0    0 00:02:52        =
2

Total number of neighbors 6
leaf-11#

spine-3# show ip bgp summ
BGP router identifier 6.0.0.15, local AS number 65000
BGP table version 19
RIB entries 33, using 3960 bytes of memory
Peers 8, using 134 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/P=
fxRcd
swp5            4 65101     675     675        0    0    0 00:10:49        =
5
swp6            4 65101     678     676        0    0    0 00:10:50        =
5
swp7            4 65101     667     668        0    0    0 00:10:48        =
5
swp8            4 65101     676     676        0    0    0 00:10:49        =
5
swp9            4 65102     701     692        0    0    0 00:11:04        =
5
swp10           4 65102     701     692        0    0    0 00:11:04        =
5
swp11           4 65102     701     691        0    0    0 00:11:04        =
5
swp12           4 65102     701     692        0    0    0 00:11:04        =
5

Total number of neighbors 8
spine-3#
spine-3#


After

leaf-11# show ip bgp summ
BGP router identifier 6.0.0.5, local AS number 65101
BGP table version 25
RIB entries 33, using 3960 bytes of memory
Peers 6, using 100 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/P=
fxRcd
spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07        =
9
spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07        =
9
spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07        =
9
spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07        =
9
tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07        =
2
tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08        =
2

Total number of neighbors 6
leaf-11#

spine-3# show ip bgp summ
BGP router identifier 6.0.0.15, local AS number 65000
BGP table version 19
RIB entries 33, using 3960 bytes of memory
Peers 8, using 134 KiB of memory
Peer groups 1, using 56 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/P=
fxRcd
leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13        =
5
leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14        =
5
leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12        =
5
leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13        =
5
leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28        =
5
leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28        =
5
leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28        =
5
leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28        =
5

Total number of neighbors 8
spine-3#

It makes troubleshooting much easier.

Daniel


On Fri, May 15, 2015 at 9:58 PM, <deleskie@gmail.com> wrote:
Agree.. adding code for no real operational benefit

Sent from my BlackBerry 10 smartphone on the Rogers network.
  Original Message
From: Randy Bush
Sent: Friday, May 15, 2015 10:52 PM
To: Daniel Walton
Cc: idr wg; Dinesh Dutt
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00

one more unneeded place for things to go wrong

randy

_______________________________________________
Idr mailing list
Idr@ietf.org
https://www.ietf.org/mailman/listinfo/idr



_______________________________________________
Idr mailing list
Idr@ietf.org<mailto:Idr@ietf.org>
https://www.ietf.org/mailman/listinfo/idr

--_000_2EE36D67B86145F2A8FA6BD835DD7AD1ciscocom_
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
</head>
<body dir=3D"auto">
<div>One minor point --</div>
<div><br>
</div>
<div>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<div class=3D"gmail_extra">
<div class=3D"gmail_quote">
<blockquote class=3D"gmail_quote" style=3D"margin: 0px 0px 0px 0.8ex; borde=
r-left-width: 1px; border-left-color: rgb(204, 204, 204); padding-left: 1ex=
;">
<font color=3D"#000000"><span style=3D"background-color: rgba(255, 255, 255=
, 0);">Q2 - how about lookup on bgp rtr id instead LL address&nbsp;to get t=
he name ?</span></font></blockquote>
<div><font color=3D"#000000"><span style=3D"background-color: rgba(255, 255=
, 255, 0);"><br>
</span></font></div>
<div><font color=3D"#000000"><span style=3D"background-color: rgba(255, 255=
, 255, 0);">I don't lookup LL address. Router ID is typically the loopback =
IP address in DC,&nbsp;</span></font><br>
</div>
</div>
</div>
</div>
</blockquote>
<div><br>
</div>
The above is true for dual-stack or single-stack IPv4 networks (loop back I=
Pv4 address usually is router ID), but not true for single-stack IPv6 netwo=
rks in which the router ID (4 bytes) would barely be related to the loop ba=
ck IPv6 address (128 bytes). &nbsp; &nbsp;<br>
<br>
Cheers,
<div>Rajiv</div>
</div>
<div><br>
On May 16, 2015, at 3:01 AM, Dinesh Dutt &lt;<a href=3D"mailto:ddutt@cumulu=
snetworks.com">ddutt@cumulusnetworks.com</a>&gt; wrote:<br>
<br>
</div>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">Hi Robert,<br>
<div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Fri, May 15, 2015 at 11:27 PM, Robert Raszuk =
<span dir=3D"ltr">
&lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank">robert@raszuk.ne=
t</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Hi Dinesh,
<div><br>
</div>
Q1 - how do you ping physical&nbsp;interface not a loopback&nbsp;</blockquo=
te>
<div><br>
</div>
<div>In the DC, common practice I've seen is pinging node, not physical int=
erface. The physical interface addresses aren't even advertised to be able =
to be reachable more than one hop away.<br>
&nbsp;<br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div><br>
</div>
<div>Q2 - how about lookup on bgp rtr id instead LL address&nbsp;to get the=
 name ?</div>
</blockquote>
<div><br>
</div>
<div>I don't lookup LL address. Router ID is typically the loopback IP addr=
ess in DC,
<br>
<br>
</div>
<div>Dinesh <br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div><br>
</div>
<div>Cheers,</div>
<div>R.
<div>
<div class=3D"h5"><br>
<div><br>
On Saturday, May 16, 2015, Dinesh Dutt &lt;<a href=3D"mailto:ddutt@cumulusn=
etworks.com" target=3D"_blank">ddutt@cumulusnetworks.com</a>&gt; wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div dir=3D"ltr">Hi Robert,<br>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Fri, May 15, 2015 at 11:01 PM, Robert Raszuk =
<span dir=3D"ltr">
&lt;<a>robert@raszuk.net</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Hi Daniel &amp; Dinesh,
<div><br>
</div>
<div>I very much like the intention, but have a concern how it would simpli=
fy troubleshooting in practice ...</div>
<div><br>
</div>
<div>Imagine we exchange the names in new capability when session comes up&=
nbsp;so we list it in summary output instead of link local address. But whe=
n you try to trace or ping that name (from pc or router)&nbsp;your local or=
 global DNS will return not the LL address
 but most likely loopback so the results will be rather of&nbsp;questionabl=
e value.</div>
</blockquote>
<div><br>
</div>
<div>I'm confused. Why would we send a hostname in this capability that is =
different from the one assigned to loopback ? Within the DC at least, peopl=
e don't advertise link addresses at all, only the loopback.&nbsp; So, the h=
ostname exchanged in the capability would
 be the same as the one returned by traceroute/ping.<br>
<br>
</div>
<div>Dinesh<br>
</div>
<div><br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div><br>
</div>
<div>Would you not see this as a problem ? I hope you did not intended to j=
ust cover the cosmetic nature of few show commands which I must agree with =
others is rather a&nbsp;legacy way to operate the network these days anyway=
 ;)).</div>
</blockquote>
<div><br>
&nbsp;</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div><br>
</div>
<div>Cheers,</div>
<div>R.</div>
<div>
<div>
<div><br>
</div>
<div><br>
On Saturday, May 16, 2015, Daniel Walton &lt;<a>dwalton@cumulusnetworks.com=
</a>&gt; wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div dir=3D"ltr">
<div>Many of our customers use a Clos architecture and bgp peer to the IPv6=
 LL address of every directly connected router.&nbsp; To avoid configuring =
neighbor statements with LL addresses we support a &quot;neighbor swpX inte=
rface&quot; command (&quot;swpX&quot; is the default notation
 for an interface name in cumulus linux).&nbsp; We then peer to the LL addr=
ess on the other end of the swpX link (we only support this for point-to-po=
int links). &nbsp;</div>
<div><br>
</div>
<div>When you run commands like &quot;show ip bgp summary&quot; you see a l=
ist of interface names instead of IP addresses. Typically if you are loopba=
ck peering you either become familiar with &quot;10.0.0.1 is Chicago&quot; =
because you see 10.0.0.1 in the 'show ip bgp summ' output
 of several different routers or you could use DNS to do a lookup on 10.0.0=
.1 and put the hostname in the output.&nbsp; When every box is peering to L=
L addresses though (&quot;swpX&quot; for short for us) you can't easily tel=
l who that peer is and you can't use DNS because
 they LL addresses</div>
<div><br>
</div>
<div><b>Before</b><br>
</div>
<div><br>
</div>
<div>
<div><font face=3D"monospace, monospace">leaf-11# show ip bgp summ</font></=
div>
<div><font face=3D"monospace, monospace">BGP router identifier 6.0.0.5, loc=
al AS number 65101</font></div>
<div><font face=3D"monospace, monospace">BGP table version 25</font></div>
<div><font face=3D"monospace, monospace">RIB entries 33, using 3960 bytes o=
f memory</font></div>
<div><font face=3D"monospace, monospace">Peers 6, using 100 KiB of memory</=
font></div>
<div><font face=3D"monospace, monospace">Peer groups 1, using 56 bytes of m=
emory</font></div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">Neighbor &nbsp; &nbsp; &nbsp; &nbs=
p;V &nbsp; &nbsp;AS MsgRcvd MsgSent &nbsp; TblVer &nbsp;InQ OutQ Up/Down &n=
bsp;State/PfxRcd</font></div>
<div><font face=3D"monospace, monospace">swp1 &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp;4 65000 &nbsp; &nbsp; 196 &nbsp; &nbsp; 198 &nbsp; &nbsp; &nbsp=
; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 00:02:51 &nbsp; &nbsp; &nbsp; &nbsp=
;9</font></div>
<div><font face=3D"monospace, monospace">swp2 &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp;4 65000 &nbsp; &nbsp; 195 &nbsp; &nbsp; 200 &nbsp; &nbsp; &nbsp=
; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 00:02:51 &nbsp; &nbsp; &nbsp; &nbsp=
;9</font></div>
<div><font face=3D"monospace, monospace">swp3 &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp;4 65000 &nbsp; &nbsp; 197 &nbsp; &nbsp; 200 &nbsp; &nbsp; &nbsp=
; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 00:02:51 &nbsp; &nbsp; &nbsp; &nbsp=
;9</font></div>
<div><font face=3D"monospace, monospace">swp4 &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp;4 65000 &nbsp; &nbsp; 198 &nbsp; &nbsp; 200 &nbsp; &nbsp; &nbsp=
; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 00:02:51 &nbsp; &nbsp; &nbsp; &nbsp=
;9</font></div>
<div><font face=3D"monospace, monospace">swp5 &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp;4 65201 &nbsp; &nbsp; 207 &nbsp; &nbsp; 200 &nbsp; &nbsp; &nbsp=
; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 00:02:51 &nbsp; &nbsp; &nbsp; &nbsp=
;2</font></div>
<div><font face=3D"monospace, monospace">swp6 &nbsp; &nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp;4 65202 &nbsp; &nbsp; 210 &nbsp; &nbsp; 201 &nbsp; &nbsp; &nbsp=
; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 00:02:52 &nbsp; &nbsp; &nbsp; &nbsp=
;2</font></div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">Total number of neighbors 6</font>=
</div>
<div><font face=3D"monospace, monospace">leaf-11#</font></div>
</div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">
<div>spine-3# show ip bgp summ</div>
<div>BGP router identifier 6.0.0.15, local AS number 65000</div>
<div>BGP table version 19</div>
<div>RIB entries 33, using 3960 bytes of memory</div>
<div>Peers 8, using 134 KiB of memory</div>
<div>Peer groups 1, using 56 bytes of memory</div>
<div><br>
</div>
<div>Neighbor &nbsp; &nbsp; &nbsp; &nbsp;V &nbsp; &nbsp;AS MsgRcvd MsgSent =
&nbsp; TblVer &nbsp;InQ OutQ Up/Down &nbsp;State/PfxRcd</div>
<div>swp5 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4 65101 &nbsp; &nbsp; 67=
5 &nbsp; &nbsp; 675 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbs=
p;0 00:10:49 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp6 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4 65101 &nbsp; &nbsp; 67=
8 &nbsp; &nbsp; 676 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbs=
p;0 00:10:50 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp7 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4 65101 &nbsp; &nbsp; 66=
7 &nbsp; &nbsp; 668 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbs=
p;0 00:10:48 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp8 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4 65101 &nbsp; &nbsp; 67=
6 &nbsp; &nbsp; 676 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbs=
p;0 00:10:49 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp9 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4 65102 &nbsp; &nbsp; 70=
1 &nbsp; &nbsp; 692 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbs=
p;0 00:11:04 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp10 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 4 65102 &nbsp; &nbsp; 701 &nb=
sp; &nbsp; 692 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 0=
0:11:04 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp11 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 4 65102 &nbsp; &nbsp; 701 &nb=
sp; &nbsp; 691 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 0=
0:11:04 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div>swp12 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 4 65102 &nbsp; &nbsp; 701 &nb=
sp; &nbsp; 692 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 0=
0:11:04 &nbsp; &nbsp; &nbsp; &nbsp;5</div>
<div><br>
</div>
<div>Total number of neighbors 8</div>
<div>spine-3#</div>
<div>spine-3#</div>
<div><br>
</div>
</font></div>
<div><br>
</div>
<div><b>After</b></div>
<div><br>
</div>
<div>
<div><font face=3D"monospace, monospace">leaf-11# show ip bgp summ</font></=
div>
<div><font face=3D"monospace, monospace">BGP router identifier 6.0.0.5, loc=
al AS number 65101</font></div>
<div><font face=3D"monospace, monospace">BGP table version 25</font></div>
<div><font face=3D"monospace, monospace">RIB entries 33, using 3960 bytes o=
f memory</font></div>
<div><font face=3D"monospace, monospace">Peers 6, using 100 KiB of memory</=
font></div>
<div><font face=3D"monospace, monospace">Peer groups 1, using 56 bytes of m=
emory</font></div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">Neighbor &nbsp; &nbsp; &nbsp; &nbs=
p;V &nbsp; &nbsp;AS MsgRcvd MsgSent &nbsp; TblVer &nbsp;InQ OutQ Up/Down &n=
bsp;State/PfxRcd</font></div>
<div><font face=3D"monospace, monospace">spine-1(swp1) &nbsp; 4 65000 &nbsp=
; &nbsp; 211 &nbsp; &nbsp; 213 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:03:07 &nbsp; &nbsp; &nbsp; &nbsp;9</font></div>
<div><font face=3D"monospace, monospace">spine-2(swp2) &nbsp; 4 65000 &nbsp=
; &nbsp; 210 &nbsp; &nbsp; 215 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:03:07 &nbsp; &nbsp; &nbsp; &nbsp;9</font></div>
<div><font face=3D"monospace, monospace">spine-3(swp3) &nbsp; 4 65000 &nbsp=
; &nbsp; 212 &nbsp; &nbsp; 215 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:03:07 &nbsp; &nbsp; &nbsp; &nbsp;9</font></div>
<div><font face=3D"monospace, monospace">spine-4(swp4) &nbsp; 4 65000 &nbsp=
; &nbsp; 213 &nbsp; &nbsp; 215 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:03:07 &nbsp; &nbsp; &nbsp; &nbsp;9</font></div>
<div><font face=3D"monospace, monospace">tor-11(swp5) &nbsp; &nbsp;4 65201 =
&nbsp; &nbsp; 222 &nbsp; &nbsp; 215 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nb=
sp;0 &nbsp; &nbsp;0 00:03:07 &nbsp; &nbsp; &nbsp; &nbsp;2</font></div>
<div><font face=3D"monospace, monospace">tor-12(swp6) &nbsp; &nbsp;4 65202 =
&nbsp; &nbsp; 225 &nbsp; &nbsp; 216 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nb=
sp;0 &nbsp; &nbsp;0 00:03:08 &nbsp; &nbsp; &nbsp; &nbsp;2</font></div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">Total number of neighbors 6</font>=
</div>
<div><font face=3D"monospace, monospace">leaf-11#</font></div>
</div>
<div><br>
</div>
<div>
<div><font face=3D"monospace, monospace">spine-3# show ip bgp summ</font></=
div>
<div><font face=3D"monospace, monospace">BGP router identifier 6.0.0.15, lo=
cal AS number 65000</font></div>
<div><font face=3D"monospace, monospace">BGP table version 19</font></div>
<div><font face=3D"monospace, monospace">RIB entries 33, using 3960 bytes o=
f memory</font></div>
<div><font face=3D"monospace, monospace">Peers 8, using 134 KiB of memory</=
font></div>
<div><font face=3D"monospace, monospace">Peer groups 1, using 56 bytes of m=
emory</font></div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">Neighbor &nbsp; &nbsp; &nbsp; &nbs=
p;V &nbsp; &nbsp;AS MsgRcvd MsgSent &nbsp; TblVer &nbsp;InQ OutQ Up/Down &n=
bsp;State/PfxRcd</font></div>
<div><font face=3D"monospace, monospace">leaf-11(swp5) &nbsp; 4 65101 &nbsp=
; &nbsp;1119 &nbsp; &nbsp;1119 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:13 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-12(swp6) &nbsp; 4 65101 &nbsp=
; &nbsp;1122 &nbsp; &nbsp;1120 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:14 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-13(swp7) &nbsp; 4 65101 &nbsp=
; &nbsp;1110 &nbsp; &nbsp;1111 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:12 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-14(swp8) &nbsp; 4 65101 &nbsp=
; &nbsp;1119 &nbsp; &nbsp;1119 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:13 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-21(swp9) &nbsp; 4 65102 &nbsp=
; &nbsp;1144 &nbsp; &nbsp;1135 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:28 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-22(swp10) &nbsp;4 65102 &nbsp=
; &nbsp;1144 &nbsp; &nbsp;1135 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:28 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-23(swp11) &nbsp;4 65102 &nbsp=
; &nbsp;1144 &nbsp; &nbsp;1134 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:28 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace">leaf-24(swp12) &nbsp;4 65102 &nbsp=
; &nbsp;1144 &nbsp; &nbsp;1135 &nbsp; &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp;0 =
&nbsp; &nbsp;0 00:18:28 &nbsp; &nbsp; &nbsp; &nbsp;5</font></div>
<div><font face=3D"monospace, monospace"><br>
</font></div>
<div><font face=3D"monospace, monospace">Total number of neighbors 8</font>=
</div>
<div><font face=3D"monospace, monospace">spine-3#</font></div>
</div>
<div><br>
</div>
<div>It makes troubleshooting much easier.</div>
<div><br>
</div>
<div>Daniel</div>
<div><br>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Fri, May 15, 2015 at 9:58 PM, <span dir=3D"lt=
r">&lt;<a>deleskie@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;p=
adding-left:1ex">
Agree.. adding code for no real operational benefit<br>
<br>
Sent from my BlackBerry 10 smartphone on the Rogers network.<br>
&nbsp; Original Message &nbsp;<br>
From: Randy Bush<br>
Sent: Friday, May 15, 2015 10:52 PM<br>
To: Daniel Walton<br>
Cc: idr wg; Dinesh Dutt<br>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00<br>
<span><br>
one more unneeded place for things to go wrong<br>
<br>
randy<br>
<br>
</span>_______________________________________________<br>
Idr mailing list<br>
<a>Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</div>
</blockquote>
<blockquote type=3D"cite">
<div><span>_______________________________________________</span><br>
<span>Idr mailing list</span><br>
<span><a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a></span><br>
<span><a href=3D"https://www.ietf.org/mailman/listinfo/idr">https://www.iet=
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From: "Rajiv Asati (rajiva)" <rajiva@cisco.com>
To: Robert Raszuk <robert@raszuk.net>
Thread-Topic: [Idr] draft-walton-bgp-hostname-capability-00
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From: Daniel Walton <dwalton@cumulusnetworks.com>
To: Robert Raszuk <robert@raszuk.net>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sat, May 16, 2015 at 6:27 AM, Robert Raszuk <robert@raszuk.net> wrote:

> Dinesh,
>
> Q1 - how do you ping physical interface not a loopback
>>
>>
>> In the DC, common practice I've seen is pinging node, not physical
>> interface. The physical interface addresses aren't even advertised to be
>> able to be reachable more than one hop away.
>>
>
> =E2=80=8BPing is just an example. Think about tool like BGP path trace ..=
. do you
> want to know the interface names packets are coming on from leaf to leaf =
or
> not ? I was hoping with your extension you will be providing node name of
> the form spine44_g10 (where eth10 is the interface =E2=80=8Bname).
>

No, we just want to know the hostname of our peer so that the user has more
context to work with other than an interface name. It is as simple as
displaying/using that hostname in show commands, debug output, clear
commands, etc.  Using a simple capability allows this to work if DNS is
down or not configured (lab environment...granted this scenario is low
priority) or if you have the scenario that Rajiv pointed out.



> Q2 - how about lookup on bgp rtr id instead LL address to get the name ?
>>>
>>
>> I don't lookup LL address. Router ID is typically the loopback IP addres=
s
>> in DC,
>>
>
> Perhaps you missed my point. If router id is loopback as you correctly
> point out you already have it during BGP OPEN msg on any peering session =
so
> just reverse DNS lookup on router_id will provide you with the name of th=
e
> node. Done with no bgp extensions needed.
>
> If DNS is down as Thomas points out your names are useless for
> troubleshooting anyway so you fall back to using old fashined IP addresse=
s
> in the show command :)
>

If DNS is down how does that make knowing the hostname of a LL BGP peer
useless?



>
> - - -
>
> Now since we are on this topic we had an idea long long time back to carr=
y
> the name of the next hop in BGP (learned from ISIS extension which Henk
> did) so not only peering will be known locally, but you can also see next
> hops by node names rather then IPv6 like strings.
>
> Originally it was added to IGP extensions for BGP discovery.
>
> later the proposal was to carry this as new next hop descriptor attribute
> so everynode in the AS can use it.
>
> Now we are working on BGP remote next hop draft which could be used for
> that as well. It will apply both to EBGP DC cases as well as for the norm=
al
> IBGP AS. In DC normally nh =3D peering address so naturally your case wou=
ld
> also be solved.
>
> Using capability you only know the name of your immediate peer and that
> sounds like a bit of limitation to me.
>
> Propagating the name in the update as an attribute or new wide bgp
> community (which I am happy to add new type for) seems to like a much
> better option especially if other proposals already call for introduction
> of beacon prefixes.
>
>
This sounds far more heavy handed and would be solving a problem that we
are not attempting to solve :) I just need to know the hostnames of my
peers.

Daniel

--047d7bdc11be71f443051631c3f4
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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sat, May 16, 2015 at 6:27 AM, Robert Raszuk <span dir=3D"ltr">&lt;<a=
 href=3D"mailto:robert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&=
gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 =
0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small">Dinesh,</di=
v><div style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br=
></div><div class=3D"gmail_extra"><div class=3D"gmail_quote"><span class=3D=
""><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:soli=
d;padding-left:1ex"><div dir=3D"ltr"><div><div class=3D"gmail_extra"><div c=
lass=3D"gmail_quote"><span><blockquote class=3D"gmail_quote" style=3D"margi=
n:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204=
);border-left-style:solid;padding-left:1ex">Q1 - how do you ping physical=
=C2=A0interface not a loopback=C2=A0</blockquote><div><br></div></span><div=
>In the DC, common practice I&#39;ve seen is pinging node, not physical int=
erface. The physical interface addresses aren&#39;t even advertised to be a=
ble to be reachable more than one hop away.<br></div></div></div></div></di=
v></blockquote><div><br></div></span><div><div style=3D"font-family:arial,h=
elvetica,sans-serif;font-size:small">=E2=80=8BPing is just an example. Thin=
k about tool like BGP path trace ... do you want to know the interface name=
s packets are coming on from leaf to leaf or not ? I was hoping with your e=
xtension you will be providing node name of the form spine44_g10 (where eth=
10 is the interface =E2=80=8Bname).</div></div></div></div></div></blockquo=
te><div><br></div><div>No, we just want to know the hostname of our peer so=
 that the user has more context to work with other than an interface name. =
It is as simple as displaying/using that hostname in show commands, debug o=
utput, clear commands, etc.=C2=A0 Using a simple capability allows this to =
work if DNS is down or not configured (lab environment...granted this scena=
rio is low priority) or if you have the scenario that Rajiv pointed out.</d=
iv><div><br></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=
=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><span class=
=3D""><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:s=
olid;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra"><div cla=
ss=3D"gmail_quote"><span><blockquote class=3D"gmail_quote" style=3D"margin:=
0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);=
border-left-style:solid;padding-left:1ex"><div>Q2 - how about lookup on bgp=
 rtr id instead LL address=C2=A0to get the name ?</div></blockquote><div><b=
r></div></span><div>I don&#39;t lookup LL address. Router ID is typically t=
he loopback IP address in DC, <br></div></div></div></div></blockquote><div=
><br></div></span><div><div style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small">Perhaps you missed my point. If router id is loopback as =
you correctly point out you already have it during BGP OPEN msg on any peer=
ing session so just reverse DNS lookup on router_id will provide you with t=
he name of the node. Done with no bgp extensions needed.</div><div style=3D=
"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div sty=
le=3D"font-family:arial,helvetica,sans-serif;font-size:small">If DNS is dow=
n as Thomas points out your names are useless for troubleshooting anyway so=
 you fall back to using old fashined IP addresses in the show command :)</d=
iv></div></div></div></div></blockquote><div><br></div><div>If DNS is down =
how does that make knowing the hostname of a LL BGP peer useless?</div><div=
><br></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"=
><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div style=3D"font-f=
amily:arial,helvetica,sans-serif;font-size:small"><br></div><div style=3D"f=
ont-family:arial,helvetica,sans-serif;font-size:small">- - -=C2=A0</div><di=
v style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></di=
v><div style=3D"font-family:arial,helvetica,sans-serif;font-size:small">Now=
 since we are on this topic we had an idea long long time back to carry the=
 name of the next hop in BGP (learned from ISIS extension which Henk did) s=
o not only peering will be known locally, but you can also see next hops by=
 node names rather then IPv6 like strings.=C2=A0</div><div style=3D"font-fa=
mily:arial,helvetica,sans-serif;font-size:small"><br></div><div style=3D"fo=
nt-family:arial,helvetica,sans-serif;font-size:small">Originally it was add=
ed to IGP extensions for BGP discovery.=C2=A0</div><div style=3D"font-famil=
y:arial,helvetica,sans-serif;font-size:small"><br></div><div style=3D"font-=
family:arial,helvetica,sans-serif;font-size:small">later the proposal was t=
o carry this as new next hop descriptor attribute so everynode in the AS ca=
n use it.=C2=A0</div><div style=3D"font-family:arial,helvetica,sans-serif;f=
ont-size:small"><br></div><div style=3D"font-family:arial,helvetica,sans-se=
rif;font-size:small">Now we are working on BGP remote next hop draft which =
could be used for that as well. It will apply both to EBGP DC cases as well=
 as for the normal IBGP AS. In DC normally nh =3D peering address so natura=
lly your case would also be solved.=C2=A0</div><div style=3D"font-family:ar=
ial,helvetica,sans-serif;font-size:small"><br></div><div style=3D"font-fami=
ly:arial,helvetica,sans-serif;font-size:small">Using capability you only kn=
ow the name of your immediate peer and that sounds like a bit of limitation=
 to me.=C2=A0</div><div style=3D"font-family:arial,helvetica,sans-serif;fon=
t-size:small"><br></div><div style=3D"font-family:arial,helvetica,sans-seri=
f;font-size:small">Propagating the name in the update as an attribute or ne=
w wide bgp community (which I am happy to add new type for) seems to like a=
 much better option especially if other proposals already call for introduc=
tion of beacon prefixes.=C2=A0<br></div><div style=3D"font-family:arial,hel=
vetica,sans-serif;font-size:small"><br></div></div></div></div></blockquote=
><div><br></div><div>This sounds far more heavy handed and would be solving=
 a problem that we are not attempting to solve :) I just need to know the h=
ostnames of my peers.</div><div><br></div><div>Daniel</div><div><br></div><=
div>=C2=A0</div></div></div></div>

--047d7bdc11be71f443051631c3f4--


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To: Daniel Walton <dwalton@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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=E2=80=8BHi Daniel,=E2=80=8B



> If DNS is down how does that make knowing the hostname of a LL BGP peer
> useless?
>

=E2=80=8BIt was not clear from the draft that you would use those to resolv=
e names
also locally (say via temporary caching into hosts file) when learned by
BGP.

I think while the extension you are proposing is indeed minor I would
personnaly see this being solved in general v6 case not just for BGP as
Rajiv mentioned.

Btw are you not running LLDP already on the interfaces ? If so the peer
name is already there. If not adding OpenLLDP (http://open-lldp.org/)
should be a mater of minutes :)


> This sounds far more heavy handed and would be solving a problem that
> we are not attempting to solve :) I just need to know the hostnames of my
> peers.

But it also solves your problem automagically - that is why I have
mentioned it here for consideration of the group.


Cheers,
R.

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div=
><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-ser=
if;font-size:small">=E2=80=8BHi Daniel,=E2=80=8B</div><br></div><div>=C2=A0=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:s=
olid;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra"><div cla=
ss=3D"gmail_quote"><div>If DNS is down how does that make knowing the hostn=
ame of a LL BGP peer useless?</div></div></div></div></blockquote><div><br>=
</div><div><div class=3D"gmail_default" style=3D"font-family:arial,helvetic=
a,sans-serif;font-size:small">=E2=80=8BIt was not clear from the draft that=
 you would use those to resolve names also locally (say via temporary cachi=
ng into hosts file) when learned by BGP.=C2=A0</div><div class=3D"gmail_def=
ault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br>=
</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,san=
s-serif;font-size:small">I think while the extension you are proposing is i=
ndeed minor I would personnaly see this being solved in general v6 case not=
 just for BGP as Rajiv mentioned.=C2=A0<br></div><div class=3D"gmail_defaul=
t" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></d=
iv><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-s=
erif;font-size:small">Btw are you not running LLDP already on the interface=
s ? If so the peer name is already there. If not adding OpenLLDP (<a href=
=3D"http://open-lldp.org/">http://open-lldp.org/</a>) should be a mater of =
minutes :)</div><div class=3D"gmail_default" style=3D"font-family:arial,hel=
vetica,sans-serif;font-size:small"><br></div><div class=3D"gmail_default" s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><=
div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small"><span style=3D"font-family:arial,sans-serif;font-size:12.=
8000001907349px">&gt; This sounds far more heavy handed and would be solvin=
g a problem that=C2=A0</span></div><div class=3D"gmail_default" style=3D"fo=
nt-family:arial,helvetica,sans-serif;font-size:small"><span style=3D"font-f=
amily:arial,sans-serif;font-size:12.8000001907349px">&gt; we are not attemp=
ting to solve :) I just need to know the hostnames of my=C2=A0</span></div>=
<div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-seri=
f;font-size:small"><span style=3D"font-family:arial,sans-serif;font-size:12=
.8000001907349px">&gt; peers.</span><br></div></div><div class=3D"gmail_def=
ault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><spa=
n style=3D"font-family:arial,sans-serif;font-size:12.8000001907349px"><br><=
/span></div><div class=3D"gmail_default" style=3D"font-family:arial,helveti=
ca,sans-serif;font-size:small"><span style=3D"font-family:arial,sans-serif;=
font-size:12.8000001907349px">But it also solves your problem automagically=
 - that is why I have mentioned it here for consideration of the group.=C2=
=A0</span></div><div class=3D"gmail_default" style=3D"font-family:arial,hel=
vetica,sans-serif;font-size:small"><span style=3D"font-family:arial,sans-se=
rif;font-size:12.8000001907349px"><br></span></div><div class=3D"gmail_defa=
ult" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><span=
 style=3D"font-family:arial,sans-serif;font-size:12.8000001907349px"><br></=
span></div><div class=3D"gmail_default" style=3D"font-family:arial,helvetic=
a,sans-serif;font-size:small"><span style=3D"font-family:arial,sans-serif;f=
ont-size:12.8000001907349px">Cheers,<br>R.</span></div><div class=3D"gmail_=
default" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><=
span style=3D"font-family:arial,sans-serif;font-size:12.8000001907349px"><b=
r></span></div></div></div></div>

--047d7b676d521e6a360516329628--


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From: "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
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Date: Sat, 16 May 2015 16:59:09 +0100
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> If DNS is down as Thomas points out your names are useless for 
> troubleshooting anyway so you fall back to using old fashined IP 
> addresses in the show command :)
>
> If DNS is down how does that make knowing the hostname of a LL BGP 
> peer useless?

I do not know any of the directly connected IP of most of our equipments 
but I know all our router names and they include some form of encoding 
of the hw type and location. Therefore if not vital this information is 
useful.

Also more than once I have seen process failure where a equipment IP is 
changed but where DNS information is not and consequently stale. This 
will help with this case.

I would rather see this totally harmless draft (as vendors can decide to 
ignore it without consequences) progress than seeing Cumulus assigning a 
capability number for it and later find that we have like multisession 
two different code for the same feature :p

Thomas


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Am 16.05.2015 um 11:59 schrieb Thomas Mangin <thomas.mangin@exa-networks.co.=
uk>:
>=20
> I would rather see this totally harmless draft (as vendors can decide to i=
gnore it without consequences) progress than seeing Cumulus assigning a capa=
bility number for it and later find that we have like multisession two diffe=
rent code for the same feature :p

Or just keep track of your peering info in a database ... With contact info,=
 business relationship, etc.  this is not a bgp problem, IMO.  Its a CRM and=
 NMS problem.=20=


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To: "Rajiv Asati (rajiva)" <rajiva@cisco.com>, Robert Raszuk <robert@raszuk.net>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On 16/05/2015 12:54, Rajiv Asati (rajiva) wrote:
> Perhaps, IPv6 ND (*) is better suited to carry the host names. The reason
> is that IPv6 ND is mandatory for every IPv6 node, hence the lowest common
> denominator. 

please no.  Major layering violation.

Nick



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From: Daniel Walton <dwalton@cumulusnetworks.com>
To: Robert Raszuk <robert@raszuk.net>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sat, May 16, 2015 at 9:03 AM, Robert Raszuk <robert@raszuk.net> wrote:

> =E2=80=8BHi Daniel,=E2=80=8B
>
>
>
>> If DNS is down how does that make knowing the hostname of a LL BGP peer
>> useless?
>>
>
> =E2=80=8BIt was not clear from the draft that you would use those to reso=
lve names
> also locally (say via temporary caching into hosts file) when learned by
> BGP.
>

Ack, we'll add some text that gives some examples of how/why an
implementation might use the hostname data.


I think while the extension you are proposing is indeed minor I would
> personnaly see this being solved in general v6 case not just for BGP as
> Rajiv mentioned.
>
> Btw are you not running LLDP already on the interfaces ? If so the peer
> name is already there. If not adding OpenLLDP (http://open-lldp.org/)
> should be a mater of minutes :)
>
>
yep, we have LLDP :)  We did consider using LLDP initially but there are
some situations where it doesn't work:

   - LLDP is not enabled.  This would be uncommon within a data center but
   I have worked with customers before who turn off LLDP on all customer
   facing links.
   - If you want to peer to multiple peers on a single L2 segment you are
   only going to see the L2 switch as a LLDP peer and not all of the L3 box=
es
   that you are BGP peering with.  For us we only support the "neighbor swp=
X
   interface" syntax for p2p links but that might change someday and a
   customer could always configure multiple neighbors on that interface by
   specifying "neighbor fe80::...... remote-as X".

Daniel

--089e0115f644fe6a680516376f15
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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sat, May 16, 2015 at 9:03 AM, Robert Raszuk <span dir=3D"ltr">&lt;<a=
 href=3D"mailto:robert@raszuk.net" target=3D"_blank">robert@raszuk.net</a>&=
gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 =
0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div c=
lass=3D"gmail_extra"><div class=3D"gmail_quote"><div><div style=3D"font-fam=
ily:arial,helvetica,sans-serif;font-size:small">=E2=80=8BHi Daniel,=E2=80=
=8B</div><br></div><span class=3D""><div>=C2=A0</div><blockquote class=3D"g=
mail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-=
left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div =
dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div>If D=
NS is down how does that make knowing the hostname of a LL BGP peer useless=
?</div></div></div></div></blockquote><div><br></div></span><div><div style=
=3D"font-family:arial,helvetica,sans-serif;font-size:small">=E2=80=8BIt was=
 not clear from the draft that you would use those to resolve names also lo=
cally (say via temporary caching into hosts file) when learned by BGP.=C2=
=A0</div></div></div></div></div></blockquote><div><br></div><div>Ack, we&#=
39;ll add some text that gives some examples of how/why an implementation m=
ight use the hostname data.</div><div><br></div><div><br></div><blockquote =
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid=
;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra"><div class=
=3D"gmail_quote"><div><div style=3D"font-family:arial,helvetica,sans-serif;=
font-size:small"></div><div style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small">I think while the extension you are proposing is indeed m=
inor I would personnaly see this being solved in general v6 case not just f=
or BGP as Rajiv mentioned.=C2=A0<br></div><div style=3D"font-family:arial,h=
elvetica,sans-serif;font-size:small"><br></div><div style=3D"font-family:ar=
ial,helvetica,sans-serif;font-size:small">Btw are you not running LLDP alre=
ady on the interfaces ? If so the peer name is already there. If not adding=
 OpenLLDP (<a href=3D"http://open-lldp.org/" target=3D"_blank">http://open-=
lldp.org/</a>) should be a mater of minutes :)</div><span class=3D""><div s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><=
/span></div></div></div></div></blockquote><div><br></div><div>yep, we have=
 LLDP :) =C2=A0We did consider using LLDP initially but there are some situ=
ations where it doesn&#39;t work:</div><div><ul><li>LLDP is not enabled.=C2=
=A0 This would be uncommon within a data center but I have worked with cust=
omers before who turn off LLDP on all customer facing links.</li><li>If you=
 want to peer to multiple peers on a single L2 segment you are only going t=
o see the L2 switch as a LLDP peer and not all of the L3 boxes that you are=
 BGP peering with.=C2=A0 For us we only support the &quot;neighbor swpX int=
erface&quot; syntax for p2p links but that might change someday and a custo=
mer could always configure multiple neighbors on that interface by specifyi=
ng &quot;neighbor fe80::...... remote-as X&quot;.</li></ul></div><div>Danie=
l</div><div>=C2=A0</div></div></div></div>

--089e0115f644fe6a680516376f15--


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Date: Sat, 16 May 2015 20:04:24 +0100
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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>> I would rather see this totally harmless draft (as vendors can decide =

>> to ignore it without consequences) progress than seeing Cumulus =

>> assigning a capability number for it and later find that we have like =

>> multisession two different code for the same feature :p
>
> Or just keep track of your peering info in a database ... With contact =

> info, business relationship, etc.  this is not a bgp problem, IMO.  =

> Its a CRM and NMS problem.

We will clearly not agree.

As we believe in =E2=80=9Cworking code and rough consensus=E2=80=9D, we n=
ow have the =

first half.
https://github.com/Exa-Networks/exabgp/commit/2641669f0bf6f34e3639bcdc36a=
940c381c89548

I will let people decide about the second half.

Thomas


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Hi Thomas,

I think you have captured our intent well.

On Sat, May 16, 2015 at 12:04 PM, Thomas Mangin <
thomas.mangin@exa-networks.co.uk> wrote:

> I would rather see this totally harmless draft (as vendors can decide to
>>> ignore it without consequences) progress than seeing Cumulus assigning =
a
>>> capability number for it and later find that we have like multisession =
two
>>> different code for the same feature :p
>>>
>>
>> Or just keep track of your peering info in a database ... With contact
>> info, business relationship, etc.  this is not a bgp problem, IMO.  Its =
a
>> CRM and NMS problem.
>>
>
> We will clearly not agree.
>
> As we believe in =E2=80=9Cworking code and rough consensus=E2=80=9D, we n=
ow have the first
> half.
>
> https://github.com/Exa-Networks/exabgp/commit/2641669f0bf6f34e3639bcdc36a=
940c381c89548
>

In the same spirit, we had added a link to the Quagga implementation that
we have in the draft. May we add a link to your implementation as well ?

Dinesh

>
> I will let people decide about the second half.
>
> Thomas
>
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
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<div dir=3D"ltr"><div>Hi Thomas,<br><br></div>I think you have captured our=
 intent well. <br><div><div><div class=3D"gmail_extra"><br><div class=3D"gm=
ail_quote">On Sat, May 16, 2015 at 12:04 PM, Thomas Mangin <span dir=3D"ltr=
">&lt;<a href=3D"mailto:thomas.mangin@exa-networks.co.uk" target=3D"_blank"=
>thomas.mangin@exa-networks.co.uk</a>&gt;</span> wrote:<br><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex"><span class=3D""><blockquote class=3D"gmail_quote" style=3D"=
margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote =
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid=
;padding-left:1ex">
I would rather see this totally harmless draft (as vendors can decide to ig=
nore it without consequences) progress than seeing Cumulus assigning a capa=
bility number for it and later find that we have like multisession two diff=
erent code for the same feature :p<br>
</blockquote>
<br>
Or just keep track of your peering info in a database ... With contact info=
, business relationship, etc.=C2=A0 this is not a bgp problem, IMO.=C2=A0 I=
ts a CRM and NMS problem.<br>
</blockquote>
<br></span>
We will clearly not agree.<br>
<br>
As we believe in =E2=80=9Cworking code and rough consensus=E2=80=9D, we now=
 have the first half.<br>
<a href=3D"https://github.com/Exa-Networks/exabgp/commit/2641669f0bf6f34e36=
39bcdc36a940c381c89548" target=3D"_blank">https://github.com/Exa-Networks/e=
xabgp/commit/2641669f0bf6f34e3639bcdc36a940c381c89548</a><br></blockquote><=
div><br></div><div>In the same spirit, we had added a link to the Quagga im=
plementation that we have in the draft. May we add a link to your implement=
ation as well ?<br><br></div><div>Dinesh <br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex">
<br>
I will let people decide about the second half.<span class=3D"HOEnZb"><font=
 color=3D"#888888"><br>
<br>
Thomas</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org" target=3D"_blank">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</div></div></blockquote></div><br></div></div></div></div>

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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Sat, 16 May 2015 12:19:07 -0700
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To: Nick Hilliard <nick@foobar.org>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sat, May 16, 2015 at 10:45 AM, Nick Hilliard <nick@foobar.org> wrote:

> On 16/05/2015 12:54, Rajiv Asati (rajiva) wrote:
> > Perhaps, IPv6 ND (*) is better suited to carry the host names. The reason
> > is that IPv6 ND is mandatory for every IPv6 node, hence the lowest common
> > denominator.
>
> please no.  Major layering violation.
>

Ack. There are other reasons too such as working with IPv4 peering, and
iBGP peering which is not always one-hop away.

Dinesh

>
> Nick
>
>
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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sat, May 16, 2015 at 10:45 AM, Nick Hilliard <span dir=3D"ltr">&lt;<=
a href=3D"mailto:nick@foobar.org" target=3D"_blank">nick@foobar.org</a>&gt;=
</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=3D"">On 16/05/=
2015 12:54, Rajiv Asati (rajiva) wrote:<br>
&gt; Perhaps, IPv6 ND (*) is better suited to carry the host names. The rea=
son<br>
&gt; is that IPv6 ND is mandatory for every IPv6 node, hence the lowest com=
mon<br>
&gt; denominator.<br>
<br>
</span>please no.=C2=A0 Major layering violation.<br></blockquote><div><br>=
</div><div>Ack. There are other reasons too such as working with IPv4 peeri=
ng, and iBGP peering which is not always one-hop away.<br><br></div><div>Di=
nesh<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
Nick<br>
</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
_______________________________________________<br>
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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Sat, 16 May 2015 12:20:34 -0700
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To: Daniel Walton <dwalton@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Also add to this list, iBGP peering, which may not be one hop away. Within
the DC, people are deploying BGP-based controllers.

Dinesh

On Sat, May 16, 2015 at 11:50 AM, Daniel Walton <dwalton@cumulusnetworks.co=
m
> wrote:

>
>
> On Sat, May 16, 2015 at 9:03 AM, Robert Raszuk <robert@raszuk.net> wrote:
>
>> =E2=80=8BHi Daniel,=E2=80=8B
>>
>>
>>
>>> If DNS is down how does that make knowing the hostname of a LL BGP peer
>>> useless?
>>>
>>
>> =E2=80=8BIt was not clear from the draft that you would use those to res=
olve
>> names also locally (say via temporary caching into hosts file) when lear=
ned
>> by BGP.
>>
>
> Ack, we'll add some text that gives some examples of how/why an
> implementation might use the hostname data.
>
>
> I think while the extension you are proposing is indeed minor I would
>> personnaly see this being solved in general v6 case not just for BGP as
>> Rajiv mentioned.
>>
>> Btw are you not running LLDP already on the interfaces ? If so the peer
>> name is already there. If not adding OpenLLDP (http://open-lldp.org/)
>> should be a mater of minutes :)
>>
>>
> yep, we have LLDP :)  We did consider using LLDP initially but there are
> some situations where it doesn't work:
>
>    - LLDP is not enabled.  This would be uncommon within a data center
>    but I have worked with customers before who turn off LLDP on all custo=
mer
>    facing links.
>    - If you want to peer to multiple peers on a single L2 segment you are
>    only going to see the L2 switch as a LLDP peer and not all of the L3 b=
oxes
>    that you are BGP peering with.  For us we only support the "neighbor s=
wpX
>    interface" syntax for p2p links but that might change someday and a
>    customer could always configure multiple neighbors on that interface b=
y
>    specifying "neighbor fe80::...... remote-as X".
>
> Daniel
>
>

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<div dir=3D"ltr"><div>Also add to this list, iBGP peering, which may not be=
 one hop away. Within the DC, people are deploying BGP-based controllers.<b=
r><br></div>Dinesh<br></div><div class=3D"gmail_extra"><br><div class=3D"gm=
ail_quote">On Sat, May 16, 2015 at 11:50 AM, Daniel Walton <span dir=3D"ltr=
">&lt;<a href=3D"mailto:dwalton@cumulusnetworks.com" target=3D"_blank">dwal=
ton@cumulusnetworks.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail=
_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:=
1ex"><div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmai=
l_quote"><span class=3D"">On Sat, May 16, 2015 at 9:03 AM, Robert Raszuk <s=
pan dir=3D"ltr">&lt;<a href=3D"mailto:robert@raszuk.net" target=3D"_blank">=
robert@raszuk.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><=
div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div>=
<div style=3D"font-family:arial,helvetica,sans-serif;font-size:small">=E2=
=80=8BHi Daniel,=E2=80=8B</div><br></div><span><div>=C2=A0</div><blockquote=
 class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:=
1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left=
:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote=
"><div>If DNS is down how does that make knowing the hostname of a LL BGP p=
eer useless?</div></div></div></div></blockquote><div><br></div></span><div=
><div style=3D"font-family:arial,helvetica,sans-serif;font-size:small">=E2=
=80=8BIt was not clear from the draft that you would use those to resolve n=
ames also locally (say via temporary caching into hosts file) when learned =
by BGP.=C2=A0</div></div></div></div></div></blockquote><div><br></div></sp=
an><div>Ack, we&#39;ll add some text that gives some examples of how/why an=
 implementation might use the hostname data.</div><span class=3D""><div><br=
></div><div><br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0=
 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div =
class=3D"gmail_extra"><div class=3D"gmail_quote"><div><div style=3D"font-fa=
mily:arial,helvetica,sans-serif;font-size:small"></div><div style=3D"font-f=
amily:arial,helvetica,sans-serif;font-size:small">I think while the extensi=
on you are proposing is indeed minor I would personnaly see this being solv=
ed in general v6 case not just for BGP as Rajiv mentioned.=C2=A0<br></div><=
div style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></=
div><div style=3D"font-family:arial,helvetica,sans-serif;font-size:small">B=
tw are you not running LLDP already on the interfaces ? If so the peer name=
 is already there. If not adding OpenLLDP (<a href=3D"http://open-lldp.org/=
" target=3D"_blank">http://open-lldp.org/</a>) should be a mater of minutes=
 :)</div><span><div style=3D"font-family:arial,helvetica,sans-serif;font-si=
ze:small"><br></div></span></div></div></div></div></blockquote><div><br></=
div></span><div>yep, we have LLDP :) =C2=A0We did consider using LLDP initi=
ally but there are some situations where it doesn&#39;t work:</div><div><ul=
><li>LLDP is not enabled.=C2=A0 This would be uncommon within a data center=
 but I have worked with customers before who turn off LLDP on all customer =
facing links.</li><li>If you want to peer to multiple peers on a single L2 =
segment you are only going to see the L2 switch as a LLDP peer and not all =
of the L3 boxes that you are BGP peering with.=C2=A0 For us we only support=
 the &quot;neighbor swpX interface&quot; syntax for p2p links but that migh=
t change someday and a customer could always configure multiple neighbors o=
n that interface by specifying &quot;neighbor fe80::...... remote-as X&quot=
;.</li></ul></div><span class=3D"HOEnZb"><font color=3D"#888888"><div>Danie=
l</div><div>=C2=A0</div></font></span></div></div></div>
</blockquote></div><br></div>

--001a113a908e13568a051637dc0e--


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Date: Sat, 16 May 2015 21:25:56 +0200
From: Job Snijders <job@instituut.net>
To: John Heasley <heas@shrubbery.net>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sat, May 16, 2015 at 12:37:00PM -0400, John Heasley wrote:
> Am 16.05.2015 um 11:59 schrieb Thomas Mangin <thomas.mangin@exa-networks.co.uk>:
> > 
> > I would rather see this totally harmless draft (as vendors can
> > decide to ignore it without consequences) progress than seeing
> > Cumulus assigning a capability number for it and later find that we
> > have like multisession two different code for the same feature :p
> 
> Or just keep track of your peering info in a database ... With contact
> info, business relationship, etc.  this is not a bgp problem, IMO.
> Its a CRM and NMS problem. 

I agree with John.

One could easily create a tool which takes 'show bgp sum' data and
enriches that view with various database lookups. Passing strings around
in BGP might seem convenient, but does not address the architectual
shortcomings of your system if case you have no idea who your neighbor
is.

Kind regards,

Job


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> One could easily create a tool which takes 'show bgp sum' data and
> enriches that view with various database lookups. Passing strings
> around in BGP might seem convenient, but does not address the
> architectual shortcomings of your system if case you have no idea who
> your neighbor is.

and we're all waiting for the attack where the sender puts tasty things
in the supposed dns name

randy


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Hi John,

On Sat, May 16, 2015 at 9:37 AM, John Heasley <heas@shrubbery.net> wrote:

> Am 16.05.2015 um 11:59 schrieb Thomas Mangin <
> thomas.mangin@exa-networks.co.uk>:
> >
> > I would rather see this totally harmless draft (as vendors can decide to
> ignore it without consequences) progress than seeing Cumulus assigning a
> capability number for it and later find that we have like multisession two
> different code for the same feature :p
>
> Or just keep track of your peering info in a database ... With contact
> info, business relationship, etc.  this is not a bgp problem, IMO.  Its a
> CRM and NMS problem.
>

In the data center, you've met the other side, and its you. I don't think I
said that carrying the hostname was a BGP problem. We see it as a way to
simplify operations in the DC, by supplementing numbers with names,

Dinesh

> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>

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<div dir=3D"ltr">Hi John,<br><div><div class=3D"gmail_extra"><br><div class=
=3D"gmail_quote">On Sat, May 16, 2015 at 9:37 AM, John Heasley <span dir=3D=
"ltr">&lt;<a href=3D"mailto:heas@shrubbery.net" target=3D"_blank">heas@shru=
bbery.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span cl=
ass=3D"">Am 16.05.2015 um 11:59 schrieb Thomas Mangin &lt;<a href=3D"mailto=
:thomas.mangin@exa-networks.co.uk">thomas.mangin@exa-networks.co.uk</a>&gt;=
:<br>
&gt;<br>
&gt; I would rather see this totally harmless draft (as vendors can decide =
to ignore it without consequences) progress than seeing Cumulus assigning a=
 capability number for it and later find that we have like multisession two=
 different code for the same feature :p<br>
<br>
</span>Or just keep track of your peering info in a database ... With conta=
ct info, business relationship, etc.=C2=A0 this is not a bgp problem, IMO.=
=C2=A0 Its a CRM and NMS problem.<br></blockquote><div><br></div><div>In th=
e data center, you&#39;ve met the other side, and its you. I don&#39;t thin=
k I said that carrying the hostname was a BGP problem. We see it as a way t=
o simplify operations in the DC, by supplementing numbers with names,<br><b=
r></div><div>Dinesh<br></div><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class=3D"HOEnZb"><div class=3D"h5">___________________________________=
____________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</div></div></blockquote></div><br></div></div></div>

--089e01681de219decb05163b0752--


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To: Dinesh Dutt <ddutt@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> In the data center, you've met the other side, and its you. I don't
> think I said that carrying the hostname was a BGP problem. We see it
> as a way to simplify operations in the DC, by supplementing numbers
> with names,

and you want to do it by adding yet another bag of dren on an already
massively overloaded, overly complex, fragile, and critical protocol.
as heas, who has done it, says, fix your oss.

randy


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To: Dinesh Dutt <ddutt@cumulusnetworks.com>
From: Curtis Villamizar <curtis@ipv6.occnc.com>
In-reply-to: Your message of "Sat, 16 May 2015 16:07:21 -0700." <CABg5FUVTSJNF2NOeN1m9ESUzQo3HVNu-fut5PTuHZ+LTigD4eQ@mail.gmail.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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In message <CABg5FUVTSJNF2NOeN1m9ESUzQo3HVNu-fut5PTuHZ+LTigD4eQ@mail.gmail=
.com>
Dinesh Dutt writes:
 =

> Hi John,
>  =

> On Sat, May 16, 2015 at 9:37 AM, John Heasley <heas@shrubbery.net> wrote=
:
>  =

> > Am 16.05.2015 um 11:59 schrieb Thomas Mangin <
> > thomas.mangin@exa-networks.co.uk>:
> > >
> > > I would rather see this totally harmless draft (as vendors can decid=
e to
> > ignore it without consequences) progress than seeing Cumulus assigning=
 a
> > capability number for it and later find that we have like multisession=
 two
> > different code for the same feature :p
> >
> > Or just keep track of your peering info in a database ... With contact
> > info, business relationship, etc.  this is not a bgp problem, IMO.  It=
s a
> > CRM and NMS problem.
> >
>  =

> In the data center, you've met the other side, and its you. I don't thin=
k I
> said that carrying the hostname was a BGP problem. We see it as a way to
> simplify operations in the DC, by supplementing numbers with names,
>  =

> Dinesh


Pardon my ignorance of BGP, but wouldn't a check of the router-id
resolve that issue.  You know that non-routable 4 bit thing that is
unique and isn't an address (but somehow manages to fall within an
assigned IPv4 prefix) that has been in BGP for a while.

Look up the router-id maybe?  And yes peering info in a database has
been successfully tried before.  If you need peering info, why is FQDN
any easier to use to look it up than router-id?

Isn't there something in DNS to map an address to FQDN?  Maybe you
could use that.  I think some people have successfully used that too.

Never ran a DC but I always thought that if you brought up a peering
and "it was you" your network was in rather bad shape to start with.

:-)

Curtis


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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--047d7b4512f216a96005163c5ad1
Content-Type: text/plain; charset=UTF-8

Curtis,

 But what would you know... :)  Good to see you, its been a while, hope all
is well.

-jim

On Sat, May 16, 2015 at 8:50 PM, Curtis Villamizar <curtis@ipv6.occnc.com>
wrote:

> In message <
> CABg5FUVTSJNF2NOeN1m9ESUzQo3HVNu-fut5PTuHZ+LTigD4eQ@mail.gmail.com>
> Dinesh Dutt writes:
>
> > Hi John,
> >
> > On Sat, May 16, 2015 at 9:37 AM, John Heasley <heas@shrubbery.net>
> wrote:
> >
> > > Am 16.05.2015 um 11:59 schrieb Thomas Mangin <
> > > thomas.mangin@exa-networks.co.uk>:
> > > >
> > > > I would rather see this totally harmless draft (as vendors can
> decide to
> > > ignore it without consequences) progress than seeing Cumulus assigning
> a
> > > capability number for it and later find that we have like multisession
> two
> > > different code for the same feature :p
> > >
> > > Or just keep track of your peering info in a database ... With contact
> > > info, business relationship, etc.  this is not a bgp problem, IMO.
> Its a
> > > CRM and NMS problem.
> > >
> >
> > In the data center, you've met the other side, and its you. I don't
> think I
> > said that carrying the hostname was a BGP problem. We see it as a way to
> > simplify operations in the DC, by supplementing numbers with names,
> >
> > Dinesh
>
>
> Pardon my ignorance of BGP, but wouldn't a check of the router-id
> resolve that issue.  You know that non-routable 4 bit thing that is
> unique and isn't an address (but somehow manages to fall within an
> assigned IPv4 prefix) that has been in BGP for a while.
>
> Look up the router-id maybe?  And yes peering info in a database has
> been successfully tried before.  If you need peering info, why is FQDN
> any easier to use to look it up than router-id?
>
> Isn't there something in DNS to map an address to FQDN?  Maybe you
> could use that.  I think some people have successfully used that too.
>
> Never ran a DC but I always thought that if you brought up a peering
> and "it was you" your network was in rather bad shape to start with.
>
> :-)
>
> Curtis
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>

--047d7b4512f216a96005163c5ad1
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Curtis,<div><br></div><div>=C2=A0But what would you know..=
. :) =C2=A0Good to see you, its been a while, hope all is well.</div><div><=
br></div><div>-jim</div></div><div class=3D"gmail_extra"><br><div class=3D"=
gmail_quote">On Sat, May 16, 2015 at 8:50 PM, Curtis Villamizar <span dir=
=3D"ltr">&lt;<a href=3D"mailto:curtis@ipv6.occnc.com" target=3D"_blank">cur=
tis@ipv6.occnc.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
In message &lt;<a href=3D"mailto:CABg5FUVTSJNF2NOeN1m9ESUzQo3HVNu-fut5PTuHZ=
%2BLTigD4eQ@mail.gmail.com">CABg5FUVTSJNF2NOeN1m9ESUzQo3HVNu-fut5PTuHZ+LTig=
D4eQ@mail.gmail.com</a>&gt;<br>
<span class=3D"">Dinesh Dutt writes:<br>
<br>
&gt; Hi John,<br>
&gt;<br>
&gt; On Sat, May 16, 2015 at 9:37 AM, John Heasley &lt;<a href=3D"mailto:he=
as@shrubbery.net">heas@shrubbery.net</a>&gt; wrote:<br>
&gt;<br>
&gt; &gt; Am 16.05.2015 um 11:59 schrieb Thomas Mangin &lt;<br>
&gt; &gt; <a href=3D"mailto:thomas.mangin@exa-networks.co.uk">thomas.mangin=
@exa-networks.co.uk</a>&gt;:<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; I would rather see this totally harmless draft (as vendors c=
an decide to<br>
&gt; &gt; ignore it without consequences) progress than seeing Cumulus assi=
gning a<br>
&gt; &gt; capability number for it and later find that we have like multise=
ssion two<br>
&gt; &gt; different code for the same feature :p<br>
&gt; &gt;<br>
&gt; &gt; Or just keep track of your peering info in a database ... With co=
ntact<br>
&gt; &gt; info, business relationship, etc.=C2=A0 this is not a bgp problem=
, IMO.=C2=A0 Its a<br>
&gt; &gt; CRM and NMS problem.<br>
&gt; &gt;<br>
&gt;<br>
&gt; In the data center, you&#39;ve met the other side, and its you. I don&=
#39;t think I<br>
&gt; said that carrying the hostname was a BGP problem. We see it as a way =
to<br>
&gt; simplify operations in the DC, by supplementing numbers with names,<br=
>
&gt;<br>
&gt; Dinesh<br>
<br>
<br>
</span>Pardon my ignorance of BGP, but wouldn&#39;t a check of the router-i=
d<br>
resolve that issue.=C2=A0 You know that non-routable 4 bit thing that is<br=
>
unique and isn&#39;t an address (but somehow manages to fall within an<br>
assigned IPv4 prefix) that has been in BGP for a while.<br>
<br>
Look up the router-id maybe?=C2=A0 And yes peering info in a database has<b=
r>
been successfully tried before.=C2=A0 If you need peering info, why is FQDN=
<br>
any easier to use to look it up than router-id?<br>
<br>
Isn&#39;t there something in DNS to map an address to FQDN?=C2=A0 Maybe you=
<br>
could use that.=C2=A0 I think some people have successfully used that too.<=
br>
<br>
Never ran a DC but I always thought that if you brought up a peering<br>
and &quot;it was you&quot; your network was in rather bad shape to start wi=
th.<br>
<br>
:-)<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
Curtis<br>
</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</div></div></blockquote></div><br></div>

--047d7b4512f216a96005163c5ad1--


From nobody Sat May 16 17:45:18 2015
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> Pardon my ignorance of BGP

this would explain a *lot*!

randy


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sat, May 16, 2015 at 12:08 AM, Daniel Walton
<dwalton@cumulusnetworks.com> wrote:
> It makes troubleshooting much easier.

so does not using private addressing?
why solve this in the bgp space? why not solve this in any of the
other domains much better built for this?


From nobody Sat May 16 19:49:49 2015
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To: Dinesh Dutt <ddutt@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Am 16.05.2015 um 19:07 schrieb Dinesh Dutt <ddutt@cumulusnetworks.com>:
>=20
> In the data center, you've met the other side, and its you. I don't think I=
 said that carrying the hostname was a BGP problem. We see it as a way to si=
mplify operations in the DC, by supplementing numbers with names,
>=20

If you want to give it a name, then do so in your config. Ie: 'neighbor 1.2.=
3.4 name peerWhoICallJoe' provides 'clear ip bgp peerWhoICallJoeNet', usw.

 If i am malicious, which i am, and automated, which i may be, i can change t=
he name every April Fools day - or every day - or after every reboot - or it=
 might move to another device. Your managment should be based on a name that=
 you control and is meaningful to _you_. Even if i like the like the idea of=
 referring to a peer by name, i want it to be the name/ID that i know it by .=
.. In my CRM/database, not whatever goofy name the peer has given to the dev=
ice.=20


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> and we're all waiting for the attack where the sender puts tasty 
> things
> in the supposed dns name

If the worry is about the complexity of handling UTF-8, the draft could 
be change to require ascii 'a' through 'z' (in a case-insensitive 
manner), the digits '0' through '9', and the hyphen ('-') to be put in 
the draft as it is what DNS allows.

Thomas


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>> and we're all waiting for the attack where the sender puts tasty
>> things in the supposed dns name
> If the worry is about the complexity of handling UTF-8, the draft
> could be change to require ascii 'a' through 'z' (in a
> case-insensitive manner), the digits '0' through '9', and the hyphen
> ('-') to be put in the draft as it is what DNS allows.

bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions
on hostnames, the leftmost chunk of the lhs at most.

randy


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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http://exa.net.uk/about/contact-us
On 17 May 2015, at 10:24, Randy Bush wrote:

>>> and we're all waiting for the attack where the sender puts tasty
>>> things in the supposed dns name
>> If the worry is about the complexity of handling UTF-8, the draft
>> could be change to require ascii 'a' through 'z' (in a
>> case-insensitive manner), the digits '0' through '9', and the hyphen
>> ('-') to be put in the draft as it is what DNS allows.
>
> bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions=

> on hostnames, the leftmost chunk of the lhs at most.

I stand corrected. =

That said, then perhaps the way is to only pass the hostname and not the =
fqdn.

Thomas


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--001a11c30bf04e73590516442701
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> If you want to give it a name, then do so in your config. Ie: 'neighbor
> 1.2.3.4 name peerWhoICallJoe' provides 'clear ip bgp peerWhoICallJoeNet',
> usw.
>

=E2=80=8BThe point is they do not want to configure peers. The LL v6 addres=
s=E2=80=8B would
be used for auto-peering.

r.

--001a11c30bf04e73590516442701
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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><div=
>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;b=
order-left:1px #ccc solid;padding-left:1ex">If you want to give it a name, =
then do so in your config. Ie: &#39;neighbor 1.2.3.4 name peerWhoICallJoe&#=
39; provides &#39;clear ip bgp peerWhoICallJoeNet&#39;, usw.<br></blockquot=
e><div><br></div><div><div class=3D"gmail_default" style=3D"font-family:ari=
al,helvetica,sans-serif;font-size:small">=E2=80=8BThe point is they do not =
want to configure peers. The LL v6 address=E2=80=8B would be used for auto-=
peering.</div><div class=3D"gmail_default" style=3D"font-family:arial,helve=
tica,sans-serif;font-size:small"><br></div><div class=3D"gmail_default" sty=
le=3D"font-family:arial,helvetica,sans-serif;font-size:small">r.</div><br><=
/div></div></div></div>

--001a11c30bf04e73590516442701--


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Sat, May 16, 2015 at 11:24:45PM -1000, Randy Bush:
> >> and we're all waiting for the attack where the sender puts tasty
> >> things in the supposed dns name
> > If the worry is about the complexity of handling UTF-8, the draft
> > could be change to require ascii 'a' through 'z' (in a
> > case-insensitive manner), the digits '0' through '9', and the hyphen
> > ('-') to be put in the draft as it is what DNS allows.
> 
> bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions
> on hostnames, the leftmost chunk of the lhs at most.

in which, '-' is not valid, iirc.


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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Sun, 17 May 2015 05:05:25 -0700
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To: John Heasley <heas@shrubbery.net>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Hi John,

I appreciate your taking the time to provide alternate suggestions.

On Sat, May 16, 2015 at 7:49 PM, John Heasley <heas@shrubbery.net> wrote:

> Am 16.05.2015 um 19:07 schrieb Dinesh Dutt <ddutt@cumulusnetworks.com>:
> >
> > In the data center, you've met the other side, and its you. I don't
> think I said that carrying the hostname was a BGP problem. We see it as a
> way to simplify operations in the DC, by supplementing numbers with names,
> >
>
> If you want to give it a name, then do so in your config. Ie: 'neighbor
> 1.2.3.4 name peerWhoICallJoe' provides 'clear ip bgp peerWhoICallJoeNet',
> usw.
>

Interestingly, what you suggest is where we began originally. But this
makes the box configuration specific to each box. In the data center,
making the configuration as cookie-cutter as possible to ease automation is
a fairly fundamental goal given the size of the network.

Dinesh

>
>  If i am malicious, which i am, and automated, which i may be, i can
> change the name every April Fools day - or every day - or after every
> reboot - or it might move to another device. Your managment should be based
> on a name that you control and is meaningful to _you_. Even if i like the
> like the idea of referring to a peer by name, i want it to be the name/ID
> that i know it by ... In my CRM/database, not whatever goofy name the peer
> has given to the device.
>
>

--001a1137a386b6f16f051645e549
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<div dir=3D"ltr"><div>Hi John,<br><br></div>I appreciate your taking the ti=
me to provide alternate suggestions.<br><div class=3D"gmail_extra"><br><div=
 class=3D"gmail_quote">On Sat, May 16, 2015 at 7:49 PM, John Heasley <span =
dir=3D"ltr">&lt;<a href=3D"mailto:heas@shrubbery.net" target=3D"_blank">hea=
s@shrubbery.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" =
style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pa=
dding-left:1ex"><span class=3D"">Am 16.05.2015 um 19:07 schrieb Dinesh Dutt=
 &lt;<a href=3D"mailto:ddutt@cumulusnetworks.com">ddutt@cumulusnetworks.com=
</a>&gt;:<br>
&gt;<br>
&gt; In the data center, you&#39;ve met the other side, and its you. I don&=
#39;t think I said that carrying the hostname was a BGP problem. We see it =
as a way to simplify operations in the DC, by supplementing numbers with na=
mes,<br>
&gt;<br>
<br>
</span>If you want to give it a name, then do so in your config. Ie: &#39;n=
eighbor 1.2.3.4 name peerWhoICallJoe&#39; provides &#39;clear ip bgp peerWh=
oICallJoeNet&#39;, usw.<br></blockquote><div><br></div><div>Interestingly, =
what you suggest is where we began originally. But this makes the box confi=
guration specific to each box. In the data center, making the configuration=
 as cookie-cutter as possible to ease automation is a fairly fundamental go=
al given the size of the network. <br><br>Dinesh</div><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(20=
4,204,204);padding-left:1ex">
<br>
=C2=A0If i am malicious, which i am, and automated, which i may be, i can c=
hange the name every April Fools day - or every day - or after every reboot=
 - or it might move to another device. Your managment should be based on a =
name that you control and is meaningful to _you_. Even if i like the like t=
he idea of referring to a peer by name, i want it to be the name/ID that i =
know it by ... In my CRM/database, not whatever goofy name the peer has giv=
en to the device.<br>
<br>
</blockquote></div><br></div></div>

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From: Dinesh Dutt <ddutt@cumulusnetworks.com>
Date: Sun, 17 May 2015 05:07:15 -0700
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To: Thomas Mangin <thomas.mangin@exa-networks.co.uk>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sun, May 17, 2015 at 3:00 AM, Thomas Mangin <
thomas.mangin@exa-networks.co.uk> wrote:

>
>
> http://exa.net.uk/about/contact-us
> On 17 May 2015, at 10:24, Randy Bush wrote:
>
> >>> and we're all waiting for the attack where the sender puts tasty
> >>> things in the supposed dns name
> >> If the worry is about the complexity of handling UTF-8, the draft
> >> could be change to require ascii 'a' through 'z' (in a
> >> case-insensitive manner), the digits '0' through '9', and the hyphen
> >> ('-') to be put in the draft as it is what DNS allows.
> >
> > bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions
> > on hostnames, the leftmost chunk of the lhs at most.
>
> I stand corrected.
> That said, then perhaps the way is to only pass the hostname and not the
> fqdn.
>

That'll be fine. We added fqdn to allow for cases outside the DC.

On a different note, OSPF has a far more involved modification to allow the
carrying of hostnames (https://tools.ietf.org/html/rfc5642). I'm curious as
to why that was considered OK.

Dinesh

>
> Thomas
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>

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<div dir=3D"ltr"><br><div class=3D"gmail_extra">On Sun, May 17, 2015 at 3:0=
0 AM, Thomas Mangin <span dir=3D"ltr">&lt;<a href=3D"mailto:thomas.mangin@e=
xa-networks.co.uk" target=3D"_blank">thomas.mangin@exa-networks.co.uk</a>&g=
t;</span> wrote:<br><div class=3D"gmail_quote"><blockquote class=3D"gmail_q=
uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,2=
04);padding-left:1ex"><br>
<br>
<a href=3D"http://exa.net.uk/about/contact-us" target=3D"_blank">http://exa=
.net.uk/about/contact-us</a><br>
<span class=3D"">On 17 May 2015, at 10:24, Randy Bush wrote:<br>
<br>
&gt;&gt;&gt; and we&#39;re all waiting for the attack where the sender puts=
 tasty<br>
&gt;&gt;&gt; things in the supposed dns name<br>
&gt;&gt; If the worry is about the complexity of handling UTF-8, the draft<=
br>
&gt;&gt; could be change to require ascii &#39;a&#39; through &#39;z&#39; (=
in a<br>
&gt;&gt; case-insensitive manner), the digits &#39;0&#39; through &#39;9&#3=
9;, and the hyphen<br>
&gt;&gt; (&#39;-&#39;) to be put in the draft as it is what DNS allows.<br>
&gt;<br>
&gt; bzzzzt!=C2=A0 dns is eight bit clear.=C2=A0 you are thinking of some r=
estrictions<br>
&gt; on hostnames, the leftmost chunk of the lhs at most.<br>
<br>
</span>I stand corrected.<br>
That said, then perhaps the way is to only pass the hostname and not the fq=
dn.<br></blockquote><div><br></div><div>That&#39;ll be fine. We added fqdn =
to allow for cases outside the DC. <br><br>On a different note, OSPF has a =
far more involved modification to allow=20
the carrying of hostnames (<a href=3D"https://tools.ietf.org/html/rfc5642">=
https://tools.ietf.org/html/rfc5642</a>). I&#39;m curious as to why that wa=
s considered OK.<br><br></div><div>Dinesh<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex">
<span class=3D""><font color=3D"#888888"><br>
Thomas<br>
</font></span><div class=3D""><div class=3D"h5"><br>
_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
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</div></div></blockquote></div><br></div></div>

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From: "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
To: heasley <heas@shrubbery.net>
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>>>> and we're all waiting for the attack where the sender puts tasty
>>>> things in the supposed dns name
>>> If the worry is about the complexity of handling UTF-8, the draft
>>> could be change to require ascii 'a' through 'z' (in a
>>> case-insensitive manner), the digits '0' through '9', and the hyphen
>>> ('-') to be put in the draft as it is what DNS allows.
>>
>> bzzzzt!  dns is eight bit clear.  you are thinking of some 
>> restrictions
>> on hostnames, the leftmost chunk of the lhs at most.
>
> in which, '-' is not valid, iirc.

‘-‘ is definitively acceptable in hostnames, many of mine are called 
“service-number”.
For the disclosure, this is copy and paste from wikipedia.

Thomas


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> That'll be fine. We added fqdn to allow for cases outside the DC.

In that case the draft could make this capability IBGP only which would 
remove even more concern about security ?
If an ASN want to use it, then it is up to them, it would not affect 
other network.

Thomas


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--001a11c25292d45dfa0516463c1e
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In DC most deployments use EBGP to construct L3 fabric.

Best,
R.
On May 17, 2015 2:16 PM, "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
wrote:

> That'll be fine. We added fqdn to allow for cases outside the DC.
>>
>
> In that case the draft could make this capability IBGP only which would
> remove even more concern about security ?
> If an ASN want to use it, then it is up to them, it would not affect other
> network.
>
> Thomas
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
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<p dir=3D"ltr">In DC most deployments use EBGP to construct L3 fabric.</p>
<p dir=3D"ltr">Best,<br>
R.</p>
<div class=3D"gmail_quote">On May 17, 2015 2:16 PM, &quot;Thomas Mangin&quo=
t; &lt;<a href=3D"mailto:thomas.mangin@exa-networks.co.uk">thomas.mangin@ex=
a-networks.co.uk</a>&gt; wrote:<br type=3D"attribution"><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">
That&#39;ll be fine. We added fqdn to allow for cases outside the DC.<br>
</blockquote>
<br>
In that case the draft could make this capability IBGP only which would rem=
ove even more concern about security ?<br>
If an ASN want to use it, then it is up to them, it would not affect other =
network.<br>
<br>
Thomas<br>
<br>
_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org" target=3D"_blank">Idr@ietf.org</a><br>
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ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote></div>

--001a11c25292d45dfa0516463c1e--


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> In DC most deployments use EBGP to construct L3 fabric.

In that case, the way would be to make it a configuration option on the 
session (for sending).
And if not configured the receiving end would simply ignore it and treat 
it as unknown.

Thomas


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Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-nh-cost-02.txt
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On 16/05/2015 10:58, internet-drafts@ietf.org wrote:
>    This draft augments BGPLS and defines a new extensions to exchange
>    cost information to next-hops for the purpose of calculating best
>    path from a peer perspective rather than local BGP speaker own
>    perspective.

correct me if I'm wrong, but if a RR starts calculating best path from the
point of view of its clients rather than from its own perspective, this
will require best path calculation per client on the RR (ala what goes on
with multiple ribs in bgp route servers).  If this is the case, it might be
worth mentioning it in the draft, because it creates significant
implementation issues.

Nick



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References: <20150516015819.5849234.74476.67011@gmail.com> <CANL=f0gAfs9f-Jt7r3bxMfB7f3Ta+funv8nvmkiCmFsQfGHTcg@mail.gmail.com> <CA+b+ERmY46GHLJUhi5PzwyVJ4Wcns_R11QXC=oLMzAXrYi-v2g@mail.gmail.com> <CABg5FUV5Z+S_m6V7=dB_cuOZpDV-MS_cV+mhwERtjaNCiNfT2w@mail.gmail.com> <CA+b+ERmCpjbBmNAeFyNm6_KTWtOB41Zge559O4jbtEjwKG+yXg@mail.gmail.com> <CABg5FUVSq4Xunivo3tBNh0=x+W=ZOD9pUYGWs18EcuXiFG-4MQ@mail.gmail.com> <CA+b+ER=m_LttyMumi+JLd1cfTLqk16RAQgfbX4qmxGAh1k5Wxw@mail.gmail.com> <CANL=f0iPLinA6Qr8-r6mev4474UZT9g5Bjng_6+f7xPZ2zdfVg@mail.gmail.com> <FC7F6336-4846-4C4C-B002-4DE255F10B2A@exa-networks.co.uk> <89600117-8199-45E0-BB06-C69E94091C17@shrubbery.net> <20150516192556.GB73434@Vurt.local> <m2pp60ur4m.wl%randy@psg.com> <9D75C21F-B76D-451C-B367-2543C94EBEB7@exa-networks.co.uk> <m2fv6vv9nm.wl%randy@psg.com> <F59C5345-A2EF-4BC7-AA5B-56F2D5C94562@exa-networks.co.uk> <CABg5FUVqOXkmzjGWZkmQ8BT63SU+kKY-z2bwpPOZcDZM_fi5Kw@mail.gmail.com> <5F4B9C3A-45AE-445B-9BFC-3755E25AD901@exa-networks.co.uk> <CA+b+ER=EOgNSCXkhqrP=TkLeDSm0s7_7_1kj9X=xe40y3=uX-A@mail.gmail.com> <20431D0B-7BEE-427D-B5AD-C3CB9AD4F7B8@exa-networks.co.uk>
To: Thomas Mangin <thomas.mangin@exa-networks.co.uk>
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Cc: idr wg <idr@ietf.org>, "rraszuk@gmail.com" <rraszuk@gmail.com>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Hi,

Some of the vendors already have problems with the BGP code bloat. Of course=
 session negotiation could take care of the additional feature, but would th=
is option really change the world for BGP users?

Also bear in mind, even if feature is not active on specific session, the co=
de is still there, compiled, adding kBs of binary to existing code base. It c=
an be exploited, it can contain some hard to catch bugs in non-trivial scena=
rios outside typical test cases... It can kick you in the balls during some c=
omplex migration where the bug will suddenly trigger itself.=20

And BTW - last time I checked, BGP was still limited to 4kB segment and this=
 space will all extended communities and so on is getting crowded very fast.=


If the improvement is for operations and not for core of BGP, let's deal wit=
h this at operational/NMS level (and possibly protocols).

--=20
my 0.03PLN

On 17 May 2015, at 14:34, Thomas Mangin <thomas.mangin@exa-networks.co.uk> w=
rote:

>> In DC most deployments use EBGP to construct L3 fabric.
>=20
> In that case, the way would be to make it a configuration option on the se=
ssion (for sending).
> And if not configured the receiving end would simply ignore it and treat i=
t as unknown.
>=20
> Thomas
>=20
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr


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From: Daniel Walton <dwalton@cumulusnetworks.com>
To: Christopher Morrow <morrowc.lists@gmail.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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--bcaec518242c417d380516468411
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On Sat, May 16, 2015 at 8:55 PM, Christopher Morrow <morrowc.lists@gmail.com
> wrote:

> On Sat, May 16, 2015 at 12:08 AM, Daniel Walton
> <dwalton@cumulusnetworks.com> wrote:
> > It makes troubleshooting much easier.
>
> so does not using private addressing?
>

IPv6 link-local addressing is the main motivator, not private addressing.


> why solve this in the bgp space? why not solve this in any of the
> other domains much better built for this?
>

Solving it in BGP is very simple, it works if routing is down (no DNS), it
works for ipv4/ipv6 and it is a very small change.

Daniel

--bcaec518242c417d380516468411
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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sat, May 16, 2015 at 8:55 PM, Christopher Morrow <span dir=3D"ltr">&=
lt;<a href=3D"mailto:morrowc.lists@gmail.com" target=3D"_blank">morrowc.lis=
ts@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span =
class=3D"">On Sat, May 16, 2015 at 12:08 AM, Daniel Walton<br>
&lt;<a href=3D"mailto:dwalton@cumulusnetworks.com">dwalton@cumulusnetworks.=
com</a>&gt; wrote:<br>
&gt; It makes troubleshooting much easier.<br>
<br>
</span>so does not using private addressing?<br></blockquote><div><br></div=
><div>IPv6 link-local addressing is the main motivator, not private address=
ing.</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
why solve this in the bgp space? why not solve this in any of the<br>
other domains much better built for this?<br>
</blockquote></div><br></div><div class=3D"gmail_extra">Solving it in BGP i=
s very simple, it works if routing is down (no DNS), it works for ipv4/ipv6=
 and it is a very small change.</div><div class=3D"gmail_extra"><br></div><=
div class=3D"gmail_extra">Daniel</div><div class=3D"gmail_extra"><br></div>=
<div class=3D"gmail_extra"><br></div></div>

--bcaec518242c417d380516468411--


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From: Daniel Walton <dwalton@cumulusnetworks.com>
To: =?UTF-8?Q?=C5=81ukasz_Bromirski?= <lukasz.bromirski@gmail.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sun, May 17, 2015 at 8:47 AM, =C5=81ukasz Bromirski <
lukasz.bromirski@gmail.com> wrote:

> Hi,
>
> Some of the vendors already have problems with the BGP code bloat. Of
> course session negotiation could take care of the additional feature, but
> would this option really change the world for BGP users?
>
> Also bear in mind, even if feature is not active on specific session, the
> code is still there, compiled, adding kBs of binary to existing code base=
.
> It can be exploited, it can contain some hard to catch bugs in non-trivia=
l
> scenarios outside typical test cases... It can kick you in the balls duri=
ng
> some complex migration where the bug will suddenly trigger itself.
>

Did you see the quagga patch and exabgp patch?  This is probably the
easiest bgp capability to implement there as ever been :)



> And BTW - last time I checked, BGP was still limited to 4kB segment and
> this space will all extended communities and so on is getting crowded ver=
y
> fast.
>


This is a capability in the OPEN message, the hostname is not exchanged as
part of the UPDATE.

Daniel

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sun, May 17, 2015 at 8:47 AM, =C5=81ukasz Bromirski <span dir=3D"ltr=
">&lt;<a href=3D"mailto:lukasz.bromirski@gmail.com" target=3D"_blank">lukas=
z.bromirski@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_q=
uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1e=
x">Hi,<br>
<br>
Some of the vendors already have problems with the BGP code bloat. Of cours=
e session negotiation could take care of the additional feature, but would =
this option really change the world for BGP users?<br>
<br>
Also bear in mind, even if feature is not active on specific session, the c=
ode is still there, compiled, adding kBs of binary to existing code base. I=
t can be exploited, it can contain some hard to catch bugs in non-trivial s=
cenarios outside typical test cases... It can kick you in the balls during =
some complex migration where the bug will suddenly trigger itself.<br></blo=
ckquote><div><br></div><div>Did you see the quagga patch and exabgp patch?=
=C2=A0 This is probably the easiest bgp capability to implement there as ev=
er been :)</div><div><br></div><div>=C2=A0</div><blockquote class=3D"gmail_=
quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1=
ex">
And BTW - last time I checked, BGP was still limited to 4kB segment and thi=
s space will all extended communities and so on is getting crowded very fas=
t.<br></blockquote><div><br></div><div><br></div><div>This is a capability =
in the OPEN message, the hostname is not exchanged as part of the UPDATE.=
=C2=A0</div><div><br></div><div>Daniel</div><div><br></div></div></div></di=
v>

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From: Daniel Walton <dwalton@cumulusnetworks.com>
To: Thomas Mangin <thomas.mangin@exa-networks.co.uk>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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IMO whether a vendor sends the capability by default or not, is a decision
left up to the vendor and not part of the draft.  We've been trying to
avoid adding new configuartion knobs as much as possible so we send it by
default.

Daniel

On Sun, May 17, 2015 at 8:34 AM, Thomas Mangin <
thomas.mangin@exa-networks.co.uk> wrote:

> In DC most deployments use EBGP to construct L3 fabric.
>>
>
> In that case, the way would be to make it a configuration option on the
> session (for sending).
> And if not configured the receiving end would simply ignore it and treat
> it as unknown.
>
>
> Thomas
>
> _______________________________________________
> Idr mailing list
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<div dir=3D"ltr">IMO whether a vendor sends the capability by default or no=
t, is a decision left up to the vendor and not part of the draft.=C2=A0 We&=
#39;ve been trying to avoid adding new configuartion knobs as much as possi=
ble so we send it by default.<div><br></div><div>Daniel</div></div><div cla=
ss=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sun, May 17, 2015 at 8=
:34 AM, Thomas Mangin <span dir=3D"ltr">&lt;<a href=3D"mailto:thomas.mangin=
@exa-networks.co.uk" target=3D"_blank">thomas.mangin@exa-networks.co.uk</a>=
&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0=
 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=3D""><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc=
c solid;padding-left:1ex">
In DC most deployments use EBGP to construct L3 fabric.<br>
</blockquote>
<br></span>
In that case, the way would be to make it a configuration option on the ses=
sion (for sending).<br>
And if not configured the receiving end would simply ignore it and treat it=
 as unknown.<div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
Thomas<br>
<br>
_______________________________________________<br>
Idr mailing list<br>
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</div></div></blockquote></div><br></div>

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--20cf307f38b28cb17f051646ad78
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On Sun, May 17, 2015 at 8:07 AM, Dinesh Dutt <ddutt@cumulusnetworks.com>
wrote:

>
> On Sun, May 17, 2015 at 3:00 AM, Thomas Mangin <
> thomas.mangin@exa-networks.co.uk> wrote:
>
>>
>>
>> http://exa.net.uk/about/contact-us
>> On 17 May 2015, at 10:24, Randy Bush wrote:
>>
>> >>> and we're all waiting for the attack where the sender puts tasty
>> >>> things in the supposed dns name
>> >> If the worry is about the complexity of handling UTF-8, the draft
>> >> could be change to require ascii 'a' through 'z' (in a
>> >> case-insensitive manner), the digits '0' through '9', and the hyphen
>> >> ('-') to be put in the draft as it is what DNS allows.
>> >
>> > bzzzzt!  dns is eight bit clear.  you are thinking of some restrictions
>> > on hostnames, the leftmost chunk of the lhs at most.
>>
>> I stand corrected.
>> That said, then perhaps the way is to only pass the hostname and not the
>> fqdn.
>>
>
> That'll be fine. We added fqdn to allow for cases outside the DC.
>
>
Dropping the domain name part of the draft and s/UTF-8/ASCII/ would be fine
with me.



> On a different note, OSPF has a far more involved modification to allow
> the carrying of hostnames (https://tools.ietf.org/html/rfc5642). I'm
> curious as to why that was considered OK.
>


ISIS as well:

Dynamic Hostname Exchange Mechanism for IS-IS

https://tools.ietf.org/html/rfc5301

Daniel

--20cf307f38b28cb17f051646ad78
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sun, May 17, 2015 at 8:07 AM, Dinesh Dutt <span dir=3D"ltr">&lt;<a h=
ref=3D"mailto:ddutt@cumulusnetworks.com" target=3D"_blank">ddutt@cumulusnet=
works.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(20=
4,204,204);border-left-style:solid;padding-left:1ex"><div dir=3D"ltr"><br><=
div class=3D"gmail_extra"><span class=3D"">On Sun, May 17, 2015 at 3:00 AM,=
 Thomas Mangin <span dir=3D"ltr">&lt;<a href=3D"mailto:thomas.mangin@exa-ne=
tworks.co.uk" target=3D"_blank">thomas.mangin@exa-networks.co.uk</a>&gt;</s=
pan> wrote:<br></span><div class=3D"gmail_quote"><span class=3D""><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-widt=
h:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-le=
ft:1ex"><br>
<br>
<a href=3D"http://exa.net.uk/about/contact-us" target=3D"_blank">http://exa=
.net.uk/about/contact-us</a><br>
<span>On 17 May 2015, at 10:24, Randy Bush wrote:<br>
<br>
&gt;&gt;&gt; and we&#39;re all waiting for the attack where the sender puts=
 tasty<br>
&gt;&gt;&gt; things in the supposed dns name<br>
&gt;&gt; If the worry is about the complexity of handling UTF-8, the draft<=
br>
&gt;&gt; could be change to require ascii &#39;a&#39; through &#39;z&#39; (=
in a<br>
&gt;&gt; case-insensitive manner), the digits &#39;0&#39; through &#39;9&#3=
9;, and the hyphen<br>
&gt;&gt; (&#39;-&#39;) to be put in the draft as it is what DNS allows.<br>
&gt;<br>
&gt; bzzzzt!=C2=A0 dns is eight bit clear.=C2=A0 you are thinking of some r=
estrictions<br>
&gt; on hostnames, the leftmost chunk of the lhs at most.<br>
<br>
</span>I stand corrected.<br>
That said, then perhaps the way is to only pass the hostname and not the fq=
dn.<br></blockquote><div><br></div></span><div>That&#39;ll be fine. We adde=
d fqdn to allow for cases outside the DC. <br><br></div></div></div></div><=
/blockquote><div><br></div><div>Dropping the domain name part of the draft =
and s/UTF-8/ASCII/ would be fine with me.</div><div><br></div><div>=C2=A0</=
div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bor=
der-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:sol=
id;padding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_extra"><div class=
=3D"gmail_quote"><div>On a different note, OSPF has a far more involved mod=
ification to allow=20
the carrying of hostnames (<a href=3D"https://tools.ietf.org/html/rfc5642" =
target=3D"_blank">https://tools.ietf.org/html/rfc5642</a>). I&#39;m curious=
 as to why that was considered OK.</div></div></div></div></blockquote><div=
><br></div><div><br></div><div>ISIS as well:</div><div><br></div><div><pre =
style=3D"font-size:13.3333330154419px;margin-top:0px;margin-bottom:0px;colo=
r:rgb(0,0,0)"><span class=3D"" style=3D"line-height:0pt;display:inline;font=
-size:1em;font-weight:bold"><h1 style=3D"line-height:0pt;display:inline;fon=
t-size:1em">Dynamic Hostname Exchange Mechanism for IS-IS</h1></span></pre>=
</div><div><a href=3D"https://tools.ietf.org/html/rfc5301">https://tools.ie=
tf.org/html/rfc5301</a><br></div><div><br></div><div>Daniel</div><div><br><=
/div><div>=C2=A0</div></div></div></div>

--20cf307f38b28cb17f051646ad78--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Dinesh Dutt <ddutt@cumulusnetworks.com>, Thomas Mangin <thomas.mangin@exa-networks.co.uk>
Thread-Topic: [Idr] draft-walton-bgp-hostname-capability-00
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--_000_D17E08CB1E3C7aceeciscocom_--


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From: "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
To: "=?utf-8?q?=C5=81ukasz?= Bromirski" <lukasz.bromirski@gmail.com>
Date: Sun, 17 May 2015 14:15:46 +0100
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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> Some of the vendors already have problems with the BGP code bloat.

Agree, let’s close the mailing list, we are all guilty here :-)

> And BTW - last time I checked, BGP was still limited to 4kB segment 
> and this space will all extended communities and so on is getting 
> crowded very fast.

This is the first argument I fully agree with .. The draft should indeed 
have included some wording that the capability not not be added should 
the OPEN message be larger than the allowed message size with it.

> If the improvement is for operations and not for core of BGP, let's 
> deal with this at operational/NMS level (and possibly protocols).

I am not fully un-sympathetic to that argument but why not let customers 
vote with their money by asking their vendors what to implement or not. 
Not all implementations include all the BGP RFC !

My issue is that without a Capability number, any implementation of the 
draft could later lead to a conflict and DO cause real interoperability 
issue.

I already pointed to Cumulus that the code they have in their Quagga 
implementation (131) was used by Cisco for Multi-Session before it 
became an RFC ! Mine (72 - which I intend to change too) is perhaps used 
elsewhere too. _That_ could cause a problem (more than anything 
discussed in this thread IMO) !

Thomas


From nobody Sun May 17 08:18:47 2015
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From: Robert Raszuk <robert@raszuk.net>
To: Nick Hilliard <nick@foobar.org>
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--001a113ce726cef12c0516489701
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Hi Nick,

draft-ietf-idr-bgp-nh-cost is just a helper and companion document
to draft-ietf-idr-bgp-optimal-route-reflection.

The observation you make is already described in the latter one.

Moreover as of the current version of the draft there are three modes of
optimality from the perspective of RR:

-A- per RR logical placement
-B- per (peer/update) group logical placement
-C- per client logical placement

See section 2 of draft-ietf-idr-bgp-optimal-route-reflection for more
details.

draft-ietf-idr-bgp-nh-cost helps with all three cases eliminating the need
for remote SPF computation(s) which to some folks was the fundamental
concern in moving further with ORR :).

As of today I am aware of one large implementation which did all -A-, -B- &
-C- options as well as other implementation which did only -A-.

As far as your concern about implementation issues let's observe that
finnaly RRs are moving to x86 compute blades (where they always really
belonged). With that scalability of their processing does significantly
increses.

Best,
r.


On Sun, May 17, 2015 at 2:42 PM, Nick Hilliard <nick@foobar.org> wrote:

> On 16/05/2015 10:58, internet-drafts@ietf.org wrote:
> >    This draft augments BGPLS and defines a new extensions to exchange
> >    cost information to next-hops for the purpose of calculating best
> >    path from a peer perspective rather than local BGP speaker own
> >    perspective.
>
> correct me if I'm wrong, but if a RR starts calculating best path from the
> point of view of its clients rather than from its own perspective, this
> will require best path calculation per client on the RR (ala what goes on
> with multiple ribs in bgp route servers).  If this is the case, it might be
> worth mentioning it in the draft, because it creates significant
> implementation issues.
>
> Nick
>
>
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>

--001a113ce726cef12c0516489701
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,he=
lvetica,sans-serif;font-size:small">Hi Nick,</div><div class=3D"gmail_defau=
lt" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></=
div><div class=3D"gmail_default" style><font face=3D"arial, helvetica, sans=
-serif">draft-ietf-idr-bgp-nh-cost is just a helper and companion document =
to=C2=A0draft-ietf-idr-bgp-optimal-route-reflection.=C2=A0</font><br></div>=
<div class=3D"gmail_default" style><font face=3D"arial, helvetica, sans-ser=
if"><br></font></div><div class=3D"gmail_default" style><font face=3D"arial=
, helvetica, sans-serif">The observation you make is already described in t=
he latter one.=C2=A0</font></div><div class=3D"gmail_default" style><font f=
ace=3D"arial, helvetica, sans-serif"><br></font></div><div class=3D"gmail_d=
efault" style><font face=3D"arial, helvetica, sans-serif">Moreover as of th=
e current version of the draft there are three modes of optimality from the=
 perspective of RR:</font></div><div class=3D"gmail_default" style><font fa=
ce=3D"arial, helvetica, sans-serif"><br></font></div><div class=3D"gmail_de=
fault" style><font face=3D"arial, helvetica, sans-serif">-A- per RR logical=
 placement=C2=A0</font></div><div class=3D"gmail_default" style><font face=
=3D"arial, helvetica, sans-serif">-B- per (peer/update) group logical place=
ment=C2=A0</font></div><div class=3D"gmail_default" style><font face=3D"ari=
al, helvetica, sans-serif">-C- per client logical placement=C2=A0</font></d=
iv><div class=3D"gmail_default" style><font face=3D"arial, helvetica, sans-=
serif"><br></font></div><div class=3D"gmail_default" style><font face=3D"ar=
ial, helvetica, sans-serif">See section 2 of=C2=A0draft-ietf-idr-bgp-optima=
l-route-reflection for more details.=C2=A0</font></div><div class=3D"gmail_=
default" style><font face=3D"arial, helvetica, sans-serif"><br></font></div=
><div class=3D"gmail_default" style><font face=3D"arial, helvetica, sans-se=
rif">draft-ietf-idr-bgp-nh-cost helps with all three cases eliminating the =
need for remote SPF computation(s) which to some folks was the fundamental =
concern in moving further with ORR :).<br></font></div><div class=3D"gmail_=
default" style><br></div><div class=3D"gmail_default" style><font face=3D"a=
rial, helvetica, sans-serif">As of today I am aware of one large implementa=
tion which did all -A-, -B- &amp; -C- options as well as other implementati=
on which did only -A-.</font></div><div class=3D"gmail_default" style><font=
 face=3D"arial, helvetica, sans-serif"><br></font></div><div class=3D"gmail=
_default" style>As far as your concern about implementation issues let&#39;=
s observe that finnaly RRs are moving to x86 compute blades (where they alw=
ays really belonged). With that scalability of their processing does signif=
icantly increses.</div><div class=3D"gmail_default" style><br></div><div cl=
ass=3D"gmail_default" style>Best,</div><div class=3D"gmail_default" style>r=
.</div><div class=3D"gmail_default" style><br></div></div><div class=3D"gma=
il_extra"><br><div class=3D"gmail_quote">On Sun, May 17, 2015 at 2:42 PM, N=
ick Hilliard <span dir=3D"ltr">&lt;<a href=3D"mailto:nick@foobar.org" targe=
t=3D"_blank">nick@foobar.org</a>&gt;</span> wrote:<br><blockquote class=3D"=
gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-=
left:1ex"><span class=3D"">On 16/05/2015 10:58, <a href=3D"mailto:internet-=
drafts@ietf.org">internet-drafts@ietf.org</a> wrote:<br>
&gt;=C2=A0 =C2=A0 This draft augments BGPLS and defines a new extensions to=
 exchange<br>
&gt;=C2=A0 =C2=A0 cost information to next-hops for the purpose of calculat=
ing best<br>
&gt;=C2=A0 =C2=A0 path from a peer perspective rather than local BGP speake=
r own<br>
&gt;=C2=A0 =C2=A0 perspective.<br>
<br>
</span>correct me if I&#39;m wrong, but if a RR starts calculating best pat=
h from the<br>
point of view of its clients rather than from its own perspective, this<br>
will require best path calculation per client on the RR (ala what goes on<b=
r>
with multiple ribs in bgp route servers).=C2=A0 If this is the case, it mig=
ht be<br>
worth mentioning it in the draft, because it creates significant<br>
implementation issues.<br>
<br>
Nick<br>
<br>
<br>
_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
</blockquote></div><br></div>

--001a113ce726cef12c0516489701--


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In message <m2h9rcuj53.wl%randy@psg.com>
Randy Bush writes:
> 
> > Pardon my ignorance of BGP
>  
> this would explain a *lot*!
>  
> randy

Grand Wizard Randy,

But you already knew that.  :-)

Curtis


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the solace for these bikesheds is that folk one misses surface

randy


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In message <CABg5FUVqOXkmzjGWZkmQ8BT63SU+kKY-z2bwpPOZcDZM_fi5Kw@mail.gmail=
.com>
Dinesh Dutt writes:
 =

> On Sun, May 17, 2015 at 3:00 AM, Thomas Mangin <
> thomas.mangin@exa-networks.co.uk> wrote:
>  =

> >
> >
> > http://exa.net.uk/about/contact-us
> > On 17 May 2015, at 10:24, Randy Bush wrote:
> >
> > >>> and we're all waiting for the attack where the sender puts tasty
> > >>> things in the supposed dns name
> > >> If the worry is about the complexity of handling UTF-8, the draft
> > >> could be change to require ascii 'a' through 'z' (in a
> > >> case-insensitive manner), the digits '0' through '9', and the hyphe=
n
> > >> ('-') to be put in the draft as it is what DNS allows.
> > >
> > > bzzzzt!  dns is eight bit clear.  you are thinking of some restricti=
ons
> > > on hostnames, the leftmost chunk of the lhs at most.
> >
> > I stand corrected.
> > That said, then perhaps the way is to only pass the hostname and not t=
he
> > fqdn.
> >
>  =

> That'll be fine. We added fqdn to allow for cases outside the DC.
>  =

> On a different note, OSPF has a far more involved modification to allow =
the
> carrying of hostnames (https://tools.ietf.org/html/rfc5642). I'm curious=
 as
> to why that was considered OK.
>  =

> Dinesh


OSPF can and often is run on unnumbered interfaces (or using link
local addresses in IPv6).  You can't use rDNS in these cases and the
router-id is not supposed to be an address so you can't be sure a rDNS
lookup of the router-id will yield anything useful.  [Realistically,
ISIS did it so OSPF felt obligated.]

AFAIK - BGP is still being run on numbered interfaces or bound to a
numbered loopback interface, which in both cases can be looked up
using rDNS to get FQDN.

If you use reuse PI space within the DC rather than routeable, or
unique allocation from 10/8, or better yet use IPv6, you create your
own mess and you are proposing changing BGP to bandaid over it.

Cluelessly yours,

Curtis


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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Sun, May 17, 2015 at 8:50 AM, Daniel Walton
<dwalton@cumulusnetworks.com> wrote:
>
>
> On Sat, May 16, 2015 at 8:55 PM, Christopher Morrow
> <morrowc.lists@gmail.com> wrote:
>>
>> On Sat, May 16, 2015 at 12:08 AM, Daniel Walton
>> <dwalton@cumulusnetworks.com> wrote:
>> > It makes troubleshooting much easier.
>>
>> so does not using private addressing?
>
>
> IPv6 link-local addressing is the main motivator, not private addressing.

equivalent to private addressing, in my opinion.

>>
>> why solve this in the bgp space? why not solve this in any of the
>> other domains much better built for this?
>
>
> Solving it in BGP is very simple, it works if routing is down (no DNS), it
> works for ipv4/ipv6 and it is a very small change.

'is very simple' and 'very small change'... famous last words.

I suppose I hear this:
   "Automation in a network (DC or wide area) is moving forward. We
want to also be able to drop hints that 'peer ip blah is host X' or
the like."

Why not, since  you are automating things, all fancy and stuff, also
include the hostname in the config? (as mr. heasley points out).
Surely in your automated processes you'll know whom you are talking to
and can lay out the right config data as you go, eh?

The problem expands beyond the 'DC' when you add it as a generic
capability to BGP... we all have to pay for the 'solution' in other
gear/code/problems/poor-choices.

Also, this struck me as funny:
  " it works if routing is down (no DNS), "

err... 'if all routing is down', because if your peer is down it's not
working, right? This actually argues for Mr Heasley's position... put
the name in the config (gathered from your automation and network
discovery work) so when 'why is peer ff02:asd:as:as:asas:01 down?' you
can see instead: "Peer abc123 is down'.

-chris


From nobody Sun May 17 18:59:30 2015
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From: Haoweiguo <haoweiguo@huawei.com>
To: "idr@ietf.org" <idr@ietf.org>
Thread-Topic: New Version Notification for draft-hao-idr-ls-trill-00.txt
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Hi Folks,
A new version of "Distribution of TRILL Link-State using BGP" was posted.=20
Your comments and suggestions are appreciated.

Thanks,
weiguo

________________________________________
From: internet-drafts@ietf.org [internet-drafts@ietf.org]
Sent: Monday, May 18, 2015 9:54
To: Haoweiguo; Donald E. Eastlake; Donald E. Eastlake 3rd; Haoweiguo
Subject: New Version Notification for draft-hao-idr-ls-trill-00.txt

A new version of I-D, draft-hao-idr-ls-trill-00.txt
has been successfully submitted by Weiguo Hao and posted to the
IETF repository.

Name:           draft-hao-idr-ls-trill
Revision:       00
Title:          Distribution of TRILL Link-State using BGP
Document date:  2015-05-18
Group:          Individual Submission
Pages:          11
URL:            https://www.ietf.org/internet-drafts/draft-hao-idr-ls-trill=
-00.txt
Status:         https://datatracker.ietf.org/doc/draft-hao-idr-ls-trill/
Htmlized:       https://tools.ietf.org/html/draft-hao-idr-ls-trill-00


Abstract:
   This draft describes a TRILL link state and MAC address reachability
   information distribution mechanism using a BGP LS extension.
   External components such as an SDN Controller can leverage the
   information for topology visibility, troubleshooting, network
   automation, etc.




Please note that it may take a couple of minutes from the time of submissio=
n
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat=


From nobody Sun May 17 20:57:43 2015
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015
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Support.

-Jie

From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Susan Hares
Sent: Wednesday, May 06, 2015 9:11 AM
To: idr@ietf.org
Cc: 'Jeff Haas'
Subject: Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redir=
ect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015

The IDR mail list has received no comments on the the revision of the draft=
-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for thi=
s draft, this call is extended to 5/18/2015.   Unless this draft receives s=
upport comments, this draft will not be forwarded to the IESG.

You can see the final revision at the following:

http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt


Sue Hares and John Scudder

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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Support.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">-Jie<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
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<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> Idr [mailto:idr-bounces@ietf.org]
<b>On Behalf Of </b>Susan Hares<br>
<b>Sent:</b> Wednesday, May 06, 2015 9:11 AM<br>
<b>To:</b> idr@ietf.org<br>
<b>Cc:</b> 'Jeff Haas'<br>
<b>Subject:</b> Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspe=
c-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015<o:p></o=
:p></span></p>
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<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The IDR mail list has received =
no comments on the the revision of the draft-ietf-idr-flowspec-redirect-rt-=
bis-04.txt.&nbsp; &nbsp;Due to earlier support for this draft, this call is=
 extended to 5/18/2015. &nbsp;&nbsp;Unless this draft receives
 support comments, this draft will not be forwarded to the IESG. <o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">You can see the final revision =
at the following:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"http://www.ietf.org/=
id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt">http://www.ietf.org/id/d=
raft-ietf-idr-flowspec-redirect-rt-bis-04.txt</a><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Sue Hares and John Scudder &nbs=
p;<o:p></o:p></span></p>
</div>
</div>
</body>
</html>

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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Daniel Walton <dwalton@cumulusnetworks.com>, idr wg <idr@ietf.org>, Dinesh Dutt <ddutt@cumulusnetworks.com>
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From nobody Mon May 18 00:42:33 2015
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From: iLya Varlashkin <ilya@nobulus.com>
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To: Nick Hilliard <nick@foobar.org>
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-nh-cost-02.txt
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Hi Nick,

> On 17 May 2015, at 13:42, Nick Hilliard <nick@foobar.org> wrote:
>=20
> On 16/05/2015 10:58, internet-drafts@ietf.org wrote:
>>   This draft augments BGPLS and defines a new extensions to exchange
>>   cost information to next-hops for the purpose of calculating best
>>   path from a peer perspective rather than local BGP speaker own
>>   perspective.
>=20
> correct me if I'm wrong, but if a RR starts calculating best path from =
the
> point of view of its clients rather than from its own perspective, =
this
> will require best path calculation per client on the RR (ala what goes =
on
> with multiple ribs in bgp route servers).  If this is the case, it =
might be
> worth mentioning it in the draft, because it creates significant
> implementation issues.

Yes, RR will calculate best path per client, that=E2=80=99s the whole =
idea. This has been discussed with previous versions of this draft as =
well as in regards to draft-ietf-idr-bgp-optimal-route-reflection (ORR). =
In fact ORR draft provides the foundation (per client calculations) =
while this draft provides means of conveying next-hop cost information.

Also, section 3 of draft-ietf-idr-bgp-nh-cost-02 does say that NHIB =
information is used instead of speaker=E2=80=99s own IGP cost.

Kind regards,
iLya




From nobody Mon May 18 01:06:00 2015
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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hi daniel,

given the LL nature of the IP addresses (= no DNS) this sounds a reasonable proposal.

assuming that all name information go to some internal database for resolution:
have you put some thought on how to consolidate naming information from different
sources ? (bgp-hostnames, BGP-LS node/link names, LLDP ...)

/hannes

On Sat, May 16, 2015 at 12:08:35AM -0400, Daniel Walton wrote:
|    Many of our customers use a Clos architecture and bgp peer to the IPv6 LL
|    address of every directly connected router.  To avoid configuring neighbor
|    statements with LL addresses we support a "neighbor swpX interface"
|    command ("swpX" is the default notation for an interface name in cumulus
|    linux).  We then peer to the LL address on the other end of the swpX link
|    (we only support this for point-to-point links).
|    When you run commands like "show ip bgp summary" you see a list of
|    interface names instead of IP addresses. Typically if you are loopback
|    peering you either become familiar with "10.0.0.1 is Chicago" because you
|    see 10.0.0.1 in the 'show ip bgp summ' output of several different routers
|    or you could use DNS to do a lookup on 10.0.0.1 and put the hostname in
|    the output.  When every box is peering to LL addresses though ("swpX" for
|    short for us) you can't easily tell who that peer is and you can't use DNS
|    because they LL addresses
|    Before
|    leaf-11# show ip bgp summ
|    BGP router identifier 6.0.0.5, local AS number 65101
|    BGP table version 25
|    RIB entries 33, using 3960 bytes of memory
|    Peers 6, using 100 KiB of memory
|    Peer groups 1, using 56 bytes of memory
|    Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
|     State/PfxRcd
|    swp1            4 65000     196     198        0    0    0 00:02:51
|     9
|    swp2            4 65000     195     200        0    0    0 00:02:51
|     9
|    swp3            4 65000     197     200        0    0    0 00:02:51
|     9
|    swp4            4 65000     198     200        0    0    0 00:02:51
|     9
|    swp5            4 65201     207     200        0    0    0 00:02:51
|     2
|    swp6            4 65202     210     201        0    0    0 00:02:52
|     2
|    Total number of neighbors 6
|    leaf-11#
|    spine-3# show ip bgp summ
|    BGP router identifier 6.0.0.15, local AS number 65000
|    BGP table version 19
|    RIB entries 33, using 3960 bytes of memory
|    Peers 8, using 134 KiB of memory
|    Peer groups 1, using 56 bytes of memory
|    Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
|     State/PfxRcd
|    swp5            4 65101     675     675        0    0    0 00:10:49
|     5
|    swp6            4 65101     678     676        0    0    0 00:10:50
|     5
|    swp7            4 65101     667     668        0    0    0 00:10:48
|     5
|    swp8            4 65101     676     676        0    0    0 00:10:49
|     5
|    swp9            4 65102     701     692        0    0    0 00:11:04
|     5
|    swp10           4 65102     701     692        0    0    0 00:11:04
|     5
|    swp11           4 65102     701     691        0    0    0 00:11:04
|     5
|    swp12           4 65102     701     692        0    0    0 00:11:04
|     5
|    Total number of neighbors 8
|    spine-3#
|    spine-3#
|    After
|    leaf-11# show ip bgp summ
|    BGP router identifier 6.0.0.5, local AS number 65101
|    BGP table version 25
|    RIB entries 33, using 3960 bytes of memory
|    Peers 6, using 100 KiB of memory
|    Peer groups 1, using 56 bytes of memory
|    Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
|     State/PfxRcd
|    spine-1(swp1)   4 65000     211     213        0    0    0 00:03:07
|     9
|    spine-2(swp2)   4 65000     210     215        0    0    0 00:03:07
|     9
|    spine-3(swp3)   4 65000     212     215        0    0    0 00:03:07
|     9
|    spine-4(swp4)   4 65000     213     215        0    0    0 00:03:07
|     9
|    tor-11(swp5)    4 65201     222     215        0    0    0 00:03:07
|     2
|    tor-12(swp6)    4 65202     225     216        0    0    0 00:03:08
|     2
|    Total number of neighbors 6
|    leaf-11#
|    spine-3# show ip bgp summ
|    BGP router identifier 6.0.0.15, local AS number 65000
|    BGP table version 19
|    RIB entries 33, using 3960 bytes of memory
|    Peers 8, using 134 KiB of memory
|    Peer groups 1, using 56 bytes of memory
|    Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down
|     State/PfxRcd
|    leaf-11(swp5)   4 65101    1119    1119        0    0    0 00:18:13
|     5
|    leaf-12(swp6)   4 65101    1122    1120        0    0    0 00:18:14
|     5
|    leaf-13(swp7)   4 65101    1110    1111        0    0    0 00:18:12
|     5
|    leaf-14(swp8)   4 65101    1119    1119        0    0    0 00:18:13
|     5
|    leaf-21(swp9)   4 65102    1144    1135        0    0    0 00:18:28
|     5
|    leaf-22(swp10)  4 65102    1144    1135        0    0    0 00:18:28
|     5
|    leaf-23(swp11)  4 65102    1144    1134        0    0    0 00:18:28
|     5
|    leaf-24(swp12)  4 65102    1144    1135        0    0    0 00:18:28
|     5
|    Total number of neighbors 8
|    spine-3#
|    It makes troubleshooting much easier.
|    Daniel
|    On Fri, May 15, 2015 at 9:58 PM, <[1]deleskie@gmail.com> wrote:
| 
|      Agree.. adding code for no real operational benefit
| 
|      Sent from my BlackBerry 10 smartphone on the Rogers network.
|        Original Message
|      From: Randy Bush
|      Sent: Friday, May 15, 2015 10:52 PM
|      To: Daniel Walton
|      Cc: idr wg; Dinesh Dutt
|      Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
|      one more unneeded place for things to go wrong
| 
|      randy
| 
|      _______________________________________________
|      Idr mailing list
|      [2]Idr@ietf.org
|      [3]https://www.ietf.org/mailman/listinfo/idr
| 
| References
| 
|    Visible links
|    1. mailto:deleskie@gmail.com
|    2. mailto:Idr@ietf.org
|    3. https://www.ietf.org/mailman/listinfo/idr

| _______________________________________________
| Idr mailing list
| Idr@ietf.org
| https://www.ietf.org/mailman/listinfo/idr


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From: <bruno.decraene@orange.com>
To: Christopher Morrow <morrowc.lists@gmail.com>, Daniel Walton <dwalton@cumulusnetworks.com>
Thread-Topic: [Idr] draft-walton-bgp-hostname-capability-00
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> From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Christopher Morrow
> Sent: Sunday, May 17, 2015 2:55 AM
>=20
> On Sat, May 16, 2015 at 12:08 AM, Daniel Walton
> <dwalton@cumulusnetworks.com> wrote:
> > It makes troubleshooting much easier.
>=20
> so does not using private addressing?
> why solve this in the bgp space? why not solve this in any of the other
> domains much better built for this?

+1

e.g. what about SNMPv1? Seems to fit all requirements:
- simple=20
- available now
- works if routing is down
- works in lab
- works for all "upper" layer protocols / same name for all
- works with link local
- authentication/encryption not required
- no configuration needed  (use IP@ for the BGP session)

Regarding MIB, either MIB-II System name (1.3.6.1.2.1.1.5), or a to be stan=
dardized "BGP name", or a vendor specific OID.=20

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[feeling too lazy to trim too much]

The "gotcha" I point out below is a big one: It tells you that behavior of
when you prepend is only half the problem and when you do loop detection is
the other half.  If we're going to get hung up in pedantic land (not your
fault, Wes), this means that we should hold the document and take the
appropriate surveys about loop detection.  Consistency of the behavior with
a given AS is critical - and thus has a bias towards similar behaviors from
vendors.

If you decide to make a recommendation about one behavior or the other,
you're going to reduce this to a popularity contest.  While WG participants
may feel strongly about their particular implementation of when they
prepend, they may not like what the deep introspection into the security
and operational impacts of when loop detection is done means.

The text below, which notes that both are acceptable options, but choose
based on when loop detection is done would support the right part of such a
discussion.  I'm supportive of adding appropriate text.


-- Jeff (and people wonder why we're hesitant to document long working hacks)

On Tue, May 12, 2015 at 03:47:33PM -0400, George, Wes wrote:
> I'm still awaiting feedback (whether from Alvaro or other members of the WG or both) on how to address the remaining concerns blocking this draft from proceeding, about where to add the ASN and how to provide that guidance, whether we integrate a variant of the text below, or something else entirely.
> 
> Thanks,
> 
> Wes
> 
> 
> From: "Alvaro Retana (aretana)" <aretana@cisco.com<mailto:aretana@cisco.com>>
> Date: Wednesday, April 29, 2015 at 12:59 PM
> To: "George, Wes" <wesley.george@twcable.com<mailto:wesley.george@twcable.com>>, "amante@apple.com<mailto:amante@apple.com>" <amante@apple.com<mailto:amante@apple.com>>
> Cc: Idr <idr@ietf.org<mailto:idr@ietf.org>>, Jeffrey Haas <jhaas@pfrc.org<mailto:jhaas@pfrc.org>>
> Subject: Re: 2 Week WG LC on draft-ietf-idr-as-migration (4/9 to 4/23/2105
> 
> On 4/29/15, 11:08 AM, "George, Wes" <wesley.george@twcable.com<mailto:wesley.george@twcable.com>> wrote:
> 
> Wes:
> 
> Hi!
> 
> Thanks for talking this out with me — I really appreciate the patience.  As you, I would also like to hear more from others; this is an important document!
> 
> . . .
> WG] . . . several folks in the WG seem to agree that the better solution is to add the AS on receipt so that the route is consistent within the AS in order to avoid loops.
> 
> I would prefer to see a definite statement.  If you don’t want to exclude one of the options then pick one (SHOULD — for the "right amount of wiggle room") and then mention the other as an option (MAY).  In the end the effect is the same (no one is excluded), but the answer to “When should I prepend?” is clearer:  do it when you SHOULD (but you MAY also do it at other times).
> 
> WG] Well, I'm trying to avoid either re-hashing the apparent disagreement between the vendors, having to discuss deep details about multiple vendors' implementation choices to explain the should vs may and/or being responsible for fixing an existing ambiguity in the BGP spec, especially since at least one of those things is, as you said, the reason that this draft came back to the WG in the first place. Since email is bad at conveying tone, I should be clear that while I am a bit frustrated, I'm not trying to be combative here. It appears to me that there isn't a single right answer to the question you're posing, so I don't really know what the definite statement should be, which is why I didn't make it.
> 
> The closest I've found is the last bit of Jeff's April 21 email, but even that is only discussing the gotchas, not making a definite statement:
> "The issue has to do with where an implementation does its loop detection.
> Some implementations do loop detection at every BGP speaker.  Some do them
> only at an ebgp edge.  Some bias this behavior based on local-as being
> enabled or not.  How you do your loop detection and when heavily biases your
> choice of implementation.  In implementations that only requires local-as at
> your ebgp edges but do loop detection at route reflectors/external confederation
> routers, adding your local-as as part of import is a problem.
> 
> So, consistency isn't only a big deal as part of when/where you do your
> local-as prepend, it's also a matter of where you do loop detection.  If
> implementations in the absence of some "outside the scope" implementation
> were to pedantically implement the base BGP RFC, the migration mechanisms
> would be a bit biased to a given solution."
> 
> Would something like this text be the right level of background info to provide unambiguous but unbiased guidance without requiring pages of additional discussion?
> 
> Ok..how about this:
> 
>        Internal: the router SHOULD append the configured "Local AS" ASN
>        in the AS_PATH attribute either before installing the route or
>        before advertising the UPDATE to an iBGP neighbor.  Please see section 3.3.1
>        for additional guidance.
> 
> Then we would need to add a new 3.3.1 section with a short discussion of pros/cons related to the consistency and loop detection angles.
> 
> If this works for you, then we can work on the text that goes there.  [I haven’t looked at Jeff’s text in detail yet.]
> 
> Thanks!
> 
> Alvaro.
> 
> ________________________________
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> they may not like what the deep introspection into the security and
> operational impacts of when loop detection is done means.

should this not be done irregardless?  while we finesse this document
out the door, seems as if this would be good to do in parallel.

randy


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+1

-----Original Message-----
From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Randy Bush
Sent: Monday, May 18, 2015 1:30 PM
To: Jeffrey Haas
Cc: idr wg; Shane Amante
Subject: Re: [Idr] 2 Week WG LC on draft-ietf-idr-as-migration

> they may not like what the deep introspection into the security and
> operational impacts of when loop detection is done means.

should this not be done irregardless?  while we finesse this document
out the door, seems as if this would be good to do in parallel.

randy

_______________________________________________
Idr mailing list
Idr@ietf.org
https://www.ietf.org/mailman/listinfo/idr


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Yes/support

Cheers,
Jeff

From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Susan Hares
Sent: Wednesday, May 06, 2015 9:11 AM
To: idr@ietf.org<mailto:idr@ietf.org>
Cc: 'Jeff Haas'
Subject: Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspec-redir=
ect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015

The IDR mail list has received no comments on the the revision of the draft=
-ietf-idr-flowspec-redirect-rt-bis-04.txt.   Due to earlier support for thi=
s draft, this call is extended to 5/18/2015.   Unless this draft receives s=
upport comments, this draft will not be forwarded to the IESG.

You can see the final revision at the following:

http://www.ietf.org/id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt


Sue Hares and John Scudder

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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>
<div>
<div>Yes/support</div>
<div>
<div><span style=3D"font-family: Calibri; "><br>
</span></div>
<div><span style=3D"font-family: Calibri; ">Cheers,</span></div>
<div><font class=3D"Apple-style-span" color=3D"#000000"><font class=3D"Appl=
e-style-span" face=3D"Calibri">Jeff</font></font></div>
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<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size: 10pt; fo=
nt-family: Tahoma, sans-serif;">From:</span></b><span lang=3D"EN-US" style=
=3D"font-size: 10pt; font-family: Tahoma, sans-serif;"> Idr [<a href=3D"mai=
lto:idr-bounces@ietf.org">mailto:idr-bounces@ietf.org</a>]
<b>On Behalf Of </b>Susan Hares<br>
<b>Sent:</b> Wednesday, May 06, 2015 9:11 AM<br>
<b>To:</b> <a href=3D"mailto:idr@ietf.org">idr@ietf.org</a><br>
<b>Cc:</b> 'Jeff Haas'<br>
<b>Subject:</b> Re: [Idr] 2 week WG LC on changes to draft-ietf-idr-flowspe=
c-redirect-rt-bis-04.txt (4/20 to 5/4/2015) - extended to 5/18/2015<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The IDR mail list has received =
no comments on the the revision of the draft-ietf-idr-flowspec-redirect-rt-=
bis-04.txt.&nbsp; &nbsp;Due to earlier support for this draft, this call is=
 extended to 5/18/2015. &nbsp;&nbsp;Unless this draft receives
 support comments, this draft will not be forwarded to the IESG. <o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">You can see the final revision =
at the following:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"http://www.ietf.org/=
id/draft-ietf-idr-flowspec-redirect-rt-bis-04.txt">http://www.ietf.org/id/d=
raft-ietf-idr-flowspec-redirect-rt-bis-04.txt</a><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Sue Hares and John Scudder &nbs=
p;<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</blockquote>
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From nobody Tue May 19 04:47:18 2015
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From: Nick Hilliard <nick@foobar.org>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On 16/05/2015 02:26, Daniel Walton wrote:
> https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00
> 
> Feedback is welcome. There is a "Sectino" typo in the intro, will clean
> that up. 

I like this idea because it makes my life as an operator easier.

There is a similar option in ISIS for transmitting hostnames in ISIS.  This
is operationally useful for a wide variety of purposes.

I would suggest that it would be more appropriate to define a generic text
bgp capability along the lines of draft-ietf-idr-advisory, and define the
BGP hostname as a subtype rather than using a dedicated bgp hostname
capability.

Nick



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From: "Alvaro Retana (aretana)" <aretana@cisco.com>
To: "draft-ietf-idr-ls-distribution@tools.ietf.org" <draft-ietf-idr-ls-distribution@tools.ietf.org>
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--_000_D17ED917B07E9aretanaciscocom_
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Authors:

Hi!

I just finished reading this draft.  There are a couple of things I would l=
ike to talk about before moving it forward (=93Major=94 below).  I also hav=
e a number of minor comments and some nits.

Alia had already produced an AD review [https://www.ietf.org/mail-archive/w=
eb/idr/current/msg14146.html], but I didn=92t see any follow up.  Our comme=
nts don=92t fully overlap, so I expect both sets to be addressed.

Also, during the IETF Last Call some comments came in, but none of the auth=
ors replied, including comments from IANA.  Please address those as well.

Thanks!

Alvaro.


Major:

  1.  Section 5 (IANA Considerations)
     *   I didn=92t see this comment as part of IANA=92s review, but the te=
xt about the Designated Experts should be clarified.  There is some guidanc=
e in RFC5226.
     *   "Note to RFC Editor: this section may be removed on publication as=
 an RFC.=94  The IANA considerations section should remain because there ar=
e in fact considerations there.
     *   I would like to have Designated Experts in place soon.  It seems t=
o me that having 2 of the authors volunteer (primary and backup) would be i=
deal.  Please let me knot if you want to do it.
  2.  6.1.2 (Installation and Initial Setup): [default] "maximum rate at wh=
ich Link-State NLRIs will be advertised/withdrawn from neighbors is set to =
200 updates per second.=94  Where did the number come from?  It does look v=
ery big.  Are you assuming just changes or startup as well?  One of my conc=
erns is the interaction with other BGP stuff (like regular routing!).  In f=
act, in 6.1.5 (Impact on Network Operation) you wrote:  "Frequency of Link-=
State NLRI updates could interfere with regular BGP prefix distribution.  A=
 network operator MAY use a dedicated Route-Reflector infrastructure to dis=
tribute Link-State NLRIs.=94  Why not use SHOULD?  If there may be signific=
ant operational impact I think you should be more direct with the guidance.
  3.  6.2.2 (Fault Management). "If an implementation of BGP-LS detects a m=
alformed attribute, then it SHOULD use the 'Attribute Discard=92 action..=
=94  Doesn't this mean that the information may be useless, completely miss=
ing, or in the best case incomplete?  Aren=92t we better off just resetting=
 the session or at least requesting a route refresh?

Minor:

  1.  3.1 (TLV Format): "Unrecognized types are preserved and propagated.=
=94  This statement sounds necessary for interoperability and the correct p=
ropagation of the information.  Should it have a =93MUST=94 in it?
  2.  3.1 (TLV Format): =93If there are more TLVs of the same type, then th=
e TLVs MUST be ordered in ascending order of the TLV value within the TLVs =
with the same type.=94  Ordered by value?  How is that done?  Some TLVs con=
tain sub-TLVs in the value field, but others don=92t.
  3.  3.2.1 (Node Descriptors):  The BGP-LS Identifier is used, but it is d=
efined later in 3.2.1.4.  Please add a reference so that it is not mistaken=
 for the =93Identifier=94 (in the NLRIs themselves in Section 3.2).
  4.  3.3.2 (Link Attribute TLVs):  The attributes used are defined for ISI=
S, some are easily derived from OSPF, but other don=92t map to anything.  F=
or example, =93administrative group (color)=94.  How are these types of und=
efined parameters in OSPF figured out?  I suspect the easy answer is to jus=
t say that it is out of scope, but the fact remains that there can be infor=
mation there that doesn=92t exist in the original protocol.  It should at l=
east be clarified what is expected.  Note that in 3.3.2.5 (Shared Risk Link=
 Group TLV) a different case of this shows up: the text seems to indicate t=
hat because there is no SRLG TLV in OSPD-TE, then this information wouldn=
=92t be available.  Again, please clarify if there may be procedures outsid=
e the scope of the document that could apply.
  5.  3.3.2.2 (MPLS Protocol Mask TLV)
     *   OLD>
   Generation of the MPLS Protocol Mask TLV is only valid for
   originators which have local link insight, like for example Protocol-
   IDs 'Static' or 'Direct' as per Table 2.  The 'MPLS Protocol Mask'
   TLV MUST NOT be included in NLRIs with protocol-IDs 'IS-IS L1', 'IS-
   IS L2', 'OSPFv2' or 'OSPFv3' as per Table 2.
     *   NEW>
     *
   Generation of the MPLS Protocol Mask TLV is only valid for
   originators which have local link insight, like for example Protocol-
   IDs 'Static' or 'Direct' as per Table 2.  The 'MPLS Protocol Mask'
   TLV MUST NOT be included in NLRIs with other protocol-Ids.
  6.  "LINK_STATE attribute=94 shows up in 3.3.2 and 3.3.3.  What is it?
  7.  In 3.3.1.1 (Node Flag Bits TLV) you included the ISIS Overload Bit, b=
ut didn=92t say anything about OSPFv3=92s R-bit or v6-bit; and in 3.3.3.1 (=
IGP Flags TLV) you included the IS-IS Up/Down Bit in this TLV, but I didn=
=92t see the OSPF DN-bit anywhere.  Are these opportunities to reuse the sa=
me bit with a more generic definition while covering a similar option in OS=
PF?  I know you can=92t cover all the options, but these two are well-known=
 and seem low hanging fruit.
  8.  6.2.5.  (Performance Management)  It might be nice to include updates=
/second as one of the performance indicators.
  9.  Section 8 (Security Considerations) "The principal attack a consumer =
may apply is to attempt to start multiple sessions either sequentially or s=
imultaneously.=94  Isn=92t this an attack that any other node can try?  Why=
 limit the discussion only to consumers?
  10. Looking at the references, it seems to me that the following changes =
could be made:
     *   Make Informative: RFC1918
     *   Make Normative: I-D.ietf-idr-error-handling
  11. Curious question:  When encoding a =93normal=94 size node using BGP-L=
S, what is the resulting size of the UPDATE?

Nits:

  1.  3.2: s/'Static' protocol types/=91Static configuration' protocol type=
s     Again in 3.3.2.2.
  2.  3.2.1 and 6.2.3 : What does "Paragraph 2=94 refer to?
  3.  3.2.1.2: =93mandatory TLV in all three types of NLRIs=94  I assume yo=
u=92re referring to Node, Link and Prefix NLRIs, right?  However, it is con=
fusing because there are in fact 4 types defined.  Please correct.
  4.  3.2.1.4: =93IGP Router ID=85mandatory TLV=94  Should be sub-TLV.
  5.  3.2.3.1: "The Route Type TLV allows to discrimination of these advert=
isements./The Route Type TLV allows the discrimination of these advertiseme=
nts.
  6.  3.3.2.2: Please be consistent in the name.  Is it =93MPLS Protocol Ma=
sk TLV=94 or just =93MPLS Protocol TLV=94?
  7.  The description of the example in 3.7 is easier to read (because of t=
he formatting) than the one in 3.6.  It would be nice to be consistent.
  8.  3.8 seems to be a better example of simply ships in the night than mi=
gration as the emphasis is put on identifying the common links of the two p=
rocesses.
  9.  4.1 s/"see" the full topology of AS/"see" the full topology of AS2

--_000_D17ED917B07E9aretanaciscocom_
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<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
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Authors:</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Hi!</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I just finished reading this draft. &nbsp;There are a couple of things I wo=
uld like to talk about before moving it forward (=93Major=94 below). &nbsp;=
I also have a number of minor comments and some nits.</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Alia had already produced an AD review [<a href=3D"https://www.ietf.org/mai=
l-archive/web/idr/current/msg14146.html">https://www.ietf.org/mail-archive/=
web/idr/current/msg14146.html</a>], but I didn=92t see any follow up. &nbsp=
;Our comments don=92t fully overlap, so I expect
 both sets to be addressed. &nbsp;&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Also, during the IETF Last Call some comments came in, but none of the auth=
ors replied, including comments from IANA. &nbsp;Please address those as we=
ll.</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks!</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Alvaro.</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif">Major:</font></div>
<ol style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<font face=3D"Calibri,sans-serif">Section 5 (IANA Considerations)</font>
<ul>
<li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
I didn=92t see this comment as part of IANA=92s review, but the text about =
the Designated Experts should be clarified. &nbsp;There is some guidance in=
 RFC5226.</li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-=
serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">&quot;</font><span style=3D"font-family: =
Calibri, sans-serif;">Note to RFC Editor: this section may be removed on pu=
blication as an R</span><font face=3D"Calibri,sans-serif">FC.=94 &nbsp;The =
IANA considerations section should remain because
 there are in fact considerations there.</font></li><li><font face=3D"Calib=
ri,sans-serif">I would like to have Designated Experts in place soon. &nbsp=
;It seems to me that having 2 of the authors volunteer (primary and backup)=
 would be ideal. &nbsp;Please let me&nbsp;knot if you want to do it.</font>=
</li></ul>
</li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; fo=
nt-size: 14px;">
6.1.2 (Installation and Initial Setup): [default] &quot;maximum rate at whi=
ch Link-State NLRIs will be advertised/withdrawn from neighbors is set to 2=
00 updates per second.=94 &nbsp;Where did the number come from? &nbsp;It do=
es look very big. &nbsp;Are you assuming just changes
 or startup as well? &nbsp;One of my concerns is the interaction with other=
 BGP stuff (like regular routing!). &nbsp;In fact, in 6.1.5 (Impact on Netw=
ork Operation) you wrote: &nbsp;&quot;Frequency of Link-State NLRI updates =
could interfere with regular BGP prefix distribution.
 &nbsp;A network operator MAY use a dedicated Route-Reflector infrastructur=
e to distribute Link-State NLRIs.=94 &nbsp;Why not use SHOULD? &nbsp;If the=
re may be significant operational impact I think you should be more direct =
with the guidance.</li><li><font face=3D"Calibri,sans-serif">6.2.2 (Fault M=
anagement). &quot;If an implementation of BGP-LS detects a malformed attrib=
ute, then it SHOULD use the 'Attribute Discard=92&nbsp;action..=94 &nbsp;Do=
esn't this mean that the information may be useless, completely missing, or
 in the best case incomplete? &nbsp;Aren=92t we better off just resetting t=
he session or at least requesting a route refresh?</font></li></ol>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<div><br>
</div>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif">Minor:</font></div>
<ol>
<li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">3.1 (TLV Format): &quot;</font><fo=
nt face=3D"Calibri,sans-serif">Unrecognized types are&nbsp;preserved and pr=
opagated.=94 &nbsp;This statement sounds necessary for
 interoperability and the correct propagation of the information. &nbsp;Sho=
uld it have a&nbsp;=93MUST=94 in it?</font></li><li style=3D"color: rgb(0, =
0, 0); font-family: Calibri, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">3.1 (TLV Format): =93If there are more TL=
Vs of the same type, then the TLVs MUST be ordered in ascending order of th=
e TLV value within the TLVs with the same type.=94 &nbsp;Ordered by value? =
&nbsp;How is that done? &nbsp;Some TLVs contain sub-TLVs
 in the value field, but others don=92t.</font></li><li><font face=3D"Calib=
ri,sans-serif">3.2.1 (Node Descriptors): &nbsp;The BGP-LS Identifier is use=
d, but it is defined later in 3.2.1.4. &nbsp;Please add a reference so that=
 it is not mistaken for the&nbsp;=93Identifier=94 (in the NLRIs themselves =
in Section 3.2).</font></li><li><font face=3D"Calibri,sans-serif">3.3.2 (Li=
nk Attribute TLVs): &nbsp;The attributes used are defined for ISIS, some ar=
e easily derived from OSPF, but other don=92t map to anything. &nbsp;For ex=
ample,&nbsp;=93administrative group (color)=94. &nbsp;How are these types o=
f undefined parameters
 in OSPF figured out? &nbsp;I suspect the easy answer is to just say that i=
t is out of scope, but the fact remains that there can be information there=
 that&nbsp;doesn=92t exist in the original protocol. &nbsp;It should at lea=
st be clarified what is expected. &nbsp;Note that in 3.3.2.5
 (Shared Risk Link Group TLV) a different case of this shows up: the text&n=
bsp;seems to indicate that because there is no SRLG TLV in OSPD-TE, then th=
is&nbsp;information wouldn=92t be available. &nbsp;Again, please clarify if=
 there may be procedures outside the scope of the
 document that could apply.</font></li><li><font face=3D"Calibri,sans-serif=
">3.3.2.2 (MPLS Protocol Mask TLV)</font>
<ul>
<li><font face=3D"Calibri,sans-serif">OLD&gt;&nbsp;
<div>&nbsp; &nbsp;Generation of the MPLS Protocol Mask TLV is only valid fo=
r</div>
<div>&nbsp; &nbsp;originators which have local link insight, like for examp=
le Protocol-</div>
<div>&nbsp; &nbsp;IDs 'Static' or 'Direct' as per Table 2. &nbsp;The 'MPLS =
Protocol Mask'</div>
<div>&nbsp; &nbsp;TLV MUST NOT be included in NLRIs with protocol-IDs 'IS-I=
S L1', 'IS-</div>
<div>&nbsp; &nbsp;IS L2', 'OSPFv2' or 'OSPFv3' as per Table 2.</div>
</li><li><font face=3D"Calibri,sans-serif">NEW&gt;</font></li><li><font fac=
e=3D"Calibri,sans-serif">
<div>&nbsp; &nbsp;Generation of the MPLS Protocol Mask TLV is only valid fo=
r</div>
<div>&nbsp; &nbsp;originators which have local link insight, like for examp=
le Protocol-</div>
<div>&nbsp; &nbsp;IDs 'Static' or 'Direct' as per Table 2. &nbsp;The 'MPLS =
Protocol Mask'</div>
<div>&nbsp; &nbsp;TLV MUST NOT be included in NLRIs with other protocol-Ids=
.</div>
</font></font></li></ul>
</li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; fo=
nt-size: 14px;">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-=
size: 14px; font-style: normal; font-weight: normal; text-decoration: none;=
">&quot;</span><font face=3D"Calibri,sans-serif">LINK_STATE attribute=94 sh=
ows up in 3.3.2 and 3.3.3. &nbsp;What is it?</font></li><li style=3D"color:=
 rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">In 3.3.1.1 (Node Flag Bits TLV) you inclu=
ded the ISIS Overload Bit, but didn=92t say&nbsp;anything about OSPFv3=92s =
R-bit or v6-bit; and in 3.3.3.1 (IGP Flags TLV) you included the&nbsp;</fon=
t><font face=3D"Calibri,sans-serif" style=3D"color: rgb(0, 0, 0); font-fami=
ly: Calibri, sans-serif; font-size: 14px;">IS-IS
 Up/Down Bit in this TLV, but&nbsp;I didn=92t see the OSPF DN-bit anywhere.=
 &nbsp;Are these opportunities to reuse the same bit with a more generic de=
finition&nbsp;while covering a similar option in OSPF? &nbsp;I know you can=
=92t cover all the options, but these two are well-known
 and seem low hanging fruit.</font></li><li style=3D"color: rgb(0, 0, 0); f=
ont-family: Calibri, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">6.2.5. &nbsp;(Performance Management) &nb=
sp;It might be nice to include updates/second as one of the performance ind=
icators.</font></li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri,=
 sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">Section&nbsp;8 (Security Considerations) =
&quot;</font><span style=3D"font-family: Calibri, sans-serif;">The principa=
l attack a consumer&nbsp;</span><span style=3D"font-family: Calibri, sans-s=
erif;">may apply is to attempt to start multiple sessions
 either&nbsp;</span><font face=3D"Calibri,sans-serif">sequentially or simul=
taneously.=94 &nbsp;Isn=92t this an attack that any other node can try? &nb=
sp;Why limit the discussion only to consumers?</font></li><li style=3D"colo=
r: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">Looking at the references, it seems to me=
 that the following changes could be made:</font>
<ul style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<font face=3D"Calibri,sans-serif">Make Informative:&nbsp;</font><font face=
=3D"Calibri,sans-serif">RFC1918</font></li><li><font face=3D"Calibri,sans-s=
erif" style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-=
size: 14px;">Make Normative:&nbsp;</font><font face=3D"Calibri,sans-serif">=
I-D.ietf-idr-error-handling</font></li></ul>
</li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; fo=
nt-size: 14px;">
Curious question: &nbsp;When encoding a =93normal=94 size node using BGP-LS=
, what is the resulting size of the UPDATE?</li></ol>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif"><br>
</font></div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif">Nits:</font></div>
<ol style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-si=
ze: 14px;">
<font face=3D"Calibri,sans-serif">3.2: s/</font><font face=3D"Calibri,sans-=
serif">'Static' protocol types/</font><font face=3D"Calibri,sans-serif">=91=
Static configuration' protocol types &nbsp; &nbsp; Again in 3.3.2.2.</font>=
</li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; fo=
nt-size: 14px;">
<font face=3D"Calibri,sans-serif">3.2.1 and 6.2.3 : What does &quot;</font>=
<font face=3D"Calibri,sans-serif">Paragraph 2=94 refer to?</font></li><li s=
tyle=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 1=
4px;">
<font face=3D"Calibri,sans-serif">3.2.1.2:&nbsp;=93mandatory TLV in all&nbs=
p;</font><font face=3D"Calibri,sans-serif">three types of NLRIs=94 &nbsp;I =
assume you=92re referring to Node, Link and Prefix NLRIs, right? &nbsp;Howe=
ver, it is confusing because there are in fact 4 types defined.
 &nbsp;Please correct.</font></li><li style=3D"color: rgb(0, 0, 0); font-fa=
mily: Calibri, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">3.2.1.4:&nbsp;=93IGP Router ID</font><fon=
t face=3D"Calibri,sans-serif">=85mandatory&nbsp;TLV=94 &nbsp;Should be sub-=
TLV.</font></li><li style=3D"color: rgb(0, 0, 0); font-family: Calibri, san=
s-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">3.2.3.1: &quot;</font><span style=3D"font=
-family: Calibri, sans-serif;">The Route Type TLV allows to discrimination =
of&nbsp;</span><span style=3D"font-family: Calibri, sans-serif;">these adve=
rtisements./</span><span style=3D"font-family: Calibri, sans-serif;">The
 Route Type TLV allows the discrimination of&nbsp;</span><span style=3D"fon=
t-family: Calibri, sans-serif;">these advertisements.</span></li><li style=
=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14px;=
">
<font face=3D"Calibri,sans-serif">3.3.2.2: Please be consistent in the name=
. &nbsp;Is it&nbsp;=93MPLS Protocol Mask TLV=94 or just&nbsp;=93MPLS Protoc=
ol TLV=94?</font></li><li style=3D"color: rgb(0, 0, 0); font-family: Calibr=
i, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">The description of the example in 3.7 is =
easier to read (because of the formatting) than the one in 3.6. &nbsp;It wo=
uld be nice to be consistent.</font></li><li style=3D"color: rgb(0, 0, 0); =
font-family: Calibri, sans-serif; font-size: 14px;">
<font face=3D"Calibri,sans-serif">3.8 seems to be a better example of simpl=
y ships in the night than migration as the emphasis is put on identifying t=
he common links of the two processes.</font></li><li><font face=3D"Calibri,=
sans-serif" style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif;=
 font-size: 14px;">4.1 s/</font><font face=3D"Calibri,sans-serif">&quot;see=
&quot; the full topology of AS/&quot;see&quot; the full topology of AS2</fo=
nt></li></ol>
</body>
</html>

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To: Daniel Walton <dwalton@cumulusnetworks.com>
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On Fri, May 15, 2015 at 09:26:16PM -0400, Daniel Walton wrote:
> https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00
> 
> Feedback is welcome. There is a "Sectino" typo in the intro, will clean
> that up.

At John's request, here is a short list of things I find problematic about
this draft.  Note that this isn't a statement of my opinion on the value of
it.

1. The draft really should require the ext-opt-param feature.  It's too easy
for a hostname to eat all of the capability space.
2. You can't rely on the hostname in question being useful for DNS purposes.
The IPv6 link local peering is just one example of why.
3. The specification should offer some guidance about what to do when you
have multiple peering sessions with a given router.
4. The specification should offer some guidance about what to do when two
distinct routers use the same name.

Note that 3 and 4 can be distinguished based on BGP Identifier.

As for the UTF-8 issue, it's the right thing to do and as much as it makes
things a real mess, the draft wouldn't progress in IESG without I18N issues
being dealt with.

That said, carefully consider what you expect to do with the names returned
by such a feature.  Just because you can print the things, does that mean
the input portion of your UI can accept it?

-- Jeff (best I can do with anything that isn't Latin-1 is cut and paste)


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Draft-ietf-idr-flowspec-redirecdt-rt-bis-04.txt has completed the extended
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Sue Hares and John Scudder 


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From nobody Wed May 20 08:42:00 2015
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Date: Wed, 20 May 2015 16:42:02 +0100
From: Rob Shakir <rjs@rob.sh>
To: "=?utf-8?Q?draft-ietf-idr-ls-distribution=40tools.ietf.org?=" <draft-ietf-idr-ls-distribution@tools.ietf.org>,  "Alvaro Retana (aretana)" <aretana@cisco.com>
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Subject: Re: [Idr] AD Review of draft-ietf-idr-ls-distribution
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--555cab4a_438606bd_b56b
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On 19 May 2015 at 22:58:10, Alvaro Retana (aretana) (aretana=40cisco.com)=
 wrote:
6.2.2 (=46ault Management). =22If an implementation of BGP-LS detects a m=
alformed attribute, then it SHOULD use the 'Attribute Discard=E2=80=99=C2=
=A0action..=E2=80=9D =C2=A0Doesn't this mean that the information may be =
useless, completely missing, or in the best case incomplete=3F =C2=A0Aren=
=E2=80=99t we better off just resetting the session or at least requestin=
g a route refresh=3F
Alvaro,

Sorry =E2=80=94 I completely disagree here. If we consider that this info=
rmation might be sharing a BGP session with another A=46I,SA=46I that is =
significantly more critical to network operation, this kind of meta data =
SHOULD NOT impact that other A=46I,SA=46I=E2=80=99s routing.

Based on this, session reset as a default behaviour is really not accepta=
ble to me from an operational perspective.

=46or the record, I agree with the other comments about scaling/isolation=
 - and argued these to start with the authors. Ultimately, if we are goin=
g to have the ability for BGP-LS to share sessions with other routing inf=
ormation, then robustness is something that has to be a critical concern.=


Kind regards,

r.


--555cab4a_438606bd_b56b
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<html><head><style>body=7Bfont-family:Menlo,Arial;font-size:13px=7D</styl=
e></head><body style=3D=22word-wrap: break-word; -webkit-nbsp-mode: space=
; -webkit-line-break: after-white-space;=22><div id=3D=22bloop=5Fcustomfo=
nt=22 style=3D=22font-family:Menlo,Arial;font-size:13px; color: rgba(0,0,=
0,1.0); margin: 0px; line-height: auto;=22>On 19 May 2015 at 22:58:10, Al=
varo Retana (aretana) (<a href=3D=22mailto:aretana=40cisco.com=22>aretana=
=40cisco.com</a>) wrote:</div> <div><blockquote type=3D=22cite=22 class=3D=
=22clean=5Fbq=22 style=3D=22color: rgb(0, 0, 0); font-family: Menlo, Aria=
l; font-size: 13px; font-style: normal; font-variant: normal; font-weight=
: normal; letter-spacing: normal; line-height: normal; orphans: auto; tex=
t-align: start; text-indent: 0px; text-transform: none; white-space: norm=
al; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;=22><=
span><div><ol style=3D=22color: rgb(0, 0, 0); font-family: Calibri, sans-=
serif; font-size: 14px; font-style: normal; font-variant: normal; font-we=
ight: normal; letter-spacing: normal; line-height: 21px; orphans: auto; t=
ext-align: start; text-indent: 0px; text-transform: none; white-space: no=
rmal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;=22=
><li><font face=3D=22Calibri,sans-serif=22>6.2.2 (=46ault Management). =22=
If an implementation of BGP-LS detects a malformed attribute, then it SHO=
ULD use the 'Attribute Discard=E2=80=99&nbsp;action..=E2=80=9D &nbsp;Does=
n't this mean that the information may be useless, completely missing, or=
 in the best case incomplete=3F &nbsp;Aren=E2=80=99t we better off just r=
esetting the session or at least requesting a route refresh=3F</font></li=
></ol></div></span></blockquote></div><p>Alvaro,</p><p>Sorry =E2=80=94 I =
completely disagree here. If we consider that this information might be s=
haring a BGP session with another A=46I,SA=46I that is significantly more=
 critical to network operation, this kind of meta data SHOULD NOT impact =
that other A=46I,SA=46I=E2=80=99s routing.</p><p>Based on this, session r=
eset as a default behaviour is really not acceptable to me from an operat=
ional perspective.</p><p>=46or the record, I agree with the other comment=
s about scaling/isolation - and argued these to start with the authors. U=
ltimately, if we are going to have the ability for BGP-LS to share sessio=
ns with other routing information, then robustness is something that has =
to be a critical concern.</p><p>Kind regards,</p><p>r.</p><div></div></bo=
dy></html>
--555cab4a_438606bd_b56b--


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From: "Alvaro Retana (aretana)" <aretana@cisco.com>
To: Rob Shakir <rjs@rob.sh>
Thread-Topic: [Idr] AD Review of draft-ietf-idr-ls-distribution
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Date: Wed, 20 May 2015 13:19:05 -0400
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From: Daniel Walton <dwalton@cumulusnetworks.com>
To: Jeffrey Haas <jhaas@pfrc.org>
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Cc: idr wg <idr@ietf.org>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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--001a114089c4caf1f70516869f1d
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Hi Jeff,
Thank you for the feedback.  Questions/comments inline...

On Wed, May 20, 2015 at 10:42 AM, Jeffrey Haas <jhaas@pfrc.org> wrote:

> On Fri, May 15, 2015 at 09:26:16PM -0400, Daniel Walton wrote:
> > https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00
> >
> > Feedback is welcome. There is a "Sectino" typo in the intro, will clean
> > that up.
>
> At John's request, here is a short list of things I find problematic about
> this draft.  Note that this isn't a statement of my opinion on the value of
> it.
>
> 1. The draft really should require the ext-opt-param feature.  It's too
> easy
> for a hostname to eat all of the capability space.
>

I think requiring ext-opt-param should be fine.  Agreed that if someone
configures a 255 character hostname and 255 character domain name that
would be problematic with the current draft.



> 2. You can't rely on the hostname in question being useful for DNS
> purposes.
> The IPv6 link local peering is just one example of why.
>

The hostnames learned should only be used for bgp UI purposes, we have no
plans to try to auto-populate DNS or anything like that.  We will add some
text to clarify this.


3. The specification should offer some guidance about what to do when you
> have multiple peering sessions with a given router.
> 4. The specification should offer some guidance about what to do when two
> distinct routers use the same name.
>
> Note that 3 and 4 can be distinguished based on BGP Identifier.
>

Ack.  We can put in a section of sample show command output with some
possible ways to handle these scenarios.  How one decides to display this
will obviously be implementation specific but some examples can't hurt.

Daniel


> As for the UTF-8 issue, it's the right thing to do and as much as it makes
> things a real mess, the draft wouldn't progress in IESG without I18N issues
> being dealt with.
>
> That said, carefully consider what you expect to do with the names returned
> by such a feature.  Just because you can print the things, does that mean
> the input portion of your UI can accept it?
>
> -- Jeff (best I can do with anything that isn't Latin-1 is cut and paste)
>

--001a114089c4caf1f70516869f1d
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Jeff,<div>Thank you for the feedback.=C2=A0 Questions/c=
omments inline...<br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Wed, May 20, 2015 at 10:42 AM, Jeffrey Haas <span dir=3D"ltr">&lt;<a=
 href=3D"mailto:jhaas@pfrc.org" target=3D"_blank">jhaas@pfrc.org</a>&gt;</s=
pan> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0p=
x 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-lef=
t-style:solid;padding-left:1ex"><div class=3D""><div class=3D"h5">On Fri, M=
ay 15, 2015 at 09:26:16PM -0400, Daniel Walton wrote:<br>
&gt; <a href=3D"https://tools.ietf.org/html/draft-walton-bgp-hostname-capab=
ility-00" target=3D"_blank">https://tools.ietf.org/html/draft-walton-bgp-ho=
stname-capability-00</a><br>
&gt;<br>
&gt; Feedback is welcome. There is a &quot;Sectino&quot; typo in the intro,=
 will clean<br>
&gt; that up.<br>
<br>
</div></div>At John&#39;s request, here is a short list of things I find pr=
oblematic about<br>
this draft.=C2=A0 Note that this isn&#39;t a statement of my opinion on the=
 value of<br>
it.<br>
<br>
1. The draft really should require the ext-opt-param feature.=C2=A0 It&#39;=
s too easy<br>
for a hostname to eat all of the capability space.<br></blockquote><div><br=
></div><div>I think requiring ext-opt-param should be fine.=C2=A0 Agreed th=
at if someone configures a 255 character hostname and 255 character domain =
name that would be problematic with the current draft.</div><div><br></div>=
<div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-l=
eft-style:solid;padding-left:1ex">
2. You can&#39;t rely on the hostname in question being useful for DNS purp=
oses.<br>
The IPv6 link local peering is just one example of why.<br></blockquote><di=
v><br></div><div>The hostnames learned should only be used for bgp UI purpo=
ses, we have no plans to try to auto-populate DNS or anything like that.=C2=
=A0 We will add some text to clarify this.</div><div>=C2=A0</div><div><br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bo=
rder-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:so=
lid;padding-left:1ex">
3. The specification should offer some guidance about what to do when you<b=
r>
have multiple peering sessions with a given router.<br>
4. The specification should offer some guidance about what to do when two<b=
r>
distinct routers use the same name.<br>
<br>
Note that 3 and 4 can be distinguished based on BGP Identifier.<br></blockq=
uote><div><br></div><div>Ack.=C2=A0 We can put in a section of sample show =
command output with some possible ways to handle these scenarios.=C2=A0 How=
 one decides to display this will obviously be implementation specific but =
some examples can&#39;t hurt.</div><div><br></div><div>Daniel</div><div><br=
></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:=
solid;padding-left:1ex">
<br>
As for the UTF-8 issue, it&#39;s the right thing to do and as much as it ma=
kes<br>
things a real mess, the draft wouldn&#39;t progress in IESG without I18N is=
sues<br>
being dealt with.<br>
<br>
That said, carefully consider what you expect to do with the names returned=
<br>
by such a feature.=C2=A0 Just because you can print the things, does that m=
ean<br>
the input portion of your UI can accept it?<br>
<br>
-- Jeff (best I can do with anything that isn&#39;t Latin-1 is cut and past=
e)<br>
</blockquote></div><br></div></div></div>

--001a114089c4caf1f70516869f1d--


From nobody Wed May 20 19:39:52 2015
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Nick Hilliard <nick@foobar.org>, Daniel Walton <dwalton@cumulusnetworks.com>, idr wg <idr@ietf.org>, Dinesh Dutt <ddutt@cumulusnetworks.com>
Thread-Topic: [Idr] draft-walton-bgp-hostname-capability-00
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Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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Hi Nick,=20

> -----Original Message-----
> From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Nick Hilliard
> Sent: Tuesday, May 19, 2015 7:47 PM
> To: Daniel Walton; idr wg; Dinesh Dutt
> Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
>=20
> On 16/05/2015 02:26, Daniel Walton wrote:
> > https://tools.ietf.org/html/draft-walton-bgp-hostname-capability-00
> >
> > Feedback is welcome. There is a "Sectino" typo in the intro, will
> > clean that up.
>=20
> I like this idea because it makes my life as an operator easier.
>=20
> There is a similar option in ISIS for transmitting hostnames in ISIS.  Th=
is is
> operationally useful for a wide variety of purposes.
>=20
> I would suggest that it would be more appropriate to define a generic tex=
t bgp
> capability along the lines of draft-ietf-idr-advisory, and define the BGP
> hostname as a subtype rather than using a dedicated bgp hostname capabili=
ty.

Totally agree with this, and actually the "BGP Session Information Capabili=
ty" as defined in draft-dong-idr-fsm-subcode-00 (only in the -00 version) c=
an meet your requirement, in which the "peer description" is just one of th=
e subtypes. This part was splitted out from later versions of draft-fsm-sub=
code, but this mechanism can be used if such information needs to be exchan=
ged.

Best regards,
Jie

>=20
> Nick
>=20
>=20
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr


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This begins a 2 week Working Group adoption for
draft-wang-idr-eag-distribution.   You can find the draft at: 

 

http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/

 

This draft proposes a new BGP-LS 

 

   As MPLS-TE network grows, administrative Groups advertised as a
   fixed-length 32-bit Bitmask is quite constraining.  "Extended
   Administrative Group" IGP TE extensions sub-TLV defined in [RFC7308
<https://tools.ietf.org/html/rfc7308> ]
   is introduced to provide for additional administrative groups (link
   colors) beyond the current limit of 32.

 

 

   The EAG TLV is used in addition to the Administrative Groups when a
   node wants to advertise more than 32 colors for a link.  The EAG TLV
   is optional.  The format and semantics of the 'value' fields in EAG
   TLVs correspond to the format and semantics of value fields in IGP
   extension sub-TLVs, defined in [RFC7308
<https://tools.ietf.org/html/rfc7308> ].
 
   +------------+---------------------+--------------+-----------------+
   |  TLV Code  |     Description     |     IS-IS    |   Defined in:   |
   |    Point   |                     |  TLV/Sub-TLV |                 |
   +------------+---------------------+--------------+-----------------+
   |    xxxx    |       Extended      |     22/xx    |    [RFC7308
<https://tools.ietf.org/html/rfc7308> ]    |
   |            |      Admin Group    |              |                 |
   +------------+---------------------+--------------+-----------------+

 

Please in your comments include "support" or "no support" for this draft. 

 

Sue Hares and John Scudder. 


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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>This =
begins a 2 week Working Group adoption for =
draft-wang-idr-eag-distribution.&nbsp;&nbsp; You can find the draft at: =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><a =
href=3D"http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/"=
>http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/</a><o:p=
></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>This draft proposes a new BGP-LS <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; As MPLS-TE network grows, =
administrative Groups advertised as a<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; fixed-length 32-bit Bitmask is quite =
constraining.&nbsp; &quot;Extended<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; Administrative Group&quot; IGP TE =
extensions sub-TLV defined in [<a =
href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended =
Administrative Groups in =
MPLS-TE&quot;">RFC7308</a>]<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; is introduced to provide for =
additional administrative groups (link<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; colors) beyond the current limit of =
32.<o:p></o:p></span></pre><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; The EAG TLV is used in addition to =
the Administrative Groups when a<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; node wants to advertise more than 32 =
colors for a link.&nbsp; The EAG TLV<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; is optional.&nbsp; The format and =
semantics of the 'value' fields in EAG<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; TLVs correspond to the format and =
semantics of value fields in IGP<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; extension sub-TLVs, defined in [<a =
href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended =
Administrative Groups in =
MPLS-TE&quot;">RFC7308</a>].<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'><o:p>&nbsp;</o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
+------------+---------------------+--------------+-----------------+<o:p=
></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; |&nbsp; TLV Code&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp; Description&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp; IS-IS&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp; Defined =
in:&nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; Point&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp; TLV/Sub-TLV =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
+------------+---------------------+--------------+-----------------+<o:p=
></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; =
xxxx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Extended&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; =
22/xx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; [<a =
href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended =
Administrative Groups in MPLS-TE&quot;">RFC7308</a>]&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Admin =
Group&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
+------------+---------------------+--------------+-----------------+<o:p=
></o:p></span></pre><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Please in your comments include &#8220;support&#8221; =
or &#8220;no support&#8221; for this draft. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sue Hares =
and John Scudder. <o:p></o:p></p></div></body></html>
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Archived-At: <http://mailarchive.ietf.org/arch/msg/idr/TXkTKtgZ1loRhxFbLUJN8XqeFFs>
Subject: [Idr] 2 Week WG LC for draft-ietf-idr-rtc-no-rt-00 (5/22 to 6/5)
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This is a 2 week WG LC for draft-ietf-idr-rtc-no-rt-00.   You can find the
draft at: 

 

http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/

 

This draft looks to clarify the default setting of the RTC when the extended
community does not carry an RT in the extended communities. 

 

A full description is: 

 

   BGP routes sometimes carry an "Extended Communities" path attribute.

   An Extended Communities path attribute can contain one or more "Route

   Targets" (RTs).  By means of a procedure known as "RT Constrained

   Distribution" (RTC), a BGP speaker can send BGP UPDATE messages that

   express its interest in a particular set of RTs.  Generally, RTC has

   been applied only to address families whose routes always carry RTs.

   When RTC is applied to such an address family, a BGP speaker

   expressing its interest in a particular set of RTs is indicating that

   it wants to receive all and only the routes of that address family

   that have at least one of the RTs of interest.  However, there are

   scenarios in which the originator of a route chooses not to include

   any RTs at all, assuming that the distribution of a route with no RTs

   at all will be unaffected by RTC.  This has led to interoperability

   problems in the field, where the originator of a route assumes that

   RTC will not affect the distribution of the route, but intermediate

   BGP speakers refuse to distribute that route because it does not

   carry any RT of interest.  The purpose of this document is to clarify

   the effect of the RTC mechanism on routes that do not have any RTs.

 

Please comment if this clarification will aid your BGP Deployments, and if
you think this draft is ready for WG LC. 

 

Sue Hares 


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	{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>This is a =
2 week WG LC for draft-ietf-idr-rtc-no-rt-00.&nbsp;&nbsp; You can find =
the draft at: <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/">http:/=
/datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/</a><o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>This draft =
looks to clarify the default setting of the RTC when the extended =
community does not carry an RT in the extended communities. =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>A full description is: <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; =
BGP routes sometimes carry an &quot;Extended Communities&quot; path =
attribute.<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; An Extended =
Communities path attribute can contain one or more =
&quot;Route<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; =
Targets&quot; (RTs).&nbsp; By means of a procedure known as &quot;RT =
Constrained<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; =
Distribution&quot; (RTC), a BGP speaker can send BGP UPDATE messages =
that<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; express its =
interest in a particular set of RTs.&nbsp; Generally, RTC =
has<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; been applied only to =
address families whose routes always carry RTs.<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; When RTC is applied to such an address =
family, a BGP speaker<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; =
expressing its interest in a particular set of RTs is indicating =
that<o:p></o:p></p><p class=3DMsoNormal>&nbsp;&nbsp; it wants to receive =
all and only the routes of that address family<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; that have at least one of the RTs of =
interest.&nbsp; However, there are<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; scenarios in which the originator of a =
route chooses not to include<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; any RTs at all, assuming that the =
distribution of a route with no RTs<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; at all will be unaffected by RTC.&nbsp; =
This has led to interoperability<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; problems in the field, where the =
originator of a route assumes that<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; RTC will not affect the distribution of =
the route, but intermediate<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; BGP speakers refuse to distribute that =
route because it does not<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; carry any RT of interest.&nbsp; The =
purpose of this document is to clarify<o:p></o:p></p><p =
class=3DMsoNormal>&nbsp;&nbsp; the effect of the RTC mechanism on routes =
that do not have any RTs.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Please =
comment if this clarification will aid your BGP Deployments, and if you =
think this draft is ready for WG LC. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sue Hares =
<o:p></o:p></p></div></body></html>
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-nh-cost-02.txt
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On 18/05/2015 08:46, iLya Varlashkin wrote:
> Yes, RR will calculate best path per client, that’s the whole idea. This
> has been discussed with previous versions of this draft as well as in
> regards to draft-ietf-idr-bgp-optimal-route-reflection (ORR). In fact
> ORR draft provides the foundation (per client calculations) while this
> draft provides means of conveying next-hop cost information.
> 
> Also, section 3 of draft-ietf-idr-bgp-nh-cost-02 does say that NHIB
> information is used instead of speaker’s own IGP cost.

ok cool. this addresses any concerns I have about the draft.

Nick


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Date: Fri, 22 May 2015 13:29:04 +0000
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Cc: "idr@ietf. org" <idr@ietf.org>
Subject: Re: [Idr] I-D Action: draft-ietf-idr-bgp-nh-cost-02.txt
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I notice this version is a big update compared to previous versions =96 =
you've abandoned NH-SAFI and are using BGP-LS instead. I personally have =
no problem with this change, but considering it's a working group draft, =
I think it would be a good idea for the authors to provide the WG with a =
summary of the motivation for the change.

Thanks,

=96 John

On May 16, 2015, at 5:58 AM, internet-drafts@ietf.org wrote:

>=20
> A New Internet-Draft is available from the on-line Internet-Drafts =
directories.
> This draft is a work item of the Inter-Domain Routing Working Group of =
the IETF.
>=20
>        Title           : Carrying next-hop cost information in BGP
>        Authors         : Ilya Varlashkin
>                          Robert Raszuk
>                          Keyur Patel
>                          Manish Bhardwaj
>                          Serpil Bayraktar
> 	Filename        : draft-ietf-idr-bgp-nh-cost-02.txt
> 	Pages           : 10
> 	Date            : 2015-05-16
>=20
> Abstract:
>   BGPLS provides a mechanism by which Link state and traffic
>   engineering information can be collected from internal networks and
>   shared with external network routers using BGP.  BGPLS defines a new
>   Address Family to exchange this information using BGP.
>=20
>   BGP Optimal Route Reflection (ORR) provides a mechanism for a
>   centralized BGP Route Reflector to acheive requirements of a Hot
>   Potato Routing as described in Section 11 of [RFC4456].  Optimal
>   Route Reflection requires BGP ORR to overwrite the default IGP
>   location placement of the route reflector; which is used for
>   determining cost to the nexthop contained in the path.
>=20
>   This draft augments BGPLS and defines a new extensions to exchange
>   cost information to next-hops for the purpose of calculating best
>   path from a peer perspective rather than local BGP speaker own
>   perspective.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-nh-cost/
>=20
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-idr-bgp-nh-cost-02
>=20
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-idr-bgp-nh-cost-02
>=20
>=20
> Please note that it may take a couple of minutes from the time of =
submission
> until the htmlized version and diff are available at tools.ietf.org.
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
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Subject: Re: [Idr] [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05
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Bruno:=20

It is for the Chairs to discuss with the authors.  However, I hope that =
the authors will discuss these issues on list with you.  I think it is =
important to cover the major topics on list?   I will start a WG thread =
with these major issue.  The minor issues will be addressed offline with =
the authors.=20

Thank you for your careful review. =20

Sue Hares=20


-----Original Message-----
From: rtg-dir [mailto:rtg-dir-bounces@ietf.org] On Behalf Of =
bruno.decraene@orange.com
Sent: Friday, May 22, 2015 9:29 AM
To: rtg-ads@tools.ietf.org; idr-chairs@ietf.org; =
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Cc: rtg-dir@ietf.org; idr wg
Subject: [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05

Hello,

I have been selected as the Routing Directorate reviewer for this draft. =
The Routing Directorate seeks to review all routing or routing-related =
drafts as they pass through IETF last call and IESG review, and =
sometimes on special request. The purpose of the review is to provide =
assistance to the Routing ADs. For more information about the Routing =
Directorate, please see =
=E2=80=8Bhttp://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it =
would be helpful if you could consider them along with any other IETF =
Last Call comments that you receive, and strive to resolve them through =
discussion or by updating the draft.

Document: draft-ietf-idr-sla-exchange-05
Reviewer: Bruno Decraene
Review Date: 22/05/2015
IETF LC End Date: 02/03/2015
Intended Status: Standards Track

Summary:  I have significant concerns about this document and recommend =
that the Routing ADs discuss these issues further with the authors.=20

(Or the chairs as I see that this document has not yet been passed to =
the ADs)

Comments:
In general, the readability of the document is acceptable but could be =
improved, both from a language and technical precision point of view. =
(examples below).
However, there are some normative parts of this Standard Track =
specification that I could not understand.

Major:
M1) The Introduction states
"In a multi-vendor network, translating SLAs into technology-specific =
and vendor-specific configuration requires to consider specificities of =
each vendor.
There does not exist any standard protocol to translate SLA agreements =
into technical clauses and configurations and thus both the steps of out =
of band learning of negotiated SLA and provisioning them in a vendor =
specific language can be complex and error-prone."
  =20
- I guess some would use NETCONF/YANG to address this. It could be =
questioned why BGP has been preferred. Especially since:
	- in the VPN context (using a lot of QoS and the uses cases described =
in the document) many customer connections use static routing rather =
than eBGP. Hence this specification would not be enough to distribute =
SLA and would require another protocol.
	- QoS is only one part of the configuration effort. Why using different =
protocols to configure different aspects?

- This may be related to draft-l3vpn-service-yang and the L3VPN Service =
Model WG (l3sm). May be some form of coordination would be beneficial.

M2)"The exception is where a BGP speaker, in the middle of an update =
path to the destination AS, aggregates prefixes. We will refer this =
middle BGP speaker, that aggregates routes, as an Aggregator. Aggregator =
is then required to insert original NLRI details in the optional =
advertiser field"
	=09
If you refer to the use of AS_SET, RFC6472 recommends against the use of =
AS_SET. So, I'm not sure that there is a need to add complexity in this =
specification in order to handle route aggregation.
If removed, "section 5.3 Aggregator" may also be removed.
=09
M4)
 "Traffic Class Description
        Ascii Description of the Traffic Class"

Should it be UTF-8?

M5) SLA definition
 It would be good to define what a SLA is. Especially since this whole =
goal of the draft is to advertise SLA in BGP. Citing an individual draft =
[CPP] is not enough to have an agreed on definition, especially for a =
STD track RFC.
 Since QoS is not new in the IETF, there is probably a document defining =
it (or using a more popular terminology).
Looking in google, I don't really see matches for "IETF SLA" (outside of =
documents written by the authors).
Wikipedia seems to give a quite different definition, much wider than =
diffserv specific parameters which seems to be the main point of this =
BGP attribute:
"A service-level agreement (SLA) is a part of a service =
contract[disambiguation needed] where a service is formally defined. =
Particular aspects of the service - scope, quality, responsibilities - =
are agreed between the service provider and the service user. A common =
feature of an SLA is a contracted delivery time (of the service or =
performance). As an example, Internet service providers and telcos will =
commonly include service level agreements within the terms of their =
contracts with customers to define the level(s) of service being sold in =
plain language terms. In this case the SLA will typically have a =
technical definition in terms of mean time between failures (MTBF), mean =
time to repair or mean time to recovery (MTTR); identifying which party =
is responsible for reporting faults or paying fees; responsibility for =
various data rates; throughput; jitter; or similar measurable details.."

M6)
 "   Traffic Class Service (optional),
        16-bit          =3D type of the field
        variable-length =3D based on type of the service"
	=09
Please specify the content of the "variable-length" field.=20
If it only contains the Data Type of the IPFIX Information Elements, I'm =
not sure how the encoding supports, on the receiving side, the skipping =
of unknown ElementID.
Given that I also don't see an end to end negotiation channel for the =
BGP speaker to known the capabilities of the BGP receiver, I don't see =
how the specification will support the introduction of new Traffic Class =
Services in the future.=09

M7) NLRI
I don't see the relation between the QoS attribute and the NLRI.
- Is the QoS attribute only applicable to the NLRI advertised? If so =
what is the relation with destinationIP* advertised in the classifier =
Element? Should they be restricted to more specifics of the advertised =
NLRI?
- Also the QoS attribute may instruct "to drop entire BGP update message =
[Note that it is an indication to drop entire update message, not only =
QoS attribute]". This means that the NLRI will not be propagated, hence =
routed, anymore, which seems strange. To preserve routing of the NLRI, =
do the QoS attribute require to advertise a less specific prefix (with =
no QoS attribute) in addition? Or to use ADD_PATH to advertise the NLRI =
multiple times (with & without the QoS attribute).

Possibly same question for the relation between the QoS attribute and =
the AFI/SAFI of the BGP UPDATE. Is the QoS attribute to be understood in =
the context of the AFI/SAFI or not? e.g. if the classifier element is =
the ipDiffServCodePoint does it match all protocols or only the one of =
the AFI/SAFI?

M8) Error handling
Current text says that error handling MAY use attribute discard or MAY =
use treat as withdraw.
This seems underspecified as one implementation would be free to do =
nothing, while another could do session reset. This would open many BGP =
session reset in real networks.
Please specific what must be done.=20
Besides, other part of the document provides some more =
specific/different error handling. e.g. "If there are more than one such =
Traffic Classes present then advertised SLA parameters MUST be ignored."
Finally, the spec needs to define when the new attribute is considered =
malformed.
On an editorial note, I would prefer a dedicate section related to error =
handling.

M9) security consideration may require some discussion.
"There is a potential for mis-behaved AS to advertise wrong SLA, =
stealing identity of another AS."
Agreed. But there are probably other attack vectors (e.g. modifying the =
attribute during propagation, setting parameters to instruct BGP to drop =
the message (as this seems alllowed by the specification)...)

"This resembles to problems already identified and resolved, in the =
routing world, thru reverse path forwarding check."
"Resembles" is not enough. "Resolved" is probably a bit quick.

"One proposal, inline to RPF, to resolve such threats is to have each =
BGP speaker node, in the forwarding path, perform reverse path check on =
source AS."
If this is a specification, it should be described in the document =
(quickly citing it in the security section is not enough).
It's also a bit short in term of specification. e.g. I don't see "source =
AS" in the forwarding path (neither in the packet nor in the FIB)

"Since we expect these messages to originate and distributed in the =
managed network, there should not be any risks for identity theft."
If you restrict the use of this specification/ATTRIBUTE in "managed =
network", this needs to be clarified from the beginning (and not at this =
very end of the document), and the specification should take measure to =
ensure that this attribute is not received from/leaked outside of this =
"managed network".
Defining "managed network" may also help, especially since the =
proposition involves multiple ASes and multiple organisations.
(otherwise, you need to handle the case when this attribute is used =
outside of "managed network" and therefore consider the security =
implications)

M10) IANA section is under specified.
e.g. you should:
- states the name of the registry that you want to create or update.
- states the name of the new entries in existing registries.
- define all your new registries. (e.g. you don't have ones for new QoS =
TLV subtypes (defined in =C2=A73.1), Optional Advertised id TLV, SLA =
event Type...)
- define the registration policy of those new registries.

Reading RFC5226 may help.


Minor (some not so minor):
m1) From an editorial standpoint, the document may benefit from an =
english language review.
  - Some sentences are hard to parse (at least for me). e.g. "The need =
to exchange SLA parameters between domains (Automated Systems (AS)), =
where in use-cases described in this document, BGP is a suitable =
protocol for inter-domain exchange [RFC4271][RFC4364].
  - Adding a full point "." at the end of each sentence may help the =
parsing.
  - IMHO some sentences could be rewritten to improve readability. e.g.
  OLD:=20
        highest order bit (bit 0) -
            It defines if update message MUST be dropped (if set to 1)
            without updating routing information base, when this is the
            last BGP receiver from the list of destination ASes this
            attribute is announced to, or MUST announce (if set to 0)
            further to BGP peers
  NEW
        highest order bit (bit 0) -
			This flags defines how update message must be handled by the last BGP =
receiver in the list of destination ASes.
            If set (1) update message MUST be dropped without updating =
routing information base.
			If cleared (0) update message MUST be further advertised to BGP =
peers.
           =20
  On a side note, at this point in the document, it's not crystal clear =
what you mean by "update message". The QoS Attribute TLV? The QoS BGP =
attribute? The BGP UPDATE message? In general, in the document, please =
use the protocols names of the messages/fields.
  - "SLA sub-type specific value field details." I guess you mean =
:s/specific/specifies.=20
 =20
m2)
OLD: Remaining bits are currently unused and MUST be set to 0
NEW: The lower-order seven bits of the Attribute Flags octet are unused. =
 They MUST be zero when sent and MUST be ignored when received.=20
(Proposed text is a copy/past from RFC 4271. You are free to use another =
text but please specify the behaviour on the receiving side as we have =
seen BGP session reset in the Internet which a much clearer sentence.)

m3) That's not specific to this document, but I would find useful to =
have the related implementation report draft be referenced in the =
informative reference section.

m4) "sub type Length" Please specify exactly what part of the message is =
covered by the length (as some IETF spec use the length of the value =
field, while some other use the length of the type+length+value fields.
=20
m5) "32-bit source AS (Advertiser)" The word "advertiser" may be =
misleading. (cf draft-hares-idr-update-attrib-low-bits-fix). RFC 4271 =
uses "Originating speaker" (SIDR seems also to use "Origin".
Multiple occurrences in the draft.

m6)  "0 =3D ignore Source and Destination AS list from this Value field.
            Instead refer to Source and Destination AS as defined by BGP
            message"
I'm not sure what is meant by the second sentence. Please use the =
specific names of BGP messages and fields.

m7) "format of the SLA message"
Giving names and number to figures could be considered.
So does adding the memory axis:
    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
=09
=09
m8) 		=09
"    Optional advertiser id total len
        16-bit Source address identifier (optional)."
	=09
I read this as the field "Optional advertiser id total len" contains a =
16-bit Source address identifier.
While this field probably contain the length of "something". Please =
check/clarify.=20

m9)=20
    "Optional Advertiser id TLV
        4-bit type"
=09
You need to specify the size of the "Length" field. Especially since you =
introduce a somewhat unusual size of the "Type field" and some people =
may assume that the size of the "length" field is of the same size =
(4-bit), while some others may believe its the usual 1-octet. 	=09

m10)"    Destination AS count
        32-bit destination AS count to take variable length AS list."
I guess you mean:
number of destination ASes
This field indicates the number of destination AS present in the =
Destination AS list

m11) "SLA Id"
The text under "SLA Id" mixes text related to "SLA Id " and text related =
to  "Content". Please split the text.

m12) I don't see a description of the filed "Content as per SLA Event"

m13)  "    SLA Length
        12-bits"
Please specify what is covered/measured by this length field.	=09

m14)
"    Direction
        0x1 =3D incoming, from destination AS towards source AS
        0x2 =3D outgoing, from source AS towards destination AS"
I find the terms "incoming" and "outcoming" a bit misleading. e.g.
the direction "from source AS towards destination AS" seems to be:
- outgoing in the source AS
- ingoing in the destination AS
	=09
m15)    "Traffic Class Descr Length
        08-bit, size of the length"
proposition  :s/size of the length/ length of XXX

m16) In section 3, I don't see the specification of the REQUEST SLA even =
type.
At the end of the document, it's said that "discussion of REQUEST =
message, for this purpose or any other purpose, is considered out of the =
scope of this document." In which case, you should probably not specify =
a REQUEST SLA even type.
  =20
m19)
"Given IPFIX [RFC5102] has well defined identifier set for a large =
number of packet attributes, IPFIX IANA registry is =
"https://www.ietf.org/assignments/ipfix" chosen to specify packet =
classification attributes."
Sentence is hard to parse, which is an issue for a normative part.=09
The reference should probably be listed in the reference section.

"However, since not all identifiers from IPFIX would be applicable to =
this proposal, only a limited set identified here can be supported by =
BGP SLA exchange. Any new element identifier, in future, added to the =
IPFIX IANA registry does not automatically mean supported for this =
proposal."

- This probably calls for a IANA registry to identify which element =
identifier can be used.
- Text should clarify that the list of accepted identifiers is defined =
in the subsequent list (having no name and no number).
	=09
m20) section 3 is hard to read.
- IMO the document/section 3 would benefit from an section presenting an =
overview of the solution
- section 3 have a single subsection (3.1) hence the interest of using =
subsection is limited. Given the size of section 3 (10 pages), to =
improve readability I would suggest the use of multiples subsection.

m21)
      "The minimum policed unit (m) and maximum packet size (M)
      parameters have no relevance for the purpose of SLA exchange.
      Thus they MUST be ignored."

Why specifying and sending such parameters in BGP if they MUST be =
ignored by the receiver?	 =20
	 =20
m22)
" This rate indicates the minimum rate, measured in bytes of Layer 2 =
(L2) datagrams per second,"
I'm not sure why the Layer 2 size is used rather than the layer 3 size. =
As a consequence, you need to send additional information (L2_OVERHEAD) =
which may be not needed otherwise.
Draft cites RFC 2212 as the source of this TRAFFIC_CLASS_TSPEC =
parameter, and RFC 2212 use the IP datagram size.

m23)
"4.  Originating SLA Notification

   The QoS attribute to advertise SLA sub-type MUST be added by the
   originator of a BGP UPDATE message."
  =20
I guess you don't mean that advertising this new attribute is mandatory. =
So please rephrase (e.g. at least :s/MUST/MAY)  =20

m24)  " If a BGP node is capable of processing QoS attribute, it =
optionally MAY process the message."
   What message? The BGP UPDATE?
  =20
m25)   "BGP node MUST drop SLA related sub-type from the QoS attribute, =
if
   none of the AS from the destination list is in the forwarding path."

   There is no AS in the forwarding path. Please rephrase.
  =20
m26)   "5.2.  BGP Node not Capable of Processing QoS Attribute

   If the BGP node is not capable of processing QoS attribute, it MUST
   forward the QoS attribute message unaltered."

This section is completely useless. It should either be removed or at =
the minimum should not specify a behavior. e.g.
OLD: it MUST forward
NEW: as per RFC4271, it will

or should define what is meant by "processing QoS attribute". (my =
reading is "does not recognize")

m27) "If advertised QoS Attribute, inside an update message, is with a =
flag set indicating to drop that message, a receiver MUST drop message =
if it is the last receiver, in update path, that message is advertised =
to."
This is not extremely clear. Especially for a "MUST" behavior. Please =
rephrase using the protocols names of the messages/fields.

m28)"If the advertised SLA is from the next hop, in the reverse path, =
the receiver may implement advertised SLA for the whole link, the link =
could be physical or virtual link, associated with the next hop. "
  =20
I don't understand. Please rephrase. (e.g. which next-hop?, reverse path =
of what?)

"If NLRI advertised in update message is not of the next hop,"
I don't understand. Please rephrase.=20

m29)
   "For cases where if earlier messages have not reached the intended =
receiver yet, a re-signaling is required.  A receiver may intend to =
request an SLA message from the originator in such case.  Since BGP =
messages are considered reliable, it is assumed that advertised messages =
always reach intended receivers.  Thus discussion of REQUEST
   message, for this purpose or any other purpose, is considered out of =
the scope of this document."
Some parsing issues.
The text seems to self contradict:
- "a re-signaling is required"
- "Since BGP messages are considered reliable, it is assumed that =
advertised messages always reach intended receivers."
=20
m30)
   "There are well-defined recommendations that exist for traffic class =
mapping between two technologies. "
  =20
   Please provides references.
  =20
m31)
"AS2 can advertise the same or a subset of that SLA to AS3 in the =
context of tunnel's ip address."
Which tunnel are you refering to?
=20

Nits:
N1) ID Nits reports 1 error (Obsolete normative reference)
N2) In a BGP context, "AS" stands for "Autonomous System" and not =
"Automated System"
N3) =20
"     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                                                               |
       ~              Traffic Class Elements count/values              ~
       |                                                               |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ =
"
	  =20
I feel that the figure could be updated to more accurately represent =
both fields (length).	Something like  =20
	=09
	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       | Traffic  Count|      Traffic Class values                     |
       +-+-+-+-+-+-+-+-+                                               ~
       |                                                               |
       ~                                                               ~
       |                                                               |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

N4) In general for all figures, it's easier if the name of the legend / =
descriptive paragraph match the name in the figure.
e.g. =20
"Class Desc Len" in figure versus "Traffic Class Descr Length" in the =
legend "Advertiser id TLVs" in figure versus "Optional Advertiser id =
TLV" in the legend "Event" in figure versus "SLA Event Type" in the =
legend ...
=09
N5)	=09
"IPFIX IANA registry is "https://www.ietf.org/assignments/ipfix" "
May be added to the reference section.

N6) There is a mix of usage of "octet" and "byte". For consistency, only =
one should be chosen ("octet" IMHO)

N7)[CPP]      I-D.boucadair-connectivity-provisioning-profile"
why not citing RFC 7297 instead?


Regards,
Bruno

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Subject: Re: [Idr] [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05
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Bruno:=20

It is normally the AD that discusses this during the AD evaluation.  =
However with 10 major concerns, as a chair I would like to see these =
topics discussed before I send the document to the AD.   Otherwise, =
Alvaro (AD) will just send it back to the IDR WG.=20

Sue=20

-----Original Message-----
From: rtg-dir [mailto:rtg-dir-bounces@ietf.org] On Behalf Of =
bruno.decraene@orange.com
Sent: Friday, May 22, 2015 10:35 AM
To: Susan Hares
Cc: rtg-dir@ietf.org; rtg-ads@tools.ietf.org; 'idr wg'
Subject: Re: [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05

Susan,

> From: Susan Hares [mailto:shares@ndzh.com] > Sent: Friday, May 22,=20
> 2015 4:25 PM
>=20
> Bruno:
>=20
> It is for the Chairs to discuss with the authors.=20

Sure.
If you are referring to the introduction text citing Routing ADs, I felt =
like I had to follow the email template provided at  =
http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDirGuidance

Bruno

> However, I hope that the
> authors will discuss these issues on list with you.  I think it is =
important to
> cover the major topics on list?   I will start a WG thread with these =
major
> issue.  The minor issues will be addressed offline with the authors.
>=20
> Thank you for your careful review.
>=20
> Sue Hares
>=20
>=20
> -----Original Message-----
> From: rtg-dir [mailto:rtg-dir-bounces@ietf.org] On Behalf Of=20
> bruno.decraene@orange.com
> Sent: Friday, May 22, 2015 9:29 AM
> To: rtg-ads@tools.ietf.org; idr-chairs@ietf.org; draft-ietf-idr-sla-=20
> exchange.all@tools.ietf.org
> Cc: rtg-dir@ietf.org; idr wg
> Subject: [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05
>=20
> Hello,
>=20
> I have been selected as the Routing Directorate reviewer for this=20
> draft. The Routing Directorate seeks to review all routing or=20
> routing-related drafts as they pass through IETF last call and IESG=20
> review, and sometimes on special request. The purpose of the review is =

> to provide assistance to the Routing ADs. For more information about=20
> the Routing Directorate, please see=20
> http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir
>=20
> Although these comments are primarily for the use of the Routing ADs,=20
> it would be helpful if you could consider them along with any other=20
> IETF Last Call comments that you receive, and strive to resolve them=20
> through discussion or by updating the draft.
>=20
> Document: draft-ietf-idr-sla-exchange-05
> Reviewer: Bruno Decraene
> Review Date: 22/05/2015
> IETF LC End Date: 02/03/2015
> Intended Status: Standards Track
>=20
> Summary:  I have significant concerns about this document and=20
> recommend that the Routing ADs discuss these issues further with the =
authors.
>=20
> (Or the chairs as I see that this document has not yet been passed to=20
> the
> ADs)
>=20
> Comments:
> In general, the readability of the document is acceptable but could be =

> improved, both from a language and technical precision point of view.
> (examples below).
> However, there are some normative parts of this Standard Track=20
> specification that I could not understand.
>=20
> Major:
> M1) The Introduction states
> "In a multi-vendor network, translating SLAs into technology-specific=20
> and vendor-specific configuration requires to consider specificities=20
> of each vendor.
> There does not exist any standard protocol to translate SLA agreements =

> into technical clauses and configurations and thus both the steps of=20
> out of band learning of negotiated SLA and provisioning them in a=20
> vendor specific language can be complex and error-prone."
>=20
> - I guess some would use NETCONF/YANG to address this. It could be=20
> questioned why BGP has been preferred. Especially since:
> 	- in the VPN context (using a lot of QoS and the uses cases described =

> in the document) many customer connections use static routing rather=20
> than eBGP. Hence this specification would not be enough to distribute=20
> SLA and would require another protocol.
> 	- QoS is only one part of the configuration effort. Why using=20
> different protocols to configure different aspects?
>=20
> - This may be related to draft-l3vpn-service-yang and the L3VPN=20
> Service Model WG (l3sm). May be some form of coordination would be =
beneficial.
>=20
> M2)"The exception is where a BGP speaker, in the middle of an update=20
> path to the destination AS, aggregates prefixes. We will refer this=20
> middle BGP speaker, that aggregates routes, as an Aggregator.=20
> Aggregator is then required to insert original NLRI details in the =
optional advertiser field"
>=20
> If you refer to the use of AS_SET, RFC6472 recommends against the use=20
> of AS_SET. So, I'm not sure that there is a need to add complexity in=20
> this specification in order to handle route aggregation.
> If removed, "section 5.3 Aggregator" may also be removed.
>=20
> M4)
>  "Traffic Class Description
>         Ascii Description of the Traffic Class"
>=20
> Should it be UTF-8?
>=20
> M5) SLA definition
>  It would be good to define what a SLA is. Especially since this whole =

> goal of the draft is to advertise SLA in BGP. Citing an individual=20
> draft [CPP] is not enough to have an agreed on definition, especially =
for a STD track RFC.
>  Since QoS is not new in the IETF, there is probably a document=20
> defining it (or using a more popular terminology).
> Looking in google, I don't really see matches for "IETF SLA" (outside=20
> of documents written by the authors).
> Wikipedia seems to give a quite different definition, much wider than=20
> diffserv specific parameters which seems to be the main point of this=20
> BGP
> attribute:
> "A service-level agreement (SLA) is a part of a service=20
> contract[disambiguation needed] where a service is formally defined.
> Particular aspects of the service - scope, quality, responsibilities - =

> are agreed between the service provider and the service user. A common =

> feature of an SLA is a contracted delivery time (of the service or=20
> performance). As an example, Internet service providers and telcos=20
> will commonly include service level agreements within the terms of=20
> their contracts with customers to define the level(s) of service being =

> sold in plain language terms. In this case the SLA will typically have =

> a technical definition in terms of mean time between failures (MTBF),=20
> mean time to repair or mean time to recovery (MTTR); identifying which =

> party is responsible for reporting faults or paying fees;=20
> responsibility for various data rates; throughput; jitter; or similar =
measurable details.."
>=20
> M6)
>  "   Traffic Class Service (optional),
>         16-bit          =3D type of the field
>         variable-length =3D based on type of the service"
>=20
> Please specify the content of the "variable-length" field.
> If it only contains the Data Type of the IPFIX Information Elements,=20
> I'm not sure how the encoding supports, on the receiving side, the=20
> skipping of unknown ElementID.
> Given that I also don't see an end to end negotiation channel for the=20
> BGP speaker to known the capabilities of the BGP receiver, I don't see =

> how the specification will support the introduction of new Traffic=20
> Class Services in the future.
>=20
> M7) NLRI
> I don't see the relation between the QoS attribute and the NLRI.
> - Is the QoS attribute only applicable to the NLRI advertised? If so=20
> what is the relation with destinationIP* advertised in the classifier=20
> Element? Should they be restricted to more specifics of the advertised =
NLRI?
> - Also the QoS attribute may instruct "to drop entire BGP update=20
> message [Note that it is an indication to drop entire update message,=20
> not only QoS attribute]". This means that the NLRI will not be=20
> propagated, hence routed, anymore, which seems strange. To preserve=20
> routing of the NLRI, do the QoS attribute require to advertise a less=20
> specific prefix (with no QoS attribute) in addition? Or to use=20
> ADD_PATH to advertise the NLRI multiple times (with & without the QoS =
attribute).
>=20
> Possibly same question for the relation between the QoS attribute and=20
> the AFI/SAFI of the BGP UPDATE. Is the QoS attribute to be understood=20
> in the context of the AFI/SAFI or not? e.g. if the classifier element=20
> is the ipDiffServCodePoint does it match all protocols or only the one =

> of the AFI/SAFI?
>=20
> M8) Error handling
> Current text says that error handling MAY use attribute discard or MAY =

> use treat as withdraw.
> This seems underspecified as one implementation would be free to do=20
> nothing, while another could do session reset. This would open many=20
> BGP session reset in real networks.
> Please specific what must be done.
> Besides, other part of the document provides some more=20
> specific/different error handling. e.g. "If there are more than one=20
> such Traffic Classes present then advertised SLA parameters MUST be =
ignored."
> Finally, the spec needs to define when the new attribute is considered =

> malformed.
> On an editorial note, I would prefer a dedicate section related to=20
> error handling.
>=20
> M9) security consideration may require some discussion.
> "There is a potential for mis-behaved AS to advertise wrong SLA,=20
> stealing identity of another AS."
> Agreed. But there are probably other attack vectors (e.g. modifying=20
> the attribute during propagation, setting parameters to instruct BGP=20
> to drop the message (as this seems alllowed by the specification)...)
>=20
> "This resembles to problems already identified and resolved, in the=20
> routing world, thru reverse path forwarding check."
> "Resembles" is not enough. "Resolved" is probably a bit quick.
>=20
> "One proposal, inline to RPF, to resolve such threats is to have each=20
> BGP speaker node, in the forwarding path, perform reverse path check=20
> on source AS."
> If this is a specification, it should be described in the document=20
> (quickly citing it in the security section is not enough).
> It's also a bit short in term of specification. e.g. I don't see=20
> "source AS" in the forwarding path (neither in the packet nor in the=20
> FIB)
>=20
> "Since we expect these messages to originate and distributed in the=20
> managed network, there should not be any risks for identity theft."
> If you restrict the use of this specification/ATTRIBUTE in "managed=20
> network", this needs to be clarified from the beginning (and not at=20
> this very end of the document), and the specification should take=20
> measure to ensure that this attribute is not received from/leaked=20
> outside of this "managed network".
> Defining "managed network" may also help, especially since the=20
> proposition involves multiple ASes and multiple organisations.
> (otherwise, you need to handle the case when this attribute is used=20
> outside of "managed network" and therefore consider the security=20
> implications)
>=20
> M10) IANA section is under specified.
> e.g. you should:
> - states the name of the registry that you want to create or update.
> - states the name of the new entries in existing registries.
> - define all your new registries. (e.g. you don't have ones for new=20
> QoS TLV subtypes (defined in =C2=A73.1), Optional Advertised id TLV, =
SLA=20
> event Type...)
> - define the registration policy of those new registries.
>=20
> Reading RFC5226 may help.
>=20
>=20
> Minor (some not so minor):
> m1) From an editorial standpoint, the document may benefit from an=20
> english language review.
>   - Some sentences are hard to parse (at least for me). e.g. "The need =

> to exchange SLA parameters between domains (Automated Systems (AS)),=20
> where in use-cases described in this document, BGP is a suitable=20
> protocol for inter-domain exchange [RFC4271][RFC4364].
>   - Adding a full point "." at the end of each sentence may help the =
parsing.
>   - IMHO some sentences could be rewritten to improve readability. =
e.g.
>   OLD:
>         highest order bit (bit 0) -
>             It defines if update message MUST be dropped (if set to 1)
>             without updating routing information base, when this is =
the
>             last BGP receiver from the list of destination ASes this
>             attribute is announced to, or MUST announce (if set to 0)
>             further to BGP peers
>   NEW
>         highest order bit (bit 0) -
> 			This flags defines how update message must be handled by the last=20
> BGP receiver in the list of destination ASes.
>             If set (1) update message MUST be dropped without updating =

> routing information base.
> 			If cleared (0) update message MUST be further advertised to BGP=20
> peers.
>=20
>   On a side note, at this point in the document, it's not crystal=20
> clear what you mean by "update message". The QoS Attribute TLV? The =
QoS BGP attribute?
> The BGP UPDATE message? In general, in the document, please use the=20
> protocols names of the messages/fields.
>   - "SLA sub-type specific value field details." I guess you mean=20
> :s/specific/specifies.
>=20
> m2)
> OLD: Remaining bits are currently unused and MUST be set to 0
> NEW: The lower-order seven bits of the Attribute Flags octet are =
unused.
> They MUST be zero when sent and MUST be ignored when received.
> (Proposed text is a copy/past from RFC 4271. You are free to use=20
> another text but please specify the behaviour on the receiving side as =

> we have seen BGP session reset in the Internet which a much clearer=20
> sentence.)
>=20
> m3) That's not specific to this document, but I would find useful to=20
> have the related implementation report draft be referenced in the=20
> informative reference section.
>=20
> m4) "sub type Length" Please specify exactly what part of the message=20
> is covered by the length (as some IETF spec use the length of the=20
> value field, while some other use the length of the type+length+value =
fields.
>=20
> m5) "32-bit source AS (Advertiser)" The word "advertiser" may be=20
> misleading. (cf draft-hares-idr-update-attrib-low-bits-fix). RFC 4271=20
> uses "Originating speaker" (SIDR seems also to use "Origin".
> Multiple occurrences in the draft.
>=20
> m6)  "0 =3D ignore Source and Destination AS list from this Value =
field.
>             Instead refer to Source and Destination AS as defined by =
BGP
>             message"
> I'm not sure what is meant by the second sentence. Please use the=20
> specific names of BGP messages and fields.
>=20
> m7) "format of the SLA message"
> Giving names and number to figures could be considered.
> So does adding the memory axis:
>     0                   1                   2                   3
>     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>=20
>=20
> m8)
> "    Optional advertiser id total len
>         16-bit Source address identifier (optional)."
>=20
> I read this as the field "Optional advertiser id total len" contains a =

> 16-bit Source address identifier.
> While this field probably contain the length of "something". Please=20
> check/clarify.
>=20
> m9)
>     "Optional Advertiser id TLV
>         4-bit type"
>=20
> You need to specify the size of the "Length" field. Especially since=20
> you introduce a somewhat unusual size of the "Type field" and some=20
> people may assume that the size of the "length" field is of the same=20
> size (4-bit), while some others may believe its the usual 1-octet.
>=20
> m10)"    Destination AS count
>         32-bit destination AS count to take variable length AS list."
> I guess you mean:
> number of destination ASes
> This field indicates the number of destination AS present in the=20
> Destination AS list
>=20
> m11) "SLA Id"
> The text under "SLA Id" mixes text related to "SLA Id " and text=20
> related to "Content". Please split the text.
>=20
> m12) I don't see a description of the filed "Content as per SLA Event"
>=20
> m13)  "    SLA Length
>         12-bits"
> Please specify what is covered/measured by this length field.
>=20
> m14)
> "    Direction
>         0x1 =3D incoming, from destination AS towards source AS
>         0x2 =3D outgoing, from source AS towards destination AS"
> I find the terms "incoming" and "outcoming" a bit misleading. e.g.
> the direction "from source AS towards destination AS" seems to be:
> - outgoing in the source AS
> - ingoing in the destination AS
>=20
> m15)    "Traffic Class Descr Length
>         08-bit, size of the length"
> proposition  :s/size of the length/ length of XXX
>=20
> m16) In section 3, I don't see the specification of the REQUEST SLA=20
> even type.
> At the end of the document, it's said that "discussion of REQUEST=20
> message, for this purpose or any other purpose, is considered out of=20
> the scope of this document." In which case, you should probably not=20
> specify a REQUEST SLA even type.
>=20
> m19)
> "Given IPFIX [RFC5102] has well defined identifier set for a large=20
> number of packet attributes, IPFIX IANA registry is=20
> "https://www.ietf.org/assignments/ipfix" chosen to specify packet=20
> classification attributes."
> Sentence is hard to parse, which is an issue for a normative part.
> The reference should probably be listed in the reference section.
>=20
> "However, since not all identifiers from IPFIX would be applicable to=20
> this proposal, only a limited set identified here can be supported by=20
> BGP SLA exchange. Any new element identifier, in future, added to the=20
> IPFIX IANA registry does not automatically mean supported for this =
proposal."
>=20
> - This probably calls for a IANA registry to identify which element=20
> identifier can be used.
> - Text should clarify that the list of accepted identifiers is defined =

> in the subsequent list (having no name and no number).
>=20
> m20) section 3 is hard to read.
> - IMO the document/section 3 would benefit from an section presenting=20
> an overview of the solution
> - section 3 have a single subsection (3.1) hence the interest of using =

> subsection is limited. Given the size of section 3 (10 pages), to=20
> improve readability I would suggest the use of multiples subsection.
>=20
> m21)
>       "The minimum policed unit (m) and maximum packet size (M)
>       parameters have no relevance for the purpose of SLA exchange.
>       Thus they MUST be ignored."
>=20
> Why specifying and sending such parameters in BGP if they MUST be=20
> ignored by the receiver?
>=20
> m22)
> " This rate indicates the minimum rate, measured in bytes of Layer 2=20
> (L2) datagrams per second,"
> I'm not sure why the Layer 2 size is used rather than the layer 3=20
> size. As a consequence, you need to send additional information=20
> (L2_OVERHEAD) which may be not needed otherwise.
> Draft cites RFC 2212 as the source of this TRAFFIC_CLASS_TSPEC=20
> parameter, and RFC 2212 use the IP datagram size.
>=20
> m23)
> "4.  Originating SLA Notification
>=20
>    The QoS attribute to advertise SLA sub-type MUST be added by the
>    originator of a BGP UPDATE message."
>=20
> I guess you don't mean that advertising this new attribute is=20
> mandatory. So please rephrase (e.g. at least :s/MUST/MAY)
>=20
> m24)  " If a BGP node is capable of processing QoS attribute, it=20
> optionally MAY process the message."
>    What message? The BGP UPDATE?
>=20
> m25)   "BGP node MUST drop SLA related sub-type from the QoS =
attribute,
> if
>    none of the AS from the destination list is in the forwarding =
path."
>=20
>    There is no AS in the forwarding path. Please rephrase.
>=20
> m26)   "5.2.  BGP Node not Capable of Processing QoS Attribute
>=20
>    If the BGP node is not capable of processing QoS attribute, it MUST
>    forward the QoS attribute message unaltered."
>=20
> This section is completely useless. It should either be removed or at=20
> the minimum should not specify a behavior. e.g.
> OLD: it MUST forward
> NEW: as per RFC4271, it will
>=20
> or should define what is meant by "processing QoS attribute". (my=20
> reading is "does not recognize")
>=20
> m27) "If advertised QoS Attribute, inside an update message, is with a =

> flag set indicating to drop that message, a receiver MUST drop message =

> if it is the last receiver, in update path, that message is advertised =
to."
> This is not extremely clear. Especially for a "MUST" behavior. Please=20
> rephrase using the protocols names of the messages/fields.
>=20
> m28)"If the advertised SLA is from the next hop, in the reverse path,=20
> the receiver may implement advertised SLA for the whole link, the link =

> could be physical or virtual link, associated with the next hop. "
>=20
> I don't understand. Please rephrase. (e.g. which next-hop?, reverse=20
> path of
> what?)
>=20
> "If NLRI advertised in update message is not of the next hop,"
> I don't understand. Please rephrase.
>=20
> m29)
>    "For cases where if earlier messages have not reached the intended=20
> receiver yet, a re-signaling is required.  A receiver may intend to=20
> request an SLA message from the originator in such case.  Since BGP=20
> messages are considered reliable, it is assumed that advertised=20
> messages always reach intended receivers.  Thus discussion of REQUEST
>    message, for this purpose or any other purpose, is considered out=20
> of the scope of this document."
> Some parsing issues.
> The text seems to self contradict:
> - "a re-signaling is required"
> - "Since BGP messages are considered reliable, it is assumed that=20
> advertised messages always reach intended receivers."
>=20
> m30)
>    "There are well-defined recommendations that exist for traffic=20
> class mapping between two technologies. "
>=20
>    Please provides references.
>=20
> m31)
> "AS2 can advertise the same or a subset of that SLA to AS3 in the=20
> context of tunnel's ip address."
> Which tunnel are you refering to?
>=20
>=20
> Nits:
> N1) ID Nits reports 1 error (Obsolete normative reference)
> N2) In a BGP context, "AS" stands for "Autonomous System" and not=20
> "Automated System"
> N3)
> "     =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>        |                                                               =
|
>        ~              Traffic Class Elements count/values              =
~
>        |                                                               =
|
>        =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "
>=20
> I feel that the figure could be updated to more accurately represent =
both
> fields (length).	Something like
>=20
> 	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>        | Traffic  Count|      Traffic Class values                     =
|
>        +-+-+-+-+-+-+-+-+                                               =
~
>        |                                                               =
|
>        ~                                                               =
~
>        |                                                               =
|
>       =20
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>=20
> N4) In general for all figures, it's easier if the name of the legend=20
> / descriptive paragraph match the name in the figure.
> e.g.
> "Class Desc Len" in figure versus "Traffic Class Descr Length" in the=20
> legend "Advertiser id TLVs" in figure versus "Optional Advertiser id=20
> TLV" in the legend "Event" in figure versus "SLA Event Type" in the =
legend ...
>=20
> N5)
> "IPFIX IANA registry is "https://www.ietf.org/assignments/ipfix" "
> May be added to the reference section.
>=20
> N6) There is a mix of usage of "octet" and "byte". For consistency,=20
> only one should be chosen ("octet" IMHO)
>=20
> N7)[CPP]      I-D.boucadair-connectivity-provisioning-profile"
> why not citing RFC 7297 instead?
>=20
>=20
> Regards,
> Bruno
>=20
> ______________________________________________________________
> ___________________________________________________________
>=20
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que les pieces jointes.
> Les messages electroniques etant susceptibles d'alteration, Orange=20
> decline toute responsabilite si ce message a ete altere, deforme ou =
falsifie. Merci.
>=20
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> As emails may be altered, Orange is not liable for messages that have=20
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> Thank you.
>=20


_________________________________________________________________________=
________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations =
confidentielles ou privilegiees et ne doivent donc pas etre diffuses, =
exploites ou copies sans autorisation. Si vous avez recu ce message par =
erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les =
pieces jointes. Les messages electroniques etant susceptibles =
d'alteration, Orange decline toute responsabilite si ce message a ete =
altere, deforme ou falsifie. Merci.

This message and its attachments may contain confidential or privileged =
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If you have received this email in error, please notify the sender and =
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Shitanshu, Keyur, Sandeep, Luis, and Mohamed:=20

Would you please address the 10 major points (see below) that Bruno =
raised in his routing directorate review?  The draft will not be =
forwarded to the IESG for publication until you address the concerns on =
the mail list?=20

You can address the concern by changing your document or indicate why =
you think your original text/design is reasonable.  I would appreciate =
your quick attention on this topic.=20

Thank you,=20

Sue=20


> Document: draft-ietf-idr-sla-exchange-05
> Reviewer: Bruno Decraene
> Review Date: 22/05/2015
> IETF LC End Date: 02/03/2015
> Intended Status: Standards Track
>=20
> Summary:  I have significant concerns about this document and=20
> recommend that the Routing ADs discuss these issues further with the =
authors.
>=20
> (Or the chairs as I see that this document has not yet been passed to=20
> the
> ADs)
>=20
> Comments:
> In general, the readability of the document is acceptable but could be =

> improved, both from a language and technical precision point of view.
> (examples below).
> However, there are some normative parts of this Standard Track=20
> specification that I could not understand.
>=20
> Major:
> M1) The Introduction states
> "In a multi-vendor network, translating SLAs into technology-specific=20
> and vendor-specific configuration requires to consider specificities=20
> of each vendor.
> There does not exist any standard protocol to translate SLA agreements =

> into technical clauses and configurations and thus both the steps of=20
> out of band learning of negotiated SLA and provisioning them in a=20
> vendor specific language can be complex and error-prone."
>=20
> - I guess some would use NETCONF/YANG to address this. It could be=20
> questioned why BGP has been preferred. Especially since:
> 	- in the VPN context (using a lot of QoS and the uses cases described =

> in the document) many customer connections use static routing rather=20
> than eBGP. Hence this specification would not be enough to distribute=20
> SLA and would require another protocol.
> 	- QoS is only one part of the configuration effort. Why using=20
> different protocols to configure different aspects?
>=20
> - This may be related to draft-l3vpn-service-yang and the L3VPN=20
> Service Model WG (l3sm). May be some form of coordination would be =
beneficial.
>=20
> M2)"The exception is where a BGP speaker, in the middle of an update=20
> path to the destination AS, aggregates prefixes. We will refer this=20
> middle BGP speaker, that aggregates routes, as an Aggregator.
> Aggregator is then required to insert original NLRI details in the =
optional advertiser field"
>=20
> If you refer to the use of AS_SET, RFC6472 recommends against the use=20
> of AS_SET. So, I'm not sure that there is a need to add complexity in=20
> this specification in order to handle route aggregation.
> If removed, "section 5.3 Aggregator" may also be removed.
>=20
> M4)
>  "Traffic Class Description
>         Ascii Description of the Traffic Class"
>=20
> Should it be UTF-8?
>=20
> M5) SLA definition
>  It would be good to define what a SLA is. Especially since this whole =

> goal of the draft is to advertise SLA in BGP. Citing an individual=20
> draft [CPP] is not enough to have an agreed on definition, especially =
for a STD track RFC.
>  Since QoS is not new in the IETF, there is probably a document=20
> defining it (or using a more popular terminology).
> Looking in google, I don't really see matches for "IETF SLA" (outside=20
> of documents written by the authors).
> Wikipedia seems to give a quite different definition, much wider than=20
> diffserv specific parameters which seems to be the main point of this=20
> BGP
> attribute:
> "A service-level agreement (SLA) is a part of a service=20
> contract[disambiguation needed] where a service is formally defined.
> Particular aspects of the service - scope, quality, responsibilities - =

> are agreed between the service provider and the service user. A common =

> feature of an SLA is a contracted delivery time (of the service or=20
> performance). As an example, Internet service providers and telcos=20
> will commonly include service level agreements within the terms of=20
> their contracts with customers to define the level(s) of service being =

> sold in plain language terms. In this case the SLA will typically have =

> a technical definition in terms of mean time between failures (MTBF),=20
> mean time to repair or mean time to recovery (MTTR); identifying which =

> party is responsible for reporting faults or paying fees;=20
> responsibility for various data rates; throughput; jitter; or similar =
measurable details.."
>=20
> M6)
>  "   Traffic Class Service (optional),
>         16-bit          =3D type of the field
>         variable-length =3D based on type of the service"
>=20
> Please specify the content of the "variable-length" field.
> If it only contains the Data Type of the IPFIX Information Elements,=20
> I'm not sure how the encoding supports, on the receiving side, the=20
> skipping of unknown ElementID.
> Given that I also don't see an end to end negotiation channel for the=20
> BGP speaker to known the capabilities of the BGP receiver, I don't see =

> how the specification will support the introduction of new Traffic=20
> Class Services in the future.
>=20
> M7) NLRI
> I don't see the relation between the QoS attribute and the NLRI.
> - Is the QoS attribute only applicable to the NLRI advertised? If so=20
> what is the relation with destinationIP* advertised in the classifier=20
> Element? Should they be restricted to more specifics of the advertised =
NLRI?
> - Also the QoS attribute may instruct "to drop entire BGP update=20
> message [Note that it is an indication to drop entire update message,=20
> not only QoS attribute]". This means that the NLRI will not be=20
> propagated, hence routed, anymore, which seems strange. To preserve=20
> routing of the NLRI, do the QoS attribute require to advertise a less=20
> specific prefix (with no QoS attribute) in addition? Or to use=20
> ADD_PATH to advertise the NLRI multiple times (with & without the QoS =
attribute).
>=20
> Possibly same question for the relation between the QoS attribute and=20
> the AFI/SAFI of the BGP UPDATE. Is the QoS attribute to be understood=20
> in the context of the AFI/SAFI or not? e.g. if the classifier element=20
> is the ipDiffServCodePoint does it match all protocols or only the one =

> of the AFI/SAFI?
>=20
> M8) Error handling
> Current text says that error handling MAY use attribute discard or MAY =

> use treat as withdraw.
> This seems underspecified as one implementation would be free to do=20
> nothing, while another could do session reset. This would open many=20
> BGP session reset in real networks.
> Please specific what must be done.
> Besides, other part of the document provides some more=20
> specific/different error handling. e.g. "If there are more than one=20
> such Traffic Classes present then advertised SLA parameters MUST be =
ignored."
> Finally, the spec needs to define when the new attribute is considered =

> malformed.
> On an editorial note, I would prefer a dedicate section related to=20
> error handling.
>=20
> M9) security consideration may require some discussion.
> "There is a potential for mis-behaved AS to advertise wrong SLA,=20
> stealing identity of another AS."
> Agreed. But there are probably other attack vectors (e.g. modifying=20
> the attribute during propagation, setting parameters to instruct BGP=20
> to drop the message (as this seems alllowed by the specification)...)
>=20
> "This resembles to problems already identified and resolved, in the=20
> routing world, thru reverse path forwarding check."
> "Resembles" is not enough. "Resolved" is probably a bit quick.
>=20
> "One proposal, inline to RPF, to resolve such threats is to have each=20
> BGP speaker node, in the forwarding path, perform reverse path check=20
> on source AS."
> If this is a specification, it should be described in the document=20
> (quickly citing it in the security section is not enough).
> It's also a bit short in term of specification. e.g. I don't see=20
> "source AS" in the forwarding path (neither in the packet nor in the
> FIB)
>=20
> "Since we expect these messages to originate and distributed in the=20
> managed network, there should not be any risks for identity theft."
> If you restrict the use of this specification/ATTRIBUTE in "managed=20
> network", this needs to be clarified from the beginning (and not at=20
> this very end of the document), and the specification should take=20
> measure to ensure that this attribute is not received from/leaked=20
> outside of this "managed network".
> Defining "managed network" may also help, especially since the=20
> proposition involves multiple ASes and multiple organisations.
> (otherwise, you need to handle the case when this attribute is used=20
> outside of "managed network" and therefore consider the security
> implications)
>=20
> M10) IANA section is under specified.
> e.g. you should:
> - states the name of the registry that you want to create or update.
> - states the name of the new entries in existing registries.
> - define all your new registries. (e.g. you don't have ones for new=20
> QoS TLV subtypes (defined in =C2=A73.1), Optional Advertised id TLV, =
SLA=20
> event Type...)
> - define the registration policy of those new registries.
>=20
> Reading RFC5226 may help.
>=20
>=20
> Minor (some not so minor):
> m1) From an editorial standpoint, the document may benefit from an=20
> english language review.
>   - Some sentences are hard to parse (at least for me). e.g. "The need =

> to exchange SLA parameters between domains (Automated Systems (AS)),=20
> where in use-cases described in this document, BGP is a suitable=20
> protocol for inter-domain exchange [RFC4271][RFC4364].
>   - Adding a full point "." at the end of each sentence may help the =
parsing.
>   - IMHO some sentences could be rewritten to improve readability. =
e.g.
>   OLD:
>         highest order bit (bit 0) -
>             It defines if update message MUST be dropped (if set to 1)
>             without updating routing information base, when this is =
the
>             last BGP receiver from the list of destination ASes this
>             attribute is announced to, or MUST announce (if set to 0)
>             further to BGP peers
>   NEW
>         highest order bit (bit 0) -
> 			This flags defines how update message must be handled by the last=20
> BGP receiver in the list of destination ASes.
>             If set (1) update message MUST be dropped without updating =

> routing information base.
> 			If cleared (0) update message MUST be further advertised to BGP=20
> peers.
>=20
>   On a side note, at this point in the document, it's not crystal=20
> clear what you mean by "update message". The QoS Attribute TLV? The =
QoS BGP attribute?
> The BGP UPDATE message? In general, in the document, please use the=20
> protocols names of the messages/fields.
>   - "SLA sub-type specific value field details." I guess you mean=20
> :s/specific/specifies.
>=20
> m2)
> OLD: Remaining bits are currently unused and MUST be set to 0
> NEW: The lower-order seven bits of the Attribute Flags octet are =
unused.
> They MUST be zero when sent and MUST be ignored when received.
> (Proposed text is a copy/past from RFC 4271. You are free to use=20
> another text but please specify the behaviour on the receiving side as =

> we have seen BGP session reset in the Internet which a much clearer
> sentence.)
>=20
> m3) That's not specific to this document, but I would find useful to=20
> have the related implementation report draft be referenced in the=20
> informative reference section.
>=20
> m4) "sub type Length" Please specify exactly what part of the message=20
> is covered by the length (as some IETF spec use the length of the=20
> value field, while some other use the length of the type+length+value =
fields.
>=20
> m5) "32-bit source AS (Advertiser)" The word "advertiser" may be=20
> misleading. (cf draft-hares-idr-update-attrib-low-bits-fix). RFC 4271=20
> uses "Originating speaker" (SIDR seems also to use "Origin".
> Multiple occurrences in the draft.
>=20
> m6)  "0 =3D ignore Source and Destination AS list from this Value =
field.
>             Instead refer to Source and Destination AS as defined by =
BGP
>             message"
> I'm not sure what is meant by the second sentence. Please use the=20
> specific names of BGP messages and fields.
>=20
> m7) "format of the SLA message"
> Giving names and number to figures could be considered.
> So does adding the memory axis:
>     0                   1                   2                   3
>     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>=20
>=20
> m8)
> "    Optional advertiser id total len
>         16-bit Source address identifier (optional)."
>=20
> I read this as the field "Optional advertiser id total len" contains a =

> 16-bit Source address identifier.
> While this field probably contain the length of "something". Please=20
> check/clarify.
>=20
> m9)
>     "Optional Advertiser id TLV
>         4-bit type"
>=20
> You need to specify the size of the "Length" field. Especially since=20
> you introduce a somewhat unusual size of the "Type field" and some=20
> people may assume that the size of the "length" field is of the same=20
> size (4-bit), while some others may believe its the usual 1-octet.
>=20
> m10)"    Destination AS count
>         32-bit destination AS count to take variable length AS list."
> I guess you mean:
> number of destination ASes
> This field indicates the number of destination AS present in the=20
> Destination AS list
>=20
> m11) "SLA Id"
> The text under "SLA Id" mixes text related to "SLA Id " and text=20
> related to "Content". Please split the text.
>=20
> m12) I don't see a description of the filed "Content as per SLA Event"
>=20
> m13)  "    SLA Length
>         12-bits"
> Please specify what is covered/measured by this length field.
>=20
> m14)
> "    Direction
>         0x1 =3D incoming, from destination AS towards source AS
>         0x2 =3D outgoing, from source AS towards destination AS"
> I find the terms "incoming" and "outcoming" a bit misleading. e.g.
> the direction "from source AS towards destination AS" seems to be:
> - outgoing in the source AS
> - ingoing in the destination AS
>=20
> m15)    "Traffic Class Descr Length
>         08-bit, size of the length"
> proposition  :s/size of the length/ length of XXX
>=20
> m16) In section 3, I don't see the specification of the REQUEST SLA=20
> even type.
> At the end of the document, it's said that "discussion of REQUEST=20
> message, for this purpose or any other purpose, is considered out of=20
> the scope of this document." In which case, you should probably not=20
> specify a REQUEST SLA even type.
>=20
> m19)
> "Given IPFIX [RFC5102] has well defined identifier set for a large=20
> number of packet attributes, IPFIX IANA registry is=20
> "https://www.ietf.org/assignments/ipfix" chosen to specify packet=20
> classification attributes."
> Sentence is hard to parse, which is an issue for a normative part.
> The reference should probably be listed in the reference section.
>=20
> "However, since not all identifiers from IPFIX would be applicable to=20
> this proposal, only a limited set identified here can be supported by=20
> BGP SLA exchange. Any new element identifier, in future, added to the=20
> IPFIX IANA registry does not automatically mean supported for this =
proposal."
>=20
> - This probably calls for a IANA registry to identify which element=20
> identifier can be used.
> - Text should clarify that the list of accepted identifiers is defined =

> in the subsequent list (having no name and no number).
>=20
> m20) section 3 is hard to read.
> - IMO the document/section 3 would benefit from an section presenting=20
> an overview of the solution
> - section 3 have a single subsection (3.1) hence the interest of using =

> subsection is limited. Given the size of section 3 (10 pages), to=20
> improve readability I would suggest the use of multiples subsection.
>=20
> m21)
>       "The minimum policed unit (m) and maximum packet size (M)
>       parameters have no relevance for the purpose of SLA exchange.
>       Thus they MUST be ignored."
>=20
> Why specifying and sending such parameters in BGP if they MUST be=20
> ignored by the receiver?
>=20
> m22)
> " This rate indicates the minimum rate, measured in bytes of Layer 2
> (L2) datagrams per second,"
> I'm not sure why the Layer 2 size is used rather than the layer 3=20
> size. As a consequence, you need to send additional information
> (L2_OVERHEAD) which may be not needed otherwise.
> Draft cites RFC 2212 as the source of this TRAFFIC_CLASS_TSPEC=20
> parameter, and RFC 2212 use the IP datagram size.
>=20
> m23)
> "4.  Originating SLA Notification
>=20
>    The QoS attribute to advertise SLA sub-type MUST be added by the
>    originator of a BGP UPDATE message."
>=20
> I guess you don't mean that advertising this new attribute is=20
> mandatory. So please rephrase (e.g. at least :s/MUST/MAY)
>=20
> m24)  " If a BGP node is capable of processing QoS attribute, it=20
> optionally MAY process the message."
>    What message? The BGP UPDATE?
>=20
> m25)   "BGP node MUST drop SLA related sub-type from the QoS =
attribute,
> if
>    none of the AS from the destination list is in the forwarding =
path."
>=20
>    There is no AS in the forwarding path. Please rephrase.
>=20
> m26)   "5.2.  BGP Node not Capable of Processing QoS Attribute
>=20
>    If the BGP node is not capable of processing QoS attribute, it MUST
>    forward the QoS attribute message unaltered."
>=20
> This section is completely useless. It should either be removed or at=20
> the minimum should not specify a behavior. e.g.
> OLD: it MUST forward
> NEW: as per RFC4271, it will
>=20
> or should define what is meant by "processing QoS attribute". (my=20
> reading is "does not recognize")
>=20
> m27) "If advertised QoS Attribute, inside an update message, is with a =

> flag set indicating to drop that message, a receiver MUST drop message =

> if it is the last receiver, in update path, that message is advertised =
to."
> This is not extremely clear. Especially for a "MUST" behavior. Please=20
> rephrase using the protocols names of the messages/fields.
>=20
> m28)"If the advertised SLA is from the next hop, in the reverse path,=20
> the receiver may implement advertised SLA for the whole link, the link =

> could be physical or virtual link, associated with the next hop. "
>=20
> I don't understand. Please rephrase. (e.g. which next-hop?, reverse=20
> path of
> what?)
>=20
> "If NLRI advertised in update message is not of the next hop,"
> I don't understand. Please rephrase.
>=20
> m29)
>    "For cases where if earlier messages have not reached the intended=20
> receiver yet, a re-signaling is required.  A receiver may intend to=20
> request an SLA message from the originator in such case.  Since BGP=20
> messages are considered reliable, it is assumed that advertised=20
> messages always reach intended receivers.  Thus discussion of REQUEST
>    message, for this purpose or any other purpose, is considered out=20
> of the scope of this document."
> Some parsing issues.
> The text seems to self contradict:
> - "a re-signaling is required"
> - "Since BGP messages are considered reliable, it is assumed that=20
> advertised messages always reach intended receivers."
>=20
> m30)
>    "There are well-defined recommendations that exist for traffic=20
> class mapping between two technologies. "
>=20
>    Please provides references.
>=20
> m31)
> "AS2 can advertise the same or a subset of that SLA to AS3 in the=20
> context of tunnel's ip address."
> Which tunnel are you refering to?
>=20
>=20
> Nits:
> N1) ID Nits reports 1 error (Obsolete normative reference)
> N2) In a BGP context, "AS" stands for "Autonomous System" and not=20
> "Automated System"
> N3)
> "     =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>        |                                                               =
|
>        ~              Traffic Class Elements count/values              =
~
>        |                                                               =
|
>        =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "
>=20
> I feel that the figure could be updated to more accurately represent =
both
> fields (length).	Something like
>=20
> 	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>        | Traffic  Count|      Traffic Class values                     =
|
>        +-+-+-+-+-+-+-+-+                                               =
~
>        |                                                               =
|
>        ~                                                               =
~
>        |                                                               =
|
>       =20
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>=20
> N4) In general for all figures, it's easier if the name of the legend=20
> / descriptive paragraph match the name in the figure.
> e.g.
> "Class Desc Len" in figure versus "Traffic Class Descr Length" in the=20
> legend "Advertiser id TLVs" in figure versus "Optional Advertiser id=20
> TLV" in the legend "Event" in figure versus "SLA Event Type" in the =
legend ...
>=20
> N5)
> "IPFIX IANA registry is "https://www.ietf.org/assignments/ipfix" "
> May be added to the reference section.
>=20
> N6) There is a mix of usage of "octet" and "byte". For consistency,=20
> only one should be chosen ("octet" IMHO)
>=20
> N7)[CPP]      I-D.boucadair-connectivity-provisioning-profile"
> why not citing RFC 7297 instead?
>=20
>=20
> Regards,
> Bruno
>=20
> ______________________________________________________________
> ___________________________________________________________
>=20
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> Les messages electroniques etant susceptibles d'alteration, Orange=20
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>=20
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>=20


_________________________________________________________________________=
________________________________________________

Ce message et ses pieces jointes peuvent contenir des informations =
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exploites ou copies sans autorisation. Si vous avez recu ce message par =
erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les =
pieces jointes. Les messages electroniques etant susceptibles =
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altere, deforme ou falsifie. Merci.

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If you have received this email in error, please notify the sender and =
delete this message and its attachments.
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From: Jeff Tantsura <jeff.tantsura@ericsson.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)
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Subject: Re: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)
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--_000_D1849CBA99EC1jefftantsuraericssoncom_
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Support as co-author

Cheers,
Jeff

From: Susan Hares <shares@ndzh.com<mailto:shares@ndzh.com>>
Date: Friday, May 22, 2015 at 4:26 AM
To: "idr@ietf.org<mailto:idr@ietf.org>" <idr@ietf.org<mailto:idr@ietf.org>>
Subject: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 =
(5/22 to 6/5)

This begins a 2 week Working Group adoption for draft-wang-idr-eag-distribu=
tion.   You can find the draft at:

http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/

This draft proposes a new BGP-LS


   As MPLS-TE network grows, administrative Groups advertised as a

   fixed-length 32-bit Bitmask is quite constraining.  "Extended

   Administrative Group" IGP TE extensions sub-TLV defined in [RFC7308<http=
s://tools.ietf.org/html/rfc7308>]

   is introduced to provide for additional administrative groups (link

   colors) beyond the current limit of 32.



   The EAG TLV is used in addition to the Administrative Groups when a

   node wants to advertise more than 32 colors for a link.  The EAG TLV

   is optional.  The format and semantics of the 'value' fields in EAG

   TLVs correspond to the format and semantics of value fields in IGP

   extension sub-TLVs, defined in [RFC7308<https://tools.ietf.org/html/rfc7=
308>].



   +------------+---------------------+--------------+-----------------+

   |  TLV Code  |     Description     |     IS-IS    |   Defined in:   |

   |    Point   |                     |  TLV/Sub-TLV |                 |

   +------------+---------------------+--------------+-----------------+

   |    xxxx    |       Extended      |     22/xx    |    [RFC7308<https://=
tools.ietf.org/html/rfc7308>]    |

   |            |      Admin Group    |              |                 |

   +------------+---------------------+--------------+-----------------+

Please in your comments include =93support=94 or =93no support=94 for this =
draft.

Sue Hares and John Scudder.

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<div>
<div>
<div>Support as co-author</div>
<div>
<div><span style=3D"font-family: Calibri; "><br>
</span></div>
<div><span style=3D"font-family: Calibri; ">Cheers,</span></div>
<div><font class=3D"Apple-style-span" color=3D"#000000"><font class=3D"Appl=
e-style-span" face=3D"Calibri">Jeff</font></font></div>
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<span style=3D"font-weight:bold">From: </span>Susan Hares &lt;<a href=3D"ma=
ilto:shares@ndzh.com">shares@ndzh.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Friday, May 22, 2015 at 4:26 =
AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:idr@iet=
f.org">idr@ietf.org</a>&quot; &lt;<a href=3D"mailto:idr@ietf.org">idr@ietf.=
org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Idr] 2 week adoption call=
 for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)<br>
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">This begins a 2 week Working Group adoption for draf=
t-wang-idr-eag-distribution.&nbsp;&nbsp; You can find the draft at:
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><a href=3D"http://datatracker.ietf.org/doc/draft-wan=
g-idr-eag-distribution/">http://datatracker.ietf.org/doc/draft-wang-idr-eag=
-distribution/</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">This draft proposes a new BGP-LS <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; As MPLS-TE network grows, administrative Groups advertised as a<o:p><=
/o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; fixed-length 32-bit Bitmask is quite constraining.&nbsp; &quot;Extend=
ed<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; Administrative Group&quot; IGP TE extensions sub-TLV defined in [<a h=
ref=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended Adminis=
trative Groups in MPLS-TE&quot;">RFC7308</a>]<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; is introduced to provide for additional administrative groups (link<o=
:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; colors) beyond the current limit of 32.<o:p></o:p></span></pre>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; The EAG TLV is used in addition to the Administrative Groups when a<o=
:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; node wants to advertise more than 32 colors for a link.&nbsp; The EAG=
 TLV<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; is optional.&nbsp; The format and semantics of the 'value' fields in =
EAG<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; TLVs correspond to the format and semantics of value fields in IGP<o:=
p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; extension sub-TLVs, defined in [<a href=3D"https://tools.ietf.org/htm=
l/rfc7308" title=3D"&quot;Extended Administrative Groups in MPLS-TE&quot;">=
RFC7308</a>].<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black"><o:p>&n=
bsp;</o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; &#43;------------&#43;---------------------&#43;--------------&#43;--=
---------------&#43;<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; |&nbsp; TLV Code&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; Description&nbsp;&nb=
sp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; IS-IS&nbsp;&nbsp;&nbsp; |&nbsp;&n=
bsp; Defined in:&nbsp;&nbsp; |<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; |&nbsp;&nbsp;&nbsp; Point&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; |&nbsp; TLV/Sub-TLV |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></sp=
an></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; &#43;------------&#43;---------------------&#43;--------------&#43;--=
---------------&#43;<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; |&nbsp;&nbsp;&nbsp; xxxx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Extended&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp=
; 22/xx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; [<a href=3D"https://tools.iet=
f.org/html/rfc7308" title=3D"&quot;Extended Administrative Groups in MPLS-T=
E&quot;">RFC7308</a>]&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;|=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Admin Group&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp; |<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span style=3D"color:black">&nbsp;&=
nbsp; &#43;------------&#43;---------------------&#43;--------------&#43;--=
---------------&#43;<o:p></o:p></span></pre>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Please in your comments include =93support=94 or =93=
no support=94 for this draft.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Sue Hares and John Scudder. <o:p></o:p></p>
</div>
</div>
</div>
</blockquote>
</span>
</body>
</html>

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From: Uma Chunduri <uma.chunduri@ericsson.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, Jeff Tantsura <jeff.tantsura@ericsson.com>, Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)
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Subject: Re: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)
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Acee:

=20

This sounds like a good idea.=20

=20

Sue=20

=20

From: Acee Lindem (acee) [mailto:acee@cisco.com]=20
Sent: Friday, May 22, 2015 11:54 AM
To: Jeff Tantsura; Susan Hares; idr@ietf.org
Subject: Re: [Idr] 2 week adoption call for =
draft-wang-idr-eag-distribution-02 (5/22 to 6/5)

=20

I support with one comment.

=20

In the future, I=E2=80=99m wondering if we could standardize the BGP =
Link State encoding in the corresponding IGP documents? It seems like it =
would be possible since it is simply the TLV mapping and the  IANA code =
point(s).=20

=20

Thanks,

Acee

=20

From: Jeff Tantsura <jeff.tantsura@ericsson.com>
Date: Friday, May 22, 2015 at 11:45 AM
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Subject: Re: [Idr] 2 week adoption call for =
draft-wang-idr-eag-distribution-02 (5/22 to 6/5)

=20

Support as co-author

=20

Cheers,

Jeff

=20

From: Susan Hares <shares@ndzh.com>
Date: Friday, May 22, 2015 at 4:26 AM
To: "idr@ietf.org" <idr@ietf.org>
Subject: [Idr] 2 week adoption call for =
draft-wang-idr-eag-distribution-02 (5/22 to 6/5)

=20

This begins a 2 week Working Group adoption for =
draft-wang-idr-eag-distribution.   You can find the draft at:=20

=20

http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/

=20

This draft proposes a new BGP-LS=20

=20

   As MPLS-TE network grows, administrative Groups advertised as a
   fixed-length 32-bit Bitmask is quite constraining.  "Extended
   Administrative Group" IGP TE extensions sub-TLV defined in [RFC7308 =
<https://tools.ietf.org/html/rfc7308> ]
   is introduced to provide for additional administrative groups (link
   colors) beyond the current limit of 32.

=20

=20

   The EAG TLV is used in addition to the Administrative Groups when a
   node wants to advertise more than 32 colors for a link.  The EAG TLV
   is optional.  The format and semantics of the 'value' fields in EAG
   TLVs correspond to the format and semantics of value fields in IGP
   extension sub-TLVs, defined in [RFC7308 =
<https://tools.ietf.org/html/rfc7308> ].
=20
   +------------+---------------------+--------------+-----------------+
   |  TLV Code  |     Description     |     IS-IS    |   Defined in:   |
   |    Point   |                     |  TLV/Sub-TLV |                 |
   +------------+---------------------+--------------+-----------------+
   |    xxxx    |       Extended      |     22/xx    |    [RFC7308 =
<https://tools.ietf.org/html/rfc7308> ]    |
   |            |      Admin Group    |              |                 |
   +------------+---------------------+--------------+-----------------+

=20

Please in your comments include =E2=80=9Csupport=E2=80=9D or =E2=80=9Cno =
support=E2=80=9D for this draft.=20

=20

Sue Hares and John Scudder.=20


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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'color:#1F497D'>Acee:<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'color:#1F497D'>This sounds like a good =
idea. <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'color:#1F497D'>Sue =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Acee Lindem (acee) [mailto:acee@cisco.com] <br><b>Sent:</b> Friday, May =
22, 2015 11:54 AM<br><b>To:</b> Jeff Tantsura; Susan Hares; =
idr@ietf.org<br><b>Subject:</b> Re: [Idr] 2 week adoption call for =
draft-wang-idr-eag-distribution-02 (5/22 to =
6/5)<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'>I support with one =
comment.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'>In the future, I=E2=80=99m =
wondering if we could standardize the BGP Link State encoding in the =
corresponding IGP documents? It seems like it would be possible since it =
is simply the TLV mapping and the &nbsp;IANA code =
point(s).&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'>Thanks,<o:p></o:p></span></p></div=
><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'>Acee<o:p></o:p></span></p></div><d=
iv><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt =
0in 0in 0in'><p class=3DMsoNormal><b><span style=3D'color:black'>From: =
</span></b><span style=3D'color:black'>Jeff Tantsura &lt;<a =
href=3D"mailto:jeff.tantsura@ericsson.com">jeff.tantsura@ericsson.com</a>=
&gt;<br><b>Date: </b>Friday, May 22, 2015 at 11:45 AM<br><b>To: =
</b>Susan Hares &lt;<a =
href=3D"mailto:shares@ndzh.com">shares@ndzh.com</a>&gt;, &quot;<a =
href=3D"mailto:idr@ietf.org">idr@ietf.org</a>&quot; &lt;<a =
href=3D"mailto:idr@ietf.org">idr@ietf.org</a>&gt;<br><b>Subject: </b>Re: =
[Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 =
to 6/5)<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<blockquote style=3D'border:none;border-left:solid #B5C4DF =
4.5pt;padding:0in 0in 0in 4.0pt;margin-left:3.75pt;margin-right:0in' =
id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"><div><div><div><div><div><p =
class=3DMsoNormal><span style=3D'font-size:10.5pt;color:black'>Support =
as co-author<o:p></o:p></span></p></div><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'>Cheers,<o:p></o:p></span></p></div=
><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'>Jeff<o:p></o:p></span></p></div></=
div></div></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt =
0in 0in 0in'><p class=3DMsoNormal><b><span style=3D'color:black'>From: =
</span></b><span style=3D'color:black'>Susan Hares &lt;<a =
href=3D"mailto:shares@ndzh.com">shares@ndzh.com</a>&gt;<br><b>Date: =
</b>Friday, May 22, 2015 at 4:26 AM<br><b>To: </b>&quot;<a =
href=3D"mailto:idr@ietf.org">idr@ietf.org</a>&quot; &lt;<a =
href=3D"mailto:idr@ietf.org">idr@ietf.org</a>&gt;<br><b>Subject: =
</b>[Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 =
(5/22 to 6/5)<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;color:black'><o:p>&nbsp;</o:p></span></p></div>=
<blockquote style=3D'border:none;border-left:solid #B5C4DF =
4.5pt;padding:0in 0in 0in 4.0pt;margin-left:3.75pt;margin-right:0in' =
id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"><div><div><p =
class=3DMsoNormal><span style=3D'color:black'>This begins a 2 week =
Working Group adoption for draft-wang-idr-eag-distribution.&nbsp;&nbsp; =
You can find the draft at: <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'color:black'><a =
href=3D"http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/"=
>http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/</a><o:p=
></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'color:black'>This draft proposes a new =
BGP-LS <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; As MPLS-TE network grows, =
administrative Groups advertised as a<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; fixed-length 32-bit Bitmask is quite =
constraining.&nbsp; &quot;Extended<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; Administrative Group&quot; IGP TE =
extensions sub-TLV defined in [<a =
href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended =
Administrative Groups in =
MPLS-TE&quot;">RFC7308</a>]<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; is introduced to provide for =
additional administrative groups (link<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; colors) beyond the current limit of =
32.<o:p></o:p></span></pre><p class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; The EAG TLV is used in addition to =
the Administrative Groups when a<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; node wants to advertise more than 32 =
colors for a link.&nbsp; The EAG TLV<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; is optional.&nbsp; The format and =
semantics of the 'value' fields in EAG<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; TLVs correspond to the format and =
semantics of value fields in IGP<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; extension sub-TLVs, defined in [<a =
href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended =
Administrative Groups in =
MPLS-TE&quot;">RFC7308</a>].<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
+------------+---------------------+--------------+-----------------+<o:p=
></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; |&nbsp; TLV Code&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp; Description&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp; IS-IS&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp; Defined =
in:&nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; Point&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp; TLV/Sub-TLV =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
+------------+---------------------+--------------+-----------------+<o:p=
></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; =
xxxx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Extended&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; =
22/xx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; [<a =
href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended =
Administrative Groups in MPLS-TE&quot;">RFC7308</a>]&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Admin =
Group&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'color:black'>&nbsp;&nbsp; =
+------------+---------------------+--------------+-----------------+<o:p=
></o:p></span></pre><p class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'color:black'>Please in your comments =
include =E2=80=9Csupport=E2=80=9D or =E2=80=9Cno support=E2=80=9D for =
this draft. <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'color:black'>Sue Hares and John =
Scudder. =
<o:p></o:p></span></p></div></div></blockquote></div></div></blockquote><=
/div></body></html>
------=_NextPart_000_01A5_01D0949E.7A273D80--


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From: Qin Wu <bill.wu@huawei.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, Jeff Tantsura <jeff.tantsura@ericsson.com>, Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)
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From nobody Tue May 26 06:37:46 2015
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Date: Tue, 26 May 2015 09:37:43 -0400
From: Jon Mitchell <jrmitche@puck.nether.net>
To: Daniel Walton <dwalton@cumulusnetworks.com>
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References: <20150516192556.GB73434@Vurt.local> <m2pp60ur4m.wl%randy@psg.com> <9D75C21F-B76D-451C-B367-2543C94EBEB7@exa-networks.co.uk> <m2fv6vv9nm.wl%randy@psg.com> <F59C5345-A2EF-4BC7-AA5B-56F2D5C94562@exa-networks.co.uk> <CABg5FUVqOXkmzjGWZkmQ8BT63SU+kKY-z2bwpPOZcDZM_fi5Kw@mail.gmail.com> <5F4B9C3A-45AE-445B-9BFC-3755E25AD901@exa-networks.co.uk> <CA+b+ER=EOgNSCXkhqrP=TkLeDSm0s7_7_1kj9X=xe40y3=uX-A@mail.gmail.com> <20431D0B-7BEE-427D-B5AD-C3CB9AD4F7B8@exa-networks.co.uk> <CANL=f0h5v4-oVSgL9nJeVL3HqSaimj2EASgGh7Wvjc=MZqptxw@mail.gmail.com>
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Cc: idr wg <idr@ietf.org>
Subject: Re: [Idr] draft-walton-bgp-hostname-capability-00
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On 17/05/15 08:59 -0400, Daniel Walton wrote:
> IMO whether a vendor sends the capability by default or not, is a decision
> left up to the vendor and not part of the draft.  We've been trying to
> avoid adding new configuartion knobs as much as possible so we send it by
> default.

I support this draft generally, it provides a useful feature for DC
fabrics and many other troubleshooting use cases for i/eBGP.  However, I
think the draft should say "implementations SHOULD provide a knob for
disabling the sending/use of received information in this capability".
I can imagine there are a number of organizations that for various
reasons may want to use this only on some peerings or not at all, or
don't want their troubleshooting output mangled by information from
various peers.  I don't see this relationship of where to turn this
on/off easily tied to protocol differences (iBGP/eBGP) or other
attributes.  Also agree with the comments that hostname only in ASCII
should be sufficient.

-Jon


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From: "Shitanshu Shah (svshah)" <svshah@cisco.com>
To: Susan Hares <shares@ndzh.com>, "Keyur Patel (keyupate)" <keyupate@cisco.com>, "sbajaj@juniper.net" <sbajaj@juniper.net>, "luis.tomotaki@verizon.com" <luis.tomotaki@verizon.com>, "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>
Thread-Topic: [Idr] [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05
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Date: Tue, 26 May 2015 23:50:40 +0000
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Subject: Re: [Idr] [RTG-DIR] RtgDir review: draft-ietf-idr-sla-exchange-05
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Thank you Bruno for thorough review and comments..

We will take a look at them and respond soon..

Regards,
Shitanshu

On 5/22/15, 8:43 AM, "Susan Hares" <shares@ndzh.com> wrote:

>Shitanshu, Keyur, Sandeep, Luis, and Mohamed:
>
>Would you please address the 10 major points (see below) that Bruno
>raised in his routing directorate review?  The draft will not be
>forwarded to the IESG for publication until you address the concerns on
>the mail list?=20
>
>You can address the concern by changing your document or indicate why you
>think your original text/design is reasonable.  I would appreciate your
>quick attention on this topic.
>
>Thank you,=20
>
>Sue=20
>
>
>> Document: draft-ietf-idr-sla-exchange-05
>> Reviewer: Bruno Decraene
>> Review Date: 22/05/2015
>> IETF LC End Date: 02/03/2015
>> Intended Status: Standards Track
>>=20
>> Summary:  I have significant concerns about this document and
>> recommend that the Routing ADs discuss these issues further with the
>>authors.
>>=20
>> (Or the chairs as I see that this document has not yet been passed to
>> the
>> ADs)
>>=20
>> Comments:
>> In general, the readability of the document is acceptable but could be
>> improved, both from a language and technical precision point of view.
>> (examples below).
>> However, there are some normative parts of this Standard Track
>> specification that I could not understand.
>>=20
>> Major:
>> M1) The Introduction states
>> "In a multi-vendor network, translating SLAs into technology-specific
>> and vendor-specific configuration requires to consider specificities
>> of each vendor.
>> There does not exist any standard protocol to translate SLA agreements
>> into technical clauses and configurations and thus both the steps of
>> out of band learning of negotiated SLA and provisioning them in a
>> vendor specific language can be complex and error-prone."
>>=20
>> - I guess some would use NETCONF/YANG to address this. It could be
>> questioned why BGP has been preferred. Especially since:
>> 	- in the VPN context (using a lot of QoS and the uses cases described
>> in the document) many customer connections use static routing rather
>> than eBGP. Hence this specification would not be enough to distribute
>> SLA and would require another protocol.
>> 	- QoS is only one part of the configuration effort. Why using
>> different protocols to configure different aspects?
>>=20
>> - This may be related to draft-l3vpn-service-yang and the L3VPN
>> Service Model WG (l3sm). May be some form of coordination would be
>>beneficial.
>>=20
>> M2)"The exception is where a BGP speaker, in the middle of an update
>> path to the destination AS, aggregates prefixes. We will refer this
>> middle BGP speaker, that aggregates routes, as an Aggregator.
>> Aggregator is then required to insert original NLRI details in the
>>optional advertiser field"
>>=20
>> If you refer to the use of AS_SET, RFC6472 recommends against the use
>> of AS_SET. So, I'm not sure that there is a need to add complexity in
>> this specification in order to handle route aggregation.
>> If removed, "section 5.3 Aggregator" may also be removed.
>>=20
>> M4)
>>  "Traffic Class Description
>>         Ascii Description of the Traffic Class"
>>=20
>> Should it be UTF-8?
>>=20
>> M5) SLA definition
>>  It would be good to define what a SLA is. Especially since this whole
>> goal of the draft is to advertise SLA in BGP. Citing an individual
>> draft [CPP] is not enough to have an agreed on definition, especially
>>for a STD track RFC.
>>  Since QoS is not new in the IETF, there is probably a document
>> defining it (or using a more popular terminology).
>> Looking in google, I don't really see matches for "IETF SLA" (outside
>> of documents written by the authors).
>> Wikipedia seems to give a quite different definition, much wider than
>> diffserv specific parameters which seems to be the main point of this
>> BGP
>> attribute:
>> "A service-level agreement (SLA) is a part of a service
>> contract[disambiguation needed] where a service is formally defined.
>> Particular aspects of the service - scope, quality, responsibilities -
>> are agreed between the service provider and the service user. A common
>> feature of an SLA is a contracted delivery time (of the service or
>> performance). As an example, Internet service providers and telcos
>> will commonly include service level agreements within the terms of
>> their contracts with customers to define the level(s) of service being
>> sold in plain language terms. In this case the SLA will typically have
>> a technical definition in terms of mean time between failures (MTBF),
>> mean time to repair or mean time to recovery (MTTR); identifying which
>> party is responsible for reporting faults or paying fees;
>> responsibility for various data rates; throughput; jitter; or similar
>>measurable details.."
>>=20
>> M6)
>>  "   Traffic Class Service (optional),
>>         16-bit          =3D type of the field
>>         variable-length =3D based on type of the service"
>>=20
>> Please specify the content of the "variable-length" field.
>> If it only contains the Data Type of the IPFIX Information Elements,
>> I'm not sure how the encoding supports, on the receiving side, the
>> skipping of unknown ElementID.
>> Given that I also don't see an end to end negotiation channel for the
>> BGP speaker to known the capabilities of the BGP receiver, I don't see
>> how the specification will support the introduction of new Traffic
>> Class Services in the future.
>>=20
>> M7) NLRI
>> I don't see the relation between the QoS attribute and the NLRI.
>> - Is the QoS attribute only applicable to the NLRI advertised? If so
>> what is the relation with destinationIP* advertised in the classifier
>> Element? Should they be restricted to more specifics of the advertised
>>NLRI?
>> - Also the QoS attribute may instruct "to drop entire BGP update
>> message [Note that it is an indication to drop entire update message,
>> not only QoS attribute]". This means that the NLRI will not be
>> propagated, hence routed, anymore, which seems strange. To preserve
>> routing of the NLRI, do the QoS attribute require to advertise a less
>> specific prefix (with no QoS attribute) in addition? Or to use
>> ADD_PATH to advertise the NLRI multiple times (with & without the QoS
>>attribute).
>>=20
>> Possibly same question for the relation between the QoS attribute and
>> the AFI/SAFI of the BGP UPDATE. Is the QoS attribute to be understood
>> in the context of the AFI/SAFI or not? e.g. if the classifier element
>> is the ipDiffServCodePoint does it match all protocols or only the one
>> of the AFI/SAFI?
>>=20
>> M8) Error handling
>> Current text says that error handling MAY use attribute discard or MAY
>> use treat as withdraw.
>> This seems underspecified as one implementation would be free to do
>> nothing, while another could do session reset. This would open many
>> BGP session reset in real networks.
>> Please specific what must be done.
>> Besides, other part of the document provides some more
>> specific/different error handling. e.g. "If there are more than one
>> such Traffic Classes present then advertised SLA parameters MUST be
>>ignored."
>> Finally, the spec needs to define when the new attribute is considered
>> malformed.
>> On an editorial note, I would prefer a dedicate section related to
>> error handling.
>>=20
>> M9) security consideration may require some discussion.
>> "There is a potential for mis-behaved AS to advertise wrong SLA,
>> stealing identity of another AS."
>> Agreed. But there are probably other attack vectors (e.g. modifying
>> the attribute during propagation, setting parameters to instruct BGP
>> to drop the message (as this seems alllowed by the specification)...)
>>=20
>> "This resembles to problems already identified and resolved, in the
>> routing world, thru reverse path forwarding check."
>> "Resembles" is not enough. "Resolved" is probably a bit quick.
>>=20
>> "One proposal, inline to RPF, to resolve such threats is to have each
>> BGP speaker node, in the forwarding path, perform reverse path check
>> on source AS."
>> If this is a specification, it should be described in the document
>> (quickly citing it in the security section is not enough).
>> It's also a bit short in term of specification. e.g. I don't see
>> "source AS" in the forwarding path (neither in the packet nor in the
>> FIB)
>>=20
>> "Since we expect these messages to originate and distributed in the
>> managed network, there should not be any risks for identity theft."
>> If you restrict the use of this specification/ATTRIBUTE in "managed
>> network", this needs to be clarified from the beginning (and not at
>> this very end of the document), and the specification should take
>> measure to ensure that this attribute is not received from/leaked
>> outside of this "managed network".
>> Defining "managed network" may also help, especially since the
>> proposition involves multiple ASes and multiple organisations.
>> (otherwise, you need to handle the case when this attribute is used
>> outside of "managed network" and therefore consider the security
>> implications)
>>=20
>> M10) IANA section is under specified.
>> e.g. you should:
>> - states the name of the registry that you want to create or update.
>> - states the name of the new entries in existing registries.
>> - define all your new registries. (e.g. you don't have ones for new
>> QoS TLV subtypes (defined in =A73.1), Optional Advertised id TLV, SLA
>> event Type...)
>> - define the registration policy of those new registries.
>>=20
>> Reading RFC5226 may help.
>>=20
>>=20
>> Minor (some not so minor):
>> m1) From an editorial standpoint, the document may benefit from an
>> english language review.
>>   - Some sentences are hard to parse (at least for me). e.g. "The need
>> to exchange SLA parameters between domains (Automated Systems (AS)),
>> where in use-cases described in this document, BGP is a suitable
>> protocol for inter-domain exchange [RFC4271][RFC4364].
>>   - Adding a full point "." at the end of each sentence may help the
>>parsing.
>>   - IMHO some sentences could be rewritten to improve readability. e.g.
>>   OLD:
>>         highest order bit (bit 0) -
>>             It defines if update message MUST be dropped (if set to 1)
>>             without updating routing information base, when this is the
>>             last BGP receiver from the list of destination ASes this
>>             attribute is announced to, or MUST announce (if set to 0)
>>             further to BGP peers
>>   NEW
>>         highest order bit (bit 0) -
>> 			This flags defines how update message must be handled by the last
>> BGP receiver in the list of destination ASes.
>>             If set (1) update message MUST be dropped without updating
>> routing information base.
>> 			If cleared (0) update message MUST be further advertised to BGP
>> peers.
>>=20
>>   On a side note, at this point in the document, it's not crystal
>> clear what you mean by "update message". The QoS Attribute TLV? The QoS
>>BGP attribute?
>> The BGP UPDATE message? In general, in the document, please use the
>> protocols names of the messages/fields.
>>   - "SLA sub-type specific value field details." I guess you mean
>> :s/specific/specifies.
>>=20
>> m2)
>> OLD: Remaining bits are currently unused and MUST be set to 0
>> NEW: The lower-order seven bits of the Attribute Flags octet are unused.
>> They MUST be zero when sent and MUST be ignored when received.
>> (Proposed text is a copy/past from RFC 4271. You are free to use
>> another text but please specify the behaviour on the receiving side as
>> we have seen BGP session reset in the Internet which a much clearer
>> sentence.)
>>=20
>> m3) That's not specific to this document, but I would find useful to
>> have the related implementation report draft be referenced in the
>> informative reference section.
>>=20
>> m4) "sub type Length" Please specify exactly what part of the message
>> is covered by the length (as some IETF spec use the length of the
>> value field, while some other use the length of the type+length+value
>>fields.
>>=20
>> m5) "32-bit source AS (Advertiser)" The word "advertiser" may be
>> misleading. (cf draft-hares-idr-update-attrib-low-bits-fix). RFC 4271
>> uses "Originating speaker" (SIDR seems also to use "Origin".
>> Multiple occurrences in the draft.
>>=20
>> m6)  "0 =3D ignore Source and Destination AS list from this Value field.
>>             Instead refer to Source and Destination AS as defined by BGP
>>             message"
>> I'm not sure what is meant by the second sentence. Please use the
>> specific names of BGP messages and fields.
>>=20
>> m7) "format of the SLA message"
>> Giving names and number to figures could be considered.
>> So does adding the memory axis:
>>     0                   1                   2                   3
>>     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>>=20
>>=20
>> m8)
>> "    Optional advertiser id total len
>>         16-bit Source address identifier (optional)."
>>=20
>> I read this as the field "Optional advertiser id total len" contains a
>> 16-bit Source address identifier.
>> While this field probably contain the length of "something". Please
>> check/clarify.
>>=20
>> m9)
>>     "Optional Advertiser id TLV
>>         4-bit type"
>>=20
>> You need to specify the size of the "Length" field. Especially since
>> you introduce a somewhat unusual size of the "Type field" and some
>> people may assume that the size of the "length" field is of the same
>> size (4-bit), while some others may believe its the usual 1-octet.
>>=20
>> m10)"    Destination AS count
>>         32-bit destination AS count to take variable length AS list."
>> I guess you mean:
>> number of destination ASes
>> This field indicates the number of destination AS present in the
>> Destination AS list
>>=20
>> m11) "SLA Id"
>> The text under "SLA Id" mixes text related to "SLA Id " and text
>> related to "Content". Please split the text.
>>=20
>> m12) I don't see a description of the filed "Content as per SLA Event"
>>=20
>> m13)  "    SLA Length
>>         12-bits"
>> Please specify what is covered/measured by this length field.
>>=20
>> m14)
>> "    Direction
>>         0x1 =3D incoming, from destination AS towards source AS
>>         0x2 =3D outgoing, from source AS towards destination AS"
>> I find the terms "incoming" and "outcoming" a bit misleading. e.g.
>> the direction "from source AS towards destination AS" seems to be:
>> - outgoing in the source AS
>> - ingoing in the destination AS
>>=20
>> m15)    "Traffic Class Descr Length
>>         08-bit, size of the length"
>> proposition  :s/size of the length/ length of XXX
>>=20
>> m16) In section 3, I don't see the specification of the REQUEST SLA
>> even type.
>> At the end of the document, it's said that "discussion of REQUEST
>> message, for this purpose or any other purpose, is considered out of
>> the scope of this document." In which case, you should probably not
>> specify a REQUEST SLA even type.
>>=20
>> m19)
>> "Given IPFIX [RFC5102] has well defined identifier set for a large
>> number of packet attributes, IPFIX IANA registry is
>> "https://www.ietf.org/assignments/ipfix" chosen to specify packet
>> classification attributes."
>> Sentence is hard to parse, which is an issue for a normative part.
>> The reference should probably be listed in the reference section.
>>=20
>> "However, since not all identifiers from IPFIX would be applicable to
>> this proposal, only a limited set identified here can be supported by
>> BGP SLA exchange. Any new element identifier, in future, added to the
>> IPFIX IANA registry does not automatically mean supported for this
>>proposal."
>>=20
>> - This probably calls for a IANA registry to identify which element
>> identifier can be used.
>> - Text should clarify that the list of accepted identifiers is defined
>> in the subsequent list (having no name and no number).
>>=20
>> m20) section 3 is hard to read.
>> - IMO the document/section 3 would benefit from an section presenting
>> an overview of the solution
>> - section 3 have a single subsection (3.1) hence the interest of using
>> subsection is limited. Given the size of section 3 (10 pages), to
>> improve readability I would suggest the use of multiples subsection.
>>=20
>> m21)
>>       "The minimum policed unit (m) and maximum packet size (M)
>>       parameters have no relevance for the purpose of SLA exchange.
>>       Thus they MUST be ignored."
>>=20
>> Why specifying and sending such parameters in BGP if they MUST be
>> ignored by the receiver?
>>=20
>> m22)
>> " This rate indicates the minimum rate, measured in bytes of Layer 2
>> (L2) datagrams per second,"
>> I'm not sure why the Layer 2 size is used rather than the layer 3
>> size. As a consequence, you need to send additional information
>> (L2_OVERHEAD) which may be not needed otherwise.
>> Draft cites RFC 2212 as the source of this TRAFFIC_CLASS_TSPEC
>> parameter, and RFC 2212 use the IP datagram size.
>>=20
>> m23)
>> "4.  Originating SLA Notification
>>=20
>>    The QoS attribute to advertise SLA sub-type MUST be added by the
>>    originator of a BGP UPDATE message."
>>=20
>> I guess you don't mean that advertising this new attribute is
>> mandatory. So please rephrase (e.g. at least :s/MUST/MAY)
>>=20
>> m24)  " If a BGP node is capable of processing QoS attribute, it
>> optionally MAY process the message."
>>    What message? The BGP UPDATE?
>>=20
>> m25)   "BGP node MUST drop SLA related sub-type from the QoS attribute,
>> if
>>    none of the AS from the destination list is in the forwarding path."
>>=20
>>    There is no AS in the forwarding path. Please rephrase.
>>=20
>> m26)   "5.2.  BGP Node not Capable of Processing QoS Attribute
>>=20
>>    If the BGP node is not capable of processing QoS attribute, it MUST
>>    forward the QoS attribute message unaltered."
>>=20
>> This section is completely useless. It should either be removed or at
>> the minimum should not specify a behavior. e.g.
>> OLD: it MUST forward
>> NEW: as per RFC4271, it will
>>=20
>> or should define what is meant by "processing QoS attribute". (my
>> reading is "does not recognize")
>>=20
>> m27) "If advertised QoS Attribute, inside an update message, is with a
>> flag set indicating to drop that message, a receiver MUST drop message
>> if it is the last receiver, in update path, that message is advertised
>>to."
>> This is not extremely clear. Especially for a "MUST" behavior. Please
>> rephrase using the protocols names of the messages/fields.
>>=20
>> m28)"If the advertised SLA is from the next hop, in the reverse path,
>> the receiver may implement advertised SLA for the whole link, the link
>> could be physical or virtual link, associated with the next hop. "
>>=20
>> I don't understand. Please rephrase. (e.g. which next-hop?, reverse
>> path of
>> what?)
>>=20
>> "If NLRI advertised in update message is not of the next hop,"
>> I don't understand. Please rephrase.
>>=20
>> m29)
>>    "For cases where if earlier messages have not reached the intended
>> receiver yet, a re-signaling is required.  A receiver may intend to
>> request an SLA message from the originator in such case.  Since BGP
>> messages are considered reliable, it is assumed that advertised
>> messages always reach intended receivers.  Thus discussion of REQUEST
>>    message, for this purpose or any other purpose, is considered out
>> of the scope of this document."
>> Some parsing issues.
>> The text seems to self contradict:
>> - "a re-signaling is required"
>> - "Since BGP messages are considered reliable, it is assumed that
>> advertised messages always reach intended receivers."
>>=20
>> m30)
>>    "There are well-defined recommendations that exist for traffic
>> class mapping between two technologies. "
>>=20
>>    Please provides references.
>>=20
>> m31)
>> "AS2 can advertise the same or a subset of that SLA to AS3 in the
>> context of tunnel's ip address."
>> Which tunnel are you refering to?
>>=20
>>=20
>> Nits:
>> N1) ID Nits reports 1 error (Obsolete normative reference)
>> N2) In a BGP context, "AS" stands for "Autonomous System" and not
>> "Automated System"
>> N3)
>> "     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>        |                                                               |
>>        ~              Traffic Class Elements count/values              ~
>>        |                                                               |
>>       =20
>>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "
>>=20
>> I feel that the figure could be updated to more accurately represent
>>both
>> fields (length).	Something like
>>=20
>> 	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>        | Traffic  Count|      Traffic Class values                     |
>>        +-+-+-+-+-+-+-+-+                                               ~
>>        |                                                               |
>>        ~                                                               ~
>>        |                                                               |
>>       =20
>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>=20
>> N4) In general for all figures, it's easier if the name of the legend
>> / descriptive paragraph match the name in the figure.
>> e.g.
>> "Class Desc Len" in figure versus "Traffic Class Descr Length" in the
>> legend "Advertiser id TLVs" in figure versus "Optional Advertiser id
>> TLV" in the legend "Event" in figure versus "SLA Event Type" in the
>>legend ...
>>=20
>> N5)
>> "IPFIX IANA registry is "https://www.ietf.org/assignments/ipfix" "
>> May be added to the reference section.
>>=20
>> N6) There is a mix of usage of "octet" and "byte". For consistency,
>> only one should be chosen ("octet" IMHO)
>>=20
>> N7)[CPP]      I-D.boucadair-connectivity-provisioning-profile"
>> why not citing RFC 7297 instead?
>>=20
>>=20
>> Regards,
>> Bruno
>>=20
>> ______________________________________________________________
>> ___________________________________________________________
>>=20
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>>=20
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>>=20
>
>
>__________________________________________________________________________
>_______________________________________________
>
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>erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les
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>altere, deforme ou falsifie. Merci.
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From nobody Thu May 28 12:18:21 2015
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Subject: [Idr] I-D Action: draft-ietf-idr-legacy-rtc-05.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Inter-Domain Routing Working Group of the IETF.

        Title           : Automatic Route Target Filtering for legacy PEs
        Authors         : Pradosh Mohapatra
                          Arjun Sreekantiah
                          Keyur Patel
                          Burjiz Pithawala
                          Alton Lo
	Filename        : draft-ietf-idr-legacy-rtc-05.txt
	Pages           : 9
	Date            : 2015-05-28

Abstract:
   This document describes a simple procedure that allows "legacy" BGP
   speakers to exchange route target membership information in BGP
   without using mechanisms specified in [RFC4684].  The intention of
   the proposed technique is to help in partial deployment scenarios and
   is not meant to replace [RFC4684].


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-idr-legacy-rtc-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-legacy-rtc-05


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From nobody Fri May 29 13:01:23 2015
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From: "Thomas Mangin" <thomas.mangin@exa-networks.co.uk>
To: "IETF IDR Working Group" <idr@ietf.org>
Date: Fri, 29 May 2015 21:01:03 +0100
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Subject: [Idr] clarification about RFC5575
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--=_MailMate_56FEDEF7-5557-411F-8E8F-9F9AAFF47159_=
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Hello,

When comparing Flow NLRI (not for firewall ordering but to determine if a=
 rule need to be sent or not), should all the components of the NLRI be c=
ompared or only the source/destination pair. i.e.: should a speaker send =
multiple rules for the same src/dst pair (or single destination or source=
).

Thank you very much,

Thomas

http://exa.net.uk/about/contact-us
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Comment: GPGTools - http://gpgtools.org

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From nobody Fri May 29 13:07:47 2015
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Subject: Re: [Idr] clarification about RFC5575
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Hi Thomas,

All  elements of the NLRI define it not only two selected and option ones
like src or dst. In fact NLRI may not contain those at all to still be a
valid one.

Quote:

The Flow specification NLRI-type consists of several optional
subcomponents. A specific packet is considered to match the flow
specification when it matches the intersection (AND) of all the
components present in the specification.


Cheers,

R.




On Fri, May 29, 2015 at 10:01 PM, Thomas Mangin <
thomas.mangin@exa-networks.co.uk> wrote:

> Hello,
>
> When comparing Flow NLRI (not for firewall ordering but to determine if a
> rule need to be sent or not), should all the components of the NLRI be
> compared or only the source/destination pair. i.e.: should a speaker send
> multiple rules for the same src/dst pair (or single destination or source).
>
> Thank you very much,
>
> Thomas
>
> http://exa.net.uk/about/contact-us
> _______________________________________________
> Idr mailing list
> Idr@ietf.org
> https://www.ietf.org/mailman/listinfo/idr
>
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,he=
lvetica,sans-serif;font-size:small">Hi Thomas,</div><div class=3D"gmail_def=
ault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br>=
</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,san=
s-serif;font-size:small">All =C2=A0elements of the NLRI define it not only =
two selected and option ones like src or dst. In fact NLRI may not contain =
those at all to still be a valid one.</div><div class=3D"gmail_default" sty=
le=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><di=
v class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;f=
ont-size:small">Quote:</div><div class=3D"gmail_default" style=3D"font-fami=
ly:arial,helvetica,sans-serif;font-size:small"><br></div><div class=3D"gmai=
l_default" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"=
><pre class=3D"" style=3D"font-size:13.3333330154419px;margin-top:0px;margi=
n-bottom:0px;color:rgb(0,0,0)">The Flow specification NLRI-type consists of=
 several optional
subcomponents. A specific packet is considered to match the flow specificat=
ion when it matches the intersection (AND) of all the components present in=
 the specification.</pre><pre class=3D"" style=3D"font-size:13.333333015441=
9px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><br></pre><pre class=
=3D"" style=3D"font-size:13.3333330154419px;margin-top:0px;margin-bottom:0p=
x;color:rgb(0,0,0)">Cheers,</pre><pre class=3D"" style=3D"font-size:13.3333=
330154419px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)">R.</pre><pre=
 class=3D"" style=3D"font-size:13.3333330154419px;margin-top:0px;margin-bot=
tom:0px;color:rgb(0,0,0)"><br></pre><pre class=3D"" style=3D"font-size:13.3=
333330154419px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><br></pre=
></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On F=
ri, May 29, 2015 at 10:01 PM, Thomas Mangin <span dir=3D"ltr">&lt;<a href=
=3D"mailto:thomas.mangin@exa-networks.co.uk" target=3D"_blank">thomas.mangi=
n@exa-networks.co.uk</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex=
">Hello,<br>
<br>
When comparing Flow NLRI (not for firewall ordering but to determine if a r=
ule need to be sent or not), should all the components of the NLRI be compa=
red or only the source/destination pair. i.e.: should a speaker send multip=
le rules for the same src/dst pair (or single destination or source).<br>
<br>
Thank you very much,<br>
<br>
Thomas<br>
<br>
<a href=3D"http://exa.net.uk/about/contact-us" target=3D"_blank">http://exa=
.net.uk/about/contact-us</a><br>___________________________________________=
____<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
<br></blockquote></div><br></div>

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Hello Robert,

Thank you for this answer. This was also my understanding but this text 
applies to how the NLRI should be interpreted when matching traffic, not 
how it should be interpreted when sent as a BGP UPDATE.
I have been told that some implementations behaved differently (i.e.: 
would consider two Flows with similar SRC/DEST but different other 
components such as protocol as similar) and as I can not verify, I 
thought prudent to seek clarification as ExaBGP’s implementation is 
not behaving correctly and I need fixing ( I expected it to behave this 
way tho ).

Sincerely,

Thomas

http://exa.net.uk/about/contact-us
On 29 May 2015, at 21:07, Robert Raszuk wrote:

> Hi Thomas,
>
> All  elements of the NLRI define it not only two selected and option 
> ones
> like src or dst. In fact NLRI may not contain those at all to still be 
> a
> valid one.
>
> Quote:
>
> The Flow specification NLRI-type consists of several optional
> subcomponents. A specific packet is considered to match the flow
> specification when it matches the intersection (AND) of all the
> components present in the specification.
>
>
> Cheers,
>
> R.
>
>
>
>
> On Fri, May 29, 2015 at 10:01 PM, Thomas Mangin <
> thomas.mangin@exa-networks.co.uk> wrote:
>
>> Hello,
>>
>> When comparing Flow NLRI (not for firewall ordering but to determine 
>> if a
>> rule need to be sent or not), should all the components of the NLRI 
>> be
>> compared or only the source/destination pair. i.e.: should a speaker 
>> send
>> multiple rules for the same src/dst pair (or single destination or 
>> source).
>>
>> Thank you very much,
>>
>> Thomas
>>
>> http://exa.net.uk/about/contact-us
>> _______________________________________________
>> Idr mailing list
>> Idr@ietf.org
>> https://www.ietf.org/mailman/listinfo/idr
>>
>>


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> I have been told that some implementations behaved differently
> (i.e.: would consider two Flows with similar SRC/DEST but different
> other components such as protocol as similar

If those implementation would suppress such NLRIs actually important
filtering can be suppressed from being propagated resulting in lack of
functionality.

Moreover what such implementation do where NLRI does not contain SRC/DST
subtypes ?

The RFC also very clearly states the propagation rules in section 4:

However, for the purposes of BGP route  propagation, this prefix

should still be transmitted *since BGP route** distribution is
independent on NLRI semantics.*


Thx,
Robert.


On Fri, May 29, 2015 at 10:22 PM, Thomas Mangin <
thomas.mangin@exa-networks.co.uk> wrote:

> Hello Robert,
>
> Thank you for this answer. This was also my understanding but this text
> applies to how the NLRI should be interpreted when matching traffic, not
> how it should be interpreted when sent as a BGP UPDATE.
> I have been told that some implementations behaved differently (i.e.:
> would consider two Flows with similar SRC/DEST but different other
> components such as protocol as similar) and as I can not verify, I though=
t
> prudent to seek clarification as ExaBGP=E2=80=99s implementation is not b=
ehaving
> correctly and I need fixing ( I expected it to behave this way tho ).
>
> Sincerely,
>
> Thomas
>
> http://exa.net.uk/about/contact-us
>
> On 29 May 2015, at 21:07, Robert Raszuk wrote:
>
>  Hi Thomas,
>>
>> All  elements of the NLRI define it not only two selected and option one=
s
>> like src or dst. In fact NLRI may not contain those at all to still be a
>> valid one.
>>
>> Quote:
>>
>> The Flow specification NLRI-type consists of several optional
>> subcomponents. A specific packet is considered to match the flow
>> specification when it matches the intersection (AND) of all the
>> components present in the specification.
>>
>>
>> Cheers,
>>
>> R.
>>
>>
>>
>>
>> On Fri, May 29, 2015 at 10:01 PM, Thomas Mangin <
>> thomas.mangin@exa-networks.co.uk> wrote:
>>
>>  Hello,
>>>
>>> When comparing Flow NLRI (not for firewall ordering but to determine if=
 a
>>> rule need to be sent or not), should all the components of the NLRI be
>>> compared or only the source/destination pair. i.e.: should a speaker se=
nd
>>> multiple rules for the same src/dst pair (or single destination or
>>> source).
>>>
>>> Thank you very much,
>>>
>>> Thomas
>>>
>>> http://exa.net.uk/about/contact-us
>>> _______________________________________________
>>> Idr mailing list
>>> Idr@ietf.org
>>> https://www.ietf.org/mailman/listinfo/idr
>>>
>>>
>>>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,he=
lvetica,sans-serif;font-size:small"><span style=3D"font-family:arial,sans-s=
erif;font-size:12.8000001907349px"><br></span></div><div class=3D"gmail_def=
ault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><spa=
n style=3D"font-family:arial,sans-serif;font-size:12.8000001907349px">&gt; =
I have been told that some implementations behaved differently=C2=A0</span>=
</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,san=
s-serif;font-size:small"><span style=3D"font-family:arial,sans-serif;font-s=
ize:12.8000001907349px">&gt; (i.e.: would consider two Flows with similar S=
RC/DEST but different=C2=A0</span></div><div class=3D"gmail_default" style=
=3D"font-family:arial,helvetica,sans-serif;font-size:small"><span style=3D"=
font-family:arial,sans-serif;font-size:12.8000001907349px">&gt; other compo=
nents such as protocol as similar</span><br></div><div class=3D"gmail_defau=
lt" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><span =
style=3D"font-family:arial,sans-serif;font-size:12.8000001907349px"><br></s=
pan></div><div class=3D"gmail_default"><span style=3D"font-size:12.80000019=
07349px">If those implementation would suppress such NLRIs actually importa=
nt filtering can be=C2=A0suppressed=C2=A0from being propagated resulting in=
 lack of functionality.=C2=A0</span></div><div class=3D"gmail_default"><spa=
n style=3D"font-size:12.8000001907349px"><br></span></div><div class=3D"gma=
il_default"><span style=3D"font-size:12.8000001907349px">Moreover what such=
 implementation do where NLRI does not contain SRC/DST subtypes ?=C2=A0</sp=
an></div><div class=3D"gmail_default"><span style=3D"font-size:12.800000190=
7349px"><br></span></div><div class=3D"gmail_default"><span style=3D"font-s=
ize:12.8000001907349px">The RFC also very clearly states the propagation ru=
les in section 4:</span></div><div class=3D"gmail_default"><span style=3D"f=
ont-size:12.8000001907349px"><br></span></div><div class=3D"gmail_default">=
<pre class=3D"" style=3D"font-size:13.3333330154419px;margin-top:0px;margin=
-bottom:0px;color:rgb(0,0,0)">However, for the purposes of BGP route<span s=
tyle=3D"font-size:13.3333330154419px;font-family:arial,sans-serif">  propag=
ation, this prefix=C2=A0</span></pre><pre class=3D"" style=3D"font-size:13.=
3333330154419px;margin-top:0px;margin-bottom:0px;color:rgb(0,0,0)"><span st=
yle=3D"font-size:13.3333330154419px;font-family:arial,sans-serif">should st=
ill be transmitted <b>since BGP route</b></span><span style=3D"font-size:13=
.3333330154419px;font-family:arial,sans-serif"><b> distribution is independ=
ent on NLRI semantics.</b></span></pre></div><div class=3D"gmail_default" s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><span style=
=3D"font-family:arial,sans-serif;font-size:12.8000001907349px"><br></span><=
/div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans=
-serif;font-size:small"><span style=3D"font-family:arial,sans-serif;font-si=
ze:12.8000001907349px">Thx,<br>Robert.</span></div><div class=3D"gmail_defa=
ult" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><span=
 style=3D"font-family:arial,sans-serif;font-size:12.8000001907349px"><br></=
span></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">=
On Fri, May 29, 2015 at 10:22 PM, Thomas Mangin <span dir=3D"ltr">&lt;<a hr=
ef=3D"mailto:thomas.mangin@exa-networks.co.uk" target=3D"_blank">thomas.man=
gin@exa-networks.co.uk</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_=
quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1=
ex">Hello Robert,<br>
<br>
Thank you for this answer. This was also my understanding but this text app=
lies to how the NLRI should be interpreted when matching traffic, not how i=
t should be interpreted when sent as a BGP UPDATE.<br>
I have been told that some implementations behaved differently (i.e.: would=
 consider two Flows with similar SRC/DEST but different other components su=
ch as protocol as similar) and as I can not verify, I thought prudent to se=
ek clarification as ExaBGP=E2=80=99s implementation is not behaving correct=
ly and I need fixing ( I expected it to behave this way tho ).<br>
<br>
Sincerely,<br>
<br>
Thomas<br>
<br>
<a href=3D"http://exa.net.uk/about/contact-us" target=3D"_blank">http://exa=
.net.uk/about/contact-us</a><div class=3D"HOEnZb"><div class=3D"h5"><br>
On 29 May 2015, at 21:07, Robert Raszuk wrote:<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Hi Thomas,<br>
<br>
All=C2=A0 elements of the NLRI define it not only two selected and option o=
nes<br>
like src or dst. In fact NLRI may not contain those at all to still be a<br=
>
valid one.<br>
<br>
Quote:<br>
<br>
The Flow specification NLRI-type consists of several optional<br>
subcomponents. A specific packet is considered to match the flow<br>
specification when it matches the intersection (AND) of all the<br>
components present in the specification.<br>
<br>
<br>
Cheers,<br>
<br>
R.<br>
<br>
<br>
<br>
<br>
On Fri, May 29, 2015 at 10:01 PM, Thomas Mangin &lt;<br>
<a href=3D"mailto:thomas.mangin@exa-networks.co.uk" target=3D"_blank">thoma=
s.mangin@exa-networks.co.uk</a>&gt; wrote:<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Hello,<br>
<br>
When comparing Flow NLRI (not for firewall ordering but to determine if a<b=
r>
rule need to be sent or not), should all the components of the NLRI be<br>
compared or only the source/destination pair. i.e.: should a speaker send<b=
r>
multiple rules for the same src/dst pair (or single destination or source).=
<br>
<br>
Thank you very much,<br>
<br>
Thomas<br>
<br>
<a href=3D"http://exa.net.uk/about/contact-us" target=3D"_blank">http://exa=
.net.uk/about/contact-us</a><br>
_______________________________________________<br>
Idr mailing list<br>
<a href=3D"mailto:Idr@ietf.org" target=3D"_blank">Idr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/idr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/idr</a><br>
<br>
<br>
</blockquote></blockquote>
</div></div></blockquote></div><br></div>

--047d7bfcfd500502fc05173eb2b2--


From nobody Fri May 29 14:13:30 2015
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Cc: idr mailing list <idr@ietf.org>, idr chair <idr-chairs@tools.ietf.org>, RFC Editor <rfc-editor@rfc-editor.org>
Subject: [Idr] Protocol Action: 'Revised Error Handling for BGP UPDATE Messages' to Proposed Standard (draft-ietf-idr-error-handling-19.txt)
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The IESG has approved the following document:
- 'Revised Error Handling for BGP UPDATE Messages'
  (draft-ietf-idr-error-handling-19.txt) as Proposed Standard

This document is the product of the Inter-Domain Routing Working Group.

The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah
Brungard.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-error-handling/





Technical Summary

The document describes revisions to the error handling behavior that
is defined in the base BGP-4 specification (RFC4271). The motivation
for changes to this behaviour is to avoid a single erroneous UPDATE
message (or attribute within such a message) impacting an entire BGP-4
session (and hence all the NLRI that it carries). The document
introduces the "treat-as-withdraw" mechanism, which treats the NLRI
received within an erroneous UPDATE message as though they are
withdrawn by the remote neighbor. Additionally an "attribute discard"
approach is introduced. The document evaluates the existing BGP-4
attributes and defines new error handling behaviours for them. Errors
for which the existing BGP-4 error handling behaviour is to be
retained are also considered.

There is working group consensus amongst both network operators, and
BGP-4 implementors that this mechanism is a useful Standards Track
document to improve the robustness of the BGP-4 protocol, whilst also
considering the correctness of routing information it carries.


Working Group Summary

There has been significant debate relating to the balance of different
functionalities required between working group participants which seek
to maintain established sessions (or retain NLRI during their
failure), and those that consider the correctness of the protocol
paramount. The document's intention was originally to address a point
failure scenario observed within the Internet related to optional
transitive attributes, but based on wider operational experience, the
working group has extended the scope of the document.

Document Quality

The behaviours now included within the document have been subject to
significant review over multiple cycles from both protocol experts,
network operators, and protocol implementors contributing to the
balance between approaches having been reached.

Operational requirements for the changes within the document have been
discussed at length - and reviewed with GROW. Whilst there is some
appetite for additional mechanisms for operators to maintain the
integrity of their networks by compromising correctness of the routing
information in their network - especially during catastrophic failures
- this document does not reflect these additional requirements - which
are subject to separate proposals to the working group.

Significant deployment experience has been gained for the changes
described in the document. The shepherd is aware of four shipping
commercial implementations of BGP-4 (Alcatel-Lucent SR OS, Cisco IOS,
Cisco IOS XR, Juniper JUNOS), and one open source implementation
(Quagga) have implemented the behaviours described in the
document. The feedback from these implementations has helped to
iterate the contents of the document, and reach consensus within the
working group.

Status of administrative actions: 
Public IPR Call: 11/12 to 11/19/14 
Routing Directorate Review status: Joel Halpern (11/18), QA review completed (9/4)
OPS Directorate status: Reviewer: Warren Kumari (11/16) done  
Gen-Art Pre-review: Pending,  10/14 
IANA: No early review

Personnel

The document shepherd is Rob Shakir. 
The WG Chair responsible: Sue Hares   [John Scudder is co-author] 
The responsible Area Director is Alvaro Retana.



From nobody Fri May 29 22:56:08 2015
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From: Haoweiguo <haoweiguo@huawei.com>
To: "idr@ietf.org" <idr@ietf.org>
Thread-Topic: New Version Notification for draft-liang-idr-flowspec-orf-00.txt
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Hi All,
A new draft of "BGP FlowSpec Outbound Route Filter" was proposed.=20
Your comments and suggestions are appreciated.

Thanks,
weiguo
________________________________________
From: internet-drafts@ietf.org [internet-drafts@ietf.org]
Sent: Saturday, May 30, 2015 13:53
To: Qiandeng Liang; Youjianjie; Qiandeng Liang; Haoweiguo; Youjianjie; Haow=
eiguo
Subject: New Version Notification for draft-liang-idr-flowspec-orf-00.txt

A new version of I-D, draft-liang-idr-flowspec-orf-00.txt
has been successfully submitted by Weiguo Hao and posted to the
IETF repository.

Name:           draft-liang-idr-flowspec-orf
Revision:       00
Title:          BGP FlowSpec Outbound Route Filter
Document date:  2015-05-30
Group:          Individual Submission
Pages:          10
URL:            https://www.ietf.org/internet-drafts/draft-liang-idr-flowsp=
ec-orf-00.txt
Status:         https://datatracker.ietf.org/doc/draft-liang-idr-flowspec-o=
rf/
Htmlized:       https://tools.ietf.org/html/draft-liang-idr-flowspec-orf-00


Abstract:
   This document defines a new ORF-type, called the "FlowSpec-ORF".
   FlowSpec-ORF is applicable in the networks supporting flow
   specifications (FlowSpec) [RFC5575].  It can be used to filter the
   FlowSpec rules on demand.





Please note that it may take a couple of minutes from the time of submissio=
n
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat=


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From: Mach Chen <mach.chen@huawei.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/22 to 6/5)
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I read the draft and it's useful, so support the adoption.

BTW, also agree with Acee's comment.

Best regards,
Mach

From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of Susan Hares
Sent: Friday, May 22, 2015 7:26 PM
To: idr@ietf.org
Subject: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 =
(5/22 to 6/5)

This begins a 2 week Working Group adoption for draft-wang-idr-eag-distribu=
tion.   You can find the draft at:

http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/

This draft proposes a new BGP-LS


   As MPLS-TE network grows, administrative Groups advertised as a

   fixed-length 32-bit Bitmask is quite constraining.  "Extended

   Administrative Group" IGP TE extensions sub-TLV defined in [RFC7308<http=
s://tools.ietf.org/html/rfc7308>]

   is introduced to provide for additional administrative groups (link

   colors) beyond the current limit of 32.



   The EAG TLV is used in addition to the Administrative Groups when a

   node wants to advertise more than 32 colors for a link.  The EAG TLV

   is optional.  The format and semantics of the 'value' fields in EAG

   TLVs correspond to the format and semantics of value fields in IGP

   extension sub-TLVs, defined in [RFC7308<https://tools.ietf.org/html/rfc7=
308>].



   +------------+---------------------+--------------+-----------------+

   |  TLV Code  |     Description     |     IS-IS    |   Defined in:   |

   |    Point   |                     |  TLV/Sub-TLV |                 |

   +------------+---------------------+--------------+-----------------+

   |    xxxx    |       Extended      |     22/xx    |    [RFC7308<https://=
tools.ietf.org/html/rfc7308>]    |

   |            |      Admin Group    |              |                 |

   +------------+---------------------+--------------+-----------------+

Please in your comments include "support" or "no support" for this draft.

Sue Hares and John Scudder.

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<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">I read the draft and it&#8217;s useful, so support the adoption.<=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">BTW, also agree with Acee&#8217;s comment.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Best regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D">Mach<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> Idr [mailto:idr-bounces@ietf.org]
<b>On Behalf Of </b>Susan Hares<br>
<b>Sent:</b> Friday, May 22, 2015 7:26 PM<br>
<b>To:</b> idr@ietf.org<br>
<b>Subject:</b> [Idr] 2 week adoption call for draft-wang-idr-eag-distribut=
ion-02 (5/22 to 6/5)<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This begins a 2 week Working Gr=
oup adoption for draft-wang-idr-eag-distribution.&nbsp;&nbsp; You can find =
the draft at:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><a href=3D"http://datatracker.i=
etf.org/doc/draft-wang-idr-eag-distribution/">http://datatracker.ietf.org/d=
oc/draft-wang-idr-eag-distribution/</a><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This draft proposes a new BGP-L=
S <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; As MPLS-TE network grows, administrative Groups advert=
ised as a<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; fixed-length 32-bit Bitmask is quite constraining.&nbs=
p; &quot;Extended<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; Administrative Group&quot; IGP TE extensions sub-TLV d=
efined in [<a href=3D"https://tools.ietf.org/html/rfc7308" title=3D"&quot;E=
xtended Administrative Groups in MPLS-TE&quot;">RFC7308</a>]<o:p></o:p></sp=
an></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; is introduced to provide for additional administrative=
 groups (link<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; colors) beyond the current limit of 32.<o:p></o:p></sp=
an></pre>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; The EAG TLV is used in addition to the Administrative =
Groups when a<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; node wants to advertise more than 32 colors for a link=
.&nbsp; The EAG TLV<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; is optional.&nbsp; The format and semantics of the 'va=
lue' fields in EAG<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; TLVs correspond to the format and semantics of value f=
ields in IGP<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; extension sub-TLVs, defined in [<a href=3D"https://too=
ls.ietf.org/html/rfc7308" title=3D"&quot;Extended Administrative Groups in =
MPLS-TE&quot;">RFC7308</a>].<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black"><o:p>&nbsp;</o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; &#43;------------&#43;---------------------&#43;------=
--------&#43;-----------------&#43;<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; |&nbsp; TLV Code&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; Descr=
iption&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; IS-IS&nbsp;&nbsp;&=
nbsp; |&nbsp;&nbsp; Defined in:&nbsp;&nbsp; |<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; Point&nbsp;&nbsp; |&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp; TLV/Sub-TLV |&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |=
<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; &#43;------------&#43;---------------------&#43;------=
--------&#43;-----------------&#43;<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; xxxx&nbsp;&nbsp;&nbsp; |&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp; Extended&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&n=
bsp;&nbsp;&nbsp; 22/xx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; [<a href=3D"ht=
tps://tools.ietf.org/html/rfc7308" title=3D"&quot;Extended Administrative G=
roups in MPLS-TE&quot;">RFC7308</a>]&nbsp;&nbsp;&nbsp; |<o:p></o:p></span><=
/pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbs=
p;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Admin Group&nbsp;&nbsp;&nbsp;=
 |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></pre>
<pre style=3D"page-break-before:always"><span lang=3D"EN-US" style=3D"color=
:black">&nbsp;&nbsp; &#43;------------&#43;---------------------&#43;------=
--------&#43;-----------------&#43;<o:p></o:p></span></pre>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Please in your comments include=
 &#8220;support&#8221; or &#8220;no support&#8221; for this draft.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Sue Hares and John Scudder. <o:=
p></o:p></span></p>
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From: Haoweiguo <haoweiguo@huawei.com>
To: Qin Wu <bill.wu@huawei.com>, "Acee Lindem (acee)" <acee@cisco.com>, "Jeff Tantsura" <jeff.tantsura@ericsson.com>, Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
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">
<div style=3D"direction: ltr;font-family: Tahoma;color: #000000;font-size: =
10pt;">
<p><font size=3D"3" face=3D"Calibri">Support this adoption.</font></p>
<p><font size=3D"3" face=3D"Calibri">I think BGP LS extension is necessary =
to carry &quot;Extended Administrative Group&quot; IGP TE information.</fon=
t></p>
<p><font size=3D"3" face=3D"Calibri"></font>&nbsp;</p>
<p><font size=3D"3" face=3D"Calibri">Thanks,</font></p>
<p><font size=3D"3" face=3D"Calibri">weiguo</font></p>
<div style=3D"FONT-FAMILY: Times New Roman; COLOR: #000000; FONT-SIZE: 16px=
">
<hr tabindex=3D"-1">
<div style=3D"DIRECTION: ltr" id=3D"divRpF364580"><font color=3D"#000000" s=
ize=3D"2" face=3D"Tahoma"><b>From:</b> Idr [idr-bounces@ietf.org] on behalf=
 of Qin Wu [bill.wu@huawei.com]<br>
<b>Sent:</b> Monday, May 25, 2015 11:36<br>
<b>To:</b> Acee Lindem (acee); Jeff Tantsura; Susan Hares; idr@ietf.org<br>
<b>Subject:</b> Re: [Idr] 2 week adoption call for draft-wang-idr-eag-distr=
ibution-02 (5/22 to 6/5)<br>
</font><br>
</div>
<div></div>
<div>
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"COLOR: #1f497d; FONT-SIZE: 10.5pt" la=
ng=3D"EN-US">Agree with Acee and support this draft.</span></p>
<p class=3D"MsoNormal"><span style=3D"COLOR: #1f497d; FONT-SIZE: 10.5pt" la=
ng=3D"EN-US"></span>&nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"COLOR: #1f497d; FONT-SIZE: 10.5pt" la=
ng=3D"EN-US">-Qin</span></p>
<div>
<div style=3D"BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING=
-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1p=
t solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<p class=3D"MsoNormal"><b><span style=3D"FONT-FAMILY: =CB=CE=CC=E5; FONT-SI=
ZE: 10pt">=B7=A2=BC=FE=C8=CB<span lang=3D"EN-US">:</span></span></b><span s=
tyle=3D"FONT-FAMILY: =CB=CE=CC=E5; FONT-SIZE: 10pt" lang=3D"EN-US"> Idr [ma=
ilto:idr-bounces@ietf.org]
</span><b><span style=3D"FONT-FAMILY: =CB=CE=CC=E5; FONT-SIZE: 10pt">=B4=FA=
=B1=ED </span></b><span style=3D"FONT-FAMILY: =CB=CE=CC=E5; FONT-SIZE: 10pt=
" lang=3D"EN-US">Acee Lindem (acee)<br>
</span><b><span style=3D"FONT-FAMILY: =CB=CE=CC=E5; FONT-SIZE: 10pt">=B7=A2=
=CB=CD=CA=B1=BC=E4<span lang=3D"EN-US">:</span></span></b><span style=3D"FO=
NT-FAMILY: =CB=CE=CC=E5; FONT-SIZE: 10pt" lang=3D"EN-US"> 2015</span><span =
style=3D"FONT-FAMILY: =CB=CE=CC=E5; FONT-SIZE: 10pt">=C4=EA<span lang=3D"EN=
-US">5</span>=D4=C2<span lang=3D"EN-US">22</span>=C8=D5<span lang=3D"EN-US"=
>
 23:54<br>
</span><b>=CA=D5=BC=FE=C8=CB<span lang=3D"EN-US">:</span></b><span lang=3D"=
EN-US"> Jeff Tantsura; Susan Hares; idr@ietf.org<br>
</span><b>=D6=F7=CC=E2<span lang=3D"EN-US">:</span></b><span lang=3D"EN-US"=
> Re: [Idr] 2 week adoption call for draft-wang-idr-eag-distribution-02 (5/=
22 to 6/5)</span></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"></span>&nbsp;</p>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">I support with one comment.</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">In the future, I=A1=AFm wondering if we could standardize the BG=
P Link State encoding in the corresponding IGP documents? It seems like it =
would be possible since it is simply the TLV
 mapping and the &nbsp;IANA code point(s).&nbsp;</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">Thanks,</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">Acee</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<div style=3D"BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING=
-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1p=
t solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<p class=3D"MsoNormal"><b><span style=3D"COLOR: black" lang=3D"EN-US">From:=
 </span></b><span style=3D"COLOR: black" lang=3D"EN-US">Jeff Tantsura &lt;<=
a href=3D"mailto:jeff.tantsura@ericsson.com" target=3D"_blank">jeff.tantsur=
a@ericsson.com</a>&gt;<br>
<b>Date: </b>Friday, May 22, 2015 at 11:45 AM<br>
<b>To: </b>Susan Hares &lt;<a href=3D"mailto:shares@ndzh.com" target=3D"_bl=
ank">shares@ndzh.com</a>&gt;, &quot;<a href=3D"mailto:idr@ietf.org" target=
=3D"_blank">idr@ietf.org</a>&quot; &lt;<a href=3D"mailto:idr@ietf.org" targ=
et=3D"_blank">idr@ietf.org</a>&gt;<br>
<b>Subject: </b>Re: [Idr] 2 week adoption call for draft-wang-idr-eag-distr=
ibution-02 (5/22 to 6/5)</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<blockquote style=3D"BORDER-BOTTOM: medium none; BORDER-LEFT: #b5c4df 4.5pt=
 solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 4pt; PADDING-RIGHT: 0cm; MARGIN-=
LEFT: 3.75pt; BORDER-TOP: medium none; MARGIN-RIGHT: 0cm; BORDER-RIGHT: med=
ium none; PADDING-TOP: 0cm" id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE">
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">Support as co-author</span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">Cheers,</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US">Jeff</span></p>
</div>
</div>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<div style=3D"BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING=
-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1p=
t solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<p class=3D"MsoNormal"><b><span style=3D"COLOR: black" lang=3D"EN-US">From:=
 </span></b><span style=3D"COLOR: black" lang=3D"EN-US">Susan Hares &lt;<a =
href=3D"mailto:shares@ndzh.com" target=3D"_blank">shares@ndzh.com</a>&gt;<b=
r>
<b>Date: </b>Friday, May 22, 2015 at 4:26 AM<br>
<b>To: </b>&quot;<a href=3D"mailto:idr@ietf.org" target=3D"_blank">idr@ietf=
.org</a>&quot; &lt;<a href=3D"mailto:idr@ietf.org" target=3D"_blank">idr@ie=
tf.org</a>&gt;<br>
<b>Subject: </b>[Idr] 2 week adoption call for draft-wang-idr-eag-distribut=
ion-02 (5/22 to 6/5)</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black; FONT-SIZE: 10.5pt" lang=
=3D"EN-US"></span>&nbsp;</p>
</div>
<blockquote style=3D"BORDER-BOTTOM: medium none; BORDER-LEFT: #b5c4df 4.5pt=
 solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 4pt; PADDING-RIGHT: 0cm; MARGIN-=
LEFT: 3.75pt; BORDER-TOP: medium none; MARGIN-RIGHT: 0cm; BORDER-RIGHT: med=
ium none; PADDING-TOP: 0cm" id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US">This beg=
ins a 2 week Working Group adoption for draft-wang-idr-eag-distribution.&nb=
sp;&nbsp; You can find the draft at:
</span></p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"><a href=
=3D"http://datatracker.ietf.org/doc/draft-wang-idr-eag-distribution/" targe=
t=3D"_blank">http://datatracker.ietf.org/doc/draft-wang-idr-eag-distributio=
n/</a></span></p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US">This dra=
ft proposes a new BGP-LS
</span></p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; As MPLS-TE network grows, administrative Groups adv=
ertised as a</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; fixed-length 32-bit Bitmask is quite constraining.&=
nbsp; &quot;Extended</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; Administrative Group&quot; IGP TE extensions sub-TL=
V defined in [<a title=3D"&quot;Extended Administrative Groups in MPLS-TE&q=
uot;" href=3D"https://tools.ietf.org/html/rfc7308" target=3D"_blank">RFC730=
8</a>]</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; is introduced to provide for additional administrat=
ive groups (link</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; colors) beyond the current limit of 32.</span></pre=
>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; The EAG TLV is used in addition to the Administrati=
ve Groups when a</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; node wants to advertise more than 32 colors for a l=
ink.&nbsp; The EAG TLV</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; is optional.&nbsp; The format and semantics of the =
'value' fields in EAG</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; TLVs correspond to the format and semantics of valu=
e fields in IGP</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; extension sub-TLVs, defined in [<a title=3D"&quot;E=
xtended Administrative Groups in MPLS-TE&quot;" href=3D"https://tools.ietf.=
org/html/rfc7308" target=3D"_blank">RFC7308</a>].</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; &#43;------------&#43;---------------------&#43;---=
-----------&#43;-----------------&#43;</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; |&nbsp; TLV Code&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; De=
scription&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; IS-IS&nbsp;&nbs=
p;&nbsp; |&nbsp;&nbsp; Defined in:&nbsp;&nbsp; |</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; Point&nbsp;&nbsp; |&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp; TLV/Sub-TLV |&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
; |</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; &#43;------------&#43;---------------------&#43;---=
-----------&#43;-----------------&#43;</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; xxxx&nbsp;&nbsp;&nbsp; |&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Extended&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp=
;&nbsp;&nbsp;&nbsp; 22/xx&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; [<a title=
=3D"&quot;Extended Administrative Groups in MPLS-TE&quot;" href=3D"https://=
tools.ietf.org/html/rfc7308" target=3D"_blank">RFC7308</a>]&nbsp;&nbsp;&nbs=
p; |</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &=
nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Admin Group&nbsp;&nbsp;&nb=
sp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |</span></pre>
<pre style=3D"PAGE-BREAK-BEFORE: always"><span style=3D"COLOR: black" lang=
=3D"EN-US">&nbsp;&nbsp; &#43;------------&#43;---------------------&#43;---=
-----------&#43;-----------------&#43;</span></pre>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US">Please i=
n your comments include =A1=B0support=A1=B1 or =A1=B0no support=A1=B1 for t=
his draft.
</span></p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US"></span>&=
nbsp;</p>
<p class=3D"MsoNormal"><span style=3D"COLOR: black" lang=3D"EN-US">Sue Hare=
s and John Scudder.
</span></p>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</body>
</html>

--_000_DD5FC8DE455C3348B94340C0AB5517334F86E90Cnkgeml501mbschi_--


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Hello Weiguo,

Hi All,
> A new draft of "BGP FlowSpec Outbound Route Filter" was proposed.
> Your comments and suggestions are appreciated.
>
> Thanks,
> weiguo
>


=E2=80=8BLet me provide few comments =E2=80=8Bwhy I think this work should =
be rather
abandoned right at its  -00 version:


section 3.1 Figure 1

   "Therefore, ASBR2 can send to ASBR1 a set of FlowSpec-ORF
   that can be used by ASBR1 to filter its outbound FlowSpec rules to
   ASBR2."

- The above would result in dropping part of the flow descriptions between
ASBR 1 and ASBR 2 such that neither ASBR 3 nor ASBR 4 would be able to ever
receive it. Note that ASBR 2 may act only as transit and may not be willing
to enable foregin filtering in their data plane at all. However it should
have not limit it to carry BGP control plane SAFI 133 or 134 to the
legitimate peers. So pushing Flow Spec ORF from ASBR 2 to ASBR 1 would be
counterproductive.


section 3.1 Figure 2

   "Furthermore, ASBR2 and ASBR3 will distribute the FlowSpec rules to
   ASBR1 and ASBR4 respectively."


- Sending FlowSpec information to ASBR1 would be acting against validation
procedures as described in section 6 of RFC5575 which say:

"A flow specification NLRI must be validated such that it is
   considered feasible if and only if:

   a) The originator of the flow specification matches the originator of
      the best-match unicast route for the destination prefix embedded
      in the flow specification."


Summary:

I think we should not suppress propagation of filtering rules in BGP
control plane provided they are legitimate (ie. pass validation procedure)
just based on cherry picking on the match or actions criteria they contain.

Practically amount and  churn of the amount of flow spec information would
be rather in white noise levels compared to what BGP should be ready to
carry.

However if one would like to limit those other already available tools
could be used: longer MRAI timer, dedicated BGP session for SAFI 133/134
with different input processing, FS NLRI dampening etc ...


=E2=80=8BRegards,
r.=E2=80=8B

--047d7bfcfa0abfc209051749292a
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,he=
lvetica,sans-serif;font-size:small">Hello Weiguo,</div><div class=3D"gmail_=
default" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><=
br></div><div class=3D"gmail_extra"><div class=3D"gmail_quote"><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1=
px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:=
1ex">Hi All,<br>
A new draft of &quot;BGP FlowSpec Outbound Route Filter&quot; was proposed.=
<br>
Your comments and suggestions are appreciated.<br>
<br>
Thanks,<br>
weiguo<br></blockquote><div><br></div><div><br></div><div class=3D"gmail_de=
fault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small">=E2=
=80=8BLet me provide few comments =E2=80=8Bwhy I think this work should be =
rather abandoned right at its =C2=A0-00 version:</div><div class=3D"gmail_d=
efault" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><b=
r></div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,s=
ans-serif;font-size:small"><br></div><div class=3D"gmail_default" style=3D"=
font-family:arial,helvetica,sans-serif;font-size:small">section 3.1 Figure =
1</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sa=
ns-serif;font-size:small"><br></div><div class=3D"gmail_default" style=3D"f=
ont-family:arial,helvetica,sans-serif;font-size:small"><div class=3D"gmail_=
default">=C2=A0 =C2=A0&quot;Therefore, ASBR2 can send to ASBR1 a set of Flo=
wSpec-ORF</div><div class=3D"gmail_default">=C2=A0 =C2=A0that can be used b=
y ASBR1 to filter its outbound FlowSpec rules to</div><div class=3D"gmail_d=
efault">=C2=A0 =C2=A0ASBR2.&quot;</div></div><div class=3D"gmail_default" s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><=
div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small">- The above would result in dropping part of the flow des=
criptions between ASBR 1 and ASBR 2 such that neither ASBR 3 nor ASBR 4 wou=
ld be able to ever receive it. Note that ASBR 2 may act only as transit and=
 may not be willing to enable foregin filtering in their data plane at all.=
 However it should have not limit it to carry BGP control plane SAFI 133 or=
 134 to the legitimate peers. So pushing Flow Spec ORF from ASBR 2 to ASBR =
1 would be counterproductive.=C2=A0<br></div><div class=3D"gmail_default" s=
tyle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><=
div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-fami=
ly:arial,helvetica,sans-serif;font-size:small">section 3.1 Figure 2<br></di=
v><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-se=
rif;font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-f=
amily:arial,helvetica,sans-serif;font-size:small"><div class=3D"gmail_defau=
lt">=C2=A0 =C2=A0&quot;Furthermore, ASBR2 and ASBR3 will distribute the Flo=
wSpec rules to</div><div class=3D"gmail_default">=C2=A0 =C2=A0ASBR1 and ASB=
R4 respectively.&quot;</div></div><div class=3D"gmail_default" style=3D"fon=
t-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class=
=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;font-siz=
e:small"><br></div><div class=3D"gmail_default" style=3D"font-family:arial,=
helvetica,sans-serif;font-size:small">- Sending FlowSpec information to ASB=
R1 would be acting against validation procedures as described in section 6 =
of RFC5575 which say:=C2=A0</div><div class=3D"gmail_default" style=3D"font=
-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class=3D=
"gmail_default" style><span style=3D"font-family:arial,helvetica,sans-serif=
;font-size:small">&quot;</span><font face=3D"arial, helvetica, sans-serif">=
A flow specification NLRI must be validated such that it is</font></div><di=
v class=3D"gmail_default" style><font face=3D"arial, helvetica, sans-serif"=
>=C2=A0 =C2=A0considered feasible if and only if:</font></div><div class=3D=
"gmail_default" style><font face=3D"arial, helvetica, sans-serif"><br></fon=
t></div><div class=3D"gmail_default" style><font face=3D"arial, helvetica, =
sans-serif">=C2=A0 =C2=A0a) The originator of the flow specification matche=
s the originator of</font></div><div class=3D"gmail_default" style><font fa=
ce=3D"arial, helvetica, sans-serif">=C2=A0 =C2=A0 =C2=A0 the best-match uni=
cast route for the destination prefix embedded</font></div><div class=3D"gm=
ail_default" style><font face=3D"arial, helvetica, sans-serif">=C2=A0 =C2=
=A0 =C2=A0 in the flow specification.&quot;</font></div><div class=3D"gmail=
_default" style><font face=3D"arial, helvetica, sans-serif"><br></font></di=
v><div class=3D"gmail_default" style><font face=3D"arial, helvetica, sans-s=
erif"><br></font></div><div class=3D"gmail_default" style>Summary:</div><di=
v class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;f=
ont-size:small"><br></div><div class=3D"gmail_default" style=3D"font-family=
:arial,helvetica,sans-serif;font-size:small">I think we should not suppress=
 propagation of filtering rules in BGP control plane provided they are legi=
timate (ie. pass validation procedure) just based on cherry picking on the =
match or actions criteria they contain.=C2=A0</div><div class=3D"gmail_defa=
ult" style=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br><=
/div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans=
-serif;font-size:small">Practically amount and =C2=A0churn of the amount of=
 flow spec information would be rather in white noise levels compared to wh=
at BGP should be ready to carry.=C2=A0</div><div class=3D"gmail_default" st=
yle=3D"font-family:arial,helvetica,sans-serif;font-size:small"><br></div><d=
iv class=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;=
font-size:small">However if one would like to limit those other already ava=
ilable tools could be used: longer MRAI timer, dedicated BGP session for SA=
FI 133/134 with different input processing, FS NLRI dampening etc ...=C2=A0=
</div><div class=3D"gmail_default" style=3D"font-family:arial,helvetica,san=
s-serif;font-size:small"><br></div><div class=3D"gmail_default" style=3D"fo=
nt-family:arial,helvetica,sans-serif;font-size:small"><br></div><div><div c=
lass=3D"gmail_default" style=3D"font-family:arial,helvetica,sans-serif;font=
-size:small">=E2=80=8BRegards,</div><div class=3D"gmail_default" style=3D"f=
ont-family:arial,helvetica,sans-serif;font-size:small">r.=E2=80=8B</div></d=
iv><div><br></div></div></div></div>

--047d7bfcfa0abfc209051749292a--


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Subject: [Idr] FW: [RTG-DIR] Routing directorate review of	draft-ietf-idr-add-paths-guidelines
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Fyi - Routing directorate review of add-path-guidelines by Stewart Bryant. 

 

Thank you Stewart for your review!

 

Sue 

 

From: rtg-dir [mailto:rtg-dir-bounces@ietf.org] On Behalf Of Stewart Bryant
Sent: Wednesday, May 20, 2015 12:05 PM
To: Jonathan Hardwick
Cc: draft-ietf-idr-add-paths-guidelines@tools.ietf.org; rtg-dir@ietf.org;
'Alvaro Retana (aretana)'; 'John G. Scudder'; Susan Hares; 'Jon Hudson'
Subject: Re: [RTG-DIR] Routing directorate review of
draft-ietf-idr-add-paths-guidelines

 

Hello,

I have been selected as the Routing Directorate reviewer for this draft. 
The Routing Directorate seeks to review all routing or routing-related 
drafts as they pass through IETF last call and IESG review. The purpose 
of the review is to provide assistance to the Routing ADs. For more 
information about the Routing Directorate, please see 
http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, 
it would be helpful if you could consider them along with any other 
IETF Last Call comments that you receive, and strive to resolve
 them through discussion or by updating the draft.

Document: draft-ietf-idr-add-paths-guidelines-07.txt
Reviewer: Stewart Bryant
Review Date: 20 May 2015
IETF LC End Date: Not yet in IETF LC
Intended Status: Standards Track

Summary:

I have significant concerns about this document and recommend that the 
Routing ADs discuss these issues further with the authors. 

(Actually I see that this document has not yet been passed to the ADs, 
so I suggest that the chairs address these issues with the authors) 


I provide comments inline - Please look for SB>

IDR Working Group                                             J. Uttaro
Internet-Draft                                                     AT&T
Intended status: Standards Track
Expires: Jun 3, 2015                                        P. Francois
                                                         IMDEA Networks

                                                               K. Patel
                                                          Cisco Systems

                                                           P. Mohapatra
                                                       Cumulus Networks

                                                                J. Haas
                                                       Juniper Networks

                                                             A. Simpson
                                                            R. Fragassi
                                                         Alcatel-Lucent


SB> This document has seven authors against a guideline of five.
SB> I assume that the chairs and ADs are happy with this.

                                                            Dec 3, 2014

        Best Practices for Advertisement of Multiple Paths in IBGP
                draft-ietf-idr-add-paths-guidelines-07.txt

SB> I wonder if this document is correct as ST rather than BCP? Certainly
the 
SB> the title and abstract imply a better match with BCP.

SB> There are 9 nits warnings, of which the following should be
SB> addressed:

================

  Checking nits according to http://www.ietf.org/id-info/checklist :
 
----------------------------------------------------------------------------

  == There are 5 instances of lines with non-RFC5735-compliant IPv4
addresses
     in the document.  If these are example addresses, they should be
changed.


  Miscellaneous warnings:
 
----------------------------------------------------------------------------


  == Line 611 has weird spacing: '...ltipath  selec...'


  Checking references for intended status: Proposed Standard
 
----------------------------------------------------------------------------

     (See RFCs 3967 and 4897 for information about using normative
references
     to lower-maturity documents in RFCs)

  == Missing Reference: 'RFC 4271' is mentioned on line 153, but not defined

  == Missing Reference: 'RFC-2119' is mentioned on line 175, but not defined

  == Missing Reference: 'RFC4364' is mentioned on line 808, but not defined

  == Unused Reference: 'RFC2119' is defined on line 912, but no explicit
     reference was found in the text

  == Unused Reference: 'RFC4271' is defined on line 939, but no explicit
     reference was found in the text

  == Outdated reference: A later version (-10) exists of
     draft-ietf-idr-add-paths-07

===============



              ========        =====================
              =  +---+        +---+           +---+
              =  |RTR|________|RTR|           |RTR|
              =  | E |        | A |           | C |
              =  +---+Path A->+---+    AS1    +---+
              =      =        =    \         /    =
              =      =        =     \       /     =
              =      =        =      \     /      =
              =      =        =       \   /       =
              = AS3  =        =       +---+       =
              =      =        =       |RR |       =
              =      =        =       | 1 |       =
              =      =        =       +---+       =
              =      =        =       /   \       =
              =      =        =      /     \      =
              =      =        =     /       \     =
              =      =        =    /         \    =
              =  +---+Path B->+---+           +---+
              =  |RTR|  ______|RTR|           |RTR|
              =  | F |        | B |           | D |
              =  +---+        +---+           +---+
              ========        =====================

                        Figure 1: Example Topology

SB> Surely the advertisments go L to R, but the paths
SB> actually go R to L?


   Under these circumstances consider the steps required to restore
   traffic from router D to destination XYZ when the link between Router
SB> For clarification " destination XYZ reachable via AS3"
   A and Router E fails. (Assume that router A set next-hop to self when
   advertising path A and that router B is not configured for best-
   external).
SB> is "best-external" the formal name for this configuration. If not
SB> I recommend that you use the formal name.

   1. Router A sends a BGP UPDATE message Withdrawing its advertisement
      of path (A).
SB> Presumable "Router A sends a BGP UPDATE message to RR1 withdrawing..."

============

   5. Router D reruns its decisions process, determines path (B) to be
      the best path, and updates its forwarding table. After this step
      traffic from router D to destination XYZ is restored (the traffic
      path has changed from A to B).

SB> Surely " path has changed from path A to path B"

==========

   1. Router A sends a BGP UPDATE message withdrawing its advertisement
      of path (A).

SB> Presumable "Router A sends a BGP UPDATE message to RR1 withdrawing..."


   2. RR1 receives the withdrawal, and propagates it to its other client
      peers, routers B, C and D.

   3. Router D receives the withdrawal, reruns the decision process and
      updates the forwarding entry for destination XYZ.

SB> Wait a minuite here. What about the other other routers in the 
SB> network? Maybe you are considering a BGP-free core, which is fine
SB> but that has to be noted up front as a constraint, but so far
SB> as I can see you do not talk about that. In a BGP free core 
SB> what you say holds, but in a regular IP core you may get loops
SB> until the on path routers have been converged. This really needs some
SB> text.
SB>
SB> You talk about this later in the text, but you really need to
SB> at least summarise your important assumptions earlier in the text.


   3.2. Load Balancing

   Increased path diversity allows routers to install several paths in
   their forwarding tables in order to load balance traffic across those
   paths.

SB> Again the matter of BGP free core needs some discussion.
SB> In the case of non-BGP-free core it's not quite that simple.

   3.3. Churn Reduction

   When Add-Paths is used in an AS, the availability of additional
   backup paths means failures can be recovered locally with much less
   path exploration in iBGP and therefore less updates disseminate in
   eBGP.  When the preferred backup path is the post-convergence path,
   churn is minimized.

SB> The text containing "therefore less updates disseminate" does 
SB> not scan correctly.
SB> BTW When the preferred backup path is the post-convergence path
SB> you don't get loops.

==============

SB> You might consider some RFC2119 language in the following para:
   A BGP UPDATE message from an Add-Paths peer may advertise and
   withdraw more than one NLRI belonging to one or more address
   families. In this case Add-Paths may be supported for some of the
   address families and not others. In this situation the receiving BGP
   router should not expect that all of the path identifiers in the
   UPDATE message will be the same.

===============

   Control Plane Stress: Coping with multiple iBGP paths has two
   implications on the computation that a router has to handle. First,
   it has to compute the paths to send to its peers, i.e. more than the
   best path.  Second, it also has to handle the potential churn related
   to the exchange of those multiple paths.

SB> Is there any SIDR and BGPsec related compute stress that needs 
SB> to be called out?

===============


   5.2. Scalability Considerations

   In terms of scalability, we note that advertising multiple paths per
   prefix requires more memory and state than the current behavior of
   advertising the best path only. A BGP speaker that does not implement
   Add-Paths maintains send state information in its prefix data
   structure per neighbor as a way to determine that the prefix has been
   advertised to the neighbor. With Add-Paths, this information has to
   be replicated on a per path basis that needs to be advertised.
   Mathematically, if "send state" size per prefix is 's' bytes, number
   of neighbors is 'n', and number of paths being advertised is 'p',
   then the current memory requirement for BGP "send state" = n * s
   bytes; with Add-Paths, it becomes n * s * p bytes.

SB> The following are personal preferences which can be ingrored if
SB> you wish.
SB> 
SB> If these are the IDR standard terms (n, s, p) then fine. However I
SB> was initially confused by the change of meaning and case of n.
SB> Elsewhere we use k for number of neighbours. An equation
SB> K * s * N might be less confusing. A bit of a nit it's
SB> handy if the order of definitions and order of terms in
SB> the equation is the same.

==============

   5.4. Consistency between Advertised Paths and Forwarding Paths

   When using Add-Paths, routers may advertise paths that they have not
   selected as best, and that they are thus not using for traffic
   forwarding.  This is generally not an issue if encapsulation is used
   in the AS as described in [RFC4364] and all forwarding decisions,
   including by the tunnel egress router, are based on label information
   - i.e. if only the ingress router performs an IP FIB lookup.  In this
   situation the dataplane path followed by the packets is the one
   intended by the ingress router, and corresponds to the control plane
   path it selected.

SB> I was looking for discussion on this earlier in the text
SB> as I was confused about forwarding consistency there.

===============


=====================

6. Security Considerations

   TBD

SB> This is a showstopper! It is not possible to advance a document
SB> without a security section.

=====================

9. IANA Considerations

   TBD

SB> This is also a showstopper! If there are no IANA considerations
SB> this needs to be noted.

10. References

   10.1. Normative References

   [RFC2119]        Bradner, S., "Key words for use in RFCs to Indicate
                    Requirement Levels", BCP 14, RFC 2119, March 1997.

   10.2. Informative References

   [Add-Paths]      Walton, D., Retana, A., Chen E., Scudder J.,
                    "Advertisement of Multiple Paths in BGP", draft-
                    ietf-idr-add-paths-07, June 17, 2012.

SB> I cannot see how this can possibly be informative since it is
SB> fundamental to the advice.
SB> I have not checked all of refs for Normative/Informative status
SB> but they do need to be checked.

=============

   [RFC4271]        Rekhter, Y., Li, T., Hares, S., "A Border Gateway
                    Protocol 4 (BGP-4), January 2006.

SB> Nit -  Trailing quote (") missing.

============


A.3. Advertise Paths at decisive step -1

SB> This really needs a reference. What is decisive step minus 1?

==============





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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body bgcolor=3Dwhite =
lang=3DEN-US link=3Dblue vlink=3Dpurple><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Fyi &#8211; Routing directorate review of add-path-guidelines by =
Stewart Bryant. <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Thank you Stewart for your review!<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Sue <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowt=
ext'>From:</span></b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowt=
ext'> rtg-dir [mailto:rtg-dir-bounces@ietf.org] <b>On Behalf Of =
</b>Stewart Bryant<br><b>Sent:</b> Wednesday, May 20, 2015 12:05 =
PM<br><b>To:</b> Jonathan Hardwick<br><b>Cc:</b> =
draft-ietf-idr-add-paths-guidelines@tools.ietf.org; rtg-dir@ietf.org; =
'Alvaro Retana (aretana)'; 'John G. Scudder'; Susan Hares; 'Jon =
Hudson'<br><b>Subject:</b> Re: [RTG-DIR] Routing directorate review of =
draft-ietf-idr-add-paths-guidelines<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><tt><span =
style=3D'font-size:10.0pt'>Hello,</span></tt><span =
style=3D'font-size:10.0pt;font-family:"Courier New"'><br><br><tt>I have =
been selected as the Routing Directorate reviewer for this draft. =
</tt><br><tt>The Routing Directorate seeks to review all routing or =
routing-related </tt><br><tt>drafts as they pass through IETF last call =
and IESG review. The purpose </tt><br><tt>of the review is to provide =
assistance to the Routing ADs. For more </tt><br><tt>information about =
the Routing Directorate, please see </tt><br><tt><a =
href=3D"http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir">http://trac=
.tools.ietf.org/area/rtg/trac/wiki/RtgDir</a></tt><br><br><tt>Although =
these comments are primarily for the use of the Routing ADs, =
</tt><br><tt>it would be helpful if you could consider them along with =
any other </tt><br><tt>IETF Last Call comments that you receive, and =
strive to resolve</tt><br><tt>&nbsp;them through discussion or by =
updating the draft.</tt><br><br><tt>Document: =
draft-ietf-idr-add-paths-guidelines-07.txt</tt><br><tt>Reviewer: Stewart =
Bryant</tt><br><tt>Review Date: 20 May 2015</tt><br><tt>IETF LC End =
Date: Not yet in IETF LC</tt><br><tt>Intended Status: Standards =
Track</tt><br><br><tt>Summary:</tt><br></span><br><tt><span =
style=3D'font-size:10.0pt'>I have significant concerns about this =
document and recommend that the </span></tt><span =
style=3D'font-size:10.0pt;font-family:"Courier New"'><br><tt>Routing ADs =
discuss these issues further with the authors. =
</tt><br><br><tt>(Actually I see that this document has not yet been =
passed to the ADs, </tt><br><tt>so I suggest that the chairs address =
these issues with the authors) </tt><br><br><br><tt>I provide comments =
inline - Please look for SB&gt;</tt><br><br><tt>IDR Working =
Group&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; J. =
Uttaro</tt><br><tt>Internet-Draft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
AT&amp;T</tt><br><tt>Intended status: Standards =
Track</tt><br><tt>Expires: Jun 3, =
2015&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp; P. =
Francois</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IMDEA =
Networks</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; K. =
Patel</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Cisco =
Systems</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; P. =
Mohapatra</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cumulus =
Networks</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; J. =
Haas</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Juniper =
Networks</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; A. =
Simpson</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp; R. =
Fragassi</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Alcatel-Lucent</tt><br><br><br><tt>SB&gt; This document has seven =
authors against a guideline of five.</tt><br><tt>SB&gt; I assume that =
the chairs and ADs are happy with =
this.</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; Dec 3, =
2014</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Best =
Practices for Advertisement of Multiple Paths in =
IBGP</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
draft-ietf-idr-add-paths-guidelines-07.txt</tt><br><br><tt>SB&gt; I =
wonder if this document is correct as ST rather than BCP? Certainly the =
</tt><br><tt>SB&gt; the title and abstract imply a better match with =
BCP.</tt><br><br><tt>SB&gt; There are 9 nits warnings, of which the =
following should be</tt><br><tt>SB&gt; =
addressed:</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
</tt><br><br><tt>&nbsp; Checking nits according to <a =
href=3D"http://www.ietf.org/id-info/checklist">http://www.ietf.org/id-inf=
o/checklist</a> :</tt><br><tt>&nbsp; =
-------------------------------------------------------------------------=
---</tt><br><br><tt>&nbsp; =3D=3D There are 5 instances of lines with =
non-RFC5735-compliant IPv4 =
addresses</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp; in the document.&nbsp; If =
these are example addresses, they should be =
changed.</tt><br><br><br><tt>&nbsp; Miscellaneous =
warnings:</tt><br><tt>&nbsp; =
-------------------------------------------------------------------------=
---</tt><br><br><br><tt>&nbsp; =3D=3D Line 611 has weird spacing: =
'...ltipath&nbsp; selec...'</tt><br><br><br><tt>&nbsp; Checking =
references for intended status: Proposed Standard</tt><br><tt>&nbsp; =
-------------------------------------------------------------------------=
---</tt><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp; (See RFCs 3967 and 4897 for =
information about using normative =
references</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp; to lower-maturity =
documents in RFCs)</tt><br><br><tt>&nbsp; =3D=3D Missing Reference: 'RFC =
4271' is mentioned on line 153, but not defined</tt><br><br><tt>&nbsp; =
=3D=3D Missing Reference: 'RFC-2119' is mentioned on line 175, but not =
defined</tt><br><br><tt>&nbsp; =3D=3D Missing Reference: 'RFC4364' is =
mentioned on line 808, but not defined</tt><br><br><tt>&nbsp; =3D=3D =
Unused Reference: 'RFC2119' is defined on line 912, but no =
explicit</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp; reference was found in the =
text</tt><br><br><tt>&nbsp; =3D=3D Unused Reference: 'RFC4271' is =
defined on line 939, but no =
explicit</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp; reference was found in the =
text</tt><br><br><tt>&nbsp; =3D=3D Outdated reference: A later version =
(-10) exists of</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp; =
draft-ietf-idr-add-paths-07</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D</tt><br><br><br><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D=3D=3D=3D=3D=3D=3D=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br><=
tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; =3D&nbsp; +---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp; =
|RTR|________|RTR|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; =
|RTR|</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp; | E =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | A =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | C =
|</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp; =3D&nbsp; +---+Path A-&gt;+---+&nbsp;&nbsp;&nbsp; =
AS1&nbsp;&nbsp;&nbsp; =
+---+</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp; =
\&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp; \&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
/&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \&nbsp;&nbsp;&nbsp;&nbsp; =
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \&nbsp;&nbsp; =
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D AS3&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |RR =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | 1 =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp; =
\&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp;&nbsp;&nbsp; =
\&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
\&nbsp;&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp;&nbsp;&nbsp; =
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \&nbsp;&nbsp;&nbsp; =
=3D</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp; =3D&nbsp; +---+Path =
B-&gt;+---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp; |RTR|&nbsp; =
______|RTR|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|RTR|</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; =3D&nbsp; | F =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | B =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | D =
|</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp; =3D&nbsp; =
+---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
+---+</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp; =
=3D=3D=3D=3D=3D=3D=3D=3D&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br><=
br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Figure 1: Example Topology</tt><br><br><tt>SB&gt; Surely the =
advertisments go L to R, but the paths</tt><br><tt>SB&gt; actually go R =
to L?</tt><br><br><br><tt>&nbsp;&nbsp; Under these circumstances =
consider the steps required to restore</tt><br><tt>&nbsp;&nbsp; traffic =
from router D to destination XYZ when the link between =
Router</tt><br><tt>SB&gt; For clarification &quot; destination XYZ =
reachable via AS3&quot;</tt><br><tt>&nbsp;&nbsp; A and Router E fails. =
(Assume that router A set next-hop to self when</tt><br><tt>&nbsp;&nbsp; =
advertising path A and that router B is not configured for =
best-</tt><br><tt>&nbsp;&nbsp; external).</tt><br><tt>SB&gt; is =
&quot;best-external&quot; the formal name for this configuration. If =
not</tt><br><tt>SB&gt; I recommend that you use the formal =
name.</tt><br><br><tt>&nbsp;&nbsp; 1. Router A sends a BGP UPDATE =
message Withdrawing its =
advertisement</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; of path =
(A).</tt><br><tt>SB&gt; Presumable &quot;Router A sends a BGP UPDATE =
message to RR1 =
withdrawing...&quot;</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
</tt><br><br><tt>&nbsp;&nbsp; 5. Router D reruns its decisions process, =
determines path (B) to be</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the =
best path, and updates its forwarding table. After this =
step</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; traffic from router D to =
destination XYZ is restored (the =
traffic</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; path has changed from =
A to B).</tt><br><br><tt>SB&gt; Surely &quot; path has changed from path =
A to path =
B&quot;</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br><br><tt>&n=
bsp;&nbsp; 1. Router A sends a BGP UPDATE message withdrawing its =
advertisement</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; of path =
(A).</tt><br><br><tt>SB&gt; Presumable &quot;Router A sends a BGP UPDATE =
message to RR1 withdrawing...&quot;</tt><br><br><br><tt>&nbsp;&nbsp; 2. =
RR1 receives the withdrawal, and propagates it to its other =
client</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; peers, routers B, C =
and D.</tt><br><br><tt>&nbsp;&nbsp; 3. Router D receives the withdrawal, =
reruns the decision process =
and</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; updates the forwarding =
entry for destination XYZ.</tt><br><br><tt>SB&gt; Wait a minuite here. =
What about the other other routers in the </tt><br><tt>SB&gt; network? =
Maybe you are considering a BGP-free core, which is =
fine</tt><br><tt>SB&gt; but that has to be noted up front as a =
constraint, but so far</tt><br><tt>SB&gt; as I can see you do not talk =
about that. In a BGP free core </tt><br><tt>SB&gt; what you say holds, =
but in a regular IP core you may get loops</tt><br><tt>SB&gt; until the =
on path routers have been converged. This really needs =
some</tt><br><tt>SB&gt; text.</tt><br><tt>SB&gt;</tt><br><tt>SB&gt; You =
talk about this later in the text, but you really need =
to</tt><br><tt>SB&gt; at least summarise your important assumptions =
earlier in the text.</tt><br><br><br><tt>&nbsp;&nbsp; 3.2. Load =
Balancing</tt><br><br><tt>&nbsp;&nbsp; Increased path diversity allows =
routers to install several paths in</tt><br><tt>&nbsp;&nbsp; their =
forwarding tables in order to load balance traffic across =
those</tt><br><tt>&nbsp;&nbsp; paths.</tt><br><br><tt>SB&gt; Again the =
matter of BGP free core needs some discussion.</tt><br><tt>SB&gt; In the =
case of non-BGP-free core it's not quite that =
simple.</tt><br><br><tt>&nbsp;&nbsp; 3.3. Churn =
Reduction</tt><br><br><tt>&nbsp;&nbsp; When Add-Paths is used in an AS, =
the availability of additional</tt><br><tt>&nbsp;&nbsp; backup paths =
means failures can be recovered locally with much =
less</tt><br><tt>&nbsp;&nbsp; path exploration in iBGP and therefore =
less updates disseminate in</tt><br><tt>&nbsp;&nbsp; eBGP.&nbsp; When =
the preferred backup path is the post-convergence =
path,</tt><br><tt>&nbsp;&nbsp; churn is =
minimized.</tt><br><br><tt>SB&gt; The text containing &quot;therefore =
less updates disseminate&quot; does </tt><br><tt>SB&gt; not scan =
correctly.</tt><br><tt>SB&gt; BTW When the preferred backup path is the =
post-convergence path</tt><br><tt>SB&gt; you don't get =
loops.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br=
><br><tt>SB&gt; You might consider some RFC2119 language in the =
following para:</tt><br><tt>&nbsp;&nbsp; A BGP UPDATE message from an =
Add-Paths peer may advertise and</tt><br><tt>&nbsp;&nbsp; withdraw more =
than one NLRI belonging to one or more address</tt><br><tt>&nbsp;&nbsp; =
families. In this case Add-Paths may be supported for some of =
the</tt><br><tt>&nbsp;&nbsp; address families and not others. In this =
situation the receiving BGP</tt><br><tt>&nbsp;&nbsp; router should not =
expect that all of the path identifiers in the</tt><br><tt>&nbsp;&nbsp; =
UPDATE message will be the =
same.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><=
br><br><tt>&nbsp;&nbsp; Control Plane Stress: Coping with multiple iBGP =
paths has two</tt><br><tt>&nbsp;&nbsp; implications on the computation =
that a router has to handle. First,</tt><br><tt>&nbsp;&nbsp; it has to =
compute the paths to send to its peers, i.e. more than =
the</tt><br><tt>&nbsp;&nbsp; best path.&nbsp; Second, it also has to =
handle the potential churn related</tt><br><tt>&nbsp;&nbsp; to the =
exchange of those multiple paths.</tt><br><br><tt>SB&gt; Is there any =
SIDR and BGPsec related compute stress that needs </tt><br><tt>SB&gt; to =
be called =
out?</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><b=
r><br><br><tt>&nbsp;&nbsp; 5.2. Scalability =
Considerations</tt><br><br><tt>&nbsp;&nbsp; In terms of scalability, we =
note that advertising multiple paths per</tt><br><tt>&nbsp;&nbsp; prefix =
requires more memory and state than the current behavior =
of</tt><br><tt>&nbsp;&nbsp; advertising the best path only. A BGP =
speaker that does not implement</tt><br><tt>&nbsp;&nbsp; Add-Paths =
maintains send state information in its prefix =
data</tt><br><tt>&nbsp;&nbsp; structure per neighbor as a way to =
determine that the prefix has been</tt><br><tt>&nbsp;&nbsp; advertised =
to the neighbor. With Add-Paths, this information has =
to</tt><br><tt>&nbsp;&nbsp; be replicated on a per path basis that needs =
to be advertised.</tt><br><tt>&nbsp;&nbsp; Mathematically, if &quot;send =
state&quot; size per prefix is 's' bytes, =
number</tt><br><tt>&nbsp;&nbsp; of neighbors is 'n', and number of paths =
being advertised is 'p',</tt><br><tt>&nbsp;&nbsp; then the current =
memory requirement for BGP &quot;send state&quot; =3D n * =
s</tt><br><tt>&nbsp;&nbsp; bytes; with Add-Paths, it becomes n * s * p =
bytes.</tt><br><br><tt>SB&gt; The following are personal preferences =
which can be ingrored if</tt><br><tt>SB&gt; you wish.</tt><br><tt>SB&gt; =
</tt><br><tt>SB&gt; If these are the IDR standard terms (n, s, p) then =
fine. However I</tt><br><tt>SB&gt; was initially confused by the change =
of meaning and case of n.</tt><br><tt>SB&gt; Elsewhere we use k for =
number of neighbours. An equation</tt><br><tt>SB&gt; K * s * N might be =
less confusing. A bit of a nit it's</tt><br><tt>SB&gt; handy if the =
order of definitions and order of terms in</tt><br><tt>SB&gt; the =
equation is the =
same.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br>=
<br><tt>&nbsp;&nbsp; 5.4. Consistency between Advertised Paths and =
Forwarding Paths</tt><br><br><tt>&nbsp;&nbsp; When using Add-Paths, =
routers may advertise paths that they have not</tt><br><tt>&nbsp;&nbsp; =
selected as best, and that they are thus not using for =
traffic</tt><br><tt>&nbsp;&nbsp; forwarding.&nbsp; This is generally not =
an issue if encapsulation is used</tt><br><tt>&nbsp;&nbsp; in the AS as =
described in [RFC4364] and all forwarding =
decisions,</tt><br><tt>&nbsp;&nbsp; including by the tunnel egress =
router, are based on label information</tt><br><tt>&nbsp;&nbsp; - i.e. =
if only the ingress router performs an IP FIB lookup.&nbsp; In =
this</tt><br><tt>&nbsp;&nbsp; situation the dataplane path followed by =
the packets is the one</tt><br><tt>&nbsp;&nbsp; intended by the ingress =
router, and corresponds to the control plane</tt><br><tt>&nbsp;&nbsp; =
path it selected.</tt><br><br><tt>SB&gt; I was looking for discussion on =
this earlier in the text</tt><br><tt>SB&gt; as I was confused about =
forwarding consistency =
there.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt>=
<br><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D</tt><br><br><tt>6. Security =
Considerations</tt><br><br><tt>&nbsp;&nbsp; TBD</tt><br><br><tt>SB&gt; =
This is a showstopper! It is not possible to advance a =
document</tt><br><tt>SB&gt; without a security =
section.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D</tt><br><br><tt>9. IANA =
Considerations</tt><br><br><tt>&nbsp;&nbsp; TBD</tt><br><br><tt>SB&gt; =
This is also a showstopper! If there are no IANA =
considerations</tt><br><tt>SB&gt; this needs to be =
noted.</tt><br><br><tt>10. References</tt><br><br><tt>&nbsp;&nbsp; 10.1. =
Normative References</tt><br><br><tt>&nbsp;&nbsp; =
[RFC2119]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Bradner, S., =
&quot;Key words for use in RFCs to =
Indicate</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Requirement Levels&quot;, BCP 14, RFC 2119, March =
1997.</tt><br><br><tt>&nbsp;&nbsp; 10.2. Informative =
References</tt><br><br><tt>&nbsp;&nbsp; =
[Add-Paths]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Walton, D., Retana, A., Chen =
E., Scudder =
J.,</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
&quot;Advertisement of Multiple Paths in BGP&quot;, =
draft-</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
ietf-idr-add-paths-07, June 17, 2012.</tt><br><br><tt>SB&gt; I cannot =
see how this can possibly be informative since it is</tt><br><tt>SB&gt; =
fundamental to the advice.</tt><br><tt>SB&gt; I have not checked all of =
refs for Normative/Informative status</tt><br><tt>SB&gt; but they do =
need to be =
checked.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br>=
<br><tt>&nbsp;&nbsp; [RFC4271]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Rekhter, Y., Li, T., Hares, S., &quot;A Border =
Gateway</tt><br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Protocol 4 =
(BGP-4), January 2006.</tt><br><br><tt>SB&gt; Nit -&nbsp; Trailing quote =
(&quot;) =
missing.</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br><br=
><br><tt>A.3. Advertise Paths at decisive step -1</tt><br><br><tt>SB&gt; =
This really needs a reference. What is decisive step minus =
1?</tt><br><br><tt>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</tt><br><br=
><br></span><o:p></o:p></p></div></body></html>
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From nobody Sat May 30 16:23:07 2015
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Subject: Re: [Idr] WebEx meeting invitation: idr interim 6/1/2015
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sure would be nice to know the agendas

randy


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Subject: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt
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Content-Type: text/plain;
	charset="utf-8"
Content-Transfer-Encoding: quoted-printable

=20

IDR Working Group Interim 6/1/2015 [10:00 - 11:30am EDT]

=20

[Note: the Web-ex will be available 30 minutes before starting for the =
speakers to adjust slides]

=20

Agenda=20

=20

             1) Agenda Bashing [10:00 - 10:05]   =20

                2) BGP Wide communities =
[draft-raszuk-wide-bgp-communities]=20

                   Robert Raszuk [10:05 - 10:10] [Discussion: =
10:10-10:20]                  =20

                   =
http://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communities/

               =20

                3) BGP RTC [10:25-10:50)=20

                                a) Chair overview of RTC choices =
[10:20-10:25]

                                b) draft-litowski-idr-rtc-interas =
(Adoption 5/31 to 6/14) [10:25-10:35]

                                c) Discussion [10:35-10:45]

                               =20

               =20

                4) BGP Link state model additions:  [10:45-11:10]

                               =20

                                a. draft-wang-idr-eag-distribution =
Update [Michael Wang] [10:45-10:55]

                                b. =
draft-previdi-idr-bgpls-segement-routing-epe-03 [TBD] [10:55-11:05]

                                c. Discussion of Acee's suggestion =
[11:05-11:15]

                               =20

                   Existing ls drafts are:=20

                                1) draft-ietf-idr-ls-distribution-10 (In =
IESG processing)

                                2) =
draft-ietf-idr-ls-distribution-impl-04 (IESG wants on wiki]=20

                                3) draft-ietf-idr-te-lsp-distribution-03 =
(WG draft )

=20

                                Proposed additions are:                  =
             =20

                                c) draft-wang-idr-eag-distribution (WG =
Adoption 5/20 to 6/3)

                                d) =
draft-previdi-idr-bgpls-segment-routing-epe-03(WG Adoption 5/31 to 6/14)

                                e) =
draft-psarkar-idr-bgp-ls-node-admin-tag-extension-00 (no request for =
adoption)

                                Based on the comments from Acee last =
week=20

                                =
http://www.ietf.org/mail-archive/web/idr/current/msg14425.html)=20

                                on harmonizing the additions to =
draft-idr-ls-distribution.=20

                                We are examining the BGP LS additions =
this week. =20

                               =20

                5) BGP I2RS Use Case =20

                                =
draft-keyupate-idr-i2rs-bgp-usecases-00.txt [Sue Hares] [11:15-11:30]

=20

Background reading:=20

=20

RTC Drafts under consideration:=20

1) draft-ietf-rtc-no-rtc (WG LC 5/22 to 6/5 in progress)=20

  http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/

=20

2) draft-litkowski-idr-rtc-interas (WG adoption call 5/31 to 6/14)

   http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/      =
                        =20

=20

3) draft-ietf-idr-legacy-rtc-05   (WG draft)=20

http://datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/

=20

4) draft-ietf-idr-rtc-hierarchical-rr-00 (WG draft)=20

http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-hierarchical-rr/

=20

Web ex:=20

https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe242a310725=
f

               =20

Meeting number:            649 193 591=20

Meeting password:         john.knows.all

=20

1-877-668-4493 Call-in toll free number (US/Canada)

1-650-479-3208 Call-in toll number (US/Canada)

=20

IDR Minutes:=20

http://etherpad.tools.ietf.org:9000/p/idr-interim-06-01-2015-Minutes

               =20

IDR Interim Virtual Blue Sheets

http://etherpad.tools.ietf.org:9000/p/idr-interim-6-01-2015-vBlueSheets

               =20

Next Interims: 6/15 (Yang models) and 6/29 (Route Server, Tools, Yang, =
and nexthop)

=20

From: IDR Working Group [mailto:messenger@webex.com]=20
Sent: Saturday, May 30, 2015 6:02 PM
To: idr-chairs@tools.ietf.org
Subject: (Forward to others) WebEx meeting invitation: idr interim =
6/1/2015

=20




You can forward this invitation to others.=20

=20


Hello,=20


IDR Working Group invites you to join this WebEx meeting.=20

=20


=20

=20


idr interim 6/1/2015=20


Monday, June 1, 2015=20


10:00 am  |  Eastern Daylight Time (New York, GMT-04:00)  |  1.5 hrs=20

=20


=20

=20


 =
<https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe242a31072=
5f> Join WebEx meeting=20

=20


Meeting number:=20

649 193 591=20


Meeting password:

john.knows.all

=20


=20

=20


Join by phone


1-877-668-4493 Call-in toll free number (US/Canada)


1-650-479-3208 Call-in toll number (US/Canada)


Access code: 649 193 591


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c9> Add this meeting to your calendar.

=20


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Can't join the meeting?  <https://ietf.webex.com/ietf/mc> Contact =
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IMPORTANT NOTICE: Please note that this WebEx service allows audio and =
other information sent during the session to be recorded, which may be =
discoverable in a legal matter. By joining this session, you =
automatically consent to such recordings. If you do not consent to being =
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session.

=20


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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US =
link=3D"#666666" vlink=3D"#666666"><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>IDR Working Group Interim 6/1/2015 [10:00 - 11:30am =
EDT]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>[Note: the Web-ex will be available 30 minutes before starting for =
the speakers to adjust slides]<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Agenda <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0 =
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A01) =
Agenda Bashing [10:00 - 10:05]=C2=A0=C2=A0=C2=A0 =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 2) BGP Wide communities =
[draft-raszuk-wide-bgp-communities] <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0=C2=A0Robert Raszuk [10:05 - 10:10] =
[Discussion: =
10:10-10:20]=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =
=C2=A0=C2=A0=C2=A0http://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-c=
ommunities/<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 3) BGP RTC [10:25-10:50) <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 a) Chair overview of RTC choices =
[10:20-10:25]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 b) =
draft-litowski-idr-rtc-interas (Adoption 5/31 to 6/14) =
[10:25-10:35]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 c) Discussion =
[10:35-10:45]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 4) BGP Link state model additions:=C2=A0 =
[10:45-11:10]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 a. =
draft-wang-idr-eag-distribution Update [Michael Wang] =
[10:45-10:55]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 b. =
draft-previdi-idr-bgpls-segement-routing-epe-03 [TBD] =
[10:55-11:05]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 c. Discussion of Acee's =
suggestion [11:05-11:15]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =C2=A0=C2=A0 Existing ls drafts are: =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1) =
draft-ietf-idr-ls-distribution-10 (In IESG =
processing)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 2) =
draft-ietf-idr-ls-distribution-impl-04 (IESG wants on wiki] =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 3) =
draft-ietf-idr-te-lsp-distribution-03 (WG draft =
)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Proposed additions are: =
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 c) =
draft-wang-idr-eag-distribution (WG Adoption 5/20 to =
6/3)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 d) =
draft-previdi-idr-bgpls-segment-routing-epe-03(WG Adoption 5/31 to =
6/14)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 e) =
draft-psarkar-idr-bgp-ls-node-admin-tag-extension-00 (no request for =
adoption)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Based on the comments from Acee =
last week <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
http://www.ietf.org/mail-archive/web/idr/current/msg14425.html) =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 on harmonizing the additions to =
draft-idr-ls-distribution. <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 We are examining the BGP LS =
additions this week.=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 5) BGP I2RS Use Case=C2=A0 <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
draft-keyupate-idr-i2rs-bgp-usecases-00.txt [Sue Hares] =
[11:15-11:30]<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Background reading: <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>RTC Drafts under consideration: <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>1) draft-ietf-rtc-no-rtc (WG LC 5/22 to 6/5 in progress) =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0<a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/">http:/=
/datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/</a><o:p></o:p></span>=
</p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>2) draft-litkowski-idr-rtc-interas (WG adoption call 5/31 to =
6/14)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0 =
http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>3) draft-ietf-idr-legacy-rtc-05=C2=A0=C2=A0 (WG draft) =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/">http:=
//datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/</a><o:p></o:p></spa=
n></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>4) draft-ietf-idr-rtc-hierarchical-rr-00 (WG draft) =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-hierarchical-r=
r/">http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-hierarchical-rr/</=
a><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Web ex: <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe242a310=
725f<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Meeting number: =
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 649 193 591 =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Meeting password:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
john.knows.all<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>1-877-668-4493 Call-in toll free number =
(US/Canada)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>1-650-479-3208 Call-in toll number =
(US/Canada)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>IDR Minutes: <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>http://etherpad.tools.ietf.org:9000/p/idr-interim-06-01-2015-Minutes<o=
:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>IDR Interim Virtual Blue Sheets<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>http://etherpad.tools.ietf.org:9000/p/idr-interim-6-01-2015-vBlueSheet=
s<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Next Interims: 6/15 (Yang models) and 6/29 (Route Server, Tools, =
Yang, and nexthop)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
IDR Working Group [mailto:messenger@webex.com] <br><b>Sent:</b> =
Saturday, May 30, 2015 6:02 PM<br><b>To:</b> =
idr-chairs@tools.ietf.org<br><b>Subject:</b> (Forward to others) WebEx =
meeting invitation: idr interim =
6/1/2015<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 align=3Dleft width=3D"100%" =
style=3D'width:100.0%'><tr><td style=3D'padding:3.75pt 0in 0in =
0in'><table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
align=3Dleft width=3D525 =
style=3D'width:393.75pt;margin-left:3.75pt'><tr><td valign=3Dtop =
style=3D'padding:0in 0in 0in 0in'><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D"100%" style=3D'width:100.0%'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>You can forward this invitation to others. =
<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#4D4D4D'=
>Hello, <o:p></o:p></span></p></td></tr><tr><td style=3D'padding:7.5pt =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#4D4D4D'=
>IDR Working Group invites you to join this WebEx meeting. =
<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D"100%" style=3D'width:100.0%'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-family:"Arial","sans-serif";color:#4D4D4D'>idr interim =
6/1/2015</span></b><span =
style=3D'font-family:"Arial","sans-serif";color:#4D4D4D'> =
<o:p></o:p></span></p></td></tr><tr><td style=3D'padding:0in 0in 0in =
0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Monday, June 1, 2015 <o:p></o:p></span></p></td></tr><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#1F497D'=
>10:00</span><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
> am&nbsp;&nbsp;|&nbsp;&nbsp;Eastern Daylight Time (New York, =
GMT-04:00)&nbsp;&nbsp;|&nbsp;&nbsp;</span><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#1F497D'=
>1.5</span><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
> hrs <o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D0 =
style=3D'width:0in;width:auto!important'><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-family:"Arial","sans-serif";color:#00AFF9'><a =
href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe24=
2a310725f"><b><span style=3D'color:#00AFF9;text-decoration:none'>Join =
WebEx meeting</span></b><span =
style=3D'color:#00AFF9;text-decoration:none'> =
</span></a><o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D0 =
style=3D'width:0in;width:auto!important'><tr><td style=3D'padding:0in =
3.75pt 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Meeting number: <o:p></o:p></span></p></td><td style=3D'padding:0in 0in =
0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>649 193 591 <o:p></o:p></span></p></td></tr><tr><td =
style=3D'padding:0in 3.75pt 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Meeting password:<o:p></o:p></span></p></td><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>john.knows.all<o:p></o:p></span></p></td></tr></table><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-family:"Arial","sans-serif";color:#666666'>Join by =
phone</span></b><span =
style=3D'font-family:"Arial","sans-serif";color:#666666'><o:p></o:p></spa=
n></p></td></tr><tr><td style=3D'padding:0in 0in 0in 0in'><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>1-877-668-4493</span></b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;Call-in toll free number =
(US/Canada)<o:p></o:p></span></p></td></tr><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>1-650-479-3208</span></b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;Call-in toll number =
(US/Canada)<o:p></o:p></span></p></td></tr><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Access code:&nbsp;649 193 591<o:p></o:p></span></p></td></tr><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
><a href=3D"http://www.webex.com/pdf/tollfree_restrictions.pdf"><span =
style=3D'font-size:10.0pt;color:#00AFF9;text-decoration:none'>Toll-free =
calling =
restrictions</span></a><o:p></o:p></span></p></td></tr></table><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666'=
><a =
href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dm9cf69186e24b5baddb3f746=
7fb635fc9"><span style=3D'color:#00AFF9;text-decoration:none'>Add this =
meeting</span></a> to your =
calendar.<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666'=
>Can't join the meeting? <a =
href=3D"https://ietf.webex.com/ietf/mc"><span =
style=3D'color:#00AFF9;text-decoration:none'>Contact support.</span></a> =
<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:7.5pt'><td style=3D'padding:0in 0in 0in =
0in;height:7.5pt'><p class=3DMsoNormal =
style=3D'mso-line-height-alt:7.5pt;mso-element:frame;mso-element-frame-hs=
pace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph=
;mso-element-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666;=
display:none'><o:p>&nbsp;</o:p></span></p><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:9.0pt;font-family:"Arial","sans-serif";color:#A0A0A0'>=
IMPORTANT NOTICE: Please note that this WebEx service allows audio and =
other information sent during the session to be recorded, which may be =
discoverable in a legal matter. By joining this session, you =
automatically consent to such recordings. If you do not consent to being =
recorded, discuss your concerns with the host or do not join the =
session.<o:p></o:p></span></p></td></tr></table></td></tr></table></td></=
tr></table><p class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
------=_NextPart_001_008C_01D09B10.35F8BC60--

------=_NextPart_000_008B_01D09B10.35F8BC60
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BEGIN:VTIMEZONE=0A=
TZID:Eastern Time=0A=
BEGIN:STANDARD=0A=
DTSTART:20131101T020000=0A=
RRULE:FREQ=3DYEARLY;INTERVAL=3D1;BYDAY=3D1SU;BYMONTH=3D11=0A=
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BEGIN:VEVENT=0A=
ATTENDEE;CN=3D"IDR Working =
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g=0A=
ORGANIZER;CN=3D"IDR Working Group":MAILTO:idr-chairs@tools.ietf.org=0A=
DTSTART;TZID=3D"Eastern Time":20150601T093000=0A=
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UID:ae00a6c6-cf04-4475-8d51-34fa4ecce68d=0A=
DTSTAMP:20150601T133000Z=0A=
DESCRIPTION:\n\n\nJOIN WEBEX =
MEETING\nhttps://ietf.webex.com/ietf/j.php?MTID=3Dmd4c9394a2c878d7bd3daed=
c35e0ddde0\nMeeting number: 649 193 591\nMeeting password: =
john.knows.all\n\n\nJOIN BY PHONE\n1-877-668-4493 Call-in toll free =
number (US/Canada) \n1-650-479-3208 Call-in toll number =
(US/Canada)\nAccess code: 649 193 591\n\nToll-free dialing restrictions: =
\nhttp://www.webex.com/pdf/tollfree_restrictions.pdf\n\n\n\nCan't join =
the meeting? Contact support =
here:\nhttps://ietf.webex.com/ietf/mc\n\n\nIMPORTANT NOTICE: Please note =
that this WebEx service allows audio and other information sent during =
the session to be recorded, which may be discoverable in a legal matter. =
By joining this session, you automatically consent to such recordings. =
If you do not consent to being recorded, discuss your concerns with the =
host or do not join the session.\n=0A=
X-ALT-DESC;FMTTYPE=3Dtext/html:	<FONT SIZE=3D"1" =
FACE=3D"ARIAL">&nbsp;<BR> <FONT SIZE=3D"4" FACE=3D"ARIAL">		<a					=
href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dmd4c9394a2c878d7bd3daedc=
35e0ddde0"><FONT SIZE=3D"3" COLOR=3D"#00AFF9" FACE=3D"Arial">Join WebEx =
meeting</FONT></a>			<table>				<tr>					<td>						<FONT SIZE=3D"2" =
COLOR=3D"#666666" FACE=3D"arial">Meeting number:</FONT>					</td>					=
<td>						<FONT SIZE=3D"2" COLOR=3D"#666666" FACE=3D"arial">649 193 =
591</FONT>					</td>				</tr>			</table>			<table><tr><td><FONT =
SIZE=3D"2" COLOR=3D"#666666" FACE=3D"arial">Meeting =
password:</FONT></td><td><FONT SIZE=3D"2"  COLOR=3D"#666666" =
FACE=3D"arial">john.knows.all</FONT></td></tr></table>		</FONT><FONT =
SIZE=3D"1" FACE=3D"ARIAL">&nbsp;<BR>&nbsp;<BR></FONT><FONT SIZE=3D"4" =
FACE=3D"ARIAL"><FONT SIZE=3D"3" COLOR=3D"#666666" FACE=3D"arial">Join by =
phone</FONT>&nbsp; <BR><FONT SIZE=3D"2" COLOR=3D"#666666" =
FACE=3D"arial"><strong>1-877-668-4493</strong>&nbsp;Call-in toll free =
number (US/Canada)</FONT>&nbsp; <BR><FONT SIZE=3D"2" COLOR=3D"#666666" =
FACE=3D"arial"><strong>1-650-479-3208</strong>&nbsp;Call-in toll number =
(US/Canada)</FONT>&nbsp; <BR><FONT SIZE=3D"2" COLOR=3D"#666666" =
FACE=3D"arial">Access code: 649 193 591</FONT>&nbsp; <BR><a =
href=3D"http://www.webex.com/pdf/tollfree_restrictions.pdf"><FONT =
SIZE=3D"1" COLOR=3D"#00AFF9" FACE=3D"arial">Toll-free calling =
restrictions</FONT></a> &nbsp; <BR></FONT><BR><BR>	&nbsp;<BR>	<FONT =
SIZE=3D"1" COLOR=3D"#666666" FACE=3D"arial">				Can't join the =
meeting?</FONT>	<a href=3D"https://ietf.webex.com/ietf/mc">	<FONT =
SIZE=3D"1" COLOR=3D"#00AFF9" FACE=3D"Arial">Contact support.</FONT></a>	=
&nbsp;<BR>&nbsp;<BR><FONT COLOR=3D"#A0A0A0" size=3D"1" =
FACE=3D"arial">IMPORTANT NOTICE: Please note that this WebEx service =
allows audio and other information sent during the session to be =
recorded, which may be discoverable in a legal matter. By joining this =
session, you automatically consent to such recordings. If you do not =
consent to being recorded, discuss your concerns with the host or do not =
join the session.</FONT></FONT>=0A=
SUMMARY:idr interim 6/1/2015=0A=
PRIORITY:5=0A=
CLASS:PUBLIC=0A=
BEGIN:VALARM=0A=
TRIGGER:-PT5M=0A=
ACTION:DISPLAY=0A=
DESCRIPTION:Reminder=0A=
END:VALARM=0A=
END:VEVENT=0A=
END:VCALENDAR=0A=

------=_NextPart_000_008B_01D09B10.35F8BC60--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt
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Date: Sun, 31 May 2015 00:30:16 +0000
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Cc: 'Alia Atlas' <akatlas@juniper.net>, 'Deborah Brungard' <dbrungard@att.com>
Subject: Re: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt
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From nobody Sat May 30 17:55:09 2015
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Subject: Re: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt
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Acee:=20

=20

This sounds good.  You=E2=80=99ll do WG review and IDR cross-review on =
the BGP-LS attribute TLVs. If the proposal for this TLV comes first in =
IDR, how do you want to handle it?  IDR can review the context and then =
send it on to IS-IS and OSPF.=20

=20

Sue=20

=20

From: Acee Lindem (acee) [mailto:acee@cisco.com]=20
Sent: Saturday, May 30, 2015 8:30 PM
To: Susan Hares; idr@ietf.org
Cc: 'Alia Atlas'; 'Deborah Brungard'
Subject: Re: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt

=20

Unfortunately, I have another IETF Design Team meeting during this slot =
and will not be able to discuss my suggestion. However, my thought is =
that since Hannes is the editor of the BGP LS Draft and I was the =
routing directorate reviewer, we could respectively identify IS-IS and =
OSPF drafts which would require BGP LS attribute TLVs. At that point, =
these TLVs could then be added to the IGP draft and a cross-WG review =
could be done prior to the request for publication. =20

Thanks,

Acee=20

=20

From: Susan Hares <shares@ndzh.com>
Date: Saturday, May 30, 2015 at 7:38 PM
To: "idr@ietf.org" <idr@ietf.org>
Cc: 'Alia Atlas' <akatlas@juniper.net>, 'Deborah Brungard' =
<dbrungard@att.com>
Subject: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt

=20

=20

IDR Working Group Interim 6/1/2015 [10:00 - 11:30am EDT]

=20

[Note: the Web-ex will be available 30 minutes before starting for the =
speakers to adjust slides]

=20

Agenda=20

=20

             1) Agenda Bashing [10:00 - 10:05]   =20

                2) BGP Wide communities =
[draft-raszuk-wide-bgp-communities]=20

                   Robert Raszuk [10:05 - 10:10] [Discussion: =
10:10-10:20]                  =20

                    =
<http://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communities/> =
http://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communities/

               =20

                3) BGP RTC [10:25-10:50)=20

                                a) Chair overview of RTC choices =
[10:20-10:25]

                                b) draft-litowski-idr-rtc-interas =
(Adoption 5/31 to 6/14) [10:25-10:35]

                                c) Discussion [10:35-10:45]

                               =20

               =20

                4) BGP Link state model additions:  [10:45-11:10]

                               =20

                                a. draft-wang-idr-eag-distribution =
Update [Michael Wang] [10:45-10:55]

                                b. =
draft-previdi-idr-bgpls-segement-routing-epe-03 [TBD] [10:55-11:05]

                                c. Discussion of Acee's suggestion =
[11:05-11:15]

                               =20

                   Existing ls drafts are:=20

                                1) draft-ietf-idr-ls-distribution-10 (In =
IESG processing)

                                2) =
draft-ietf-idr-ls-distribution-impl-04 (IESG wants on wiki]=20

                                3) draft-ietf-idr-te-lsp-distribution-03 =
(WG draft )

=20

                                Proposed additions are:                  =
             =20

                                c) draft-wang-idr-eag-distribution (WG =
Adoption 5/20 to 6/3)

                                d) =
draft-previdi-idr-bgpls-segment-routing-epe-03(WG Adoption 5/31 to 6/14)

                                e) =
draft-psarkar-idr-bgp-ls-node-admin-tag-extension-00 (no request for =
adoption)

                                Based on the comments from Acee last =
week=20

                                 =
<http://www.ietf.org/mail-archive/web/idr/current/msg14425.html> =
http://www.ietf.org/mail-archive/web/idr/current/msg14425.html)=20

                                on harmonizing the additions to =
draft-idr-ls-distribution.=20

                                We are examining the BGP LS additions =
this week. =20

                               =20

                5) BGP I2RS Use Case =20

                                =
draft-keyupate-idr-i2rs-bgp-usecases-00.txt [Sue Hares] [11:15-11:30]

=20

Background reading:=20

=20

RTC Drafts under consideration:=20

1) draft-ietf-rtc-no-rtc (WG LC 5/22 to 6/5 in progress)=20

   <http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/> =
http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/

=20

2) draft-litkowski-idr-rtc-interas (WG adoption call 5/31 to 6/14)

    <http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/> =
http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/         =
                     =20

=20

3) draft-ietf-idr-legacy-rtc-05   (WG draft)=20

 <http://datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/> =
http://datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/

=20

4) draft-ietf-idr-rtc-hierarchical-rr-00 (WG draft)=20

 <http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-hierarchical-rr/> =
http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-hierarchical-rr/

=20

Web ex:=20

 =
<https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe242a31072=
5f> =
https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe242a310725=
f

               =20

Meeting number:            649 193 591=20

Meeting password:         john.knows.all

=20

1-877-668-4493 Call-in toll free number (US/Canada)

1-650-479-3208 Call-in toll number (US/Canada)

=20

IDR Minutes:=20

 <http://etherpad.tools.ietf.org:9000/p/idr-interim-06-01-2015-Minutes> =
http://etherpad.tools.ietf.org:9000/p/idr-interim-06-01-2015-Minutes

               =20

IDR Interim Virtual Blue Sheets

 =
<http://etherpad.tools.ietf.org:9000/p/idr-interim-6-01-2015-vBlueSheets>=
 http://etherpad.tools.ietf.org:9000/p/idr-interim-6-01-2015-vBlueSheets

               =20

Next Interims: 6/15 (Yang models) and 6/29 (Route Server, Tools, Yang, =
and nexthop)

=20

From: IDR Working Group [ <mailto:messenger@webex.com> =
mailto:messenger@webex.com]=20
Sent: Saturday, May 30, 2015 6:02 PM
To:  <mailto:idr-chairs@tools.ietf.org> idr-chairs@tools.ietf.org
Subject: (Forward to others) WebEx meeting invitation: idr interim =
6/1/2015

=20




You can forward this invitation to others.=20

=20


Hello,=20


IDR Working Group invites you to join this WebEx meeting.=20

=20


=20

=20


idr interim 6/1/2015


Monday, June 1, 2015=20


10:00 am  |  Eastern Daylight Time (New York, GMT-04:00)  |  1.5 hrs=20

=20


=20

=20


 =
<https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe242a31072=
5f> Join WebEx meeting

=20


Meeting number:=20

649 193 591=20


Meeting password:

john.knows.all

=20


=20

=20


Join by phone


1-877-668-4493 Call-in toll free number (US/Canada)


1-650-479-3208 Call-in toll number (US/Canada)


Access code: 649 193 591


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=20


 =
<https://ietf.webex.com/ietf/j.php?MTID=3Dm9cf69186e24b5baddb3f7467fb635f=
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Can't join the meeting?  <https://ietf.webex.com/ietf/mc> Contact =
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IMPORTANT NOTICE: Please note that this WebEx service allows audio and =
other information sent during the session to be recorded, which may be =
discoverable in a legal matter. By joining this session, you =
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session.

=20


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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US =
link=3D"#666666" vlink=3D"#666666"><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Acee: <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>This sounds good. =C2=A0You=E2=80=99ll do WG review and IDR =
cross-review on the BGP-LS attribute TLVs. If the proposal for this TLV =
comes first in IDR, how do you want to handle it? =C2=A0IDR can review =
the context and then send it on to IS-IS and OSPF. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Sue <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Acee Lindem (acee) [mailto:acee@cisco.com] <br><b>Sent:</b> Saturday, =
May 30, 2015 8:30 PM<br><b>To:</b> Susan Hares; =
idr@ietf.org<br><b>Cc:</b> 'Alia Atlas'; 'Deborah =
Brungard'<br><b>Subject:</b> Re: [Idr] Idr interim on 6/1/2015 - 10:00am =
to 11:30am edt<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'=
>Unfortunately, I have another IETF Design Team meeting during this slot =
and will not be able to discuss my suggestion. However, my thought is =
that since Hannes is the editor of the BGP LS Draft and I was the =
routing directorate reviewer, we could respectively identify IS-IS and =
OSPF drafts which would require BGP LS attribute TLVs. At that point, =
these TLVs could then be added to the IGP draft and a cross-WG review =
could be done prior to the request for publication. =
&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'=
>Thanks,<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'=
>Acee&nbsp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'=
><o:p>&nbsp;</o:p></span></p></div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'=
>From: </span></b><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'=
>Susan Hares &lt;<a =
href=3D"mailto:shares@ndzh.com">shares@ndzh.com</a>&gt;<br><b>Date: =
</b>Saturday, May 30, 2015 at 7:38 PM<br><b>To: </b>&quot;<a =
href=3D"mailto:idr@ietf.org">idr@ietf.org</a>&quot; &lt;<a =
href=3D"mailto:idr@ietf.org">idr@ietf.org</a>&gt;<br><b>Cc: </b>'Alia =
Atlas' &lt;<a =
href=3D"mailto:akatlas@juniper.net">akatlas@juniper.net</a>&gt;, =
'Deborah Brungard' &lt;<a =
href=3D"mailto:dbrungard@att.com">dbrungard@att.com</a>&gt;<br><b>Subject=
: </b>[Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am =
edt<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'=
><o:p>&nbsp;</o:p></span></p></div><blockquote =
style=3D'border:none;border-left:solid #B5C4DF 4.5pt;padding:0in 0in 0in =
4.0pt;margin-left:3.75pt;margin-right:0in' =
id=3D"MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>IDR Working Group Interim 6/1/2015 [10:00 - 11:30am EDT]</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>[Note: the Web-ex will be available 30 minutes before starting for =
the speakers to adjust slides]</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Agenda </span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp; =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1) =
Agenda Bashing [10:00 - 10:05]&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; 2) BGP Wide communities =
[draft-raszuk-wide-bgp-communities] </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;Robert Raszuk [10:05 - 10:10] =
[Discussion: =
10:10-10:20]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;<a =
href=3D"http://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communities=
/"><span =
style=3D'font-family:"Arial","sans-serif"'>http://datatracker.ietf.org/do=
c/draft-raszuk-wide-bgp-communities/</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; 3) BGP RTC [10:25-10:50) </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a) Chair overview of RTC =
choices [10:20-10:25]</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) =
draft-litowski-idr-rtc-interas (Adoption 5/31 to 6/14) =
[10:25-10:35]</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) Discussion =
[10:35-10:45]</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; 4) BGP Link state model additions:&nbsp; =
[10:45-11:10]</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a. =
draft-wang-idr-eag-distribution Update [Michael Wang] =
[10:45-10:55]</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b. =
draft-previdi-idr-bgpls-segement-routing-epe-03 [TBD] =
[10:55-11:05]</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c. Discussion of Acee's =
suggestion [11:05-11:15]</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; Existing ls drafts are: </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1) =
draft-ietf-idr-ls-distribution-10 (In IESG processing)</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2) =
draft-ietf-idr-ls-distribution-impl-04 (IESG wants on wiki] </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3) =
draft-ietf-idr-te-lsp-distribution-03 (WG draft )</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Proposed additions are: =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) =
draft-wang-idr-eag-distribution (WG Adoption 5/20 to 6/3)</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d) =
draft-previdi-idr-bgpls-segment-routing-epe-03(WG Adoption 5/31 to =
6/14)</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; e) =
draft-psarkar-idr-bgp-ls-node-admin-tag-extension-00 (no request for =
adoption)</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Based on the comments from =
Acee last week </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a =
href=3D"http://www.ietf.org/mail-archive/web/idr/current/msg14425.html"><=
span =
style=3D'font-family:"Arial","sans-serif"'>http://www.ietf.org/mail-archi=
ve/web/idr/current/msg14425.html</span></a>) </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; on harmonizing the additions =
to draft-idr-ls-distribution. </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We are examining the BGP LS =
additions this week.&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; 5) BGP I2RS Use Case&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
draft-keyupate-idr-i2rs-bgp-usecases-00.txt [Sue Hares] =
[11:15-11:30]</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Background reading: </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>RTC Drafts under consideration: </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>1) draft-ietf-rtc-no-rtc (WG LC 5/22 to 6/5 in progress) </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;<a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-no-rt/"><span =
style=3D'font-family:"Arial","sans-serif"'>http://datatracker.ietf.org/do=
c/draft-ietf-idr-rtc-no-rt/</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>2) draft-litkowski-idr-rtc-interas (WG adoption call 5/31 to =
6/14)</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp; <a =
href=3D"http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/"=
><span =
style=3D'font-family:"Arial","sans-serif"'>http://datatracker.ietf.org/do=
c/draft-litkowski-idr-rtc-interas/</span></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp; </span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>3) draft-ietf-idr-legacy-rtc-05&nbsp;&nbsp; (WG draft) </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-legacy-rtc/"><span=
 =
style=3D'font-family:"Arial","sans-serif"'>http://datatracker.ietf.org/do=
c/draft-ietf-idr-legacy-rtc/</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>4) draft-ietf-idr-rtc-hierarchical-rr-00 (WG draft) </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"http://datatracker.ietf.org/doc/draft-ietf-idr-rtc-hierarchical-r=
r/"><span =
style=3D'font-family:"Arial","sans-serif"'>http://datatracker.ietf.org/do=
c/draft-ietf-idr-rtc-hierarchical-rr/</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Web ex: </span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe24=
2a310725f"><span =
style=3D'font-family:"Arial","sans-serif"'>https://ietf.webex.com/ietf/j.=
php?MTID=3Dm689576316eaf19b397fbe242a310725f</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Meeting number: =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 649 193 591 =
</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Meeting password:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
john.knows.all</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>1-877-668-4493 Call-in toll free number (US/Canada)</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>1-650-479-3208 Call-in toll number (US/Canada)</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span style=3D'color:black'><o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>IDR Minutes: </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"http://etherpad.tools.ietf.org:9000/p/idr-interim-06-01-2015-Minu=
tes"><span =
style=3D'font-family:"Arial","sans-serif"'>http://etherpad.tools.ietf.org=
:9000/p/idr-interim-06-01-2015-Minutes</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>IDR Interim Virtual Blue Sheets</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><a =
href=3D"http://etherpad.tools.ietf.org:9000/p/idr-interim-6-01-2015-vBlue=
Sheets"><span =
style=3D'font-family:"Arial","sans-serif"'>http://etherpad.tools.ietf.org=
:9000/p/idr-interim-6-01-2015-vBlueSheets</span></a></span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; </span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Next Interims: 6/15 (Yang models) and 6/29 (Route Server, Tools, =
Yang, and nexthop)</span><span =
style=3D'color:black'><o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>&nbsp;</span><span =
style=3D'color:black'><o:p></o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>=
From:</span></b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>=
 IDR Working Group [<a href=3D"mailto:messenger@webex.com"><span =
style=3D'font-family:"Arial","sans-serif"'>mailto:messenger@webex.com</sp=
an></a>] <br><b>Sent:</b> Saturday, May 30, 2015 6:02 PM<br><b>To:</b> =
<a href=3D"mailto:idr-chairs@tools.ietf.org"><span =
style=3D'font-family:"Arial","sans-serif"'>idr-chairs@tools.ietf.org</spa=
n></a><br><b>Subject:</b> (Forward to others) WebEx meeting invitation: =
idr interim 6/1/2015</span><span =
style=3D'color:black'><o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p><table =
class=3DMsoNormalTable border=3D0 cellpadding=3D0 align=3Dleft =
width=3D"100%" style=3D'width:100.0%'><tr><td style=3D'padding:3.75pt =
0in 0in 0in'><table class=3DMsoNormalTable border=3D0 cellpadding=3D0 =
align=3Dleft width=3D525 =
style=3D'width:393.75pt;margin-left:3.75pt'><tr><td valign=3Dtop =
style=3D'padding:0in 0in 0in 0in'><table class=3DMsoNormalTable =
border=3D0 cellpadding=3D0 width=3D"100%" style=3D'width:100.0%'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>You can forward this invitation to others. =
</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#4D4D4D'=
>Hello, </span><o:p></o:p></p></td></tr><tr><td style=3D'padding:7.5pt =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#4D4D4D'=
>IDR Working Group invites you to join this WebEx meeting. =
</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D"100%" style=3D'width:100.0%'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-family:"Arial","sans-serif";color:#4D4D4D'>idr interim =
6/1/2015</span></b><o:p></o:p></p></td></tr><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Monday, June 1, 2015 </span><o:p></o:p></p></td></tr><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#1F497D'=
>10:00</span><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
> am&nbsp;&nbsp;|&nbsp;&nbsp;Eastern Daylight Time (New York, =
GMT-04:00)&nbsp;&nbsp;|&nbsp;&nbsp;</span><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#1F497D'=
>1.5</span><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
> hrs </span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D0 =
style=3D'width:0in;width:auto!important'><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-family:"Arial","sans-serif";color:#00AFF9'><a =
href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dm689576316eaf19b397fbe24=
2a310725f"><b><span style=3D'color:#00AFF9;text-decoration:none'>Join =
WebEx meeting</span></b></a></span><o:p></o:p></p></td></tr></table><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D0 =
style=3D'width:0in;width:auto!important'><tr><td style=3D'padding:0in =
3.75pt 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Meeting number: </span><o:p></o:p></p></td><td style=3D'padding:0in 0in =
0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>649 193 591 </span><o:p></o:p></p></td></tr><tr><td =
style=3D'padding:0in 3.75pt 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Meeting password:</span><o:p></o:p></p></td><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>john.knows.all</span><o:p></o:p></p></td></tr></table><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-family:"Arial","sans-serif";color:#666666'>Join by =
phone</span></b><o:p></o:p></p></td></tr><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>1-877-668-4493</span></b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;Call-in toll free number =
(US/Canada)</span><o:p></o:p></p></td></tr><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>1-650-479-3208</span></b><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;Call-in toll number =
(US/Canada)</span><o:p></o:p></p></td></tr><tr><td style=3D'padding:0in =
0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>Access code:&nbsp;649 193 591</span><o:p></o:p></p></td></tr><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
><a href=3D"http://www.webex.com/pdf/tollfree_restrictions.pdf"><span =
style=3D'font-size:10.0pt;color:#00AFF9;text-decoration:none'>Toll-free =
calling =
restrictions</span></a></span><o:p></o:p></p></td></tr></table><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666'=
><a =
href=3D"https://ietf.webex.com/ietf/j.php?MTID=3Dm9cf69186e24b5baddb3f746=
7fb635fc9"><span style=3D'color:#00AFF9;text-decoration:none'>Add this =
meeting</span></a> to your =
calendar.</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:15.0pt'><td style=3D'padding:0in 0in 0in =
0in;height:15.0pt'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666'=
>Can't join the meeting? <a =
href=3D"https://ietf.webex.com/ietf/mc"><span =
style=3D'color:#00AFF9;text-decoration:none'>Contact =
support.</span></a></span><o:p></o:p></p></td></tr></table><p =
class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr =
style=3D'height:7.5pt'><td style=3D'padding:0in 0in 0in =
0in;height:7.5pt'><p class=3DMsoNormal =
style=3D'mso-line-height-alt:7.5pt;mso-element:frame;mso-element-frame-hs=
pace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph=
;mso-element-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p></td></tr></table><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:11.5pt;font-family:"Arial","sans-serif";color:#666666'=
>&nbsp;</span><o:p></o:p></p><table class=3DMsoNormalTable border=3D0 =
cellpadding=3D0 width=3D525 style=3D'width:393.75pt'><tr><td =
style=3D'padding:0in 0in 0in 0in'><p class=3DMsoNormal =
style=3D'line-height:15.0pt;mso-element:frame;mso-element-frame-hspace:2.=
25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-el=
ement-anchor-horizontal:column;mso-height-rule:exactly'><span =
style=3D'font-size:9.0pt;font-family:"Arial","sans-serif";color:#A0A0A0'>=
IMPORTANT NOTICE: Please note that this WebEx service allows audio and =
other information sent during the session to be recorded, which may be =
discoverable in a legal matter. By joining this session, you =
automatically consent to such recordings. If you do not consent to being =
recorded, discuss your concerns with the host or do not join the =
session.</span><o:p></o:p></p></td></tr></table></td></tr></table></td></=
tr></table><p class=3DMsoNormal><span =
style=3D'color:black'>&nbsp;<o:p></o:p></span></p></div></div></blockquot=
e></div></body></html>
------=_NextPart_000_00BC_01D09B1A.E60C86E0--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt
Thread-Index: AdCbMalEMdiuxbSrQYqa3QTcSqQ5lgAD8UQAAAk5iQD//75NAA==
Date: Sun, 31 May 2015 00:59:15 +0000
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References: <008a01d09b31$bd030960$37091c20$@ndzh.com> <D18FCCC0.1F766%acee@cisco.com> <00bb01d09b3c$6d14ff20$473efd60$@ndzh.com>
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Cc: 'Alia Atlas' <akatlas@juniper.net>, 'Deborah Brungard' <dbrungard@att.com>
Subject: Re: [Idr] Idr interim on 6/1/2015 - 10:00am to 11:30am edt
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, Jeff Tantsura <jeff.tantsura@ericsson.com>, Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
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This begins a 2 week WG adoption call for draft-raszuk-wide-bgp-communities
and draft-raszuk-registered-wide-bgp-communities.   These drafts can be
found at: 

https://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communities/

http://datatracker.ietf.org/doc/draft-raszuk-registered-wide-bgp-communities
/

 

Authors (Robert Raszuk, Jeff Haas, Andrew Lange, Shane Amante, Bruno
Decraene, Paul Jakma, and Richard Steenbergen) should indicate whether they
know of any IPR.   Since this proposal relates to existing RFCs and IDR WG
document (draft-ietf-idr-as4octet-extcomm-generic-subtype-07),  We have
included a bit of history below.  At the 6/1/2015 interim (10:00 - 11:30am
EDT), there will be a short review of the technology and time to discuss the
draft with Robert Raszuk. 

 

Please discuss  

a)       If these drafts should be adopted in addition to
draft-ietf-idr-as4octet-extcomm-generic-subtype-07,

b)       whether the new flexible format is useful for BGP deployments, and

c)       Any technical issues on the draft. 

 

As always, indicate "support" or "no support" within the comment. 

 

Sue Hares and John Scudder 

 

=================

A bit of history: 

 

RFC 1997 defines the BGP Community attribute (except for 2 reserved ranges) 

as 4 octets [2 octets AS number, 2 octets local-defined value].  

RFC 4893 introduced 4 byte AS encoding, and suggested using

extended communities [RFC 4360] to encoding 4 octet AS numbers. 

 

RFC5668 defines a format for a four-octet AS specific extended

community with a designated type field, and defines two

sub-types: Four-octet specific Route Target extended community and

Four-octet specific Route Origin extended community.  

An IDR WG document: draft-ietf-idr-as4octet-extcomm-generic-subtype-07 

(https://tools.ietf.org/html/draft-ietf-idr-as4octet-extcomm-generic-subtype
-07)

specifies a generic sub-type for the four-octet AS specific extended
community. 

 

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    | 0x02 or 0x42  |     0x04      |           Global              |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |    Administrator              |    Local Administrator        |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
   Global Administrator sub-field: 4 octets
   This sub-field contains a four-octet Autonomous System number.
 
   Local Administrator sub-field: 2 octets
      This sub-field contains a value that can influence routing
      policies. This value has semantics that are of significance for
      the Autonomous System in the Global Administrator field.
 

[From draft-ietf-idr-as4octet-extcomm-generic-subtype-07]

 

Draft-raszuk-wide-bgp-communities suggests a new BGP Path Attribute, 

that provides more flexible encoding than these WG RFCs and draft. 

 

The wide BGP header includes a Container header and community.

The container header has: 

 

      0                   1                   2                   3

      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |             Type              |     Flags     |   Hop Count   |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |            Length             |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

      0                   1                   2                   3

      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |               Registered/Local Community Value                |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |                        Source AS Number                       |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |                       Context AS Number                       |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |            Wide Community Target(s) TLV (optional)            |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |        Wide Community Exclude Target(s) TLV (optional)        |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

     |          Wide Community Parameter(s) TLV (optional)           |

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

                    Figure 4: Wide BGP Community Type 1

 
 

 


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	{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>This =
begins a 2 week WG adoption call for draft-raszuk-wide-bgp-communities =
and draft-raszuk-registered-wide-bgp-communities. &nbsp;&nbsp;These =
drafts can be found at: <o:p></o:p></p><p class=3DMsoNormal><a =
href=3D"https://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communitie=
s/">https://datatracker.ietf.org/doc/draft-raszuk-wide-bgp-communities/</=
a><o:p></o:p></p><p class=3DMsoNormal><a =
href=3D"http://datatracker.ietf.org/doc/draft-raszuk-registered-wide-bgp-=
communities/">http://datatracker.ietf.org/doc/draft-raszuk-registered-wid=
e-bgp-communities/</a><o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Authors =
(Robert Raszuk, Jeff Haas, Andrew Lange, Shane Amante, Bruno Decraene, =
Paul Jakma, and Richard Steenbergen) should indicate whether they know =
of any IPR.&nbsp; &nbsp;Since this proposal relates to existing RFCs and =
IDR WG document =
(draft-ietf-idr-as4octet-extcomm-generic-subtype-07),&nbsp; We have =
included a bit of history below.&nbsp; At the 6/1/2015 interim (10:00 =
&#8211; 11:30am EDT), there will be a short review of the technology and =
time to discuss the draft with Robert Raszuk. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Please =
discuss &nbsp;<o:p></o:p></p><p class=3DMsoListParagraph =
style=3D'text-indent:-.25in;mso-list:l0 level1 lfo1'><![if =
!supportLists]><span style=3D'mso-list:Ignore'>a)<span =
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>&nbsp;If these drafts should be adopted in =
addition to =
draft-ietf-idr-as4octet-extcomm-generic-subtype-07,<o:p></o:p></p><p =
class=3DMsoListParagraph style=3D'text-indent:-.25in;mso-list:l0 level1 =
lfo1'><![if !supportLists]><span style=3D'mso-list:Ignore'>b)<span =
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>&nbsp;whether the new flexible format is useful =
for BGP deployments, and<o:p></o:p></p><p class=3DMsoListParagraph =
style=3D'text-indent:-.25in;mso-list:l0 level1 lfo1'><![if =
!supportLists]><span style=3D'mso-list:Ignore'>c)<span =
style=3D'font:7.0pt "Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>Any =
technical issues on the draft. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>As always, =
indicate &#8220;support&#8221; or &#8220;no support&#8221; within the =
comment. <o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Sue Hares and John Scudder <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<o:p=
></o:p></p><p class=3DMsoNormal>A bit of history: <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>RFC 1997 =
defines the BGP Community attribute (except for 2 reserved ranges) =
<o:p></o:p></p><p class=3DMsoNormal>as 4 octets [2 octets AS number, 2 =
octets local-defined value].&nbsp; <o:p></o:p></p><p =
class=3DMsoNormal>RFC 4893 introduced 4 byte AS encoding, and suggested =
using<o:p></o:p></p><p class=3DMsoNormal>extended communities [RFC 4360] =
to encoding 4 octet AS numbers. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>RFC5668 =
defines a format for a four-octet AS specific extended<o:p></o:p></p><p =
class=3DMsoNormal>community with a designated type field, and defines =
two<o:p></o:p></p><p class=3DMsoNormal>sub-types: Four-octet specific =
Route Target extended community and<o:p></o:p></p><p =
class=3DMsoNormal>Four-octet specific Route Origin extended =
community.&nbsp; <o:p></o:p></p><p class=3DMsoNormal>An IDR WG document: =
draft-ietf-idr-as4octet-extcomm-generic-subtype-07 <o:p></o:p></p><p =
class=3DMsoNormal>(<a =
href=3D"https://tools.ietf.org/html/draft-ietf-idr-as4octet-extcomm-gener=
ic-subtype-07">https://tools.ietf.org/html/draft-ietf-idr-as4octet-extcom=
m-generic-subtype-07</a>)<o:p></o:p></p><p class=3DMsoNormal>specifies a =
generic sub-type for the four-octet AS specific extended community. =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><pre =
style=3D'page-break-before:always'><span style=3D'font-size:9.0pt'> =
<span =
style=3D'color:black'>&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; =
1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
3<o:p></o:p></span></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp; &nbsp;&nbsp;0 1 2 3 4 5 6 7 =
8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 =
1<o:p></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp; =
&nbsp;&nbsp;+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp; &nbsp;&nbsp;| 0x02 or =
0x42&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; 0x04&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Global&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp; |<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp; =
&nbsp;&nbsp;+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp; =
&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp; =
Administrator&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp; Local =
Administrator&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp; =
&nbsp;&nbsp;+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'><o:p>&nbsp;</o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp;&nbsp; Global Administrator =
sub-field: 4 octets<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp;&nbsp; This sub-field =
contains a four-octet Autonomous System =
number.<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'><o:p>&nbsp;</o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp;&nbsp; Local Administrator =
sub-field: 2 octets<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
This sub-field contains a value that can influence =
routing<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
policies. This value has semantics that are of significance =
for<o:p></o:p></span></pre><pre style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the =
Autonomous System in the Global Administrator =
field.<o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:9.0pt;color:black'><o:p>&nbsp;</o:p></span></pre><p =
class=3DMsoNormal>[From =
draft-ietf-idr-as4octet-extcomm-generic-subtype-07]<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Draft-raszuk-wide-bgp-communities suggests a new BGP =
Path Attribute, <o:p></o:p></p><p class=3DMsoNormal>that provides more =
flexible encoding than these WG RFCs and draft. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>The wide BGP =
header includes a Container header and community.<o:p></o:p></p><p =
class=3DMsoNormal>The container header has: <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 =
8 9 0 1 2 3 4 5 6 7 8 9 0 1<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
 =
Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; Flags&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp; Hop Count&nbsp;&nbsp; |<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Length&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; |<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:9.0pt;font-family:"Courier =
New"'> <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp; =
1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 =
8 9 0 1 2 3 4 5 6 7 8 9 0 1<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp; Registered/Local Community =
Value&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Source AS =
Number&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Context AS =
Number&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Wide =
Community Target(s) TLV =
(optional)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; |<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Wide Community Exclude =
Target(s) TLV (optional)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Wide Community =
Parameter(s) TLV =
(optional)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
|<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp; =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<o:p></o=
:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Courier =
New"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Figure 4: Wide BGP =
Community Type 1<o:p></o:p></span></p><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:12.0pt;color:black'> <o:p></o:p></span></pre><pre =
style=3D'page-break-before:always'><span =
style=3D'font-size:12.0pt;color:black'>&nbsp;<o:p></o:p></span></pre><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
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This begins a 2 week WG adoption call for draft-litowski-idr-rtc-interas-01
(5/31 to 6/14/2015).   The authors (Stephane Litkowski, Jeff Haas, and Keyur
Patel) should indicate whether they know of any IPR on this draft. 

 

The draft can be found at:

http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/

 

Please discuss: 

a)      If this solution is necessary in deployments of BGP, and

b)      Technical merits or problems with the proposed draft

 

As always include "support" or "no support" within your comments.

 

Sue Hares and John Scudder 

IDR Co-chairs 

 

Background on draft

----------------------- 

RFC4684 defines procedures to exchange RT reachability info in order to
limit propagation of VPN NLRIs for both intra domain and inter domain
distributions.  Based on operational deployments, the current distribution
model defined in [RFC4684] may cause some issue in specific scenarios. This
document refines the route distribution rules for inter domain NLRIs in
order to address these specific scenarios.

 


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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>This =
begins a 2 week WG adoption call for draft-litowski-idr-rtc-interas-01 =
(5/31 to 6/14/2015). &nbsp;&nbsp;The authors (Stephane Litkowski, Jeff =
Haas, and Keyur Patel) should indicate whether they know of any IPR on =
this draft. <o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>The draft can be found at:<o:p></o:p></p><p =
class=3DMsoNormal><a =
href=3D"http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/"=
>http://datatracker.ietf.org/doc/draft-litkowski-idr-rtc-interas/</a><o:p=
></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Please discuss: <o:p></o:p></p><p =
class=3DMsoListParagraph style=3D'text-indent:-.25in;mso-list:l0 level1 =
lfo1'><![if !supportLists]><span style=3D'mso-list:Ignore'>a)<span =
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>If this solution is necessary in deployments of =
BGP, and<o:p></o:p></p><p class=3DMsoListParagraph =
style=3D'text-indent:-.25in;mso-list:l0 level1 lfo1'><![if =
!supportLists]><span style=3D'mso-list:Ignore'>b)<span =
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>Technical merits or problems with the proposed =
draft<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>As always include &#8220;support&#8221; or &#8220;no =
support&#8221; within your comments.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Sue Hares =
and John Scudder <o:p></o:p></p><p class=3DMsoNormal>IDR Co-chairs =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Background on draft<o:p></o:p></p><p =
class=3DMsoNormal>----------------------- <o:p></o:p></p><p =
class=3DMsoNormal>RFC4684 defines procedures to exchange RT reachability =
info in order to limit propagation of VPN NLRIs for both intra domain =
and inter domain distributions. &nbsp;Based on operational deployments, =
the current distribution model defined in [RFC4684] may cause some issue =
in specific scenarios. This document refines the route distribution =
rules for inter domain NLRIs in order to address these specific =
scenarios.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
------=_NextPart_000_0082_01D09BF6.47756380--


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Subject: [Idr] 2 week WG adoption call for draft-previdi-idr-bgpls-segment-routing-epe-03 (5/31 to 6/14)
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This begins a 2 week WG adoption call for
draft-previdi-idr-bgpls-segment-routing-epe-03.txt.  The authors (Stefano,
Clarence, Saikat, Keyur, Mach and Jie) should indicate if they know if any
IPR.  The draft can be found at: 

 

http://datatracker.ietf.org/doc/draft-previdi-idr-bgpls-segment-routing-epe/

 

In the discussion, please consider:

a)      Does this addition to BGP-LS for exporting BGP egress point
topologies provides useful information for BGP deployments in the internet, 

b)      Are there scaling issues in adding this information to BGP-LS, and

c)       The technical merits and issues with this proposal. 

 

Susan Hares and John Scudder 

 


------=_NextPart_000_009F_01D09BF9.43BDF970
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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>This =
begins a 2 week WG adoption call for =
draft-previdi-idr-bgpls-segment-routing-epe-03.txt.&nbsp; The authors =
(Stefano, Clarence, Saikat, Keyur, Mach and Jie) should indicate if they =
know if any IPR. &nbsp;The draft can be found at: <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><a =
href=3D"http://datatracker.ietf.org/doc/draft-previdi-idr-bgpls-segment-r=
outing-epe/">http://datatracker.ietf.org/doc/draft-previdi-idr-bgpls-segm=
ent-routing-epe/</a><o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>In the =
discussion, please consider:<o:p></o:p></p><p class=3DMsoListParagraph =
style=3D'margin-left:20.25pt;text-indent:-.25in;mso-list:l0 level1 =
lfo1'><![if !supportLists]><span style=3D'mso-list:Ignore'>a)<span =
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>Does this addition to BGP-LS for exporting BGP =
egress point topologies provides useful information for BGP deployments =
in the internet, <o:p></o:p></p><p class=3DMsoListParagraph =
style=3D'margin-left:20.25pt;text-indent:-.25in;mso-list:l0 level1 =
lfo1'><![if !supportLists]><span style=3D'mso-list:Ignore'>b)<span =
style=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>Are there scaling issues in adding this =
information to BGP-LS, and<o:p></o:p></p><p class=3DMsoListParagraph =
style=3D'margin-left:20.25pt;text-indent:-.25in;mso-list:l0 level1 =
lfo1'><![if !supportLists]><span style=3D'mso-list:Ignore'>c)<span =
style=3D'font:7.0pt "Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>The =
technical merits and issues with this proposal. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Courier New";color:black'>Susan =
Hares and John Scudder </span><o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
------=_NextPart_000_009F_01D09BF9.43BDF970--


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Subject: [Idr] FW: New Version Notification for draft-keyupate-idr-i2rs-bgp-usecases-00.txt
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This draft describes the use cases for BGP I2RS interface, and discusses =
the requirements for the BGP I2RS Yang module that come from these use =
cases.  This draft will be presented at the IDR interim on 6/1/2015.   =
The authors would appreciate any feedback on these use cases.=20

Sue Hares, Keyur Patel, and Russ White


-----Original Message-----
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Sent: Monday, June 01, 2015 1:48 AM
To: Susan Hares; Susan Hares; Keyur Patel; Keyur Patel; Russ White; Russ =
White
Subject: New Version Notification for =
draft-keyupate-idr-i2rs-bgp-usecases-00.txt


A new version of I-D, draft-keyupate-idr-i2rs-bgp-usecases-00.txt
has been successfully submitted by Susan Hares and posted to the IETF =
repository.

Name:		draft-keyupate-idr-i2rs-bgp-usecases
Revision:	00
Title:		Use Cases for an Interface to BGP Protocol
Document date:	2015-05-31
Group:		Individual Submission
Pages:		21
URL:            =
https://www.ietf.org/internet-drafts/draft-keyupate-idr-i2rs-bgp-usecases=
-00.txt
Status:         =
https://datatracker.ietf.org/doc/draft-keyupate-idr-i2rs-bgp-usecases/
Htmlized:       =
https://tools.ietf.org/html/draft-keyupate-idr-i2rs-bgp-usecases-00


Abstract:
   A network routing protocol like BGP is typically configured and
   analyzed through some form of Command Line Interface (CLI) or
   NETCONF.  These interactions to control BGP and diagnose its
   operation encompass: configuration of protocol parameters, display of
   protocol data, setting of certain protocol state and debugging of the
   protocol.

   Interface to the Routing System's (I2RS) Programmatic interfaces
   provides an alternate way to control and diagnose the operation of
   the BGP protocol.  I2RS may be used for the configuration,
   manipulation, analyzing or collecting the protocol data.  This
   document describes set of use cases for which I2RS can be used for
   BGP protocol.  It is intended to provide a base for the solution
   draft describing a set of interfaces to the BGP protocol.

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        =20


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