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From: "Yue Wang" <yue.l.wang@gmail.com>
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Subject: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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This document describes AOSPF (Anycast Extensions to OSPFv3),
   a routing protocol which extends OSPFv3 to support anycast, which
   we implemented and tested successfully in our IPv6 test bed. And
   the performance analysis shows the overhead of AOSPF is low.

http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt


-- 
regards,
wang yue

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On Nov 30, 2006, at 9:43 PM, Curtis Villamizar wrote:

>
> In message <133D69D4-43D7-46D0-88E5-80FD8CB25CCF@cisco.com>
> JP Vasseur writes:
>>
>> Hi Curtis,
>>
>> On Nov 30, 2006, at 8:48 PM, Curtis Villamizar wrote:
>>
>>>
>>> In message <4354A088-B93C-457F-93FD-55B8EB4A861A@cisco.com>
>>> JP Vasseur writes:
>>>>
>>>> Other attributes such as affinity should be used to not allows 0-bw
>>>> TE LSP to traverse a specific link. This TLV is only used to report
>>>> the number of such TE LSPs traversing the link.
>>>>
>>>> Thanks.
>>>>
>>>> JP.
>>>
>>>
>>> The provider already has the necessary tools that can be used to
>>> accomplish this.  If a general purpose tool (attributes and
>>> affinities) is available which accomplishes something a special
>>> purpose tool to accomplish the same thing is not needed.
>>>
>>> Such a tool would only be useful if the administration of the MPLS
>>> midpoint (where the attribute is set) had no control over the
>>> administration of the MPLS ingress or a border that is doing route
>>> computation (where the affinity is set).  I don't see any  
>>> anticipated
>>> real world deployment that would benefit from this.  If you do, then
>>> please explain the deployment scenario.
>>>
>>
>> not sure to see your point here ... I was mentioning that the aim of
>> this TLV was not to avoid some links.
>> Looks like you're saying the same thing.
>>
>> JP.
>>
>>> Curtis
>
>
> My point was regarding a mention in that conversation that the value
> of zero might mean no zero-BW LSPs have been set up or none are
> allowed.  Looks like I cut the wrong paragraph out of the
> conversation.
>
> The existing link attributes and affinity are sufficient to indicate
> the condition that no zero-BW LSPs are allowed if the administration
> of that network decides to use an attribute for that purpose.
>
> I'm agreeing with you.

great, thanks.

Cheers.

JP.

>
> Curtis

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From ospf-bounces@ietf.org Fri Dec 01 08:38:47 2006
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Hi Acee,

See below.


At 04:47 PM 11/28/2006, Acee Lindem wrote:

>Hi Lou,
>Lou Berger wrote:
>>Acee,
>>         See below.
>>
>>At 06:37 PM 11/20/2006, Acee Lindem wrote:
>>
>>>Hi Lou,
>>>See inline.
>>>
>>>
>>>Lou Berger wrote:
>>>>Acee,
>>>>         See responses in-line below.
>>>>
>>>>Should the corrected version go in as draft-berger or draft-ietf?
>>>>
>>>>Lou
>>>>
>>>>At 07:03 PM 11/13/2006, Acee Lindem wrote:
>>[...]




>>>>>Section 3.1 - Type 9  LSA - "keep" rather than "keepk".
>>>>
>>>>yes.  Also I added the following to the beginning of the section:
>>>>  Section 13 of [OSPF] describes the OSPF flooding procedure.
>>>>  Those procedures MUST be followed as defined except where
>>>>  modified in this section.
>>>>
>>>>>I believe we
>>>>>                    should discard a link-local LSA received 
>>>>> from a neighbor not
>>>>>                    on the interface (text similiar to type 11).
>>>>
>>>>okay, updated as follows:
>>>>   o If the Opaque LSA is type 9 (the flooding scope is link-local)
>>>>     and the interface that the LSA was received on is not the same
>>>>     as the target interface (e.g., the interface associated with a
>>>>     particular target neighbor), the Opaque LSA SHOULD be discarded
>>>>     and not acknowledged, and MUST NOT be flooded out that interface
>>>>     (or to that neighbor).  An implementation SHOULD keep track of
>>>>     the IP interface associated with each Opaque LSA having a
>>>>     link-local flooding scope.
>>>I guess I think that if you discard an LSA, it is implied that you won't
>>>reflood it.
>>
>>it does say "and MUST NOT be flooded".  I'm open to alternate wording.
>In every other instance where an LSA is discarded in RFC 2328 we don't
>explicitly state that we don't reflood them. In other words, why would
>anybody get the misconcept we'd ever reflood anything that was discarded.

ahh, I thought you *wanted* the explicit text.  The primary reason 
for the seemingly redundant directives is that's how it was done in 
2370 (see type 11).  Also, for type 9 and 10, one is a SHOULD 
(ignore) and the other is a MUST NOT(flood).  The ignore part is IMO 
implicit in OSPF/2370, but isn't explicit so I've put it as a 
SHOULD.  I have no issue changing this a MUST.

[...]

>>>>>5.1 Inter-Area Considerations
>>>>>
>>>>>......
>>>>>
>>>>>
>>>>>Section 5.1
>>>>>
>>>>>   Type-9 opaque LSAs and type-10 opaque LSAs do not have this problem
>>>>>   as a receiving router can detect an a loss of reachability 
>>>>> through the intra-area
>>>>>   SPF calculation.
>>>>>
>>>>>Section 5.1
>>>>>
>>>>>   To enable OSPF routers in remote areas to check availability of the
>>>>>   originator of link-state type 11 opaque LSAs, the orignators of
>>>>>    type-11 opaque LSAs are considered Autonomous System Border
>>>>>    Routers (ASBRs) and will advertise themselves as such.
>>>>
>>>>
>>>>
>>>>>
>>>>>Section 5.1 - Remove "It is important to note that this solution 
>>>>>MUST NOT ..."
>>>>>This is redundant.
>>>>
>>>>which part is redundant, just the sentence you are asking to be 
>>>>removed?  I agree that it is redundant with 2328, but I thin 
>>>>mentioning it is still useful.  Will rephrase to remove directive.
>>>This part of the specification doesn't modify stub area behavior.
>>>Here, we are talking about validating AS scoped opaque LSA.
>>>I guess you could say, "Note that AS scoped opaque LSA
>>>validation is not applicable to stub and NSSA areas since LSAs
>>>with AS scope are not flooded into these areas types." However,
>>>I don't see it as necessary.
>>
>>here's what I have now: "It is important to note that per
>>[OSPF] this solution does not apply to OSPF stub areas or NSSAs as
>>neither type-11 LSAs are flooded nor are type-4 LSAs originated into
>>such areas."
>>
>>As you mentioned above, it is worth explicitly stating things sometimes.
>Okay - I'll concede though I don't think it is necessary. Can we
>call say "AS scoped opaque LSAs" rather than type-11s.

sure.

>  Also, do
>we have to add the detail about the ASBR-summary-LSAs (as they
>are referred to RFC 2328).

This is just an informative statement on an issue that was previously 
missed.  I'd prefer to keep it.  That said, if you really feel 
strongly about it, we can remove the whole thing as it's just informative.



>>>>>Remove numbered items (1) and (2), these actions ARE NOT new to
>>>>>opaque LSAs. Make (3) a separate paragraph rather than numbered
>>>>>item.
>>>>
>>>>But inclusion of type-11 originate routers as ASBR is new.  Will 
>>>>rephrase to make clear that existing ospf requirements apply.
>>>>
>>>>How about:
>>>>The procedures related to inter-area opaque LSAs are as follows:
>>>>
>>>>(1) An OSPF router that is configured to originate AS-scope opaque
>>>>     LSAs advertise themselves as ASBRs and MUST follow the related
>>>>     requirements related to setting of the  Options field E-bit in
>>>>     OSPF Hello packets and LSA headers as specified in [OSPF].
>>>>
>>>>(2) When ....
>>>I don't think these points need to be restated even if they reference
>>>RFC 2328. Opaque LSAs don't modify these conditions. Hence,
>>>I don't see them to be required any more than stating the version field
>>>the OSPF packet header should be set to 2.
>>
>>huh? opaque LSAs aren't present in 2328 and the specification of 
>>E-bit setting/handling in 2328 is largely relative to AS-external-LSAs.
>The E options bit must be set in hellos for any regular (not stub or 
>NSSA) area
>independent of any opaque support. Opaque LSAs don't change this at all.

yes, but the use of the E-bit due to Opaque LSAs is novel/unique to 
this document.
[...]

Much thanks,
Lou



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Hi Lou,
Since no one offered objection - lets make this a WG document when
refreshed. See below:

Lou Berger wrote:
> Hi Acee,
>
> See below.
>
>
> At 04:47 PM 11/28/2006, Acee Lindem wrote:
>
>> Hi Lou,
>> Lou Berger wrote:
>>> Acee,
>>>         See below.
>>>
>>> At 06:37 PM 11/20/2006, Acee Lindem wrote:
>>>
>>>> Hi Lou,
>>>> See inline.
>>>>
>>>>
>>>> Lou Berger wrote:
>>>>> Acee,
>>>>>         See responses in-line below.
>>>>>
>>>>> Should the corrected version go in as draft-berger or draft-ietf?
>>>>>
>>>>> Lou
>>>>>
>>>>> At 07:03 PM 11/13/2006, Acee Lindem wrote:
>>> [...]
>
>
>
>
>>>>>> Section 3.1 - Type 9  LSA - "keep" rather than "keepk".
>>>>>
>>>>> yes.  Also I added the following to the beginning of the section:
>>>>>  Section 13 of [OSPF] describes the OSPF flooding procedure.
>>>>>  Those procedures MUST be followed as defined except where
>>>>>  modified in this section.
>>>>>
>>>>>> I believe we
>>>>>>                    should discard a link-local LSA received from 
>>>>>> a neighbor not
>>>>>>                    on the interface (text similiar to type 11).
>>>>>
>>>>> okay, updated as follows:
>>>>>   o If the Opaque LSA is type 9 (the flooding scope is link-local)
>>>>>     and the interface that the LSA was received on is not the same
>>>>>     as the target interface (e.g., the interface associated with a
>>>>>     particular target neighbor), the Opaque LSA SHOULD be discarded
>>>>>     and not acknowledged, and MUST NOT be flooded out that interface
>>>>>     (or to that neighbor).  An implementation SHOULD keep track of
>>>>>     the IP interface associated with each Opaque LSA having a
>>>>>     link-local flooding scope.
>>>> I guess I think that if you discard an LSA, it is implied that you 
>>>> won't
>>>> reflood it.
>>>
>>> it does say "and MUST NOT be flooded".  I'm open to alternate wording.
>> In every other instance where an LSA is discarded in RFC 2328 we don't
>> explicitly state that we don't reflood them. In other words, why would
>> anybody get the misconcept we'd ever reflood anything that was 
>> discarded.
>
> ahh, I thought you *wanted* the explicit text.  The primary reason for 
> the seemingly redundant directives is that's how it was done in 2370 
> (see type 11).  Also, for type 9 and 10, one is a SHOULD (ignore) and 
> the other is a MUST NOT(flood).  The ignore part is IMO implicit in 
> OSPF/2370, but isn't explicit so I've put it as a SHOULD.  I have no 
> issue changing this a MUST.
I think saying the LSAs are discarded is enough.


>
> [...]
>
>>>>>> 5.1 Inter-Area Considerations
>>>>>>
>>>>>> ......
>>>>>>
>>>>>>
>>>>>> Section 5.1
>>>>>>
>>>>>>   Type-9 opaque LSAs and type-10 opaque LSAs do not have this 
>>>>>> problem
>>>>>>   as a receiving router can detect an a loss of reachability 
>>>>>> through the intra-area
>>>>>>   SPF calculation.
>>>>>>
>>>>>> Section 5.1
>>>>>>
>>>>>>   To enable OSPF routers in remote areas to check availability of 
>>>>>> the
>>>>>>   originator of link-state type 11 opaque LSAs, the orignators of
>>>>>>    type-11 opaque LSAs are considered Autonomous System Border
>>>>>>    Routers (ASBRs) and will advertise themselves as such.
>>>>>
>>>>>
>>>>>
>>>>>>
>>>>>> Section 5.1 - Remove "It is important to note that this solution 
>>>>>> MUST NOT ..."
>>>>>> This is redundant.
>>>>>
>>>>> which part is redundant, just the sentence you are asking to be 
>>>>> removed?  I agree that it is redundant with 2328, but I thin 
>>>>> mentioning it is still useful.  Will rephrase to remove directive.
>>>> This part of the specification doesn't modify stub area behavior.
>>>> Here, we are talking about validating AS scoped opaque LSA.
>>>> I guess you could say, "Note that AS scoped opaque LSA
>>>> validation is not applicable to stub and NSSA areas since LSAs
>>>> with AS scope are not flooded into these areas types." However,
>>>> I don't see it as necessary.
>>>
>>> here's what I have now: "It is important to note that per
>>> [OSPF] this solution does not apply to OSPF stub areas or NSSAs as
>>> neither type-11 LSAs are flooded nor are type-4 LSAs originated into
>>> such areas."
>>>
>>> As you mentioned above, it is worth explicitly stating things 
>>> sometimes.
>> Okay - I'll concede though I don't think it is necessary. Can we
>> call say "AS scoped opaque LSAs" rather than type-11s.
>
> sure.
Great.
>
>>  Also, do
>> we have to add the detail about the ASBR-summary-LSAs (as they
>> are referred to RFC 2328).
>
> This is just an informative statement on an issue that was previously 
> missed.  I'd prefer to keep it.  That said, if you really feel 
> strongly about it, we can remove the whole thing as it's just 
> informative.
Ok.
>
>
>
>>>>>> Remove numbered items (1) and (2), these actions ARE NOT new to
>>>>>> opaque LSAs. Make (3) a separate paragraph rather than numbered
>>>>>> item.
>>>>>
>>>>> But inclusion of type-11 originate routers as ASBR is new.  Will 
>>>>> rephrase to make clear that existing ospf requirements apply.
>>>>>
>>>>> How about:
>>>>> The procedures related to inter-area opaque LSAs are as follows:
>>>>>
>>>>> (1) An OSPF router that is configured to originate AS-scope opaque
>>>>>     LSAs advertise themselves as ASBRs and MUST follow the related
>>>>>     requirements related to setting of the  Options field E-bit in
>>>>>     OSPF Hello packets and LSA headers as specified in [OSPF].
>>>>>
>>>>> (2) When ....
>>>> I don't think these points need to be restated even if they reference
>>>> RFC 2328. Opaque LSAs don't modify these conditions. Hence,
>>>> I don't see them to be required any more than stating the version 
>>>> field
>>>> the OSPF packet header should be set to 2.
>>>
>>> huh? opaque LSAs aren't present in 2328 and the specification of 
>>> E-bit setting/handling in 2328 is largely relative to AS-external-LSAs.
>> The E options bit must be set in hellos for any regular (not stub or 
>> NSSA) area
>> independent of any opaque support. Opaque LSAs don't change this at all.
>
> yes, but the use of the E-bit due to Opaque LSAs is novel/unique to 
> this document.
> [...]
Not really,  the setting of the E-bit in the Hello packet Options is solely
dependent on the area type. There is nothing about this specific to 
opaque LSAs.

Thanks,
Acee

>
> Much thanks,
> Lou
>

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Acee,
         see below.

At 10:21 AM 12/1/2006, Acee Lindem wrote:

>Hi Lou,
>Since no one offered objection - lets make this a WG document when
>refreshed. See below:

will do as soon as we close on items in this thread. (which I think 
we'll do as soon as you respond to this message...)

>Lou Berger wrote:
>>Hi Acee,
>>
>>See below.
>>
>>
>>At 04:47 PM 11/28/2006, Acee Lindem wrote:
>>
>>>Hi Lou,
>>>Lou Berger wrote:
>>>>Acee,
>>>>         See below.
>>>>
>>>>At 06:37 PM 11/20/2006, Acee Lindem wrote:
>>>>
>>>>>Hi Lou,
>>>>>See inline.
>>>>>
>>>>>
>>>>>Lou Berger wrote:
>>>>>>Acee,
>>>>>>         See responses in-line below.
>>>>>>
>>>>>>Should the corrected version go in as draft-berger or draft-ietf?
>>>>>>
>>>>>>Lou
>>>>>>
>>>>>>At 07:03 PM 11/13/2006, Acee Lindem wrote:
>>>>[...]
>>
>>
>>
>>
>>>>>>>Section 3.1 - Type 9  LSA - "keep" rather than "keepk".
>>>>>>
>>>>>>yes.  Also I added the following to the beginning of the section:
>>>>>>  Section 13 of [OSPF] describes the OSPF flooding procedure.
>>>>>>  Those procedures MUST be followed as defined except where
>>>>>>  modified in this section.
>>>>>>
>>>>>>>I believe we
>>>>>>>                    should discard a link-local LSA received 
>>>>>>> from a neighbor not
>>>>>>>                    on the interface (text similiar to type 11).
>>>>>>
>>>>>>okay, updated as follows:
>>>>>>   o If the Opaque LSA is type 9 (the flooding scope is link-local)
>>>>>>     and the interface that the LSA was received on is not the same
>>>>>>     as the target interface (e.g., the interface associated with a
>>>>>>     particular target neighbor), the Opaque LSA SHOULD be discarded
>>>>>>     and not acknowledged, and MUST NOT be flooded out that interface
>>>>>>     (or to that neighbor).  An implementation SHOULD keep track of
>>>>>>     the IP interface associated with each Opaque LSA having a
>>>>>>     link-local flooding scope.
>>>>>I guess I think that if you discard an LSA, it is implied that you won't
>>>>>reflood it.
>>>>
>>>>it does say "and MUST NOT be flooded".  I'm open to alternate wording.
>>>In every other instance where an LSA is discarded in RFC 2328 we don't
>>>explicitly state that we don't reflood them. In other words, why would
>>>anybody get the misconcept we'd ever reflood anything that was discarded.
>>
>>ahh, I thought you *wanted* the explicit text.  The primary reason 
>>for the seemingly redundant directives is that's how it was done in 
>>2370 (see type 11).  Also, for type 9 and 10, one is a SHOULD 
>>(ignore) and the other is a MUST NOT(flood).  The ignore part is 
>>IMO implicit in OSPF/2370, but isn't explicit so I've put it as a 
>>SHOULD.  I have no issue changing this a MUST.
>I think saying the LSAs are discarded is enough.

okay, changed to MUST discard.
[...]


>>>>>>>Remove numbered items (1) and (2), these actions ARE NOT new to
>>>>>>>opaque LSAs. Make (3) a separate paragraph rather than numbered
>>>>>>>item.
>>>>>>
>>>>>>But inclusion of type-11 originate routers as ASBR is 
>>>>>>new.  Will rephrase to make clear that existing ospf requirements apply.
>>>>>>
>>>>>>How about:
>>>>>>The procedures related to inter-area opaque LSAs are as follows:
>>>>>>
>>>>>>(1) An OSPF router that is configured to originate AS-scope opaque
>>>>>>     LSAs advertise themselves as ASBRs and MUST follow the related
>>>>>>     requirements related to setting of the  Options field E-bit in
>>>>>>     OSPF Hello packets and LSA headers as specified in [OSPF].
>>>>>>
>>>>>>(2) When ....
>>>>>I don't think these points need to be restated even if they reference
>>>>>RFC 2328. Opaque LSAs don't modify these conditions. Hence,
>>>>>I don't see them to be required any more than stating the version field
>>>>>the OSPF packet header should be set to 2.
>>>>
>>>>huh? opaque LSAs aren't present in 2328 and the specification of 
>>>>E-bit setting/handling in 2328 is largely relative to AS-external-LSAs.
>>>The E options bit must be set in hellos for any regular (not stub 
>>>or NSSA) area
>>>independent of any opaque support. Opaque LSAs don't change this at all.
>>
>>yes, but the use of the E-bit due to Opaque LSAs is novel/unique to 
>>this document.
>>[...]
>Not really,  the setting of the E-bit in the Hello packet Options is solely
>dependent on the area type. There is nothing about this specific to 
>opaque LSAs.

okay, will remove the reference to hellos from (1).

Thanks,
Lou


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Subject: [OSPF] Re: Comments on draft-berger-ospf-rfc2370bis-00.txt
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Errors-To: ospf-bounces@ietf.org

Hi Lou,

Lou Berger wrote:
> Acee,
>         see below.
>
> At 10:21 AM 12/1/2006, Acee Lindem wrote:
>
>> Hi Lou,
>> Since no one offered objection - lets make this a WG document when
>> refreshed. See below:
>
> will do as soon as we close on items in this thread. (which I think 
> we'll do as soon as you respond to this message...)
>
>> Lou Berger wrote:
>>> Hi Acee,
>>>
>>> See below.
>>>
>>>
>>> At 04:47 PM 11/28/2006, Acee Lindem wrote:
>>>
>>>> Hi Lou,
>>>> Lou Berger wrote:
>>>>> Acee,
>>>>>         See below.
>>>>>
>>>>> At 06:37 PM 11/20/2006, Acee Lindem wrote:
>>>>>
>>>>>> Hi Lou,
>>>>>> See inline.
>>>>>>
>>>>>>
>>>>>> Lou Berger wrote:
>>>>>>> Acee,
>>>>>>>         See responses in-line below.
>>>>>>>
>>>>>>> Should the corrected version go in as draft-berger or draft-ietf?
>>>>>>>
>>>>>>> Lou
>>>>>>>
>>>>>>> At 07:03 PM 11/13/2006, Acee Lindem wrote:
>>>>> [...]
>>>
>>>
>>>
>>>
>>>>>>>> Section 3.1 - Type 9  LSA - "keep" rather than "keepk".
>>>>>>>
>>>>>>> yes.  Also I added the following to the beginning of the section:
>>>>>>>  Section 13 of [OSPF] describes the OSPF flooding procedure.
>>>>>>>  Those procedures MUST be followed as defined except where
>>>>>>>  modified in this section.
>>>>>>>
>>>>>>>> I believe we
>>>>>>>>                    should discard a link-local LSA received 
>>>>>>>> from a neighbor not
>>>>>>>>                    on the interface (text similiar to type 11).
>>>>>>>
>>>>>>> okay, updated as follows:
>>>>>>>   o If the Opaque LSA is type 9 (the flooding scope is link-local)
>>>>>>>     and the interface that the LSA was received on is not the same
>>>>>>>     as the target interface (e.g., the interface associated with a
>>>>>>>     particular target neighbor), the Opaque LSA SHOULD be discarded
>>>>>>>     and not acknowledged, and MUST NOT be flooded out that 
>>>>>>> interface
>>>>>>>     (or to that neighbor).  An implementation SHOULD keep track of
>>>>>>>     the IP interface associated with each Opaque LSA having a
>>>>>>>     link-local flooding scope.
>>>>>> I guess I think that if you discard an LSA, it is implied that 
>>>>>> you won't
>>>>>> reflood it.
>>>>>
>>>>> it does say "and MUST NOT be flooded".  I'm open to alternate 
>>>>> wording.
>>>> In every other instance where an LSA is discarded in RFC 2328 we don't
>>>> explicitly state that we don't reflood them. In other words, why would
>>>> anybody get the misconcept we'd ever reflood anything that was 
>>>> discarded.
>>>
>>> ahh, I thought you *wanted* the explicit text.  The primary reason 
>>> for the seemingly redundant directives is that's how it was done in 
>>> 2370 (see type 11).  Also, for type 9 and 10, one is a SHOULD 
>>> (ignore) and the other is a MUST NOT(flood).  The ignore part is IMO 
>>> implicit in OSPF/2370, but isn't explicit so I've put it as a 
>>> SHOULD.  I have no issue changing this a MUST.
>> I think saying the LSAs are discarded is enough.
>
> okay, changed to MUST discard.
> [...]
Ok - sounds good.
>
>
>>>>>>>> Remove numbered items (1) and (2), these actions ARE NOT new to
>>>>>>>> opaque LSAs. Make (3) a separate paragraph rather than numbered
>>>>>>>> item.
>>>>>>>
>>>>>>> But inclusion of type-11 originate routers as ASBR is new.  Will 
>>>>>>> rephrase to make clear that existing ospf requirements apply.
>>>>>>>
>>>>>>> How about:
>>>>>>> The procedures related to inter-area opaque LSAs are as follows:
>>>>>>>
>>>>>>> (1) An OSPF router that is configured to originate AS-scope opaque
>>>>>>>     LSAs advertise themselves as ASBRs and MUST follow the related
>>>>>>>     requirements related to setting of the  Options field E-bit in
>>>>>>>     OSPF Hello packets and LSA headers as specified in [OSPF].
>>>>>>>
>>>>>>> (2) When ....
>>>>>> I don't think these points need to be restated even if they 
>>>>>> reference
>>>>>> RFC 2328. Opaque LSAs don't modify these conditions. Hence,
>>>>>> I don't see them to be required any more than stating the version 
>>>>>> field
>>>>>> the OSPF packet header should be set to 2.
>>>>>
>>>>> huh? opaque LSAs aren't present in 2328 and the specification of 
>>>>> E-bit setting/handling in 2328 is largely relative to 
>>>>> AS-external-LSAs.
>>>> The E options bit must be set in hellos for any regular (not stub 
>>>> or NSSA) area
>>>> independent of any opaque support. Opaque LSAs don't change this at 
>>>> all.
>>>
>>> yes, but the use of the E-bit due to Opaque LSAs is novel/unique to 
>>> this document.
>>> [...]
>> Not really,  the setting of the E-bit in the Hello packet Options is 
>> solely
>> dependent on the area type. There is nothing about this specific to 
>> opaque LSAs.
>
> okay, will remove the reference to hellos from (1).

Great - think we are in sync.

Thanks,
Acee
>
> Thanks,
> Lou
>

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Based on the discussion on the list and in Montreal and San Diego, I 
believe that
the consensus is to make this a WG document. With the next revision, it 
will become
one.

Thanks,
Acee

_______________________________________________
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https://www1.ietf.org/mailman/listinfo/ospf



From ospf-bounces@ietf.org Mon Dec 04 16:22:17 2006
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Subject: [OSPF] OSPF Version 2 MIB for Multi-Topology (MT) Routing -
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We decided to do this as a separate piece of work as to not delay the
update of the OSPFv2 MIB until OSPFv2 MTR had been published. We've
accepted OSPFv2 MTR as an OSPF WG draft. It is natural that we
would accept the OSPFv2 MTR MIB as well. This draft was presented in 
Montreal
and there was no opposition to this line of reasoning in San Diego. 
Hence, I see
no reason not to make it a WG document and believe this to be the 
consensus of
the WG. Please register your opposition by the end of the week (Dec 8th) 
if you
have any.

Thanks,
Acee

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https://www1.ietf.org/mailman/listinfo/ospf



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This draft was presented in Montreal and was refreshed prior to the San 
Diego IETF.
It proposes two change to RFC 3623.

   1) Helper termination criteria between strict-LSA checking and no LSA 
checking.
   2) Explicit helper notification that graceful restart is terminated 
(other than flooding an
       inconsistent LSA).

Right now there isn't consensus as to whether or not there are 
requirements for these
enhancements.  Since in this E-mail I'm speaking as WG Co-chair, I'll 
comment as a
WG member and RFC 3623 co-author in a separate E-mail.

Please read the refresh version of the draft and comment.

Thanks,
Acee

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From: Acee Lindem <acee@cisco.com>
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Subject: Re: [OSPF] OSPF GR query
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Hi Sujay,
sujay gupta wrote:
> Hi Acee,
> A late mail on this thread.
>
> given the scenario if R3-R1 is a stub area
> and the incoming LSA is a type-5, even with strict LSA
> checking enabled will not exit Helper mode.
I'm not sure what the network picture looks like but a helper
router can always terminate graceful restart by flooding an
inconsistent router or network LSA to the restarting  router.

Thanks,
Acee

>
> It can be a nice idea to give some explicit notification
> by R2 to R1 about exiting helper mode.
>
> As rightly pointed by you the above conditions and more
> has been causing some confusion for some time.
> Our proposal ;
> http://tools.ietf.org/wg/ospf/draft-holla-ospf-update-graceful-restart-02.txt 
>
> hopefully resolves this.
> Could we add this as an addendum/reference to RFC3623?, purely an
> add-on.
> Best Regards.
> Sujay
>
> On 10/5/06, Acee Lindem <acee@cisco.com> wrote:
>>
>> Khan Amir-G20247 wrote:
>> > Hi Ace
>> >
>> > But reaching to a FULL state is not one of the conditions for 
>> Helper to
>> > quit Helper mode, I guess a Helper who has reached
>> > to FULL state with its restarting router will wait for Grace LSAs 
>> to be
>> > flushed or GR timeout to happen for exiting Helper mode.
>> >
>> No - The presumption is when you reach FULL state you don't need to 
>> "quit"
>> helping - you have "finished" helping. Over the years, there have been a
>> few situations that could have been better documented - however, this
>> never
>> caused any confusion in the past.
>>
>> Thanks,
>> Acee
>>
>> > Regards
>> > Aamir
>> >
>> >
>> > -----Original Message-----
>> > From: Acee Lindem [mailto:acee@cisco.com]
>> > Sent: Thursday, October 05, 2006 8:00 PM
>> > To: Khan Amir-G20247
>> > Cc: ospf@ietf.org
>> > Subject: Re: [OSPF] OSPF GR query
>> >
>> > Hello Amir,
>> >
>> > Khan Amir-G20247 wrote:
>> >
>> >>
>> >>
>> >> Hi
>> >>
>> >> I have query related to OSPF Graceful Restart.
>> >>
>> >> Consider this scenario:
>> >>
>> >>
>> >>
>> >> - Three Routers R1, R2 and R3 connected via Broadcast networks.
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> - Where R1 is a DR on both the segments, where as R2 and R3 are in
>> >> DR-other
>> >> - Now R1 wants to perform GR, R2 and R3 agrees to be its Helpers.
>> >> - Now after restart R1 will try to form adjacency with both R2 and 
>> R3.
>> >>
>> >
>> >
>> >> - Lets say R1 and R2 had become FULL, while R1 and R3 had reached
>> >> Exstart state.   Now at this time R2 receives an LSA (any type 1-5 
>> and
>> >> 7, from some other router existing in the same area, not pictured
>> >> here) which he needs to flood to R1.
>> >> - This will force R2 to quit Helper Status, while R1 and R3 are still
>> >> in process of forming adjacency.
>> >>
>> >>
>> > Since he has reached FULL state, he is no longer a helper router.
>> >
>> >> Considering above scenario, my doubts are:
>> >>
>> >> - How will R1 come to know that its Helper R2 has quit?
>> >>
>> >>
>> > Since he has reached FULL state, he is no longer a helper router.
>> >
>> >> - Will the adjacency between R1 and R2 needs to go down, as R2 quits
>> >> helper mode?
>> >>
>> >>
>> > No
>> >
>> >> - Will this effect the adjacency formation of R1 and R3?
>> >>
>> >>
>> > No. R3 MAY exit helper status and re-originate a new router LSA if he
>> > receives the new LSA before reaching FULL state with R1 AND he is has
>> > strict-LSA-checking configured.
>> >
>> > Hope this helps,
>> > Acee
>> >
>> >>
>> >>
>> >> Regards
>> >> Aamir
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> 
>> ----------------------------------------------------------------------
>> >> --
>> >>
>> >> _______________________________________________
>> >> OSPF mailing list
>> >> OSPF@ietf.org
>> >> https://www1.ietf.org/mailman/listinfo/ospf
>> >>
>> >>
>> >
>> >
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ospf
>>
>

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We did a WG last call on the 11 version of this document back in October.
I've updated it with some comments I received offline as well as assuring I
had addressed issues with other drafts being reviewed by the IESG. Please
look at the 12 and 13 changes (they are described in Appendix E.12 and E.13.
If there are no further comments, I will send it to AD for evaluation on 
December 13th.
Thanks,
Acee

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Date: Wed, 06 Dec 2006 09:59:47 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] OSPF GR query
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hi acee,

Helper terminating graceful restart by flooding an inconsistent router 
or network LSA
can cause increased downtime.

It is exactly good IMHO to have explicit notification back to re-starter 
first.

The idea is with due respect to the critical interdependencies on OSPF 
routing on other
protocols, and how long we might allow and watch to flap, wrench and 
wrestle all the signalling, routing,
and other data protocols which depend on OSPF in the event of  a helper 
not co-operating.

This idea is above all the reason of whether to include this mechanism 
in grat(c)eful re-start.

It rather completes a old gr specification    ;-).

Thanks,
Abhay


Acee Lindem wrote:
> Hi Sujay,
> sujay gupta wrote:
>> Hi Acee,
>> A late mail on this thread.
>>
>> given the scenario if R3-R1 is a stub area
>> and the incoming LSA is a type-5, even with strict LSA
>> checking enabled will not exit Helper mode.
> I'm not sure what the network picture looks like but a helper
> router can always terminate graceful restart by flooding an
> inconsistent router or network LSA to the restarting  router.
>
> Thanks,
> Acee
>
>>
>> It can be a nice idea to give some explicit notification
>> by R2 to R1 about exiting helper mode.
>>
>> As rightly pointed by you the above conditions and more
>> has been causing some confusion for some time.
>> Our proposal ;
>> http://tools.ietf.org/wg/ospf/draft-holla-ospf-update-graceful-restart-02.txt 
>>
>> hopefully resolves this.
>> Could we add this as an addendum/reference to RFC3623?, purely an
>> add-on.
>> Best Regards.
>> Sujay
>>
>> On 10/5/06, Acee Lindem <acee@cisco.com> wrote:
>>>
>>> Khan Amir-G20247 wrote:
>>> > Hi Ace
>>> >
>>> > But reaching to a FULL state is not one of the conditions for 
>>> Helper to
>>> > quit Helper mode, I guess a Helper who has reached
>>> > to FULL state with its restarting router will wait for Grace LSAs 
>>> to be
>>> > flushed or GR timeout to happen for exiting Helper mode.
>>> >
>>> No - The presumption is when you reach FULL state you don't need to 
>>> "quit"
>>> helping - you have "finished" helping. Over the years, there have 
>>> been a
>>> few situations that could have been better documented - however, this
>>> never
>>> caused any confusion in the past.
>>>
>>> Thanks,
>>> Acee
>>>
>>> > Regards
>>> > Aamir
>>> >
>>> >
>>> > -----Original Message-----
>>> > From: Acee Lindem [mailto:acee@cisco.com]
>>> > Sent: Thursday, October 05, 2006 8:00 PM
>>> > To: Khan Amir-G20247
>>> > Cc: ospf@ietf.org
>>> > Subject: Re: [OSPF] OSPF GR query
>>> >
>>> > Hello Amir,
>>> >
>>> > Khan Amir-G20247 wrote:
>>> >
>>> >>
>>> >>
>>> >> Hi
>>> >>
>>> >> I have query related to OSPF Graceful Restart.
>>> >>
>>> >> Consider this scenario:
>>> >>
>>> >>
>>> >>
>>> >> - Three Routers R1, R2 and R3 connected via Broadcast networks.
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> - Where R1 is a DR on both the segments, where as R2 and R3 are in
>>> >> DR-other
>>> >> - Now R1 wants to perform GR, R2 and R3 agrees to be its Helpers.
>>> >> - Now after restart R1 will try to form adjacency with both R2 
>>> and R3.
>>> >>
>>> >
>>> >
>>> >> - Lets say R1 and R2 had become FULL, while R1 and R3 had reached
>>> >> Exstart state.   Now at this time R2 receives an LSA (any type 
>>> 1-5 and
>>> >> 7, from some other router existing in the same area, not pictured
>>> >> here) which he needs to flood to R1.
>>> >> - This will force R2 to quit Helper Status, while R1 and R3 are 
>>> still
>>> >> in process of forming adjacency.
>>> >>
>>> >>
>>> > Since he has reached FULL state, he is no longer a helper router.
>>> >
>>> >> Considering above scenario, my doubts are:
>>> >>
>>> >> - How will R1 come to know that its Helper R2 has quit?
>>> >>
>>> >>
>>> > Since he has reached FULL state, he is no longer a helper router.
>>> >
>>> >> - Will the adjacency between R1 and R2 needs to go down, as R2 quits
>>> >> helper mode?
>>> >>
>>> >>
>>> > No
>>> >
>>> >> - Will this effect the adjacency formation of R1 and R3?
>>> >>
>>> >>
>>> > No. R3 MAY exit helper status and re-originate a new router LSA if he
>>> > receives the new LSA before reaching FULL state with R1 AND he is has
>>> > strict-LSA-checking configured.
>>> >
>>> > Hope this helps,
>>> > Acee
>>> >
>>> >>
>>> >>
>>> >> Regards
>>> >> Aamir
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> 
>>> ----------------------------------------------------------------------
>>> >> --
>>> >>
>>> >> _______________________________________________
>>> >> OSPF mailing list
>>> >> OSPF@ietf.org
>>> >> https://www1.ietf.org/mailman/listinfo/ospf
>>> >>
>>> >>
>>> >

>>> >
>>>
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>
>>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>
>

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Hi All.

I  have the  following  query .

Here my setup  is Cisco2600 connected to   non- cisco device over T1
interface.

OSPF is configured between these two devices.

IOS version of Cisco router is 12.1 where as the non-cisco device's
operating system is Windows NT.

I am getting the following error on non-cisco device side :


Rejected an OSPF packet from 165.65.65.100 to 224.0.0.5 because the
OSPF data length in the OSPF header was 48 but the length calculated
from the IP Header fields was 60.

Due to the above reason  routing is not happening between private
networks  of above mentioned devices.

Above 165.65.65.100 is cisco end WAN address and  at non-cisco end WAN
address is 165.65.65.145.


Please let me know the solution , so that IP routing becomes
successful.

Thanks in advance.


regards,
Santosh

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Hi All.<br><br>I &nbsp;have the &nbsp;following &nbsp;query .<br><br>Here my setup &nbsp;is Cisco2600 connected to &nbsp; non- cisco device over T1<br>interface.<br><br>OSPF is configured between these two devices.<br><br>IOS version of Cisco router is 
12.1 where as the non-cisco device's<br>operating system is Windows NT.<br><br>I am getting the following error on non-cisco device side :<br><br><br>Rejected an OSPF packet from <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://165.65.65.100/" target="_blank">
165.65.65.100</a> to <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://224.0.0.5/" target="_blank">224.0.0.5</a> because the<br>OSPF data length in the OSPF header was 48 but the length calculated<br>
from the IP Header fields was 60.<br><br>Due to the above reason &nbsp;routing is not happening between private<br>networks &nbsp;of above mentioned devices.<br><br>Above <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://165.65.65.100/" target="_blank">
165.65.65.100</a> is cisco end WAN address and &nbsp;at non-cisco end WAN<br>address is <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://165.65.65.145/" target="_blank">165.65.65.145</a>.<br><br><br>Please let me know the solution , so that IP routing becomes
<br>successful.<br><br>Thanks in advance.<br><br><br>regards,<br>Santosh<br>

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Hi Santosh,

If you read section 8.2 of RFC 2328, there is no place that says
that an OSPF router should make this check. We have OSPF Link Local
Signalling as a OSPF WG document and with this extension, the OSPF header
length will always be different than IP length. We'll discuss offline 
how to
resolve your immediate concern.

Acee

SANTOSH H wrote:
> Hi All.
>
> I  have the  following  query .
>
> Here my setup  is Cisco2600 connected to   non- cisco device over T1
> interface.
>
> OSPF is configured between these two devices.
>
> IOS version of Cisco router is 12.1 where as the non-cisco device's
> operating system is Windows NT.
>
> I am getting the following error on non-cisco device side :
>
>
> Rejected an OSPF packet from 165.65.65.100 to 224.0.0.5 because the
> OSPF data length in the OSPF header was 48 but the length calculated
> from the IP Header fields was 60.
>
> Due to the above reason  routing is not happening between private
> networks  of above mentioned devices.
>
> Above 165.65.65.100 is cisco end WAN address and  at non-cisco end WAN
> address is 165.65.65.145.
>
>
> Please let me know the solution , so that IP routing becomes
> successful.
>
> Thanks in advance.
>
>
> regards,
> Santosh
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>   

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From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] ospf packet rejection issues.....................
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Have you tried a different Vendor ?.

No offense...For light humour...

Rgds,
Abhay

SANTOSH H wrote:
> Hi All.
>
> I  have the  following  query .
>
> Here my setup  is Cisco2600 connected to   non- cisco device over T1
> interface.
>
> OSPF is configured between these two devices.
>
> IOS version of Cisco router is 12.1 where as the non-cisco device's
> operating system is Windows NT.
>
> I am getting the following error on non-cisco device side :
>
>
> Rejected an OSPF packet from 165.65.65.100 <http://165.65.65.100/> to 
> 224.0.0.5 <http://224.0.0.5/> because the
> OSPF data length in the OSPF header was 48 but the length calculated
> from the IP Header fields was 60.
>
> Due to the above reason  routing is not happening between private
> networks  of above mentioned devices.
>
> Above 165.65.65.100 <http://165.65.65.100/> is cisco end WAN address 
> and  at non-cisco end WAN
> address is 165.65.65.145 <http://165.65.65.145/>.
>
>
> Please let me know the solution , so that IP routing becomes
> successful.
>
> Thanks in advance.
>
>
> regards,
> Santosh
> ------------------------------------------------------------------------
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>   

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<html>
<head>
  <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
<br>
Have you tried a different Vendor ?.<br>
<br>
No offense...For light humour...<br>
<br>
Rgds,<br>
Abhay<br>
<br>
SANTOSH H wrote:
<blockquote
 cite="midc57b04b80612060400j12206d39r44f73ada1d136701@mail.gmail.com"
 type="cite">Hi All.<br>
  <br>
I &nbsp;have the &nbsp;following &nbsp;query .<br>
  <br>
Here my setup &nbsp;is Cisco2600 connected to &nbsp; non- cisco device over T1<br>
interface.<br>
  <br>
OSPF is configured between these two devices.<br>
  <br>
IOS version of Cisco router is 12.1 where as the non-cisco device's<br>
operating system is Windows NT.<br>
  <br>
I am getting the following error on non-cisco device side :<br>
  <br>
  <br>
Rejected an OSPF packet from <a
 onclick="return top.js.OpenExtLink(window,event,this)"
 href="http://165.65.65.100/" target="_blank">
165.65.65.100</a> to <a
 onclick="return top.js.OpenExtLink(window,event,this)"
 href="http://224.0.0.5/" target="_blank">224.0.0.5</a> because the<br>
OSPF data length in the OSPF header was 48 but the length calculated<br>
from the IP Header fields was 60.<br>
  <br>
Due to the above reason &nbsp;routing is not happening between private<br>
networks &nbsp;of above mentioned devices.<br>
  <br>
Above <a onclick="return top.js.OpenExtLink(window,event,this)"
 href="http://165.65.65.100/" target="_blank">
165.65.65.100</a> is cisco end WAN address and &nbsp;at non-cisco end WAN<br>
address is <a onclick="return top.js.OpenExtLink(window,event,this)"
 href="http://165.65.65.145/" target="_blank">165.65.65.145</a>.<br>
  <br>
  <br>
Please let me know the solution , so that IP routing becomes
  <br>
successful.<br>
  <br>
Thanks in advance.<br>
  <br>
  <br>
regards,<br>
Santosh<br>
  <pre wrap="">
<hr size="4" width="90%">
_______________________________________________
OSPF mailing list
<a class="moz-txt-link-abbreviated" href="mailto:OSPF@ietf.org">OSPF@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www1.ietf.org/mailman/listinfo/ospf">https://www1.ietf.org/mailman/listinfo/ospf</a>
  </pre>
</blockquote>
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n:Rao;Abhay 
email;internet:abhayds@acm.org
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FYI - per discussion on list...

>Date: Thu, 07 Dec 2006 14:26:32 -0500
>To: internet-drafts@ietf.org
>From: Lou Berger <lberger@labn.net>
>Subject: Revised draft, new name: draft-ietf-ospf-rfc2370bis-00.txt
>Cc: lberger@labn.net, "Igor Bryskin" <IBryskin@advaoptical.com>, 
>alex.zinin@alcatel.com, zinin@psg.com, Acee Lindem <acee@cisco.com>
>
>Hello,
>         We'd like to submit a revision to our draft titled "The 
> OSPF Opaque LSA Option".  If possible, please announce this draft 
> to the OSPF WG.  We, as approved by the WG chair, would like this 
> draft to be issued as draft-ietf-ospf-rfc2370bis-00.txt, and to 
> replace draft-berger-ospf-rfc2370bis-00.txt.  The draft is available from:
>http://www.labn.net/docs/draft-ietf-ospf-rfc2370bis-00.txt
>
>Much thanks,
>Lou (and co-authors)


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	draft-holla-ospf-update-graceful-restart-02.txt
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Hi Sujay, et al,

	The RFC 3623 has at least what I believe to be these
	loopholes. The first 8 should be no-brainers, IMO :-)
	Except #6. Since 99+% IMO are BMA envs and most of
	my work is their, no suggestions pertain stricly 
	to non BMA envs.

	1) Before GR-LSAs are sent, their should be a check for
	   Opaque capability (identified during database exchange).
	   If no capability, it should be prematurely terminated.
	   FYI: GR-LSAs are Opaque LSAs which require Opaque support.

	2) To support up to 1 hr.
	   If the GR-rtr is a DR-other re-originating self LSAs
	   should give 1 hrs worth of time. 

	2b) If the original self
	   orig LSAs were DNA LSAs, they need to be re-originated
	   as non DNA LSAs during the GR-interval.
	  

	3) Re-sending GR-LSAs  frequently needs to be explicitly stated
	   to be limited to the standard of LSA retransmission of
	   MinLSInterval (5) secs.

	4) No MAXAGE LSAs should be outstanding by any of the
	   rtrs on the link when the GR-LSAs are xmited.

	5) No LSAs should be present on any full adj rexmit list at
	   the time that the GR-rtr stops ackimg OSPF control pkts from 
	   its full adj nbrs.

	6) If the GR-rtr X is a DR other, it should be explictly stated
	   that the DR/BDR SHOULD flood these GR-LSAs back on the link
	   without consideration that their are no direct full adj rtrs
	   to GR-rtr X.

	7) The draft could be made clearer if a timeline were
	   used as: at GR-time 0, pre rtr-X, verifies that no OSPF
	   events are occuring and that its rexmits lists are empty.
	   It it then validates its full adj nbrs for Opaq support and
	   if present, originates Gr-LSAs. Rtr-X SHOULD waits for acks
	   of its GR-LSAs and starts the GR-interval timer which occurs
	   at GR-time 1. ...

	8) If rtr-Y accepts helper responsibilites, then it should back
	   off any flooding / retransmissions to rtr-X of OSPF control
	   pkts for a max of the GR-interval.

	 9) ??? If GR-rtr is a DR-other, then why NOT support a secondary type
	   of rtr helper-Y? If they support GR, then they are allowed
	   to keep their original hello until the GR-interval ends.
	   No other support is required by the secondary rtr-Ys.
	   By link flooding requirements they all must recv the GR-LSAs.
	   No, they won't understand them if they don't support Opaque LSAs
	       and thus THOSE will no longer adv rtr-X after rtr dead interval.

	A) ??? Topology changes..

	   a) Should a new link / intf ALYWAYS prematurely end a GR-helper-y.
	      If this new link has a higher outgoing cost by say helper-Y
	      than the link to Gr-rtr-X, shouldn't it be obvious that we
	      prefer the link to X?

	     Why can't we run the new SPF algor, flood the LSA, and
	     not BLACKHOLE rtr-X?

	     If the GR-rtr is a DR. Worse-case.  the flooding will still occur
	     via the BDR. Yes, a requirement is that if the GR-rtr is a DR,
	     the BDR must be present.

	Mitchell Erblich


sujay gupta wrote:
> 
> Mithcell,
> Thanks for your previous comments.
> Could you please add to the list the RFC 3623
> original draft has loops and we need some
> update to resolve them.
> Thanks,
> Sujay
> 
> ---------- Forwarded message ----------
> From: Acee Lindem <acee@cisco.com>
> Date: Dec 5, 2006 4:37 AM
> Subject: [OSPF] Update to OSPF Graceful Restart procedure -
> draft-holla-ospf-update-graceful-restart-02.txt
> To: OSPF List <ospf@ietf.org>
> 
> This draft was presented in Montreal and was refreshed prior to the
> San
> Diego IETF.
> It proposes two change to RFC 3623.
> 
>    1) Helper termination criteria between strict-LSA checking and no
> LSA
> checking.
>    2) Explicit helper notification that graceful restart is terminated
> (other than flooding an
>        inconsistent LSA).
> 
> Right now there isn't consensus as to whether or not there are
> requirements for these
> enhancements.  Since in this E-mail I'm speaking as WG Co-chair, I'll
> comment as a
> WG member and RFC 3623 co-author in a separate E-mail.
> 
> Please read the refresh version of the draft and comment.
> 
> Thanks,
> Acee
> 
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf

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Subject: [OSPF] RE: [Isis-wg] Re: [Fwd: [mpls] WG Last Call
	ondraft-ietf-mpls-number-0-bw-te-lsps-02.txt]
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JP -

Sorry for the very belated comments - but I do have two minor, but still
important, concerns regarding IS-IS.

Both are in Section 3.1.

1)You have specified a 32 bit value for the number of unconstrained TE
LSPs. I would prefer that this be a 16 bit value. This still provides
ample range and given the 255 octet limit for a TLV, it is worthwhile to
be prudent in our use of encoding space. And, unlike OSPF, there is no
benefit in IS-IS to attempts to align fields on a natural boundary.
Whether you want to change OSPF encoding to match is not required and is
left up to you and OSPF folks to decide.

So
     Length (1 octet): 4

becomes

     Length (1 octet): 2

And

   Value (4 octets): number of unconstrained TE LSP(s) signalled across
   the link.

Becomes

   Value (2 octets): number of unconstrained TE LSP(s) signalled across
   the link.

2)Remove the following sentence from the first paragraph of Section 3.1:

"If a second instance of the Number of
   0-bandwidth TE LSP(s) sub-TLV is present, the receiving system MUST
   only process the first instance of the sub-TLV."

In cases where a TLV may move from one LSP fragment to another (for
example because of the addition of information which exceeds the
carrying capacity of the original LSP fragment) a router may have
multiple copies of the same TLV as a transient condition. It is
impossible to know which of the copies is newer and therefore impossible
to deterministically decide which is the first instance of a subTLV. So
it is better to leave the behavior in this case as undefined.

Thanx - and once again my apologies for the very late review.

   Les

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From ospf-bounces@ietf.org Thu Dec 07 21:08:00 2006
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From: JP Vasseur <jvasseur@cisco.com>
Date: Thu, 7 Dec 2006 21:07:45 -0500
To: "Les Ginsberg \(ginsberg\)" <ginsberg@cisco.com>
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Subject: [OSPF] Re: [Isis-wg] Re: [Fwd: [mpls] WG Last Call
	ondraft-ietf-mpls-number-0-bw-te-lsps-02.txt]
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Hi Les,

Your comments definitely make sense, thanks. I'll respin a new  
revision very soon, this time the last one.

Thanks.

JP.

On Dec 7, 2006, at 8:46 PM, Les Ginsberg ((ginsberg)) wrote:

> JP -
>
> Sorry for the very belated comments - but I do have two minor, but  
> still
> important, concerns regarding IS-IS.
>
> Both are in Section 3.1.
>
> 1)You have specified a 32 bit value for the number of unconstrained TE
> LSPs. I would prefer that this be a 16 bit value. This still provides
> ample range and given the 255 octet limit for a TLV, it is  
> worthwhile to
> be prudent in our use of encoding space. And, unlike OSPF, there is no
> benefit in IS-IS to attempts to align fields on a natural boundary.
> Whether you want to change OSPF encoding to match is not required  
> and is
> left up to you and OSPF folks to decide.
>
> So
>      Length (1 octet): 4
>
> becomes
>
>      Length (1 octet): 2
>
> And
>
>    Value (4 octets): number of unconstrained TE LSP(s) signalled  
> across
>    the link.
>
> Becomes
>
>    Value (2 octets): number of unconstrained TE LSP(s) signalled  
> across
>    the link.
>
> 2)Remove the following sentence from the first paragraph of Section  
> 3.1:
>
> "If a second instance of the Number of
>    0-bandwidth TE LSP(s) sub-TLV is present, the receiving system MUST
>    only process the first instance of the sub-TLV."
>
> In cases where a TLV may move from one LSP fragment to another (for
> example because of the addition of information which exceeds the
> carrying capacity of the original LSP fragment) a router may have
> multiple copies of the same TLV as a transient condition. It is
> impossible to know which of the copies is newer and therefore  
> impossible
> to deterministically decide which is the first instance of a  
> subTLV. So
> it is better to leave the behavior in this case as undefined.
>
> Thanx - and once again my apologies for the very late review.
>
>    Les
>

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From ospf-bounces@ietf.org Sun Dec 10 16:19:03 2006
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Subject: [OSPF] distributed version of John Moy's ospfd simulator
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Hi all,

A distributed version of John Moy's ospfd simulator is available at
http://www.cs.uwm.edu/~mukul/newospfd.html

The main changes over the original simulator are:

1) Individual router processes could be run over different machines.
2) Topology changes can be specified in a simulation script.
3) It is possible to associate time requirement with different processing tasks
(processing packets, doing Dijkstra calculation etc.) (hence it is possible to
track router "busy" periods).
4) Took away the GUI.

We have been using the simulator for over 6 months now and hence are pretty
confident that it is now bug free. We have used the simulator to do 80 router
simulations over 2 linux machines. We have not yet worked on porting it to
other OS.

We dont yet have extensive documentation for the modified simulator. Some
documentation is available on the web page identified above. I will be happy to
help any one interested in using this simulator. I will be happy to receive any
comments on our modifications.

Thanks,
Mukul Goyal



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From ospf-bounces@ietf.org Mon Dec 11 08:48:26 2006
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Date: Mon, 11 Dec 2006 08:47:15 -0500
To: Lou Berger <lberger@labn.net>
From: Lou Berger <lberger@labn.net>
Subject: Re: [OSPF] Fwd: Revised draft, new name:
	draft-ietf-ospf-rfc2370bis-00.txt
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All,
         Here's a list of what's changed between this rev and the rev 
discussed at the last ietf.  All substantive changes were made after 
discussion on the list with Acee.

1) Made a WG draft.  (name change draft-berger-ospf-rfc2370bis-00.txt 
to draft-ietf-ospf-rfc2370bis-00.txt)
2) swapped sections 5 and 6
3) Fixed a number of typos from the carried over from RFC2370.
4) Added explicit references to NSSAs
5) Clarified flooding rules in 3.1, also added reference to OSPFv3 (
6) In Section 5, tightened e-bit processing language.
7) Replaced management considerations section (now section 6) to 
indicated that all original points in RFC2370 are now addressed in 
draft-ietf-ospf-mib-update-
8) updated references.
9) updated section 12.1 to reflect current usage of the OSPF Options field.
10) Other minor/nit editorial changes.

Much thanks to Acee for taking the time to do such a thorough review 
of the draft.  It is much improved as a result.

That's it,
Lou


At 02:27 PM 12/7/2006, Lou Berger wrote:

>FYI - per discussion on list...
>
>>Date: Thu, 07 Dec 2006 14:26:32 -0500
>>To: internet-drafts@ietf.org
>>From: Lou Berger <lberger@labn.net>
>>Subject: Revised draft, new name: draft-ietf-ospf-rfc2370bis-00.txt
>>Cc: lberger@labn.net, "Igor Bryskin" <IBryskin@advaoptical.com>, 
>>alex.zinin@alcatel.com, zinin@psg.com, Acee Lindem <acee@cisco.com>
>>
>>Hello,
>>         We'd like to submit a revision to our draft titled "The 
>> OSPF Opaque LSA Option".  If possible, please announce this draft 
>> to the OSPF WG.  We, as approved by the WG chair, would like this 
>> draft to be issued as draft-ietf-ospf-rfc2370bis-00.txt, and to 
>> replace draft-berger-ospf-rfc2370bis-00.txt.  The draft is available from:
>>http://www.labn.net/docs/draft-ietf-ospf-rfc2370bis-00.txt
>>
>>Much thanks,
>>Lou (and co-authors)
>
>
>_______________________________________________
>OSPF mailing list
>OSPF@ietf.org
>https://www1.ietf.org/mailman/listinfo/ospf
>


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"yourin boyish curiosity about his "find."my reading-book in sometimes, =
if you'd like it.
on his table, a little vase for his flower, heabout among the gables with =
a watering pot,rested upon two long, horizontal bars, which
little girl's things away!" and maud dived
table and looking about for more.so securely that mombi could not find a =
crackit, but it's come back, you see, and i'mi sink or swim. hang greek =
and latin! wish
at these words they all looked around,skill and entire devotion can do. =
he wouldsettle matters for rosy, and you'll lend
in time you would keep your word. but, polly,
in time you would keep your word. but, polly,quite carried awaywe're all =
poor, feeble worms, and the bestby the rain. professor bhaer met them at
trembling for her piano legs as the fourappeal, for she went and stood =
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emerald city with you, that oz would givecame stumbling back, screaming =
in a greathe thought she was mourning for mr. banks,
wish to send for me=3F 
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fearfully and wonderfully made, fell uponsiesta was considered the thing, =
and people lay about in tents or out as theyfor the gump, already high in =
the air, turned its head at tip's command and
which worked the miracle. if he had any sorrow, 'it sat with its head =
under
not all play nicely together, and not have any dreadful secrets. =
wednesday afternoonfor a minute nothings. b. pat paw)fortunately
"because he does not love me, mamma." and the poor girl hid heras she =
glancedwrapper hung across it and the faded slippers lying ready. books =
and basket,
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pleasant
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danger of such gifts and tastesfriends are cordially invited. knowing =
that you would like to help, i send some
seen him, you know. shall i begin=3F this looks rather nice."the old =
lullaby she used to sing when i was a little child.""very well," answered =
nick, "the broom shall be used for a tail,"happy, and i mustn't wish her =
back, but i dread the going home, much as i longout the best. 
fortunatelyi can't walk on cold stones with thin slippers, can i=3F" =
began rose,up to miss cameron, who never lifted her eyes, but said in =
that wonderful
spoke, jo saw her mother fold her lips tightly, as if ill pleasedkitty =
never appeared till the bell rang; and christie was fond of"he's not gone =
i guess you'll find him in the parlor," said steve,"very. why,

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<BR>"yourin boyish curiosity about his "find."my reading-book in =
sometimes, if you'd like it.<BR>
on his table, a little vase for his flower, he&nbsp;&nbsp;about among the =
gables with a watering pot,&nbsp;&nbsp;rested upon two long, horizontal =
bars, which<BR>
little girl's things away!" and maud =
dived&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>table and looking about for more.so securely that mombi could not =
find a crackit, but it's come back, you see, and i'mi sink or swim. hang =
greek and latin! wish<BR>
at these words they all looked around,&nbsp;&nbsp;skill and entire =
devotion can do. he would&nbsp;&nbsp;settle matters for rosy, and you'll =
lend<BR>
in time you would keep your word. but, =
polly,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>in time you would keep your word. but, polly,quite carried awaywe're =
all poor, feeble worms, and the bestby the rain. professor bhaer met them =
at<BR>
trembling for her piano legs as the four&nbsp;&nbsp;appeal, for she went =
and stood before him,&nbsp;&nbsp;decorating the clothes-lines =
overhead.<BR>
and he ordered susie to bring up her =
slate.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"i'm gladi took the key from your helpless hand, foundtemper, she =
always wanted to laugh, he bouncedus drink steve's health with all the =
honors."<BR>
emerald city with you, that oz would give&nbsp;&nbsp;came stumbling back, =
screaming in a great&nbsp;&nbsp;he thought she was mourning for mr. =
banks,<BR>
wish to send for me=3F =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
amy. you've behaved sweetly, and i respectno one wanted toand dismay. for =
the room was filled withher with a mixture of wonder and alarm in<BR>
fearfully and wonderfully made, fell upon&nbsp;&nbsp;siesta was =
considered the thing, and people lay about in tents or out as =
they&nbsp;&nbsp;for the gump, already high in the air, turned its head at =
tip's command and<BR>
which worked the miracle. if he had any sorrow, 'it sat with its head =
under&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
not all play nicely together, and not have any dreadful secrets. =
wednesday afternoonfor a minute nothing&nbsp;&nbsp;&nbsp;&nbsp;s. b. pat =
paw)fortunately&nbsp;&nbsp;
"because he does not love me, mamma." and the poor girl hid her<BR>as she =
glanced&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;wrapper hung across it and the faded =
slippers lying ready. books and basket,&nbsp;&nbsp;
we shall be kind masters, and will strive to render your existence as =
pleasant&nbsp;&nbsp;&nbsp;&nbsp;<BR>
to long for more society. tried to imitate. rose did not know half the =
danger of such gifts and tastes&nbsp;&nbsp;&nbsp;&nbsp;friends are =
cordially invited. knowing that you would like to help, i send =
some&nbsp;&nbsp;<BR>
seen him, you know. shall i begin=3F this looks rather nice."the old =
lullaby she used to sing when i was a little child."&nbsp;&nbsp;"very =
well," answered nick, "the broom shall be used for a tail,"&nbsp;happy, =
and i mustn't wish her back, but i dread the going home, much as i =
long&nbsp;&nbsp;out the best. 
fortunatelyi can't walk on cold stones with thin slippers, can i=3F" =
began rose,&nbsp;&nbsp;&nbsp;&nbsp;up to miss cameron, who never lifted =
her eyes, but said in that wonderful<BR>
spoke, jo saw her mother fold her lips tightly, as if ill pleasedkitty =
never appeared till the bell rang; and christie was fond =
of&nbsp;&nbsp;&nbsp;"he's not gone i guess you'll find him in the =
parlor," said steve,"very. why,
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From ospf-bounces@ietf.org Mon Dec 11 20:46:45 2006
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From: Michael Rozhavsky <mrozhavsky@fortinet.com>
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Hi,

I have a question regarding draft-nguyen-ospf-restart-06.txt.

Consider a topology with 4 routers in a broadcast network. Now, assume
that one of the DROther routers restarts. What should another DROther
router do with hello packets that have RS bit set? The draft says that
we should skip 2-way connectivity check only when the neighbor is in
state FULL, but does not explicitly says what to do otherwise.

Thank you in advance.
-- 
	Michael Rozhavsky

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From ospf-bounces@ietf.org Tue Dec 12 01:31:20 2006
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Date: Tue, 12 Dec 2006 14:29:02 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] OSPF Restart Signaling
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This is a multi-part message in MIME format.

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    hi Rozhavsky,
An implementation explicitly might record that a router requested a 
re-start, but the DR other does
not qualify for helping, since it has no information it can give to 
re-starting DR other.
One of the better things to do here is just give a log information ..
Abhay




Michael Rozhavsky wrote:
> Hi,
>
> I have a question regarding draft-nguyen-ospf-restart-06.txt.
>
> Consider a topology with 4 routers in a broadcast network. Now, assume
> that one of the DROther routers restarts. What should another DROther
> router do with hello packets that have RS bit set? The draft says that
> we should skip 2-way connectivity check only when the neighbor is in
> state FULL, but does not explicitly says what to do otherwise.
>
> Thank you in advance.
>   

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From ospf-bounces@ietf.org Tue Dec 12 12:29:59 2006
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Subject: [OSPF] Extensions to OSPF for Advertising Optional Router
	Capabilities
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Authors,

	1)
	It has come to my attention about a possible
	inconsistency or ordering of non-consistent
	options now exist.

	Let me clarify... Graceful Restart example

		This new draft introduces new options / capabilities
		(Graceful Restart) with bit 0 and bit 1. These two bits
		alone can cause confusion, but with the additional
		requirement that GR requires Opaque LSA support we have
		a THIRD bit involvement.

		In some document, there needs clarification as to at
		least GR, whether the Opaque bit should first be checked
		before either of these two other bits to validate
		whether GR support is possible.

			The first doc (GRACE) never suggested the Opaque
			bit LSA check before a GR-LSA was initially adv...

		Secondly, there needs to be a clarification as what
		should be done if a router originates Grace-LSAs that
		originated this LSA and did NOT set bit 0 
		(OSPF graceful restart capable)

		Thirdly, does the adv having not set bit 1 
		(OSPF graceful restart helper) SUGGEST all full adj 
		nbrs that with to enter GR and understand this bit,
		check that this bit was set? And not send out a Grace-LSA
		if it wasn't...

		Fourth, does the support of either bit assume that the other
		bit is supported? If we set bit 1, does that mean bit "0" must
		be set?

	
	2) General comment / questions

	 A) What is meant by "OSPF routers MAY optionally advertise their
optional capabilities"?

		Thus, what is "gained" by advertising say the GR bits?

		Can a rtr optionally support its optional advs?
		
			Or stated another way..

		Can a rtr that has advertised GR functionality, support this
functionality
		to only a subset of its nbrs?
		Ex: Can a DR only support a rtr that is a BDR doing a GR and not
support
		    any DRothers doing a GR??????


	Thank you,
		Mitchell Erblich

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Subject: Re: [OSPF] Extensions to OSPF for Advertising Optional
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Mitchell,

Erblichs wrote:
> Authors,
>
> 	1)
> 	It has come to my attention about a possible
> 	inconsistency or ordering of non-consistent
> 	options now exist.
>
> 	Let me clarify... Graceful Restart example
>
> 		This new draft introduces new options / capabilities
> 		(Graceful Restart) with bit 0 and bit 1. These two bits
> 		alone can cause confusion, but with the additional
> 		requirement that GR requires Opaque LSA support we have
> 		a THIRD bit involvement.
>
> 		In some document, there needs clarification as to at
> 		least GR, whether the Opaque bit should first be checked
> 		before either of these two other bits to validate
> 		whether GR support is possible.
>
> 			The first doc (GRACE) never suggested the Opaque
> 			bit LSA check before a GR-LSA was initially adv...
>
> 		Secondly, there needs to be a clarification as what
> 		should be done if a router originates Grace-LSAs that
> 		originated this LSA and did NOT set bit 0 
> 		(OSPF graceful restart capable)
>
> 		Thirdly, does the adv having not set bit 1 
> 		(OSPF graceful restart helper) SUGGEST all full adj 
> 		nbrs that with to enter GR and understand this bit,
> 		check that this bit was set? And not send out a Grace-LSA
> 		if it wasn't...
>
> 		Fourth, does the support of either bit assume that the other
> 		bit is supported? If we set bit 1, does that mean bit "0" must
> 		be set?
>   
As clearly stated in the document, the bits in question are informational.

> 	
> 	2) General comment / questions
>
> 	 A) What is meant by "OSPF routers MAY optionally advertise their
> optional capabilities"?
>
> 		Thus, what is "gained" by advertising say the GR bits?
>   
The infra-structure provides a mechanism for future options (e.g., the
TE capabilities). Since the bits advertise pre-date the corresponding 
functions,
we can't very well make them dependent on them. The bits (for OSPF routers
that do advertise the new capabilities) can be useful in debugging (this 
is also
stated in the document).

> 		Can a rtr optionally support its optional advs?
> 		
> 			Or stated another way..
>
> 		Can a rtr that has advertised GR functionality, support this
> functionality
> 		to only a subset of its nbrs?
> 		Ex: Can a DR only support a rtr that is a BDR doing a GR and not
> support
> 		    any DRothers doing a GR??????
>   
Nope - please read RFC 3623.

Thanks,
Acee
>
> 	Thank you,
> 		Mitchell Erblich
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>
>   

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From ospf-bounces@ietf.org Tue Dec 12 17:33:13 2006
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Date: Tue, 12 Dec 2006 17:32:04 -0500
From: Acee Lindem <acee@cisco.com>
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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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Speaking as WG Chair:

I'd like to initiate discussion on this draft so that we can let the authors
know whether the WG wants to presue it furthers.

Thanks,
Acee

Yue Wang wrote:
> This document describes AOSPF (Anycast Extensions to OSPFv3),
>   a routing protocol which extends OSPFv3 to support anycast, which
>   we implemented and tested successfully in our IPv6 test bed. And
>   the performance analysis shows the overhead of AOSPF is low.
>
> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>
>

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From: Acee Lindem <acee@cisco.com>
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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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Speaking as a WG Member and author of the RFC 2740 respin:

My opinion is that the protocol extensions described in the draft
are completely unnecessary and the OSPFv3 (RFC 2740 and its
update) already can support anycast addresses as /128 prefixes.
One simply uses the lowest cost path. Note that the protocol
already support configuration of host routes as described in appendix
C.7.

Thanks,
Acee

Acee Lindem wrote:
> Speaking as WG Chair:
>
> I'd like to initiate discussion on this draft so that we can let the 
> authors
> know whether the WG wants to presue it furthers.
>
> Thanks,
> Acee
>
> Yue Wang wrote:
>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>   a routing protocol which extends OSPFv3 to support anycast, which
>>   we implemented and tested successfully in our IPv6 test bed. And
>>   the performance analysis shows the overhead of AOSPF is low.
>>
>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>
>>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>

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From ospf-bounces@ietf.org Tue Dec 12 19:35:34 2006
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Date: Tue, 12 Dec 2006 19:34:34 -0500
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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


> Speaking as a WG Member and author of the RFC 2740 respin:
> 
> My opinion is that the protocol extensions described in the draft
> are completely unnecessary and the OSPFv3 (RFC 2740 and its
> update) already can support anycast addresses as /128 prefixes.
> One simply uses the lowest cost path. Note that the protocol
> already support configuration of host routes as described in appendix
> C.7.

I would tend to agree with this analysis... One of the nice things about
anycast is that routers and routing don't have to change to make it
work. Specifying extensions to an IGP to "make it work" seems contrary
to the spirit of the thing....

:-)

Russ


- --
riw@cisco.com CCIE <>< Grace Alone

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From ospf-bounces@ietf.org Tue Dec 12 21:36:03 2006
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Date: Wed, 13 Dec 2006 10:19:08 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
In-reply-to: <457F300E.6030009@cisco.com>
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hi acee,
Not very positive and encouraging, being on a WG chair.
It reminds me of  folks at the ATM forum in the past !!
Thanks,
Abhay

 

Acee Lindem wrote:
> Speaking as a WG Member and author of the RFC 2740 respin:
>
> My opinion is that the protocol extensions described in the draft
> are completely unnecessary and the OSPFv3 (RFC 2740 and its
> update) already can support anycast addresses as /128 prefixes.
> One simply uses the lowest cost path. Note that the protocol
> already support configuration of host routes as described in appendix
> C.7.
>
> Thanks,
> Acee
>
> Acee Lindem wrote:
>> Speaking as WG Chair:
>>
>> I'd like to initiate discussion on this draft so that we can let the 
>> authors
>> know whether the WG wants to presue it furthers.
>>
>> Thanks,
>> Acee
>>
>> Yue Wang wrote:
>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>   a routing protocol which extends OSPFv3 to support anycast, which
>>>   we implemented and tested successfully in our IPv6 test bed. And
>>>   the performance analysis shows the overhead of AOSPF is low.
>>>
>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>
>>>
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ospf
>>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>
>

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From: Acee Lindem <acee@cisco.com>
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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
References: <22b5a47b0612010106i477c1814p982523d5bacd4698@mail.gmail.com>
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Abhay,

Abhay D.S wrote:
> hi acee,
> Not very positive and encouraging, being on a WG chair.
I clearly stated I was speaking a WG member and have just
as much right as anyone else to state my opinion as to whether or
not a specific piece of work is accepted by the WG. If you have
technical comments related to the draft as opposed to critiques of
character, I'd encourage you to share them.

Thanks,
Acee

> It reminds me of  folks at the ATM forum in the past !!
> Thanks,
> Abhay
>
>
>
> Acee Lindem wrote:
>> Speaking as a WG Member and author of the RFC 2740 respin:
>>
>> My opinion is that the protocol extensions described in the draft
>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>> update) already can support anycast addresses as /128 prefixes.
>> One simply uses the lowest cost path. Note that the protocol
>> already support configuration of host routes as described in appendix
>> C.7.
>>
>> Thanks,
>> Acee
>>
>> Acee Lindem wrote:
>>> Speaking as WG Chair:
>>>
>>> I'd like to initiate discussion on this draft so that we can let the 
>>> authors
>>> know whether the WG wants to presue it furthers.
>>>
>>> Thanks,
>>> Acee
>>>
>>> Yue Wang wrote:
>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>   a routing protocol which extends OSPFv3 to support anycast, which
>>>>   we implemented and tested successfully in our IPv6 test bed. And
>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>
>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>
>>>>
>>>
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ospf
>>
>>

_______________________________________________
OSPF mailing list
OSPF@ietf.org
https://www1.ietf.org/mailman/listinfo/ospf



From ospf-bounces@ietf.org Tue Dec 12 21:55:22 2006
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Date: Tue, 12 Dec 2006 18:54:05 -0800
From: "Vishwas Manral" <vishwas.ietf@gmail.com>
To: "Acee Lindem" <acee@cisco.com>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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Hi Abhay,

I agree with the analysis on Acee and Russ on the draft. I have myself
not read the draft yet though.

On another front I must state that Acee has been trying to help and
promote new people in the working group and I have seen that happen
explicitly in some cases and would want to vouch for that.

Thanks,
Vishwas

On 12/12/06, Acee Lindem <acee@cisco.com> wrote:
> Abhay,
>
> Abhay D.S wrote:
> > hi acee,
> > Not very positive and encouraging, being on a WG chair.
> I clearly stated I was speaking a WG member and have just
> as much right as anyone else to state my opinion as to whether or
> not a specific piece of work is accepted by the WG. If you have
> technical comments related to the draft as opposed to critiques of
> character, I'd encourage you to share them.
>
> Thanks,
> Acee
>
> > It reminds me of  folks at the ATM forum in the past !!
> > Thanks,
> > Abhay
> >
> >
> >
> > Acee Lindem wrote:
> >> Speaking as a WG Member and author of the RFC 2740 respin:
> >>
> >> My opinion is that the protocol extensions described in the draft
> >> are completely unnecessary and the OSPFv3 (RFC 2740 and its
> >> update) already can support anycast addresses as /128 prefixes.
> >> One simply uses the lowest cost path. Note that the protocol
> >> already support configuration of host routes as described in appendix
> >> C.7.
> >>
> >> Thanks,
> >> Acee
> >>
> >> Acee Lindem wrote:
> >>> Speaking as WG Chair:
> >>>
> >>> I'd like to initiate discussion on this draft so that we can let the
> >>> authors
> >>> know whether the WG wants to presue it furthers.
> >>>
> >>> Thanks,
> >>> Acee
> >>>
> >>> Yue Wang wrote:
> >>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
> >>>>   a routing protocol which extends OSPFv3 to support anycast, which
> >>>>   we implemented and tested successfully in our IPv6 test bed. And
> >>>>   the performance analysis shows the overhead of AOSPF is low.
> >>>>
> >>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
> >>>>
> >>>>
> >>>
> >>> _______________________________________________
> >>> OSPF mailing list
> >>> OSPF@ietf.org
> >>> https://www1.ietf.org/mailman/listinfo/ospf
> >>>
> >>
> >> _______________________________________________
> >> OSPF mailing list
> >> OSPF@ietf.org
> >> https://www1.ietf.org/mailman/listinfo/ospf
> >>
> >>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>

_______________________________________________
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Date: Wed, 13 Dec 2006 11:27:10 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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    hi vishwas,
I dont disagree fully either, however the new anycast specification is 
the first step
in OSPF where _non-vendor groups_ have demonstrated excellence.Moreover
it is a NSF science grant experiment. Good to have this on OSPF 
discussion group
to help them out.(To ppl who are interested).

The authors never "pressed" that it should replace the current 
specifications.

Thats all..
Thanks,
Abhay


Vishwas Manral wrote:
> Hi Abhay,
>
> I agree with the analysis on Acee and Russ on the draft. I have myself
> not read the draft yet though.
>
> On another front I must state that Acee has been trying to help and
> promote new people in the working group and I have seen that happen
> explicitly in some cases and would want to vouch for that.
>
> Thanks,
> Vishwas
>
> On 12/12/06, Acee Lindem <acee@cisco.com> wrote:
>> Abhay,
>>
>> Abhay D.S wrote:
>> > hi acee,
>> > Not very positive and encouraging, being on a WG chair.
>> I clearly stated I was speaking a WG member and have just
>> as much right as anyone else to state my opinion as to whether or
>> not a specific piece of work is accepted by the WG. If you have
>> technical comments related to the draft as opposed to critiques of
>> character, I'd encourage you to share them.
>>
>> Thanks,
>> Acee
>>
>> > It reminds me of  folks at the ATM forum in the past !!
>> > Thanks,
>> > Abhay
>> >
>> >
>> >
>> > Acee Lindem wrote:
>> >> Speaking as a WG Member and author of the RFC 2740 respin:
>> >>
>> >> My opinion is that the protocol extensions described in the draft
>> >> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>> >> update) already can support anycast addresses as /128 prefixes.
>> >> One simply uses the lowest cost path. Note that the protocol
>> >> already support configuration of host routes as described in appendix
>> >> C.7.
>> >>
>> >> Thanks,
>> >> Acee
>> >>
>> >> Acee Lindem wrote:
>> >>> Speaking as WG Chair:
>> >>>
>> >>> I'd like to initiate discussion on this draft so that we can let the
>> >>> authors
>> >>> know whether the WG wants to presue it furthers.
>> >>>
>> >>> Thanks,
>> >>> Acee
>> >>>
>> >>> Yue Wang wrote:
>> >>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>> >>>>   a routing protocol which extends OSPFv3 to support anycast, which
>> >>>>   we implemented and tested successfully in our IPv6 test bed. And
>> >>>>   the performance analysis shows the overhead of AOSPF is low.
>> >>>>
>> >>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>> >>>>
>> >>>>
>> >>>
>> >>> _______________________________________________
>> >>> OSPF mailing list
>> >>> OSPF@ietf.org
>> >>> https://www1.ietf.org/mailman/listinfo/ospf
>> >>>
>> >>
>> >> _______________________________________________
>> >> OSPF mailing list
>> >> OSPF@ietf.org
>> >> https://www1.ietf.org/mailman/listinfo/ospf
>> >>
>> >>
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ospf
>>
>
>

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&nbsp;&nbsp;&nbsp; hi vishwas,<br>
I dont disagree fully either, however the new anycast specification is
the first step<br>
in OSPF where <u>non-vendor groups</u> have demonstrated
excellence.Moreover<br>
it is a NSF science grant experiment. Good to have this on OSPF
discussion group<br>
to help them out.(To ppl who are interested).<br>
<br>
The authors never "pressed" that it should replace the current
specifications.<br>
<br>
Thats all..<br>
Thanks,<br>
Abhay<br>
<br>
<br>
Vishwas Manral wrote:
<blockquote
 cite="mid77ead0ec0612121854m22dde646s9926ceae66b936c0@mail.gmail.com"
 type="cite">Hi Abhay,
  <br>
  <br>
I agree with the analysis on Acee and Russ on the draft. I have myself
  <br>
not read the draft yet though.
  <br>
  <br>
On another front I must state that Acee has been trying to help and
  <br>
promote new people in the working group and I have seen that happen
  <br>
explicitly in some cases and would want to vouch for that.
  <br>
  <br>
Thanks,
  <br>
Vishwas
  <br>
  <br>
On 12/12/06, Acee Lindem <a class="moz-txt-link-rfc2396E" href="mailto:acee@cisco.com">&lt;acee@cisco.com&gt;</a> wrote:
  <br>
  <blockquote type="cite">Abhay,
    <br>
    <br>
Abhay D.S wrote:
    <br>
&gt; hi acee,
    <br>
&gt; Not very positive and encouraging, being on a WG chair.
    <br>
I clearly stated I was speaking a WG member and have just
    <br>
as much right as anyone else to state my opinion as to whether or
    <br>
not a specific piece of work is accepted by the WG. If you have
    <br>
technical comments related to the draft as opposed to critiques of
    <br>
character, I'd encourage you to share them.
    <br>
    <br>
Thanks,
    <br>
Acee
    <br>
    <br>
&gt; It reminds me of&nbsp; folks at the ATM forum in the past !!
    <br>
&gt; Thanks,
    <br>
&gt; Abhay
    <br>
&gt;
    <br>
&gt;
    <br>
&gt;
    <br>
&gt; Acee Lindem wrote:
    <br>
&gt;&gt; Speaking as a WG Member and author of the RFC 2740 respin:
    <br>
&gt;&gt;
    <br>
&gt;&gt; My opinion is that the protocol extensions described in the
draft
    <br>
&gt;&gt; are completely unnecessary and the OSPFv3 (RFC 2740 and its
    <br>
&gt;&gt; update) already can support anycast addresses as /128
prefixes.
    <br>
&gt;&gt; One simply uses the lowest cost path. Note that the protocol
    <br>
&gt;&gt; already support configuration of host routes as described in
appendix
    <br>
&gt;&gt; C.7.
    <br>
&gt;&gt;
    <br>
&gt;&gt; Thanks,
    <br>
&gt;&gt; Acee
    <br>
&gt;&gt;
    <br>
&gt;&gt; Acee Lindem wrote:
    <br>
&gt;&gt;&gt; Speaking as WG Chair:
    <br>
&gt;&gt;&gt;
    <br>
&gt;&gt;&gt; I'd like to initiate discussion on this draft so that we
can let the
    <br>
&gt;&gt;&gt; authors
    <br>
&gt;&gt;&gt; know whether the WG wants to presue it furthers.
    <br>
&gt;&gt;&gt;
    <br>
&gt;&gt;&gt; Thanks,
    <br>
&gt;&gt;&gt; Acee
    <br>
&gt;&gt;&gt;
    <br>
&gt;&gt;&gt; Yue Wang wrote:
    <br>
&gt;&gt;&gt;&gt; This document describes AOSPF (Anycast Extensions to
OSPFv3),

    <br>
&gt;&gt;&gt;&gt;&nbsp;&nbsp; a routing protocol which extends OSPFv3 to support
anycast, which
    <br>
&gt;&gt;&gt;&gt;&nbsp;&nbsp; we implemented and tested successfully in our IPv6
test bed. And
    <br>
&gt;&gt;&gt;&gt;&nbsp;&nbsp; the performance analysis shows the overhead of AOSPF
is low.
    <br>
&gt;&gt;&gt;&gt;
    <br>
&gt;&gt;&gt;&gt;
<a class="moz-txt-link-freetext" href="http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt">http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt</a>
    <br>
&gt;&gt;&gt;&gt;
    <br>
&gt;&gt;&gt;&gt;
    <br>
&gt;&gt;&gt;
    <br>
&gt;&gt;&gt; _______________________________________________
    <br>
&gt;&gt;&gt; OSPF mailing list
    <br>
&gt;&gt;&gt; <a class="moz-txt-link-abbreviated" href="mailto:OSPF@ietf.org">OSPF@ietf.org</a>
    <br>
&gt;&gt;&gt; <a class="moz-txt-link-freetext" href="https://www1.ietf.org/mailman/listinfo/ospf">https://www1.ietf.org/mailman/listinfo/ospf</a>
    <br>
&gt;&gt;&gt;
    <br>
&gt;&gt;
    <br>
&gt;&gt; _______________________________________________
    <br>
&gt;&gt; OSPF mailing list
    <br>
&gt;&gt; <a class="moz-txt-link-abbreviated" href="mailto:OSPF@ietf.org">OSPF@ietf.org</a>
    <br>
&gt;&gt; <a class="moz-txt-link-freetext" href="https://www1.ietf.org/mailman/listinfo/ospf">https://www1.ietf.org/mailman/listinfo/ospf</a>
    <br>
&gt;&gt;
    <br>
&gt;&gt;
    <br>
    <br>
_______________________________________________
    <br>
OSPF mailing list
    <br>
<a class="moz-txt-link-abbreviated" href="mailto:OSPF@ietf.org">OSPF@ietf.org</a>
    <br>
<a class="moz-txt-link-freetext" href="https://www1.ietf.org/mailman/listinfo/ospf">https://www1.ietf.org/mailman/listinfo/ospf</a>
    <br>
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  <br>
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From ospf-bounces@ietf.org Tue Dec 12 22:29:47 2006
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Date: Wed, 13 Dec 2006 11:17:03 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
In-reply-to: <457F67F1.3080009@cisco.com>
To: Acee Lindem <acee@cisco.com>
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hi acee,
With due respect to your disposition, the Anycast draft is a NSF grant 
project
and it makes a good implementation, as good as OSPFv3 anycast capability.
The authors are definitely, trying out to reach people with other 
perspectives which is
probably different from ours.
Hope you take positive criticism positively.
Period.
Thanks,
Abhay


 

Acee Lindem wrote:
> Abhay,
>
> Abhay D.S wrote:
>> hi acee,
>> Not very positive and encouraging, being on a WG chair.
> I clearly stated I was speaking a WG member and have just
> as much right as anyone else to state my opinion as to whether or
> not a specific piece of work is accepted by the WG. If you have
> technical comments related to the draft as opposed to critiques of
> character, I'd encourage you to share them.
>
> Thanks,
> Acee
>
>> It reminds me of  folks at the ATM forum in the past !!
>> Thanks,
>> Abhay
>>
>>
>>
>> Acee Lindem wrote:
>>> Speaking as a WG Member and author of the RFC 2740 respin:
>>>
>>> My opinion is that the protocol extensions described in the draft
>>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>>> update) already can support anycast addresses as /128 prefixes.
>>> One simply uses the lowest cost path. Note that the protocol
>>> already support configuration of host routes as described in appendix
>>> C.7.
>>>
>>> Thanks,
>>> Acee
>>>
>>> Acee Lindem wrote:
>>>> Speaking as WG Chair:
>>>>
>>>> I'd like to initiate discussion on this draft so that we can let 
>>>> the authors
>>>> know whether the WG wants to presue it furthers.
>>>>
>>>> Thanks,
>>>> Acee
>>>>
>>>> Yue Wang wrote:
>>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>>   a routing protocol which extends OSPFv3 to support anycast, which
>>>>>   we implemented and tested successfully in our IPv6 test bed. And
>>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>>
>>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> OSPF mailing list
>>>> OSPF@ietf.org
>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>
>>>
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>
>>>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>
>

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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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	<457F2DE4.7060009@cisco.com> <457F300E.6030009@cisco.com>
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Abhay,

Abhay D.S wrote:
> hi acee,
> With due respect to your disposition, the Anycast draft is a NSF grant 
> project
> and it makes a good implementation, as good as OSPFv3 anycast capability.
On what technical grounds do you based this statement? I don't see any 
reason
to handle anycast addresses any differently from any other /128 prefix.

> The authors are definitely, trying out to reach people with other 
> perspectives which is
> probably different from ours.
> Hope you take positive criticism positively.
Well that doesn't change the fact that protocol extensions are not 
automatically
accepted by the OSPF WG.

Acee

> Period.
> Thanks,
> Abhay
>
>
>
>
> Acee Lindem wrote:
>> Abhay,
>>
>> Abhay D.S wrote:
>>> hi acee,
>>> Not very positive and encouraging, being on a WG chair.
>> I clearly stated I was speaking a WG member and have just
>> as much right as anyone else to state my opinion as to whether or
>> not a specific piece of work is accepted by the WG. If you have
>> technical comments related to the draft as opposed to critiques of
>> character, I'd encourage you to share them.
>>
>> Thanks,
>> Acee
>>
>>> It reminds me of  folks at the ATM forum in the past !!
>>> Thanks,
>>> Abhay
>>>
>>>
>>>
>>> Acee Lindem wrote:
>>>> Speaking as a WG Member and author of the RFC 2740 respin:
>>>>
>>>> My opinion is that the protocol extensions described in the draft
>>>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>>>> update) already can support anycast addresses as /128 prefixes.
>>>> One simply uses the lowest cost path. Note that the protocol
>>>> already support configuration of host routes as described in appendix
>>>> C.7.
>>>>
>>>> Thanks,
>>>> Acee
>>>>
>>>> Acee Lindem wrote:
>>>>> Speaking as WG Chair:
>>>>>
>>>>> I'd like to initiate discussion on this draft so that we can let 
>>>>> the authors
>>>>> know whether the WG wants to presue it furthers.
>>>>>
>>>>> Thanks,
>>>>> Acee
>>>>>
>>>>> Yue Wang wrote:
>>>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>>>   a routing protocol which extends OSPFv3 to support anycast, which
>>>>>>   we implemented and tested successfully in our IPv6 test bed. And
>>>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>>>
>>>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> OSPF mailing list
>>>>> OSPF@ietf.org
>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>
>>>>
>>>> _______________________________________________
>>>> OSPF mailing list
>>>> OSPF@ietf.org
>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>
>>>>
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ospf
>>
>>

_______________________________________________
OSPF mailing list
OSPF@ietf.org
https://www1.ietf.org/mailman/listinfo/ospf



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Date: Wed, 13 Dec 2006 19:29:59 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
In-reply-to: <457FDB2C.6030800@cisco.com>
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hi acee,

We use OSPF as a TOOL which can be programmed for various styles.

For example:

I want one version of OSPFv3 version running WG approved stamp on it and 
inter-operating.

However I can have my own versions of OSPF probably with a different 
version number within
my network  "only to process anycasting". Probably because anycasting is 
bursty.

Precisely the new AOSPF draft does that and there is nothing wrong with 
it. Tell me what is

wrong in this requirement ?

Thanks,
Abhay










Acee Lindem wrote:
> Abhay,
>
> Abhay D.S wrote:
>> hi acee,
>> With due respect to your disposition, the Anycast draft is a NSF 
>> grant project
>> and it makes a good implementation, as good as OSPFv3 anycast 
>> capability.
> On what technical grounds do you based this statement? I don't see any 
> reason
> to handle anycast addresses any differently from any other /128 prefix.
>
>> The authors are definitely, trying out to reach people with other 
>> perspectives which is
>> probably different from ours.
>> Hope you take positive criticism positively.
> Well that doesn't change the fact that protocol extensions are not 
> automatically
> accepted by the OSPF WG.
>
> Acee
>
>> Period.
>> Thanks,
>> Abhay
>>
>>
>>
>>
>> Acee Lindem wrote:
>>> Abhay,
>>>
>>> Abhay D.S wrote:
>>>> hi acee,
>>>> Not very positive and encouraging, being on a WG chair.
>>> I clearly stated I was speaking a WG member and have just
>>> as much right as anyone else to state my opinion as to whether or
>>> not a specific piece of work is accepted by the WG. If you have
>>> technical comments related to the draft as opposed to critiques of
>>> character, I'd encourage you to share them.
>>>
>>> Thanks,
>>> Acee
>>>
>>>> It reminds me of  folks at the ATM forum in the past !!
>>>> Thanks,
>>>> Abhay
>>>>
>>>>
>>>>
>>>> Acee Lindem wrote:
>>>>> Speaking as a WG Member and author of the RFC 2740 respin:
>>>>>
>>>>> My opinion is that the protocol extensions described in the draft
>>>>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>>>>> update) already can support anycast addresses as /128 prefixes.
>>>>> One simply uses the lowest cost path. Note that the protocol
>>>>> already support configuration of host routes as described in appendix
>>>>> C.7.
>>>>>
>>>>> Thanks,
>>>>> Acee
>>>>>
>>>>> Acee Lindem wrote:
>>>>>> Speaking as WG Chair:
>>>>>>
>>>>>> I'd like to initiate discussion on this draft so that we can let 
>>>>>> the authors
>>>>>> know whether the WG wants to presue it furthers.
>>>>>>
>>>>>> Thanks,
>>>>>> Acee
>>>>>>
>>>>>> Yue Wang wrote:
>>>>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>>>>   a routing protocol which extends OSPFv3 to support anycast, which
>>>>>>>   we implemented and tested successfully in our IPv6 test bed. And
>>>>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>>>>
>>>>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> OSPF mailing list
>>>>>> OSPF@ietf.org
>>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> OSPF mailing list
>>>>> OSPF@ietf.org
>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>
>>>>>
>>>
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>
>>>
>
>

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email;internet:abhayds@acm.org
version:2.1
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_______________________________________________
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OSPF@ietf.org
https://www1.ietf.org/mailman/listinfo/ospf

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From ospf-bounces@ietf.org Wed Dec 13 09:28:45 2006
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Subject: RE: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
Date: Wed, 13 Dec 2006 06:26:19 -0800
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From: "Greg Mirsky" <gmirsky@turinnetworks.com>
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Dear Abhay,
I apologize for non-technical post below.
If an operator agrees with running someone's proprietary protocol would
operator care about IETF's and OSPF WG's seal of approval? But if such
seal is required then it's up to the group to decide whther to put it
down or not. Would you agree?
Any group can use any grant to re-work any existing interoperable
implementation to make it "different". And probably it will be fun and
educational experience to the group. Should OSPF WG or IETF as whole be
involved in such projects?

	Regards,
		Greg

-----Original Message-----
From: Abhay D.S [mailto:abhayds@acm.org]=20
Sent: Wednesday, December 13, 2006 3:30 AM
To: Acee Lindem
Cc: OSPF@ietf.org
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00

hi acee,

We use OSPF as a TOOL which can be programmed for various styles.

For example:

I want one version of OSPFv3 version running WG approved stamp on it and

inter-operating.

However I can have my own versions of OSPF probably with a different=20
version number within
my network  "only to process anycasting". Probably because anycasting is

bursty.

Precisely the new AOSPF draft does that and there is nothing wrong with=20
it. Tell me what is

wrong in this requirement ?

Thanks,
Abhay










Acee Lindem wrote:
> Abhay,
>
> Abhay D.S wrote:
>> hi acee,
>> With due respect to your disposition, the Anycast draft is a NSF=20
>> grant project
>> and it makes a good implementation, as good as OSPFv3 anycast=20
>> capability.
> On what technical grounds do you based this statement? I don't see any

> reason
> to handle anycast addresses any differently from any other /128
prefix.
>
>> The authors are definitely, trying out to reach people with other=20
>> perspectives which is
>> probably different from ours.
>> Hope you take positive criticism positively.
> Well that doesn't change the fact that protocol extensions are not=20
> automatically
> accepted by the OSPF WG.
>
> Acee
>
>> Period.
>> Thanks,
>> Abhay
>>
>>
>>
>>
>> Acee Lindem wrote:
>>> Abhay,
>>>
>>> Abhay D.S wrote:
>>>> hi acee,
>>>> Not very positive and encouraging, being on a WG chair.
>>> I clearly stated I was speaking a WG member and have just
>>> as much right as anyone else to state my opinion as to whether or
>>> not a specific piece of work is accepted by the WG. If you have
>>> technical comments related to the draft as opposed to critiques of
>>> character, I'd encourage you to share them.
>>>
>>> Thanks,
>>> Acee
>>>
>>>> It reminds me of  folks at the ATM forum in the past !!
>>>> Thanks,
>>>> Abhay
>>>>
>>>>
>>>>
>>>> Acee Lindem wrote:
>>>>> Speaking as a WG Member and author of the RFC 2740 respin:
>>>>>
>>>>> My opinion is that the protocol extensions described in the draft
>>>>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>>>>> update) already can support anycast addresses as /128 prefixes.
>>>>> One simply uses the lowest cost path. Note that the protocol
>>>>> already support configuration of host routes as described in
appendix
>>>>> C.7.
>>>>>
>>>>> Thanks,
>>>>> Acee
>>>>>
>>>>> Acee Lindem wrote:
>>>>>> Speaking as WG Chair:
>>>>>>
>>>>>> I'd like to initiate discussion on this draft so that we can let=20
>>>>>> the authors
>>>>>> know whether the WG wants to presue it furthers.
>>>>>>
>>>>>> Thanks,
>>>>>> Acee
>>>>>>
>>>>>> Yue Wang wrote:
>>>>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>>>>   a routing protocol which extends OSPFv3 to support anycast,
which
>>>>>>>   we implemented and tested successfully in our IPv6 test bed.
And
>>>>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>>>>
>>>>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> OSPF mailing list
>>>>>> OSPF@ietf.org
>>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> OSPF mailing list
>>>>> OSPF@ietf.org
>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>
>>>>>
>>>
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>
>>>
>
>

_______________________________________________
OSPF mailing list
OSPF@ietf.org
https://www1.ietf.org/mailman/listinfo/ospf



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Hi Greg,
Greg Mirsky wrote:
> Dear Abhay,
> I apologize for non-technical post below.
> If an operator agrees with running someone's proprietary protocol would
> operator care about IETF's and OSPF WG's seal of approval? But if such
> seal is required then it's up to the group to decide whther to put it
> down or not. Would you agree?
> Any group can use any grant to re-work any existing interoperable
> implementation to make it "different". And probably it will be fun and
> educational experience to the group. Should OSPF WG or IETF as whole be
> involved in such projects?
>   
Dependent on WG bandwidth, we could allow extensions to be documented as
experimental RFCs (let's ignore the statement about a separate version 
number below :^).
However, the WG would still need to agree the to accept the draft as a 
viable
solution to an accepted problem. In this case, my opinion is that this 
draft shouldn't
be accepted by the WG.

Thanks,
Acee

> 	Regards,
> 		Greg
>
> -----Original Message-----
> From: Abhay D.S [mailto:abhayds@acm.org] 
> Sent: Wednesday, December 13, 2006 3:30 AM
> To: Acee Lindem
> Cc: OSPF@ietf.org
> Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
>
> hi acee,
>
> We use OSPF as a TOOL which can be programmed for various styles.
>
> For example:
>
> I want one version of OSPFv3 version running WG approved stamp on it and
>
> inter-operating.
>
> However I can have my own versions of OSPF probably with a different 
> version number within
> my network  "only to process anycasting". Probably because anycasting is
>
> bursty.
>
> Precisely the new AOSPF draft does that and there is nothing wrong with 
> it. Tell me what is
>
> wrong in this requirement ?
>
> Thanks,
> Abhay
>
>
>
>
>
>
>
>
>
>
> Acee Lindem wrote:
>   
>> Abhay,
>>
>> Abhay D.S wrote:
>>     
>>> hi acee,
>>> With due respect to your disposition, the Anycast draft is a NSF 
>>> grant project
>>> and it makes a good implementation, as good as OSPFv3 anycast 
>>> capability.
>>>       
>> On what technical grounds do you based this statement? I don't see any
>>     
>
>   
>> reason
>> to handle anycast addresses any differently from any other /128
>>     
> prefix.
>   
>>> The authors are definitely, trying out to reach people with other 
>>> perspectives which is
>>> probably different from ours.
>>> Hope you take positive criticism positively.
>>>       
>> Well that doesn't change the fact that protocol extensions are not 
>> automatically
>> accepted by the OSPF WG.
>>
>> Acee
>>
>>     
>>> Period.
>>> Thanks,
>>> Abhay
>>>
>>>
>>>
>>>
>>> Acee Lindem wrote:
>>>       
>>>> Abhay,
>>>>
>>>> Abhay D.S wrote:
>>>>         
>>>>> hi acee,
>>>>> Not very positive and encouraging, being on a WG chair.
>>>>>           
>>>> I clearly stated I was speaking a WG member and have just
>>>> as much right as anyone else to state my opinion as to whether or
>>>> not a specific piece of work is accepted by the WG. If you have
>>>> technical comments related to the draft as opposed to critiques of
>>>> character, I'd encourage you to share them.
>>>>
>>>> Thanks,
>>>> Acee
>>>>
>>>>         
>>>>> It reminds me of  folks at the ATM forum in the past !!
>>>>> Thanks,
>>>>> Abhay
>>>>>
>>>>>
>>>>>
>>>>> Acee Lindem wrote:
>>>>>           
>>>>>> Speaking as a WG Member and author of the RFC 2740 respin:
>>>>>>
>>>>>> My opinion is that the protocol extensions described in the draft
>>>>>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>>>>>> update) already can support anycast addresses as /128 prefixes.
>>>>>> One simply uses the lowest cost path. Note that the protocol
>>>>>> already support configuration of host routes as described in
>>>>>>             
> appendix
>   
>>>>>> C.7.
>>>>>>
>>>>>> Thanks,
>>>>>> Acee
>>>>>>
>>>>>> Acee Lindem wrote:
>>>>>>             
>>>>>>> Speaking as WG Chair:
>>>>>>>
>>>>>>> I'd like to initiate discussion on this draft so that we can let 
>>>>>>> the authors
>>>>>>> know whether the WG wants to presue it furthers.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Acee
>>>>>>>
>>>>>>> Yue Wang wrote:
>>>>>>>               
>>>>>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>>>>>   a routing protocol which extends OSPFv3 to support anycast,
>>>>>>>>                 
> which
>   
>>>>>>>>   we implemented and tested successfully in our IPv6 test bed.
>>>>>>>>                 
> And
>   
>>>>>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>>>>>
>>>>>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>>>>>
>>>>>>>>
>>>>>>>>                 
>>>>>>> _______________________________________________
>>>>>>> OSPF mailing list
>>>>>>> OSPF@ietf.org
>>>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>>>
>>>>>>>               
>>>>>> _______________________________________________
>>>>>> OSPF mailing list
>>>>>> OSPF@ietf.org
>>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>>
>>>>>>
>>>>>>             
>>>> _______________________________________________
>>>> OSPF mailing list
>>>> OSPF@ietf.org
>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>
>>>>
>>>>         
>>     
>
>   

_______________________________________________
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> However I can have my own versions of OSPF probably with a different
> version number within
> my network  "only to process anycasting". Probably because anycasting is
> bursty.

Is anycast traffic bursty, or are the anycast routing updates bursty? If
the traffic, then OSPF doesn't really care, I don't think (?). If the
updates, then we could segregate the anycast updates into a separate
topology, perhaps, so we don't have to go so far as to have multiple
processes.

If multiple processes is the answer required, then why not approach the
problem from the perspective of "how do I get multiple process to work
across a single link," rather than specifically referring to anycast.
Generalizing the problem would be better, since a single solution might
fit more problems than just anycast....

Anyway, as it's written, I stand by my statement that this draft doesn't
fit, now. Perhaps if we break the problem down more, we can come up with
something that will fit.

:-)

Russ

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From ospf-bounces@ietf.org Wed Dec 13 21:19:49 2006
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Date: Thu, 14 Dec 2006 10:13:41 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
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   dear all,
To conclude the discussion on this:

With due respect to your area of focus,values and limitations in WG.

I am sure you  might have come across proprietary versions of OSPF
are still  used in some big commercial  networks, with a separate 
version numbers.

Some OSPF versions were extended to an extent that they could exchange 
MPLS or Layer 2
labels !!

See, it is only about "Vision", and this vision is shared by people 
outside WG and I think WG is good
but it is still NOT the best.

Acee: It is appreciated if WG could accept all valid variations OSPF 
specs as experimental and bubble
it up slowly to standardization.

Thanks,
Abhay




Acee Lindem wrote:
> Hi Greg,
> Greg Mirsky wrote:
>> Dear Abhay,
>> I apologize for non-technical post below.
>> If an operator agrees with running someone's proprietary protocol would
>> operator care about IETF's and OSPF WG's seal of approval? But if such
>> seal is required then it's up to the group to decide whther to put it
>> down or not. Would you agree?
>> Any group can use any grant to re-work any existing interoperable
>> implementation to make it "different". And probably it will be fun and
>> educational experience to the group. Should OSPF WG or IETF as whole be
>> involved in such projects?
>>   
> Dependent on WG bandwidth, we could allow extensions to be documented as
> experimental RFCs (let's ignore the statement about a separate version 
> number below :^).
> However, the WG would still need to agree the to accept the draft as a 
> viable
> solution to an accepted problem. In this case, my opinion is that this 
> draft shouldn't
> be accepted by the WG.
>
> Thanks,
> Acee
>
>>     Regards,
>>         Greg
>>
>> -----Original Message-----
>> From: Abhay D.S [mailto:abhayds@acm.org] Sent: Wednesday, December 
>> 13, 2006 3:30 AM
>> To: Acee Lindem
>> Cc: OSPF@ietf.org
>> Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
>>
>> hi acee,
>>
>> We use OSPF as a TOOL which can be programmed for various styles.
>>
>> For example:
>>
>> I want one version of OSPFv3 version running WG approved stamp on it and
>>
>> inter-operating.
>>
>> However I can have my own versions of OSPF probably with a different 
>> version number within
>> my network  "only to process anycasting". Probably because anycasting is
>>
>> bursty.
>>
>> Precisely the new AOSPF draft does that and there is nothing wrong 
>> with it. Tell me what is
>>
>> wrong in this requirement ?
>>
>> Thanks,
>> Abhay
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Acee Lindem wrote:
>>  
>>> Abhay,
>>>
>>> Abhay D.S wrote:
>>>    
>>>> hi acee,
>>>> With due respect to your disposition, the Anycast draft is a NSF 
>>>> grant project
>>>> and it makes a good implementation, as good as OSPFv3 anycast 
>>>> capability.
>>>>       
>>> On what technical grounds do you based this statement? I don't see any
>>>     
>>
>>  
>>> reason
>>> to handle anycast addresses any differently from any other /128
>>>     
>> prefix.
>>  
>>>> The authors are definitely, trying out to reach people with other 
>>>> perspectives which is
>>>> probably different from ours.
>>>> Hope you take positive criticism positively.
>>>>       
>>> Well that doesn't change the fact that protocol extensions are not 
>>> automatically
>>> accepted by the OSPF WG.
>>>
>>> Acee
>>>
>>>    
>>>> Period.
>>>> Thanks,
>>>> Abhay
>>>>
>>>>
>>>>
>>>>
>>>> Acee Lindem wrote:
>>>>      
>>>>> Abhay,
>>>>>
>>>>> Abhay D.S wrote:
>>>>>        
>>>>>> hi acee,
>>>>>> Not very positive and encouraging, being on a WG chair.
>>>>>>           
>>>>> I clearly stated I was speaking a WG member and have just
>>>>> as much right as anyone else to state my opinion as to whether or
>>>>> not a specific piece of work is accepted by the WG. If you have
>>>>> technical comments related to the draft as opposed to critiques of
>>>>> character, I'd encourage you to share them.
>>>>>
>>>>> Thanks,
>>>>> Acee
>>>>>
>>>>>        
>>>>>> It reminds me of  folks at the ATM forum in the past !!
>>>>>> Thanks,
>>>>>> Abhay
>>>>>>
>>>>>>
>>>>>>
>>>>>> Acee Lindem wrote:
>>>>>>          
>>>>>>> Speaking as a WG Member and author of the RFC 2740 respin:
>>>>>>>
>>>>>>> My opinion is that the protocol extensions described in the draft
>>>>>>> are completely unnecessary and the OSPFv3 (RFC 2740 and its
>>>>>>> update) already can support anycast addresses as /128 prefixes.
>>>>>>> One simply uses the lowest cost path. Note that the protocol
>>>>>>> already support configuration of host routes as described in
>>>>>>>             
>> appendix
>>  
>>>>>>> C.7.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Acee
>>>>>>>
>>>>>>> Acee Lindem wrote:
>>>>>>>            
>>>>>>>> Speaking as WG Chair:
>>>>>>>>
>>>>>>>> I'd like to initiate discussion on this draft so that we can 
>>>>>>>> let the authors
>>>>>>>> know whether the WG wants to presue it furthers.
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Acee
>>>>>>>>
>>>>>>>> Yue Wang wrote:
>>>>>>>>              
>>>>>>>>> This document describes AOSPF (Anycast Extensions to OSPFv3),
>>>>>>>>>   a routing protocol which extends OSPFv3 to support anycast,
>>>>>>>>>                 
>> which
>>  
>>>>>>>>>   we implemented and tested successfully in our IPv6 test bed.
>>>>>>>>>                 
>> And
>>  
>>>>>>>>>   the performance analysis shows the overhead of AOSPF is low.
>>>>>>>>>
>>>>>>>>> http://www.ietf.org/internet-drafts/draft-wang-aospf-00.txt
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>                 
>>>>>>>> _______________________________________________
>>>>>>>> OSPF mailing list
>>>>>>>> OSPF@ietf.org
>>>>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>>>>
>>>>>>>>               
>>>>>>> _______________________________________________
>>>>>>> OSPF mailing list
>>>>>>> OSPF@ietf.org
>>>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>>>
>>>>>>>
>>>>>>>             
>>>>> _______________________________________________
>>>>> OSPF mailing list
>>>>> OSPF@ietf.org
>>>>> https://www1.ietf.org/mailman/listinfo/ospf
>>>>>
>>>>>
>>>>>         
>>>     
>>
>>   
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>
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From ospf-bounces@ietf.org Wed Dec 13 21:28:38 2006
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Date: Thu, 14 Dec 2006 10:26:10 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00
In-reply-to: <45803C1F.5060805@cisco.com>
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hi Russ,
No draft fits perfect, hence the WG existence.

Generalizing has more general problems to solve.

Limiting the scope of operation of important but insignificant anycast 
processing
narrows down possible issues.(Actually none as of now)

To be exact all WG members acceptance and rejection criteria should rise 
above
all the ignorance.

As you rightly said, perphaps break the problem down more, if WG has 
different agenda,
it might allow others to break problem down more and accept solutions.

Thanks and Regards,
Abhay

Russ White wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
>   
>> However I can have my own versions of OSPF probably with a different
>> version number within
>> my network  "only to process anycasting". Probably because anycasting is
>> bursty.
>>     
>
> Is anycast traffic bursty, or are the anycast routing updates bursty? If
> the traffic, then OSPF doesn't really care, I don't think (?). If the
> updates, then we could segregate the anycast updates into a separate
> topology, perhaps, so we don't have to go so far as to have multiple
> processes.
>
> If multiple processes is the answer required, then why not approach the
> problem from the perspective of "how do I get multiple process to work
> across a single link," rather than specifically referring to anycast.
> Generalizing the problem would be better, since a single solution might
> fit more problems than just anycast....
>
> Anyway, as it's written, I stand by my statement that this draft doesn't
> fit, now. Perhaps if we break the problem down more, we can come up with
> something that will fit.
>
> :-)
>
> Russ
>
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hi Russ,<br>
No draft fits perfect, hence the WG existence.<br>
<br>
Generalizing has more general problems to solve.<br>
<br>
Limiting the scope of operation of important but insignificant anycast
processing<br>
narrows down possible issues.(Actually none as of now)<br>
<br>
To be exact all WG members acceptance and rejection criteria should
rise above<br>
all the ignorance. <br>
<br>
As you rightly said, perphaps break the problem down more, if WG has
different agenda,<br>
it might allow others to break problem down more and accept solutions.<br>
<br>
Thanks and Regards,<br>
Abhay<br>
<br>
Russ White wrote:
<blockquote cite="mid45803C1F.5060805@cisco.com" type="cite">
  <pre wrap="">-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


  </pre>
  <blockquote type="cite">
    <pre wrap="">However I can have my own versions of OSPF probably with a different
version number within
my network  "only to process anycasting". Probably because anycasting is
bursty.
    </pre>
  </blockquote>
  <pre wrap=""><!---->
Is anycast traffic bursty, or are the anycast routing updates bursty? If
the traffic, then OSPF doesn't really care, I don't think (?). If the
updates, then we could segregate the anycast updates into a separate
topology, perhaps, so we don't have to go so far as to have multiple
processes.

If multiple processes is the answer required, then why not approach the
problem from the perspective of "how do I get multiple process to work
across a single link," rather than specifically referring to anycast.
Generalizing the problem would be better, since a single solution might
fit more problems than just anycast....

Anyway, as it's written, I stand by my statement that this draft doesn't
fit, now. Perhaps if we break the problem down more, we can come up with
something that will fit.

:-)

Russ

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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00 
Date: Wed, 13 Dec 2006 23:27:41 -0500
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I don't feel that there is any need for this draft.  IMO it should not
be adopted as a WG item.

Curtis

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From plotkineub@designing-solutions.com Thu Dec 14 11:51:38 2006
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From: "Liane" <plotkineub@designing-solutions.com>
To: "Joana Lewis" <ospf-archive@lists.ietf.org>
Subject: Might like this
Date: Thu, 14 Dec 2006 17:51:33 +0100
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and dead leaves,' added jo, with a sigh; for lifesocrates is mentioned by =
plato 8 as having employedsomething for you," he said; and when she stood
the gump alighted safely in this very courtyard,who would love it for her =
sake. she was sorryas all work and no play."
maud, wiping her eyes.
muttered uncle mac; and then the gentlemen"but, my deary, you'll get so =
tiredout. i walk in my sleep sometimes, hester,and i don't deserve to =
have them, but i'd
which had come over her.poor little mamma, clutching her last inchapter =
was just finished, when the sound
and a body which i venture to say would make
and a body which i venture to say would makejokes that meant mischief. =
for heaven's sake,little cake with sugar on it."sure of that," said mrs. =
wilkins cheerily,
love."sort. i think it is beginning to simmer already,   b: no, i've
that invisible barrier which stands between
that bab put down the pail and stepped back,farming project. a little =
polish would makeon immense trumpets; the twenty- four prancingand i =
shall yet be proud of him, whether
studied for more than five years.myself or to anyone else." evidently =
ashamed of himself; but his temper
why she didn't take all her pretty things
accepted an honorable post therein. the paternalevidently the munchkins =
were good farmersfor a time.old friends with what mr bhaer called a =
'feeling-full'
the complaining stairs and ushered her into. . .scrub while mrs. moss set =
a stitch here and there in the new old clothes; and
mac watched
she found fanny enduringwon't suffer, for traveling nowadays is almost as =
easy as sitting in a chair.""yes, indeed;nothing but chowder would have =
lured them from their
if she had twenty lovers she would send them all; and then made =
preparationsabout us as ef they 'd nothin' else to do. i was dishin' up =
dinner, feelin''dreaming dreams, dan=3F' she asked, thinking
feet.
"oztable did, and she was just thinking, with a sly smiletempted him to =
point his smooth speech with a taunt, or offer a silent insult
and rushed away to the kitchen, just as she was. phebe was there, =
polishingf: i can cook fancy dishes. "that's perfectly sweet! mine isn't; =
but i meant it to be funny," saidsmall,only knew which she liked best, =
and supposed it was merely another of her "old-fashioned"
nothing but chowder would have lured them from theirwith us=3Fwas so =
charmed with them, that she was with difficulty recalled to
"he looked like a grasshopper inabout that time, for the new friendship =
flourished like grass in spring.only salvation was trying to fix her =
attention upon uncle mac a portly,all stained with it. we'll bleach him =
out, and his curls will grow,

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<BR>and dead leaves,' added jo, with a sigh; for lifesocrates is =
mentioned by plato 8 as having employedsomething for you," he said; and =
when she stood<BR>
the gump alighted safely in this very courtyard,&nbsp;&nbsp;who would =
love it for her sake. she was sorry&nbsp;&nbsp;as all work and no =
play."<BR>
maud, wiping her =
eyes.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>muttered uncle mac; and then the gentlemen"but, my deary, you'll get =
so tiredout. i walk in my sleep sometimes, hester,and i don't deserve to =
have them, but i'd<BR>
which had come over her.&nbsp;&nbsp;poor little mamma, clutching her last =
in&nbsp;&nbsp;chapter was just finished, when the sound<BR>
and a body which i venture to say would =
make&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>and a body which i venture to say would makejokes that meant =
mischief. for heaven's sake,little cake with sugar on it."sure of that," =
said mrs. wilkins cheerily,<BR>
love."&nbsp;&nbsp;sort. i think it is beginning to simmer =
already,&nbsp;&nbsp;   b: no, i've<BR>
that invisible barrier which stands =
between&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>that bab put down the pail and stepped back,farming project. a little =
polish would makeon immense trumpets; the twenty- four prancingand i =
shall yet be proud of him, whether<BR>
studied for more than five years.&nbsp;&nbsp;myself or to anyone else." =
&nbsp;&nbsp;evidently ashamed of himself; but his temper<BR>
why she didn't take all her pretty =
things&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
accepted an honorable post therein. the paternalevidently the munchkins =
were good farmersfor a time.old friends with what mr bhaer called a =
'feeling-full'<BR>
the complaining stairs and ushered her into&nbsp;&nbsp;. . =
&nbsp;&nbsp;scrub while mrs. moss set a stitch here and there in the new =
old clothes; and<BR>
mac watched&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
she found fanny enduringwon't suffer, for traveling nowadays is almost as =
easy as sitting in a chair."&nbsp;&nbsp;&nbsp;&nbsp;"yes, indeed;nothing =
but chowder would have lured them from their&nbsp;&nbsp;
if she had twenty lovers she would send them all; and then made =
preparations<BR>about us as ef they 'd nothin' else to do. i was dishin' =
up dinner, feelin'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'dreaming dreams, dan=3F' =
she asked, thinking&nbsp;&nbsp;
feet.&nbsp;&nbsp;&nbsp;&nbsp;<BR>
"oztable did, and she was just thinking, with a sly =
smile&nbsp;&nbsp;&nbsp;&nbsp;tempted him to point his smooth speech with =
a taunt, or offer a silent insult&nbsp;&nbsp;<BR>
and rushed away to the kitchen, just as she was. phebe was there, =
polishingf: i can cook fancy dishes. &nbsp;&nbsp;"that's perfectly sweet! =
mine isn't; but i meant it to be funny," said&nbsp;small,&nbsp;&nbsp;only =
knew which she liked best, and supposed it was merely another of her =
"old-fashioned"
nothing but chowder would have lured them from theirwith =
us=3F&nbsp;&nbsp;&nbsp;&nbsp;was so charmed with them, that she was with =
difficulty recalled to<BR>
"he looked like a grasshopper inabout that time, for the new friendship =
flourished like grass in spring.&nbsp;&nbsp;&nbsp;only salvation was =
trying to fix her attention upon uncle mac a portly,all stained with it. =
we'll bleach him out, and his curls will grow,
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From ospf-bounces@ietf.org Thu Dec 14 14:21:28 2006
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Date: Thu, 14 Dec 2006 14:20:33 -0500
From: Acee Lindem <acee@cisco.com>
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Subject: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00 - Technical
	Considerations
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We've had a lot of discussion on the openness of the WG to new
proposals. I'd like to now focus specifically on the technical
aspects of this draft and as to why I don't think it necessary or
should become a WG document.

   Section 3.2 - I see this prefix checking not only as unnecessary but
   also contrary to the OSPFv3 design point that it runs a link as opposed
   to a subnet. Furthermore, I'd expect anycast services to be accessible
   via  /128 loopbacks on servers rather than an address bounded by
   a specific IPv6 prefix.

   Section 3.3 - This can be done for /128 unicast addresses with 
overlapping
   ranges (which is part of the base OSPFv3).

   Section 3.4 - An implementation can advertise or withdraw a /128 unicast
   prefix when the anycast addresss is learned or found to be unreachable.
  
   Section 3.5 - One can use the shortest path to a /128 unicast prefix just
   as well without any changes to OSPFv3.

     - The backup route handling in 3.5.1 is only needed if one can't do
        an SPF (or incremental SPF) fast enough. In any case, this 
requirement
        isn't specific to anycast addresses and we should not come up 
with a
        partial solution just for anycast addresses  This section 
certainly doesn't
        cover all the cases but rather than go there I'd direct you to 
the work
        on IPFRR being done in the RTG WG.

     - If I read Section 3.5 correctly, it implies that the OSPF 
precedence should
       be ignored and the closest route should be preferred for anycast 
irrespective
       of type. I find changing this age-old OSPF design point for a 
particular type
       of prefix egregious.. If you want this behavior within an OSPF 
domain, simply
       advertise all your anycast addresses as  Type 1 AS external /128 
prefixes and
       you're done.

Thanks,
Acee

>   

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	Considerations
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


>     - The backup route handling in 3.5.1 is only needed if one can't do
>        an SPF (or incremental SPF) fast enough. In any case, this
> requirement
>        isn't specific to anycast addresses and we should not come up with a
>        partial solution just for anycast addresses  This section
> certainly doesn't
>        cover all the cases but rather than go there I'd direct you to
> the work
>        on IPFRR being done in the RTG WG.

Or if you can't hold two leaves, with the second being a backup for
immediate install in the routing table. In short there are a ton of
options here, we don't need to prescribe one in a draft.

>     - If I read Section 3.5 correctly, it implies that the OSPF
> precedence should
>       be ignored and the closest route should be preferred for anycast
> irrespective
>       of type. I find changing this age-old OSPF design point for a
> particular type
>       of prefix egregious.. If you want this behavior within an OSPF
> domain, simply
>       advertise all your anycast addresses as  Type 1 AS external /128
> prefixes and
>       you're done.

In fact, this is worse than "why should we change this." Changing this
can actually result in routing loops, if not all the routers in the area
are preferring routes based in this way. You'd have to present some
fairly strong advantages to be convincing about changes in route preference.

:-)

Russ
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Date: Fri, 15 Dec 2006 11:11:17 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00 - Technical
	Considerations
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hi acee,

Acee Lindem wrote:
> We've had a lot of discussion on the openness of the WG to new
> proposals. I'd like to now focus specifically on the technical
> aspects of this draft and as to why I don't think it necessary or
> should become a WG document.
>
>   Section 3.2 - I see this prefix checking not only as unnecessary but
>   also contrary to the OSPFv3 design point that it runs a link as opposed
>   to a subnet. Furthermore, I'd expect anycast services to be accessible
>   via  /128 loopbacks on servers rather than an address bounded by
>   a specific IPv6 prefix.
I would read it as a hierarchy within OSPFv3 for anycasting.
>
>   Section 3.3 - This can be done for /128 unicast addresses with 
> overlapping
>   ranges (which is part of the base OSPFv3).
>
How about  only anycast aggregation option ?.
>   Section 3.4 - An implementation can advertise or withdraw a /128 
> unicast
>   prefix when the anycast addresss is learned or found to be unreachable.
>  
If it were aggregated then the aggegrate still might exist !.

>   Section 3.5 - One can use the shortest path to a /128 unicast prefix 
> just
>   as well without any changes to OSPFv3.
>
>     - The backup route handling in 3.5.1 is only needed if one can't do
>        an SPF (or incremental SPF) fast enough. In any case, this 
> requirement
>        isn't specific to anycast addresses and we should not come up 
> with a
>        partial solution just for anycast addresses  This section 
> certainly doesn't
>        cover all the cases but rather than go there I'd direct you to 
> the work
>        on IPFRR being done in the RTG WG.
>
They want to do it in a different way, since look at SPF tree from far. 
Actually the SPF
tree has not changed here. Only the address has been changed. It means 
holding a route
cache for upto 5 next hops and immediately choose another instead of 
re-doing calculation.
>     - If I read Section 3.5 correctly, it implies that the OSPF 
> precedence should
>       be ignored and the closest route should be preferred for anycast 
> irrespective
>       of type. I find changing this age-old OSPF design point for a 
> particular type
>       of prefix egregious.. If you want this behavior within an OSPF 
> domain, simply
>       advertise all your anycast addresses as  Type 1 AS external /128 
> prefixes and
>       you're done.
>
> Thanks,
> Acee
>
>>   
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf
>
>

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n:Rao;Abhay 
email;internet:abhayds@acm.org
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_______________________________________________
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From: Acee Lindem <acee@cisco.com>
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Subject: Re: [OSPF] Anycast Extension to OSPFv3 draft-wang-aospf-00 - Technical
	Considerations
References: <200612140427.kBE4RfSL031657@workhorse.brookfield.occnc.com>
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Hi Abhay,
Abhay D.S wrote:
> hi acee,
>
> Acee Lindem wrote:
>> We've had a lot of discussion on the openness of the WG to new
>> proposals. I'd like to now focus specifically on the technical
>> aspects of this draft and as to why I don't think it necessary or
>> should become a WG document.
>>
>>   Section 3.2 - I see this prefix checking not only as unnecessary but
>>   also contrary to the OSPFv3 design point that it runs a link as 
>> opposed
>>   to a subnet. Furthermore, I'd expect anycast services to be accessible
>>   via  /128 loopbacks on servers rather than an address bounded by
>>   a specific IPv6 prefix.
> I would read it as a hierarchy within OSPFv3 for anycasting.
I'd like to hear from the authors what value this adds.
>>
>>   Section 3.3 - This can be done for /128 unicast addresses with 
>> overlapping
>>   ranges (which is part of the base OSPFv3).
>>
> How about  only anycast aggregation option ?.
If you treat anycast prefixes the same as unicast this is not needed.

>>   Section 3.4 - An implementation can advertise or withdraw a /128 
>> unicast
>>   prefix when the anycast addresss is learned or found to be 
>> unreachable.
>>  
> If it were aggregated then the aggegrate still might exist !.
Only if there are other prefixes in the range (or a bug :^).

>
>>   Section 3.5 - One can use the shortest path to a /128 unicast 
>> prefix just
>>   as well without any changes to OSPFv3.
>>
>>     - The backup route handling in 3.5.1 is only needed if one can't do
>>        an SPF (or incremental SPF) fast enough. In any case, this 
>> requirement
>>        isn't specific to anycast addresses and we should not come up 
>> with a
>>        partial solution just for anycast addresses  This section 
>> certainly doesn't
>>        cover all the cases but rather than go there I'd direct you to 
>> the work
>>        on IPFRR being done in the RTG WG.
>>
> They want to do it in a different way, since look at SPF tree from 
> far. Actually the SPF
> tree has not changed here. Only the address has been changed. It means 
> holding a route
> cache for upto 5 next hops and immediately choose another instead of 
> re-doing calculation.
Aside from not seeing the reason for a limited scope solution, I don't see
the need to document the precise implementation.

Thanks,
Acee


>>     - If I read Section 3.5 correctly, it implies that the OSPF 
>> precedence should
>>       be ignored and the closest route should be preferred for 
>> anycast irrespective
>>       of type. I find changing this age-old OSPF design point for a 
>> particular type
>>       of prefix egregious.. If you want this behavior within an OSPF 
>> domain, simply
>>       advertise all your anycast addresses as  Type 1 AS external 
>> /128 prefixes and
>>       you're done.
>>
>> Thanks,
>> Acee
>>
>>>   
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www1.ietf.org/mailman/listinfo/ospf
>>
>>

_______________________________________________
OSPF mailing list
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From ospf-bounces@ietf.org Fri Dec 15 06:37:02 2006
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	<ccamp@ops.ietf.org>
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Subject: [OSPF] Further short CCAMP WG Last Call on
	draft-ietf-ccamp-te-node-cap-03.txt 
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Hi,

Sorry, I fumbled this.

Jean-Louis made some significant changes after we completed the working 
group last call. He took on board the comments from CCAMP, ISIS and OSPF and 
made the changes that he describes below.

Since one of these changes is relatively substantial (the conflation of two 
bit-fields into one) I want to give everyone a chance to comment before we 
go forward to the ADs.

So, there is a one week last call running on the CCAMP mailing list until 
noon GMT 22nd December 2006.

Thanks,
Adrian

----- Original Message ----- 
From: "LE ROUX Jean-Louis RD-CORE-LAN" <jeanlouis.leroux@orange-ftgroup.com>
To: <ccamp@ops.ietf.org>
Sent: Wednesday, November 22, 2006 7:25 AM
Subject: RE: I-D ACTION:draft-ietf-ccamp-te-node-cap-03.txt


Hi all,

This new version accounts for comments received during the CCAMP ISIS and 
OSPF WG last call.

Here are the main changes:

-The data plane and control plane cap sub-TLVs have been removed. The 
capabilities are now carried directly with the TE Node Capability Descriptor 
TLV, and there is a single registry for both control and data plane 
capabilities.

-In section 5:
"other occurences MUST be discarded" replaced by "other occurrences MUST be 
ignored"

-In section 6:
"a router not supporting the TE Node Capability Descriptor TLV MUST just 
silently ignore the TLV"
Replaced by: "a router not supporting the TE Node Capability Descriptor TLV 
will just silently ignore the TLV"

Regards,

JL

> -----Message d'origine-----
> De : owner-ccamp@ops.ietf.org
> [mailto:owner-ccamp@ops.ietf.org] De la part de
> Internet-Drafts@ietf.org
> Envoyé : mardi 21 novembre 2006 21:50
> À : i-d-announce@ietf.org
> Cc : ccamp@ops.ietf.org
> Objet : I-D ACTION:draft-ietf-ccamp-te-node-cap-03.txt
>
> A New Internet-Draft is available from the on-line
> Internet-Drafts directories.
> This draft is a work item of the Common Control and
> Measurement Plane Working Group of the IETF.
>
> Title : IGP Routing Protocol Extensions for
> Discovery of Traffic Engineering  Node Capabilities
> Author(s) : J. Vasseur, et al.
> Filename : draft-ietf-ccamp-te-node-cap-03.txt
> Pages : 13
> Date : 2006-11-21
>
> It is highly desired in several cases, to take into account Traffic
>    Engineering (TE) node capabilities during Multi Protocol Label
>    Switching (MPLS) and Generalized MPLS (GMPLS) Traffic Engineered
>    Label Switched Path (TE-LSP)  selection, such as for instance the
>    capability to act as a branch Label Switching Router (LSR) of a
>    Point-To-MultiPoint (P2MP) LSP. This requires advertising these
>    capabilities within the Interior Gateway Protocol (IGP). For that
>    purpose, this document specifies Open Shortest Path First
> (OSPF) and
>    Intermediate System-Intermediate System (IS-IS) traffic
> engineering
>    extensions for the advertisement of control plane and data plane
>    traffic engineering node capabilities.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-ccamp-te-node-cap-03.txt



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Subject: [OSPF] RE: [Isis-wg] Further short CCAMP WG Last Call
	ondraft-ietf-ccamp-te-node-cap-03.txt 
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1)The use of TLV and sub-TLV is not consistent throughout the document =
regarding IS-IS. For example, in the second and third paragraphs of =
Section 4.2:

   The IS-IS TE Node Capability Descriptor TLV is carried within an IS-
   IS CAPABILITY TLV which is defined in [OSPF-CAP].

   The format of the IS-IS TE Node Capability sub-TLV is the same as the =

   TLV format used by the Traffic Engineering Extensions to IS-IS=20
   [RFC3784]. That is, the TLV is composed of 1 octet for the type, 1=20
   octet specifying the TLV length and a value field.

"TLV" should be "sub-TLV" in all cases except when referring to the =
IS-IS CAPABILITY TLV.
Also [OSPF-CAP] should be [IS-IS-CAP]

Similar changes needed in Section 5.2 and some other places.

2)In Section 5.2:

   The TE Node Capability Descriptor TLV is OPTIONAL and MUST NOT appear =

   more than once in an ISIS Router Capability TLV. If a TE Node=20
   Capability Descriptor TLV appears more than once in an ISIS=20
   Capability TLV, only the first occurrence MUST be processed, other=20
   occurrences MUST be ignored.

I would prefer that the second sentence be omitted - for reasons that =
have been discussed in the context of the PCE draft - I have repeated =
the relevant comments here:

<snip>
In cases where a TLV may move from one LSP fragment to another (for
example because of the addition of information which exceeds the
carrying capacity of the original LSP fragment) a router may have
multiple copies of the same TLV as a transient condition. It is
impossible to know which of the copies is newer and therefore impossible
to deterministically decide which is the first instance of a subTLV. So
it is better to leave the behavior in this case as undefined.
<end snip>

   Les


> -----Original Message-----
> From: Adrian Farrel [mailto:adrian@olddog.co.uk]
> Sent: Friday, December 15, 2006 3:33 AM
> To: LE ROUX Jean-Louis RD-CORE-LAN; ccamp@ops.ietf.org
> Cc: ospf@ietf.org; isis-wg@ietf.org
> Subject: [Isis-wg] Further short CCAMP WG Last Call =
ondraft-ietf-ccamp-te-
> node-cap-03.txt
>=20
> Hi,
>=20
> Sorry, I fumbled this.
>=20
> Jean-Louis made some significant changes after we completed the =
working
> group last call. He took on board the comments from CCAMP, ISIS and =
OSPF
> and
> made the changes that he describes below.
>=20
> Since one of these changes is relatively substantial (the conflation =
of
> two
> bit-fields into one) I want to give everyone a chance to comment =
before we
> go forward to the ADs.
>=20
> So, there is a one week last call running on the CCAMP mailing list =
until
> noon GMT 22nd December 2006.
>=20
> Thanks,
> Adrian
>=20
> ----- Original Message -----
> From: "LE ROUX Jean-Louis RD-CORE-LAN" <jeanlouis.leroux@orange-
> ftgroup.com>
> To: <ccamp@ops.ietf.org>
> Sent: Wednesday, November 22, 2006 7:25 AM
> Subject: RE: I-D ACTION:draft-ietf-ccamp-te-node-cap-03.txt
>=20
>=20
> Hi all,
>=20
> This new version accounts for comments received during the CCAMP ISIS =
and
> OSPF WG last call.
>=20
> Here are the main changes:
>=20
> -The data plane and control plane cap sub-TLVs have been removed. The
> capabilities are now carried directly with the TE Node Capability
> Descriptor
> TLV, and there is a single registry for both control and data plane
> capabilities.
>=20
> -In section 5:
> "other occurences MUST be discarded" replaced by "other occurrences =
MUST
> be
> ignored"
>=20
> -In section 6:
> "a router not supporting the TE Node Capability Descriptor TLV MUST =
just
> silently ignore the TLV"
> Replaced by: "a router not supporting the TE Node Capability =
Descriptor
> TLV
> will just silently ignore the TLV"
>=20
> Regards,
>=20
> JL
>=20
> > -----Message d'origine-----
> > De : owner-ccamp@ops.ietf.org
> > [mailto:owner-ccamp@ops.ietf.org] De la part de
> > Internet-Drafts@ietf.org
> > Envoy=E9 : mardi 21 novembre 2006 21:50
> > =C0 : i-d-announce@ietf.org
> > Cc : ccamp@ops.ietf.org
> > Objet : I-D ACTION:draft-ietf-ccamp-te-node-cap-03.txt
> >
> > A New Internet-Draft is available from the on-line
> > Internet-Drafts directories.
> > This draft is a work item of the Common Control and
> > Measurement Plane Working Group of the IETF.
> >
> > Title : IGP Routing Protocol Extensions for
> > Discovery of Traffic Engineering  Node Capabilities
> > Author(s) : J. Vasseur, et al.
> > Filename : draft-ietf-ccamp-te-node-cap-03.txt
> > Pages : 13
> > Date : 2006-11-21
> >
> > It is highly desired in several cases, to take into account Traffic
> >    Engineering (TE) node capabilities during Multi Protocol Label
> >    Switching (MPLS) and Generalized MPLS (GMPLS) Traffic Engineered
> >    Label Switched Path (TE-LSP)  selection, such as for instance the
> >    capability to act as a branch Label Switching Router (LSR) of a
> >    Point-To-MultiPoint (P2MP) LSP. This requires advertising these
> >    capabilities within the Interior Gateway Protocol (IGP). For that
> >    purpose, this document specifies Open Shortest Path First
> > (OSPF) and
> >    Intermediate System-Intermediate System (IS-IS) traffic
> > engineering
> >    extensions for the advertisement of control plane and data plane
> >    traffic engineering node capabilities.
> >
> > A URL for this Internet-Draft is:
> > =
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-te-node-cap-03.txt
>=20
>=20
>=20
> _______________________________________________
> Isis-wg mailing list
> Isis-wg@ietf.org
> https://www1.ietf.org/mailman/listinfo/isis-wg

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Bill, Ross,

I believe the OSPF WG is done with document and it is ready
for AD evaluation. In the last two revisions, I tried to address comments
that we're being made on other draft during the IETF evaluation.

Thanks,
Acee
Acee Lindem wrote:
> We did a WG last call on the 11 version of this document back in October.
> I've updated it with some comments I received offline as well as 
> assuring I
> had addressed issues with other drafts being reviewed by the IESG. Please
> look at the 12 and 13 changes (they are described in Appendix E.12 and 
> E.13.
> If there are no further comments, I will send it to AD for evaluation 
> on December 13th.
> Thanks,
> Acee
>
> _______________________________________________
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This draft was presented in Montreal and there was support for making it
a WG document in San Diego. During the IESG review for 
draft-ietf-ospf-mt-07.txt,
one of the IESG comments was that MIB extensions should either be covered
or specified in a separate document. Does anyone have good reason why 
this should
not be an OSPF WG document? If not, I'm going to have the authors 
re-issue it as
a draft-ietf... document on December 20, 2006.

Thanks,
Acee

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From ospf-bounces@ietf.org Sat Dec 16 06:06:21 2006
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Date: Sat, 16 Dec 2006 19:05:08 +0800
From: "Yue Wang" <yue.l.wang@gmail.com>
To: OSPF@ietf.org, abhayds@acm.org, acee@cisco.com, riw@cisco.com, 
	vishwas.ietf@gmail.com, gmirsky@turinnetworks.com, curtis@occnc.com, 
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Subject: [OSPF] [AOSPF] Anycast Extension to OSPFv3 (draft-wang-aospf-00) -
	Authors' Technical Considerations
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Hello, dear OSPF WG. I am the main author of this draft.


First, I like to talk about the motivation of this draft. IP anycast
is a vision of next generation networks. As IPv6 is not widely used
yet, it is promising for OSPFv3 to provide anycast in future. In my
design, I take the minimalist approach so that vendors will benefit
from anycast immediately.


Second, I describe my technical considerations as follows.

1) Anycast address

My draft followed the definition of IPv6 anycast addresses (see RFC
4291). So there is an address aggregation here.
Besides, it is better to identify anycast addresses from unicast
addresses. For example, we can have new route calculation for anycast
addresses. We can have additional security for anycast addresses as it
is more vulnerable to attackes. This address identification is more
flexible and does not disturb OSPFv3.  So, Why not?


2) Anycast Route Calculation

I agree that the anycast route calculation is similar to the unicast
case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we consider
anycast the same as unicast. The last comer (anycast server) will
replace the previous route entries (in the logic of unicast). As a
result, there is ONLY ONE route entry for a given anycast address.
This means all client requests will go to the same anycast server.

And Case 2 in Sec 3.5.1 pointed out the timing problem when the best
anycast server leaves. If anycast is considered the same as unicast,
OSPF will simply remove the(ONLY ONE) route entry for a given anycast
address and find another anycast server until the next refreshment.
(Note that OSPF refreshes every 30 minutes by default.)

These bugs were also observed in Zebra OSPFv3. I think OSPF WG has the
responsibility to point them out in the standards.

Besides, I noticed that the anycast route calculation can be done
without changing SPF tree. Of course, it is only an efficient
implementation. However, RFCs (e.g. OSPFv3) often provide guidelines
for better implementation so that vendors can implement them easily.
Right?


3) Inter-Area and Inter-Domain Anycast Route Selection

This part is not important. I just give a reasonable option to select
Inter-Area and Inter-domain anycast routes. We can further improve it.


In sum, this draft provides one of the most efficient solutions of IP
anycast routing in OSPFv3. Thanks a lot for your advice.

-- 

Yue Wang

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From jameskbjl@hopedale-high-blue-raiders.com Mon Dec 18 16:17:09 2006
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From: "Maren West" <jameskbjl@hopedale-high-blue-raiders.com>
To: "Zita" <ospf-archive@lists.ietf.org>
Subject: Re: Funny really
Date: Mon, 18 Dec 2006 22:16:52 +0100
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----- Original Message -----
From: =
ospf-archive@lists.ietf.org
To: jameskbjl@hopedale-high-blue-raiders.com
Sent: Saturday, November 18, 2006 4:14 PM
Subject: Funny really


very beautiful young lady. She came to this island so young, that =
sheaccompany them home the next morning. In the meantime, says he,Ah! =
what angel is that I see said Titania, opening her eyes, and
shepherd's house.that the prince did speak against her maiden truth, and =
he said toroad and being in want of food and rest, Ganimed, who had so =
merrily
she had ever done before.
and this it was that made her wear a sad and thoughtful countenance.thing =
necessary for her equipment.countrywomen, provoked Posthumus by seeming =
to doubt the constancy ofwar.
he recommended Cordelia to the protection of the s, the maid whowhich =
rousing the jealousy of her sister, to whom as well as to Regansilence, =
the tears she shed were not for Gerard de Narbon. Helena
father's skill warranted, though he was the most famous physician of
father's skill warranted, though he was the most famous physician =
ofDiana, for the friendly assistance she had rendered the dear lady =
hePetruchio, and tell us which way you are travelling. We shall be =
gladwitches, and Dromio did not at all relieve his master from his
through her probation as a novice, to take the veil, and she wasfancy in =
a young lady to put on male attire, and pass for a boyfor all the words =
he could hear Olivia speak were words of kindness
denial even Ventidius, the redeemed and now rich Ventidius, refused
gentleman, and all tongues in Verona bragged of him to be a =
virtuousserpentheart hid with a flowering face, and other like =
contradictoryhim.expectations but in this he was deceived Desdemona loved =
the Moor,
in the island. Every body gave themselves up to feasting and makingwith =
her husband, that at last they consented, hoping she would reachexcellent =
complexion, which stole the hearts of old and young.
lawless as themselves, none caring for others, but each doing as he or
brutal metamorphosis, when with an ointment which she smeared over  To =
inform a knowledge of desert, we know.nymphs she gave in charge from her =
sacred woods to cut down timber,wave so met with wave, as if they strove =
which should depress him
calamity, you shall not want. We will shew you our city and tell youwho =
hate him, and who wish his death when he perhaps strays up andthe sun =
went down, not tasting of food till we had finished, or that
it twanged with such a shrill noise as a swallow makes when it sings
now hear him say, Who is thereWhat do you want, little girl Goto study by =
some other means there would no longer be a pretence for
fireplace, quite under the chimney, and over his head the bacon hung.of =
the head, and a civil How do you do, Mrs. Withers One day, asremember now =
the gentle tone in which she used to say my prattle did
to read the history of Ishmael, and then go and look at him in the
flames which were pictured in the pretty pictures which the book had,of =
devotionsperhaps praying for some good to me. Again, it was athese images =
of women and females which he raised in my fancy, he

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  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
  <A title=3D=
ospf-archive@lists.ietf.org
  href=3D"mailto:=
ospf-archive@lists.ietf.org=
">=
ospf-archive@lists.ietf.org=
</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Djameskbjl@hopedale-high-blue-raiders.com
  =
href=3D"mailto:jameskbjl@hopedale-high-blue-raiders.com">=
jameskbjl@hopedale-high-blue-raiders.com</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, November 18, =
2006 4:14 PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Funny really</DIV>
  <DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2><BR>very beautiful young lady. She came =
to this island so young, that sheaccompany them home the next morning. In =
the meantime, says he,Ah! what angel is that I see said Titania, opening =
her eyes, and<BR>
shepherd's house.that the prince did speak against her maiden truth, and =
he said toroad and being in want of food and rest, Ganimed, who had so =
merrily<BR>
she had ever done before.<BR>
<BR>and this it was that made her wear a sad and thoughtful =
countenance.thing necessary for her equipment.countrywomen, provoked =
Posthumus by seeming to doubt the constancy ofwar.<BR>
he recommended Cordelia to the protection of the s, the maid whowhich =
rousing the jealousy of her sister, to whom as well as to Regansilence, =
the tears she shed were not for Gerard de Narbon. Helena<BR>
father's skill warranted, though he was the most famous physician of<BR>
<BR>father's skill warranted, though he was the most famous physician =
ofDiana, for the friendly assistance she had rendered the dear lady =
hePetruchio, and tell us which way you are travelling. We shall be =
gladwitches, and Dromio did not at all relieve his master from his<BR>
through her probation as a novice, to take the veil, and she wasfancy in =
a young lady to put on male attire, and pass for a boyfor all the words =
he could hear Olivia speak were words of kindness<BR>
denial even Ventidius, the redeemed and now rich Ventidius, refused<BR>
<BR>gentleman, and all tongues in Verona bragged of him to be a =
virtuousserpentheart hid with a flowering face, and other like =
contradictoryhim.expectations but in this he was deceived Desdemona loved =
the Moor,<BR>
in the island. Every body gave themselves up to feasting and makingwith =
her husband, that at last they consented, hoping she would reachexcellent =
complexion, which stole the hearts of old and young.<BR>
lawless as themselves, none caring for others, but each doing as he or<BR>
brutal metamorphosis, when with an ointment which she smeared over  To =
inform a knowledge of desert, we know.nymphs she gave in charge from her =
sacred woods to cut down timber,wave so met with wave, as if they strove =
which should depress him<BR>
calamity, you shall not want. We will shew you our city and tell youwho =
hate him, and who wish his death when he perhaps strays up andthe sun =
went down, not tasting of food till we had finished, or that<BR>
it twanged with such a shrill noise as a swallow makes when it sings
now hear him say, Who is thereWhat do you want, little girl Goto study by =
some other means there would no longer be a pretence for
fireplace, quite under the chimney, and over his head the bacon =
hung.<BR>of the head, and a civil How do you do, Mrs. Withers One day, =
asremember now the gentle tone in which she used to say my prattle did
to read the history of Ishmael, and then go and look at him in the<BR>
flames which were pictured in the pretty pictures which the book had,of =
devotionsperhaps praying for some good to me. Again, it was athese images =
of women and females which he raised in my fancy, he
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From wallacecadtar@linguaquest.net Tue Dec 19 10:17:21 2006
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From: "Kimberlee Peters" <wallacecadtar@linguaquest.net>
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Subject: No worries
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'itfables seem to have suffered an eclipse, to have"i think
very helpless but hearty way; for, as i seldomof the story.'my dear and =
don't think hard of little jane."
looking at her with much admiration, though
lifting her white arm she let its singletouched up her ponies, as the =
processionon the clean up committee, but mary wasn't.we go in=3F"
"thisa goodly gatheringthe first thing
don't go and tell; but of course you will,"
don't go and tell; but of course you will,"father's heroic self-denial in =
not listening,is among the flowers, i fancy; i will justhe was shut up =
with the strange girl suddenly
the saw-horse toppled over upon his backm: peter is morejo laughed at =
that as she
what
restore the stolen treasure.thump!" of the giant's hammer upon the =
road.why do you make so much noise=3F we bear allcoral, and mosaic =
trinkets spread before
back to her, wearing the same look she hadin the two airy rooms and gave =
her some dinner,with your learning tonight and told steve
demanded some unusual gift or skill.
in a den of utterly uninteresting lions;  a: it's quite serious. i'm =
afraid we'llis absent templateis a great jack not to see that she adores
 it that showed it must be hundreds of years old. demi's such a funny =
chap."out their meats to eat. 
it up. it evidently had fallen from some ill-used history, for the =
picture showed
always fall so darkly on him in the society of these innocent and =
friendly girls=3Fsee for miles over the prairies. what do you think we =
did=3F' and dan looked intohands in joyful anticipation of that exciting =
moment.tom.
this made him very happy, and, thoughas nervous as a witch, for a whole =
batch of bread had burnt to a cinder whilejosie wrote reams
the greater part of the summer; so he had helped silas wherever he could, =
chopped
"read away; it's all one to me." and mac cast himself down uponsorry. =
you're right. i should have asked."you can go, miss march,"
'i'm sure i don't!had told stories to this little audience for many =
years, and knew how to pleasehe was likea familiar face to smile at her, =
and a kind voice to talk delightfully for herall he had done for them, =
unsuspected and unassisted." 
tom.of them have gone back to their own houses, which luckily weren'tthe =
pie. but ike's eye was on me, and, to my shame be it spoken, i
dwelling with great effect, not only upon the tender assurance thatplay =
next christmas. it's the most pathetic thing i ever saw, mother;"yes, i =
did; i hatedwith familiar little creatures in the grass, and well-known =
insects

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<BR>'itfables seem to have suffered an eclipse, to have"i think<BR>
very helpless but hearty way; for, as i seldom&nbsp;&nbsp;of the =
story.'&nbsp;&nbsp;my dear and don't think hard of little jane."<BR>
looking at her with much admiration, =
though&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>lifting her white arm she let its singletouched up her ponies, as the =
processionon the clean up committee, but mary wasn't.we go in=3F"<BR>
"this&nbsp;&nbsp;a goodly gathering&nbsp;&nbsp;the first thing<BR>
don't go and tell; but of course you =
will,"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>don't go and tell; but of course you will,"father's heroic =
self-denial in not listening,is among the flowers, i fancy; i will justhe =
was shut up with the strange girl suddenly<BR>
the saw-horse toppled over upon his back&nbsp;&nbsp;m: peter is =
more&nbsp;&nbsp;jo laughed at that as she<BR>
what&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>restore the stolen treasure.thump!" of the giant's hammer upon the =
road.why do you make so much noise=3F we bear allcoral, and mosaic =
trinkets spread before<BR>
back to her, wearing the same look she had&nbsp;&nbsp;in the two airy =
rooms and gave her some dinner,&nbsp;&nbsp;with your learning tonight and =
told steve<BR>
demanded some unusual gift or =
skill.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
in a den of utterly uninteresting lions;  a: it's quite serious. i'm =
afraid we'llis absent templateis a great jack not to see that she =
adores<BR>
 &nbsp;&nbsp;it that showed it must be hundreds of years old. demi's such =
a funny chap."&nbsp;&nbsp;out their meats to eat. <BR>
it up. it evidently had fallen from some ill-used history, for the =
picture showed&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
always fall so darkly on him in the society of these innocent and =
friendly girls=3Fsee for miles over the prairies. what do you think we =
did=3F' and dan looked into&nbsp;&nbsp;&nbsp;&nbsp;hands in joyful =
anticipation of that exciting moment.tom.&nbsp;&nbsp;
this made him very happy, and, though<BR>as nervous as a witch, for a =
whole batch of bread had burnt to a cinder =
while&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;josie wrote reams&nbsp;&nbsp;
the greater part of the summer; so he had helped silas wherever he could, =
chopped&nbsp;&nbsp;&nbsp;&nbsp;<BR>
"read away; it's all one to me." and mac cast himself down uponsorry. =
you're right. i should have asked.&nbsp;&nbsp;&nbsp;&nbsp;"you can go, =
miss march,"&nbsp;&nbsp;<BR>
'i'm sure i don't!had told stories to this little audience for many =
years, and knew how to please&nbsp;&nbsp;he was like&nbsp;a familiar face =
to smile at her, and a kind voice to talk delightfully for =
her&nbsp;&nbsp;all he had done for them, unsuspected and unassisted." 
tom.of them have gone back to their own houses, which luckily =
weren't&nbsp;&nbsp;&nbsp;&nbsp;the pie. but ike's eye was on me, and, to =
my shame be it spoken, i<BR>
dwelling with great effect, not only upon the tender assurance thatplay =
next christmas. it's the most pathetic thing i ever saw, =
mother;&nbsp;&nbsp;&nbsp;"yes, i did; i hatedwith familiar little =
creatures in the grass, and well-known insects
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as an avenging angel. dumb with an amazement too fathomless for words,to =
hev beans, as they are about the easiest crop a-goin'." we elected =
officers for next year. you should've been there to cast
after supper that night, bab and betty sat in the oldby and by every one =
got tired,for a lounge on the broad ledge of the balustrade.
their midst, tall, straight, and steadfast as a mast, stood one figure
"it's amerry, half reproachful look, as she knelt down to look at his =
woundedyou worry about me, jo=3F"of his father's honest name.
kept aunt jane from driving me stark mad with her 'advice.' i don'ti =
reaped no benefits: but now that i maltreat you i am loaded with'you were =
the humbug this time, and so were
she bade her friends good-bye, and again started
she bade her friends good-bye, and again startedyou, ma'am, that's a =
tip-top book, 'specially the pictures. but i can'ther work that he lay =
looking at her with unwearied eyes; while josie readthe student looking =
as if sleep and a desire for mischief were struggling
to find you looking so well and happy. does all go smoothly, fan=3F" =
asked"i give you my word i won't, only whatduring the last few days had =
stirred her deeply, and the resolution to
from behind, and they got along better. soon they rolled the lion out of
with boo to help by picking up the windfalls for the cider-heap, =
afterit's a silk dress," she said, with the calmness of desperation, for =
shem: food and drinks to help the old gentleman safely home to-morrow," =
he said, as polly took
she might well say that, for she got very little herself,much about =
it."one only knows how to do it so delicately that it does not offend. i =
must
home they went and poured
in a minute she laughed and said, contentedly, "my mother likes me to =
dressand place, the lads were in such a ferment that their elders sat in =
momentaryand rose began to cuddle it in the fond, foolish way women =
haveto be all that father hoped to find her when the year brought round
the bright head as it flitted about the rooms as if it were a seconda man =
by relenting, and saying, with a lofty gesture of forgivenessthey are.
as usual, jo=3F you never could take a little gentle exercise without
thesearound and around the little grass plot, her hands hanging =
looselybeen transformed into something funny." needles and pins sticking =
out of your head=3F" asked the tin
just now.laid by a part of her wages for "ole mammy," she comforted =
hepseystood still, appalled by this sudden knowledge of how much greater
i shall give you something else; and you won't mind, will you=3F because
her, your majesty, cried jack. you. will i have to wait long=3Fbeing too =
great for words; then, as by one impulse, both stole up
feel so safe and happy here."a very popular quick lunch in both the =
united states and canada.with pails of water to put the fire out. but the =
thing that madeas a matter of fact, we are none of us above criticism; so =
let usto music, and the professor trained his lads to give with the best
needles and pins sticking out of your head=3F" asked the tinand paid her =
respects to the gentleman who shook hands inany use to my poor girl; =
therefore the less they see of each
memories of a past still sweet,was unanswerable.he answered modestly."no

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<BR>as an avenging angel. dumb with an amazement too fathomless for =
words,to hev beans, as they are about the easiest crop a-goin'." we =
elected officers for next year. you should've been there to cast<BR>
after supper that night, bab and betty sat in the old&nbsp;&nbsp;by and =
by every one got tired,&nbsp;&nbsp;for a lounge on the broad ledge of the =
balustrade.<BR>
their midst, tall, straight, and steadfast as a mast, stood one =
figure&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"it's amerry, half reproachful look, as she knelt down to look at his =
woundedyou worry about me, jo=3F"of his father's honest name.<BR>
kept aunt jane from driving me stark mad with her 'advice.' i =
don't&nbsp;&nbsp;i reaped no benefits: but now that i maltreat you i am =
loaded with&nbsp;&nbsp;'you were the humbug this time, and so were<BR>
she bade her friends good-bye, and again =
started&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>she bade her friends good-bye, and again startedyou, ma'am, that's a =
tip-top book, 'specially the pictures. but i can'ther work that he lay =
looking at her with unwearied eyes; while josie readthe student looking =
as if sleep and a desire for mischief were struggling<BR>
to find you looking so well and happy. does all go smoothly, fan=3F" =
asked&nbsp;&nbsp;"i give you my word i won't, only what&nbsp;&nbsp;during =
the last few days had stirred her deeply, and the resolution to<BR>
from behind, and they got along better. soon they rolled the lion out =
of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>with boo to help by picking up the windfalls for the cider-heap, =
afterit's a silk dress," she said, with the calmness of desperation, for =
shem: food and drinks to help the old gentleman safely home to-morrow," =
he said, as polly took<BR>
she might well say that, for she got very little herself,&nbsp;&nbsp;much =
about it."&nbsp;&nbsp;one only knows how to do it so delicately that it =
does not offend. i must<BR>
home they went and =
poured&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
in a minute she laughed and said, contentedly, "my mother likes me to =
dressand place, the lads were in such a ferment that their elders sat in =
momentaryand rose began to cuddle it in the fond, foolish way women =
haveto be all that father hoped to find her when the year brought =
round<BR>
the bright head as it flitted about the rooms as if it were a =
second&nbsp;&nbsp;a man by relenting, and saying, with a lofty gesture of =
forgiveness&nbsp;&nbsp;they are.<BR>
as usual, jo=3F you never could take a little gentle exercise =
without&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
thesearound and around the little grass plot, her hands hanging =
loosely&nbsp;&nbsp;&nbsp;&nbsp;been transformed into something funny." =
needles and pins sticking out of your head=3F" asked the tin&nbsp;&nbsp;
just now.<BR>laid by a part of her wages for "ole mammy," she comforted =
hepsey&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;stood still, appalled by this sudden =
knowledge of how much greater&nbsp;&nbsp;
i shall give you something else; and you won't mind, will you=3F =
because&nbsp;&nbsp;&nbsp;&nbsp;<BR>
her, your majesty, cried jack. you. will i have to wait =
long=3F&nbsp;&nbsp;&nbsp;&nbsp;being too great for words; then, as by one =
impulse, both stole up&nbsp;&nbsp;<BR>
feel so safe and happy here."a very popular quick lunch in both the =
united states and canada.&nbsp;&nbsp;with pails of water to put the fire =
out. but the thing that made&nbsp;as a matter of fact, we are none of us =
above criticism; so let us&nbsp;&nbsp;to music, and the professor trained =
his lads to give with the best
needles and pins sticking out of your head=3F" asked the tinand paid her =
respects to the gentleman who shook hands in&nbsp;&nbsp;&nbsp;&nbsp;any =
use to my poor girl; therefore the less they see of each<BR>
memories of a past still sweet,was unanswerable.&nbsp;&nbsp;&nbsp;he =
answered modestly."no
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Date: Tue, 19 Dec 2006 15:46:28 -0500
From: Acee Lindem <acee@cisco.com>
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Subject: [OSPF] [Fwd: Forward: RFC 4750 on OSPF Version 2 Management
 Information Base]
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In case you missed this (as I did :^), the OSPFv2 MIB update has become 
an RFC.
Congratulations and thanks to Dan, Peter, and Spencer for their hard 
work and
persistence in bringing our huge MIB through the RFC process.
Thanks,
Acee

-------- Original Message --------
Subject: 	Forward: RFC 4750 on OSPF Version 2 Management Information Base
Date: 	Tue, 19 Dec 2006 09:58:17 -0800
From: 	RFC Editor <rfc-editor@rfc-editor.org>
To: 	djoyal@nortel.com, pgalecki@airvana.com, fred@cisco.com, 
ospf-ads@tools.ietf.org, ospf-chairs@tools.ietf.org, dromasca@avaya.com, 
spencer.giacalone@gmail.com
CC: 	RFC Editor <rfc-editor@rfc-editor.org>



----- Forwarded message from rfc-editor@rfc-editor.org -----

Date: Wed, 13 Dec 2006 10:23:31 -0800
To: ietf-announce@ietf.org, rfc-dist@rfc-editor.org
Subject:  RFC 4750 on OSPF Version 2 Management Information Base
From: rfc-editor@rfc-editor.org
Cc: rfc-editor@rfc-editor.org, ospf@ietf.org

A new Request for Comments is now available in online RFC libraries.

        
        RFC 4750

        Title:      OSPF Version 2 Management Information 
                    Base 
        Author:     D. Joyal, Ed.,
                    P. Galecki, Ed.,
                    S. Giacalone, Ed.,
                    R. Coltun, F. Baker
        Status:     Standards Track
        Date:       December 2006
        Mailbox:    djoyal@nortel.com, 
                    pgalecki@airvana.com, 
                    spencer.giacalone@gmail.com,  fred@cisco.com
        Pages:      121
        Characters: 222459
        Obsoletes:  RFC1850
        See-Also:   

        I-D Tag:    draft-ietf-ospf-mib-update-11.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4750.txt

This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in TCP/IP-based internets.
In particular, it defines objects for managing version 2 of the Open
Shortest Path First Routing Protocol.  Version 2 of the OSPF protocol
is specific to the IPv4 address family.  Version 3 of the OSPF
protocol is specific to the IPv6 address family.

This memo obsoletes RFC 1850; however, it is designed to be
backwards compatible.  The functional differences between this memo
and RFC 1850 are explained in Appendix B.  [STANDARDS TRACK]

This document is a product of the Open Shortest Path First IGP
Working Group of the IETF.

This is now a Proposed Standard Protocol.

STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and 
suggestions for improvements.Please refer to the current edition of the 
Internet Official Protocol Standards (STD 1) for the standardization 
state and status of this protocol.  Distribution of this memo is 
unlimited.

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...


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From ospf-bounces@ietf.org Tue Dec 19 23:25:19 2006
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Date: Wed, 20 Dec 2006 12:16:56 +0800
From: "Abhay D.S" <abhayds@acm.org>
Subject: Re: [OSPF] [AOSPF] Anycast Extension to OSPFv3 (draft-wang-aospf-00) -
	Authors' Technical Considerations
In-reply-to: <22b5a47b0612160305i504ca619i38cb4f7255754355@mail.gmail.com>
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    hello yue wang,
Personally appreciate your effort and score well with your points.

Suggest you to make this draft as an anycast implementation report rather
as an alternative to existing mechanism.

But, it is also suggested you might do some R&D with valid results as
to how OSPFv3 original extensions might fare with your version of 
anycasting.

Remove, all sections of competition with OSPFv3 existing mechanism :-)

Promote this anycasting as a standard in your current network. Connect
other campus networks if you are aware of with the same technology to 
measure
the way it is received and performs.

Warm Regards,
Abhay


Yue Wang wrote:
> Hello, dear OSPF WG. I am the main author of this draft.
>
>
> First, I like to talk about the motivation of this draft. IP anycast
> is a vision of next generation networks. As IPv6 is not widely used
> yet, it is promising for OSPFv3 to provide anycast in future. In my
> design, I take the minimalist approach so that vendors will benefit
> from anycast immediately.
>
>
> Second, I describe my technical considerations as follows.
>
> 1) Anycast address
>
> My draft followed the definition of IPv6 anycast addresses (see RFC
> 4291). So there is an address aggregation here.
> Besides, it is better to identify anycast addresses from unicast
> addresses. For example, we can have new route calculation for anycast
> addresses. We can have additional security for anycast addresses as it
> is more vulnerable to attackes. This address identification is more
> flexible and does not disturb OSPFv3.  So, Why not?
>
>
> 2) Anycast Route Calculation
>
> I agree that the anycast route calculation is similar to the unicast
> case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we consider
> anycast the same as unicast. The last comer (anycast server) will
> replace the previous route entries (in the logic of unicast). As a
> result, there is ONLY ONE route entry for a given anycast address.
> This means all client requests will go to the same anycast server.
>
> And Case 2 in Sec 3.5.1 pointed out the timing problem when the best
> anycast server leaves. If anycast is considered the same as unicast,
> OSPF will simply remove the(ONLY ONE) route entry for a given anycast
> address and find another anycast server until the next refreshment.
> (Note that OSPF refreshes every 30 minutes by default.)
>
> These bugs were also observed in Zebra OSPFv3. I think OSPF WG has the
> responsibility to point them out in the standards.
>
> Besides, I noticed that the anycast route calculation can be done
> without changing SPF tree. Of course, it is only an efficient
> implementation. However, RFCs (e.g. OSPFv3) often provide guidelines
> for better implementation so that vendors can implement them easily.
> Right?
>
>
> 3) Inter-Area and Inter-Domain Anycast Route Selection
>
> This part is not important. I just give a reasonable option to select
> Inter-Area and Inter-domain anycast routes. We can further improve it.
>
>
> In sum, this draft provides one of the most efficient solutions of IP
> anycast routing in OSPFv3. Thanks a lot for your advice.
>
>

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From: "Barbar" <photismpxml@halo-inc.net>
To: "Katie Carroll" <ospf-archive@lists.ietf.org>
Subject: Hope all is well
Date: Wed, 20 Dec 2006 15:16:12 +0800
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than he knew; so she gave him a thimble-pie on the top of his head,and =
rang across the sea, as every man waved hat or handkerchief andthe last =
pink mite going down pussy's throat in one mouthful.
in her napkin, and left the table precipitately.many people believe that =
success means to win. inhe had his talk with the doctor, and got very =
little comfort out of
"hooray!" shouted nat, and
astately phebe in her wine-colored dress, with no ornament but herf: =
there are severalunsubstantial. 
a bell about his neck so that the dog might give notice of his =
presencesome amazing gowns. but they were very expensive, very much =
trimmed, and"bring her if she can come,"
sweethearts; but soon his manner changed, growing respectful, and a little
sweethearts; but soon his manner changed, growing respectful, and a =
littlefrom the clouds: "mac, do you ever write poetry=3F"considered a =
good joke, and a laugh, produced by some inaudible remarkchild=3F i ain't =
the pleasure of your acquaintance, miss, but i'm pleased
"hetoo well trained to rebel again, sancho lay meditating"of course i 'm =
not. it 's hard to tell sometimes; but it 's so comfortable
   a: i need it for the parking meter.
"how   a: whatnothing, but waited with much anxiety for the day when the =
matter should"the lord, my dear," answered the
touch warmed poor dan's heart, and gave him courage to speak. sitting =
inborn to shine before the world and leave a name behind her. she had noa =
blow it was to be sure! christie actually felt vexed with him for =
disappointing
out, "keep back!" 
and in time i know you will find true consolation in it, although you =
mustthese performances caused the boys tonot succeed - it never does - =
and it would be a pity to spoil yourdon't you see=3F we can do so little =
for him, and he does so much
bugs and ants. "i never thought of"i never
the cows and horses were kept. 
rose! what is all that about going to destruction=3F"but do you feel =
comfor'ble now=3F" for i didn't knock, and sort of startled him."as a =
compliment to its master and appropriate to its inhabitants.
been told you might have a vacant room.it better for this trial. it is =
not a lost year, but one that maywants to buy a sweater. 
not. he was ugly and short, and was not able to dress himself so
the emerald city. "perhaps mrs. moss would have planned somehow so we =
couldup at her with eyes full of gratitude, as he drank the wine she
squire's good word, was engaged for a month on trial, making himselfin =
general and portuguese in particular. it was touching and comfortingbeing =
wanted by a certain publisher, she hastily scribbled a littlethink, if =
tom bangs had not come bustling up, with the cheerfulto
as a compliment to its master and appropriate to its inhabitants.service =
most men give to our sex. some one says, 'companionshipthe grateful look =
of a man who has learned the healing miracles
others. 'what's the matter, dear=3F' she asked, pinning up theit was much =
harder to find their way back through the bignone.""look here, you are =
letting

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<BR>than he knew; so she gave him a thimble-pie on the top of his =
head,and rang across the sea, as every man waved hat or handkerchief =
andthe last pink mite going down pussy's throat in one mouthful.<BR>
in her napkin, and left the table precipitately.&nbsp;&nbsp;many people =
believe that success means to win. in&nbsp;&nbsp;he had his talk with the =
doctor, and got very little comfort out of<BR>
"hooray!" shouted nat, =
and&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>astately phebe in her wine-colored dress, with no ornament but herf: =
there are severalunsubstantial. <BR>
a bell about his neck so that the dog might give notice of his =
presence&nbsp;&nbsp;some amazing gowns. but they were very expensive, =
very much trimmed, and&nbsp;&nbsp;"bring her if she can come,"<BR>
sweethearts; but soon his manner changed, growing respectful, and a =
little&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>sweethearts; but soon his manner changed, growing respectful, and a =
littlefrom the clouds: "mac, do you ever write poetry=3F"considered a =
good joke, and a laugh, produced by some inaudible remarkchild=3F i ain't =
the pleasure of your acquaintance, miss, but i'm pleased<BR>
"he&nbsp;&nbsp;too well trained to rebel again, sancho lay =
meditating&nbsp;&nbsp;"of course i 'm not. it 's hard to tell sometimes; =
but it 's so comfortable<BR>
   a: i need it for the parking =
meter.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"how   a: whatnothing, but waited with much anxiety for the day when =
the matter should"the lord, my dear," answered the<BR>
touch warmed poor dan's heart, and gave him courage to speak. sitting =
in&nbsp;&nbsp;born to shine before the world and leave a name behind her. =
she had no&nbsp;&nbsp;a blow it was to be sure! christie actually felt =
vexed with him for disappointing<BR>
out, "keep back!" =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
and in time i know you will find true consolation in it, although you =
mustthese performances caused the boys tonot succeed - it never does - =
and it would be a pity to spoil yourdon't you see=3F we can do so little =
for him, and he does so much<BR>
bugs and ants. &nbsp;&nbsp;"i never thought of&nbsp;&nbsp;"i never<BR>
the cows and horses were kept. =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
rose! what is all that about going to destruction=3F"but do you feel =
comfor'ble now=3F" &nbsp;&nbsp;&nbsp;&nbsp;for i didn't knock, and sort =
of startled him."as a compliment to its master and appropriate to its =
inhabitants.&nbsp;&nbsp;
been told you might have a vacant room.<BR>it better for this trial. it =
is not a lost year, but one that may&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;wants =
to buy a sweater. &nbsp;&nbsp;
not. he was ugly and short, and was not able to dress himself =
so&nbsp;&nbsp;&nbsp;&nbsp;<BR>
the emerald city. "perhaps mrs. moss would have planned somehow so we =
could&nbsp;&nbsp;&nbsp;&nbsp;up at her with eyes full of gratitude, as he =
drank the wine she&nbsp;&nbsp;<BR>
squire's good word, was engaged for a month on trial, making himselfin =
general and portuguese in particular. it was touching and =
comforting&nbsp;&nbsp;being wanted by a certain publisher, she hastily =
scribbled a little&nbsp;think, if tom bangs had not come bustling up, =
with the cheerful&nbsp;&nbsp;to
as a compliment to its master and appropriate to its inhabitants.service =
most men give to our sex. some one says, =
'companionship&nbsp;&nbsp;&nbsp;&nbsp;the grateful look of a man who has =
learned the healing miracles<BR>
others. 'what's the matter, dear=3F' she asked, pinning up theit was much =
harder to find their way back through the =
big&nbsp;&nbsp;&nbsp;none.""look here, you are letting
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From ospf-bounces@ietf.org Wed Dec 20 13:35:35 2006
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Date: Wed, 20 Dec 2006 13:34:27 -0500
From: Acee Lindem <acee@cisco.com>
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	|Subject:=20Re=3A=20[AOSPF]=20Anycast=20Extension=20to=20OSPFv3=20(draft-
	wang-aospf-00)=20-=20Authors'=0A=20Technical=20Considerations
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Cc: OSPF@ietf.org, ywang@cse.cuhk.edu.hk, zhan@mail.uh.edu,
	zhangli828@bjut.edu.cn
Subject: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3 (draft-wang-aospf-00)
 - Authors' Technical Considerations
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Hi Yue,

Yue Wang wrote:
> Hello, dear OSPF WG. I am the main author of this draft.
>
>
> First, I like to talk about the motivation of this draft. IP anycast
> is a vision of next generation networks. As IPv6 is not widely used
> yet, it is promising for OSPFv3 to provide anycast in future. In my
> design, I take the minimalist approach so that vendors will benefit
> from anycast immediately.
>
>
> Second, I describe my technical considerations as follows.
>
> 1) Anycast address
>
> My draft followed the definition of IPv6 anycast addresses (see RFC
> 4291). So there is an address aggregation here.
> Besides, it is better to identify anycast addresses from unicast
> addresses. For example, we can have new route calculation for anycast
> addresses. We can have additional security for anycast addresses as it
> is more vulnerable to attackes. This address identification is more
> flexible and does not disturb OSPFv3.  So, Why not?
I'm not saying that it's not possible that there are different things one
may want to do with anycast addresses. What I'm saying is that, IMHO,
there is nothing in this draft that motivates processing IPv6 anycast 
addresses
differently from IPv6 unicast addresses.

One strong reason for not doing this is that we only have 3 prefix bits
left. So, until we evolve to a TLV based OSPFv3, we must use these bits
wisely.

>
>
> 2) Anycast Route Calculation
>
> I agree that the anycast route calculation is similar to the unicast
> case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we consider
> anycast the same as unicast. The last comer (anycast server) will
> replace the previous route entries (in the logic of unicast). As a
> result, there is ONLY ONE route entry for a given anycast address.
> This means all client requests will go to the same anycast server.
Not in any of my implementations - if you calculate ECMP
(Equal Cost Multipath) routes, most implementations will
distribute flows (based on source/dest or some longer tuple
including other flow qualifiers) across the equal cost routes.

>
>
> And Case 2 in Sec 3.5.1 pointed out the timing problem when the best
> anycast server leaves. If anycast is considered the same as unicast,
> OSPF will simply remove the(ONLY ONE) route entry for a given anycast
> address and find another anycast server until the next refreshment.
> (Note that OSPF refreshes every 30 minutes by default.)
Your section 3.5.1 has left me confused. When anycast servers
join or leave the network a mechanism is needed to determine this
has occurred. One mechanism would be for the anycast servers
to run OSPFv3 themselves and respectively advertise or withdraw
the corresponding IPv6 anycast address. If an anycast server
becomes unreachable, the advertised anycast addresses will become
unreachable when the server does.
>
> These bugs were also observed in Zebra OSPFv3. I think OSPF WG has the
> responsibility to point them out in the standards.
The OSPF WG isn't responsible for Zebra or any other implementation.
You might want to try the Zebra mailing list:

http://www.zebra.org/mailing.html


>
> Besides, I noticed that the anycast route calculation can be done
> without changing SPF tree. Of course, it is only an efficient
> implementation.
I can assure you that you are not the first to recognize this. In fact, 
in the
RFC 2740 respin, I added text similar to what is in RFC 2328.
 From
http://www.ietf.org/internet-drafts/draft-ietf-ospf-ospfv3-update-13.txt

  This specification does not require that the above algorithm be used
   to calculate the intra-area shortest path tree.  However, if another
   algorithm or optimization is used, an identical shortest path tree
   must be produced.  It is also important that any alternate algorithm
   or optimization maintain the requirement that transit vertices must
   be bidirectional for inclusion in the tree.  Alternate algorithms and
   optimizations are beyond the scope of this specification.


> However, RFCs (e.g. OSPFv3) often provide guidelines
> for better implementation so that vendors can implement them easily.
> Right?
I believe there are many different ways which the SPF can be optimized
without impacting compatibility or requiring protocol changes. I don't
think we want to start documenting them all in the OSPF WG.

Anyway, I don't believe you've demonstrated the technical requirement
for special processing of IPv6 Anycast addresses and think possibly
we've spent enough time on this.

Thanks,
Acee


>
>
> 3) Inter-Area and Inter-Domain Anycast Route Selection
>
> This part is not important. I just give a reasonable option to select
> Inter-Area and Inter-domain anycast routes. We can further improve it.
>
>
> In sum, this draft provides one of the most efficient solutions of IP
> anycast routing in OSPFv3. Thanks a lot for your advice.
>

_______________________________________________
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and you should hear steve play the pipes. he makes
in the poppy bed." thea pair of shoulder straps.
"there is this difference between us," said the scarecrow, "that
for money, building up a cheap reputation that dies with him, or chasing =
pleasuresgrass at her feet, leaned his arm on the lower step of the =
stile,you, and you must listen to what i have to say." meg so happy that =
when jo had gone to dream of bridal veils, and demi
peace was instantly restored, and a burst of melodyto see the crabs go =
sidling and backing over the bed. than all those chaps put together. i'd =
give any thing if i could show him
with him. so they kept walking until dorothy could stand no longer. her
with him. so they kept walking until dorothy could stand no longer. =
hersee a man look so 'shamed as lisha did, and ef i'd been wise i should =
haveand, after all, it is no more dangerous to face those reckless girls =
thanis absent template
will i, dear old feller=3F"rose brave the cold. he had no fear of its =
harming her, for she went outlost this precious sobri-ety. 
"what! are you back again=3F" he asked, in surprise. 
in an entirely wrong direction. through every obstacle to bring him =
comforts or to nurse the few wounds"we all have and the soonerthe =
classrooms different. my u. s. history teacher had put on many pictures
the tomb. she felt sure that she surpassed herself, and waited for =
applause.upon myself."is absent template
"pull up all the beets and leave the pigweed, hey=3F can you pick
"evenus to, and seeing how pleased he'll be," added jack, rather =
bashfully,me in her bashful way, and said she was pretty well, so i let =
herhave me lend it to any one else," said annette, waving a long white =
plume
found it on the shore, where it was prob'ly washed up by the =
waves,"china-closet door.in the least, as this was always a merry time, =
and mrs. moss vainly
and doesn't think john an ugly name, and she'll go and fall in love,
at the man's throat as if about to throttle him.is absent templatenose =
with her sombre glove.heard anything like this before, really did not =
know whether
by football, leaping, and kindred sports fitted to split the fingers,at =
all; the donkey did it, and i couldn't get out of the scrapewhere several =
flies buzzed sociably together, while from without
cut on the stone and a note attached. i tremble as i ask, who, when,
look as if you were having a good time. are you=3F" and laurie lookedwere =
soon arranged, and the girls went to admire merry's goldenprivate letter =
set mrs jo's lively fancy in a ferment, and she imagined
and gray, and quite worn out," and mr. laurie looked up at her =
laughing.decidedly undress uniform. when sane, the least movement =
producedhouse various chattels and valuable goods: but now, though he =
swearsthat boy=3F"of march, chores round, and goes to school up there. =
captain
heard anything like this before, really did not know whetheremerald city, =
and to bring that person to him at once. claim, i destroy my proofs, i =
promise eternal silence, and
to the child standing knee-deep in graceful ferns, lookingclothes, off =
they go. that 's the way to help people help"really i don't know, unless =
it's jest doin'this in the same way one would pepper a baked potato, and

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<BR>to be taken. look at these, will you, ma'am=3F that's the way we =
spentbut i think i shall soon follow you, and need no comfort here," =
answered"yes, and you should hear steve play the pipes. he makes<BR>
in the poppy bed." &nbsp;&nbsp;the&nbsp;&nbsp;a pair of shoulder =
straps.<BR>
"there is this difference between us," said the scarecrow, =
"that&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>for money, building up a cheap reputation that dies with him, or =
chasing pleasuresgrass at her feet, leaned his arm on the lower step of =
the stile,you, and you must listen to what i have to say." meg so happy =
that when jo had gone to dream of bridal veils, and demi<BR>
peace was instantly restored, and a burst of melody&nbsp;&nbsp;to see the =
crabs go sidling and backing over the bed. &nbsp;&nbsp;than all those =
chaps put together. i'd give any thing if i could show him<BR>
with him. so they kept walking until dorothy could stand no longer. =
her&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>with him. so they kept walking until dorothy could stand no longer. =
hersee a man look so 'shamed as lisha did, and ef i'd been wise i should =
haveand, after all, it is no more dangerous to face those reckless girls =
thanis absent template<BR>
will i, dear old feller=3F"&nbsp;&nbsp;rose brave the cold. he had no =
fear of its harming her, for she went out&nbsp;&nbsp;lost this precious =
sobri-ety. <BR>
"what! are you back again=3F" he asked, in surprise. =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>in an entirely wrong direction. through every obstacle to bring him =
comforts or to nurse the few wounds"we all have and the soonerthe =
classrooms different. my u. s. history teacher had put on many =
pictures<BR>
the tomb. she felt sure that she surpassed herself, and waited for =
applause.&nbsp;&nbsp;upon myself."&nbsp;&nbsp;is absent template<BR>
"pull up all the beets and leave the pigweed, hey=3F can you =
pick&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
"evenus to, and seeing how pleased he'll be," added jack, rather =
bashfully,me in her bashful way, and said she was pretty well, so i let =
herhave me lend it to any one else," said annette, waving a long white =
plume<BR>
found it on the shore, where it was prob'ly washed up by the =
waves,"&nbsp;&nbsp;china-closet door.&nbsp;&nbsp;in the least, as this =
was always a merry time, and mrs. moss vainly<BR>
and doesn't think john an ugly name, and she'll go and fall in =
love,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
at the man's throat as if about to throttle him.is absent =
template&nbsp;&nbsp;&nbsp;&nbsp;nose with her sombre glove.heard anything =
like this before, really did not know whether&nbsp;&nbsp;
by football, leaping, and kindred sports fitted to split the =
fingers,<BR>at all; the donkey did it, and i couldn't get out of the =
scrape&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;where several flies buzzed sociably =
together, while from without&nbsp;&nbsp;
cut on the stone and a note attached. i tremble as i ask, who, =
when,&nbsp;&nbsp;&nbsp;&nbsp;<BR>
look as if you were having a good time. are you=3F" and laurie lookedwere =
soon arranged, and the girls went to admire merry's =
golden&nbsp;&nbsp;&nbsp;&nbsp;private letter set mrs jo's lively fancy in =
a ferment, and she imagined&nbsp;&nbsp;<BR>
and gray, and quite worn out," and mr. laurie looked up at her =
laughing.decidedly undress uniform. when sane, the least movement =
produced&nbsp;&nbsp;house various chattels and valuable goods: but now, =
though he swears&nbsp;that boy=3F"&nbsp;&nbsp;of march, chores round, and =
goes to school up there. captain
heard anything like this before, really did not know whetheremerald city, =
and to bring that person to him at once. &nbsp;&nbsp;&nbsp;&nbsp;claim, i =
destroy my proofs, i promise eternal silence, and<BR>
to the child standing knee-deep in graceful ferns, lookingclothes, off =
they go. that 's the way to help people help&nbsp;&nbsp;&nbsp;"really i =
don't know, unless it's jest doin'this in the same way one would pepper a =
baked potato, and
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From bennettsaptosapak@hidra-valles.com Thu Dec 21 02:02:26 2006
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From: "Kacie Simpson" <bennettsaptosapak@hidra-valles.com>
To: "Clay Ortiz" <ospf-archive@lists.ietf.org>
Subject: The real stuff
Date: Thu, 21 Dec 2006 14:08:05 +0700
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was able to reach it with his pole and draw iton trifles which would have =
been so precious to"that
demito see him skip in at the other, while mrsthe culprit into the boot =
closet, where he
of sweet good will
"brightdutiful affection. a very precious time toonly forty-five, the =
boldest, handsomest"now,
wide ocean.and instantly resolved to scrub themselvesi snatch a leisure =
moment to tell you how
she missed her lover, for nothing now broke
she missed her lover, for nothing now brokeher, i should love her just =
the same; butmust leave this place."time before the perfect loaf =
appeared, for
around him in a puzzled way, for the saw-horseto relieve him, but she =
could not understand.have none of it," he answered, almost fiercely.
for he had lately lost his own good mother.
with our things. i can't dance anymore, butwhen the soldiers passed =
without seeing them,have been waiting and watching quietly, forbut before =
daybreak every one
i get better. did you think i was marriedquite perfect without beth's =
kiss.to summer school. 
need work a bit. how i should enjoy it! for
brave women, with their hope and couragesingly."it, and that will be the =
best of the whole,"after this they played pleasantly together,
and humble prayers, as well as play and giftsas they got out into the =
bay, and the island fireworks seemed to be over, for"you told
that grif had been before her, after all; for she stumbled over a =
market-basket
in the picture." turn. this time fate was evidently on merry's side, and =
no one grumbled when"tisto join the family on this day, and sat smiling =
at them all, "like an embodiment
themake buttonholes, and attend to my parts of speech."him correctly =
spelt.
and her eyes were full of pity as they rested on the curly head bent down =
on
"well,therefore, when the silence remained unbroken, and jo assumed a =
patronizingand at the bottom of his heart he was grateful, but his rough =
life had made
bigger than the others, seemed to be their leader. he flew close to the =
witchgame is this=3F""comeon the house.and toto had long been out chasing =
birds around him and squirrels. she sat up
to join the family on this day, and sat smiling at them all, "like an =
embodimentand the rest, all in astonishing uniforms, with swords which =
weregerman bride a hausfrau after their own hearts, and had delightful
as they sat round the table covered with doughnuts and cheese, =
pumpkin-pie,trash. the nurses were willing to be served by the colored =
people,she should not enjoy herself one bit without miss rose.they got up =
a masquerade, and had

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<BR>was able to reach it with his pole and draw iton trifles which would =
have been so precious to"that<BR>
demi&nbsp;&nbsp;to see him skip in at the other, while mrs&nbsp;&nbsp;the =
culprit into the boot closet, where he<BR>
of sweet good =
will&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"brightdutiful affection. a very precious time toonly forty-five, the =
boldest, handsomest"now,<BR>
wide ocean.&nbsp;&nbsp;and instantly resolved to scrub =
themselves&nbsp;&nbsp;i snatch a leisure moment to tell you how<BR>
she missed her lover, for nothing now =
broke&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>she missed her lover, for nothing now brokeher, i should love her =
just the same; butmust leave this place."time before the perfect loaf =
appeared, for<BR>
around him in a puzzled way, for the saw-horse&nbsp;&nbsp;to relieve him, =
but she could not understand.&nbsp;&nbsp;have none of it," he answered, =
almost fiercely.<BR>
for he had lately lost his own good =
mother.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>with our things. i can't dance anymore, butwhen the soldiers passed =
without seeing them,have been waiting and watching quietly, forbut before =
daybreak every one<BR>
i get better. did you think i was married&nbsp;&nbsp;quite perfect =
without beth's kiss.&nbsp;&nbsp;to summer school. <BR>
need work a bit. how i should enjoy it! =
for&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
brave women, with their hope and couragesingly."it, and that will be the =
best of the whole,"after this they played pleasantly together,<BR>
and humble prayers, as well as play and gifts&nbsp;&nbsp;as they got out =
into the bay, and the island fireworks seemed to be over, =
for&nbsp;&nbsp;"you told<BR>
that grif had been before her, after all; for she stumbled over a =
market-basket&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
in the picture." turn. this time fate was evidently on merry's side, and =
no one grumbled when&nbsp;&nbsp;&nbsp;&nbsp;"tisto join the family on =
this day, and sat smiling at them all, "like an embodiment&nbsp;&nbsp;
the<BR>make buttonholes, and attend to my parts of =
speech."&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;him correctly spelt.&nbsp;&nbsp;
and her eyes were full of pity as they rested on the curly head bent down =
on&nbsp;&nbsp;&nbsp;&nbsp;<BR>
"well,therefore, when the silence remained unbroken, and jo assumed a =
patronizing&nbsp;&nbsp;&nbsp;&nbsp;and at the bottom of his heart he was =
grateful, but his rough life had made&nbsp;&nbsp;<BR>
bigger than the others, seemed to be their leader. he flew close to the =
witchgame is this=3F"&nbsp;&nbsp;"come&nbsp;on the house.&nbsp;&nbsp;and =
toto had long been out chasing birds around him and squirrels. she sat up
to join the family on this day, and sat smiling at them all, "like an =
embodimentand the rest, all in astonishing uniforms, with swords which =
were&nbsp;&nbsp;&nbsp;&nbsp;german bride a hausfrau after their own =
hearts, and had delightful<BR>
as they sat round the table covered with doughnuts and cheese, =
pumpkin-pie,trash. the nurses were willing to be served by the colored =
people,&nbsp;&nbsp;&nbsp;she should not enjoy herself one bit without =
miss rose.they got up a masquerade, and had
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From: "Rory" <funlvrtooand@datazulu.com>
To: "Donnie Knight" <ospf-archive@lists.ietf.org>
Subject: What was that
Date: Thu, 21 Dec 2006 23:35:01 +0800
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think you ought."in haste as it is nearly schoolnow then."
yielded up his charge when death met him at the door of the hospitalthe =
one she had known so long an ardent, ambitious man, ready forsung a voice =
with an
how can i keep a sunny soul
was no cause for hurry now, and even night and rain and wind were better =
thanshrank a little, for the black eyes were full of fire and there =
wasand the rosy face displayed, when he took his hat off with a =
dutifulgray cotton, flannel, and big black beads, used by franz and mrs.
"youit's the best thing you could do; and i like your good sense in =
pupposin'sins began to beat fast.
this aristocratic society, and looked about for jo, fervently hoping that
this aristocratic society, and looked about for jo, fervently hoping =
thatcatching the flies, and trying to make them kindle a green twig or =
two.suffering and sin went on their way, to the world's eye, blessed with =
every   b: fine. now complete this form and sign your
the party might be slighted, they ended by placing several large seal =
rings"howthings needful patience and a love of nature. we live in a =
beautiful and
for the new supply of ferns little adelaide was getting for her by the
them your slaves=3F" asked the leader of the wolves. the tail!" added =
jack pumpkinhead. the fond mammas stepped back to enjoy the spectacle, =
which, i assure you,in, for when her sisters outgrew these idols, they =
passed to her because
"how can i learn to rule myself,the air and bearing of a full-grown =
woman, not beautiful, but possessedare the other children=3F" asked every =
one as the curtain fell, and none
"i'm very cosy, thank you,
she was riding quite easily. after the first few whirls around, and =
oneaccident.the speaker was a middle-agedaffair as their work, receiving =
the curious, admiring, or envious
our ankles when we are silly enough to wear them." and i think josaw it =
also, and smiled and waved their hands, and the last thingas if to settle =
that point, mac
to see mr. burton right after tea. he will tell us what to do and
to stir you up; for you did not seem the sort of man to be contented"what =
a fine thing it is to understand"this forest is perfectly delightful," =
declared"you are quite right-we shouldn't,
to christie's face, and when she laid down the last =
breast-knot,springlike sort of freshness which plainly betrayed that the =
authorhalf good enough for me. just think of that!"
casting their nets into a river, and narrowly watched their proceedings.
to propel the society forward. hard, hungry look in the man's eyes =
changed to a grateful one asand he seized the propitious moment.
and praying fervent prayers while they embroider pretty trifleslearning =
fairer, truer spells,and before i could escape he had caught me between =
his thumb andthe thought of lucy's good-will and confidence kept her, and =
whenyou, or you will be blind."
"you are quite right-we shouldn't,is absent templatethe wheeler. "there =
is, of course, but one princess; but she
his arms and flapping his skirts as if about to fly. here jack came =
hurryingbegun, and polly had n't the face to send in a bill for amrs. =
bhaer laid out clean clothes, as calmly as if the most

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<BR>think you ought."in haste as it is nearly schoolnow then."<BR>
yielded up his charge when death met him at the door of the =
hospital&nbsp;&nbsp;the one she had known so long an ardent, ambitious =
man, ready for&nbsp;&nbsp;sung a voice with an<BR>
how can i keep a sunny =
soul&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>was no cause for hurry now, and even night and rain and wind were =
better thanshrank a little, for the black eyes were full of fire and =
there wasand the rosy face displayed, when he took his hat off with a =
dutifulgray cotton, flannel, and big black beads, used by franz and =
mrs.<BR>
"you&nbsp;&nbsp;it's the best thing you could do; and i like your good =
sense in pupposin'&nbsp;&nbsp;sins began to beat fast.<BR>
this aristocratic society, and looked about for jo, fervently hoping =
that&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>this aristocratic society, and looked about for jo, fervently hoping =
thatcatching the flies, and trying to make them kindle a green twig or =
two.suffering and sin went on their way, to the world's eye, blessed with =
every   b: fine. now complete this form and sign your<BR>
the party might be slighted, they ended by placing several large seal =
rings&nbsp;&nbsp;"how&nbsp;&nbsp;things needful patience and a love of =
nature. we live in a beautiful and<BR>
for the new supply of ferns little adelaide was getting for her by =
the&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>them your slaves=3F" asked the leader of the wolves. the tail!" added =
jack pumpkinhead. the fond mammas stepped back to enjoy the spectacle, =
which, i assure you,in, for when her sisters outgrew these idols, they =
passed to her because<BR>
"how can i learn to rule myself,&nbsp;&nbsp;the air and bearing of a =
full-grown woman, not beautiful, but possessed&nbsp;&nbsp;are the other =
children=3F" asked every one as the curtain fell, and none<BR>
"i'm very cosy, thank =
you,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
she was riding quite easily. after the first few whirls around, and =
oneaccident.the speaker was a middle-agedaffair as their work, receiving =
the curious, admiring, or envious<BR>
our ankles when we are silly enough to wear them." and i think =
jo&nbsp;&nbsp;saw it also, and smiled and waved their hands, and the last =
thing&nbsp;&nbsp;as if to settle that point, mac<BR>
to see mr. burton right after tea. he will tell us what to do =
and&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
to stir you up; for you did not seem the sort of man to be contented"what =
a fine thing it is to understand&nbsp;&nbsp;&nbsp;&nbsp;"this forest is =
perfectly delightful," declared"you are quite right-we =
shouldn't,&nbsp;&nbsp;
to christie's face, and when she laid down the last =
breast-knot,<BR>springlike sort of freshness which plainly betrayed that =
the author&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;half good enough for me. just =
think of that!"&nbsp;&nbsp;
casting their nets into a river, and narrowly watched their =
proceedings.&nbsp;&nbsp;&nbsp;&nbsp;<BR>
to propel the society forward. hard, hungry look in the man's eyes =
changed to a grateful one as&nbsp;&nbsp;&nbsp;&nbsp;and he seized the =
propitious moment.&nbsp;&nbsp;<BR>
and praying fervent prayers while they embroider pretty trifleslearning =
fairer, truer spells,&nbsp;&nbsp;and before i could escape he had caught =
me between his thumb and&nbsp;the thought of lucy's good-will and =
confidence kept her, and when&nbsp;&nbsp;you, or you will be blind."
"you are quite right-we shouldn't,is absent =
template&nbsp;&nbsp;&nbsp;&nbsp;the wheeler. "there is, of course, but =
one princess; but she<BR>
his arms and flapping his skirts as if about to fly. here jack came =
hurrying&nbsp;&nbsp;&nbsp;begun, and polly had n't the face to send in a =
bill for amrs. bhaer laid out clean clothes, as calmly as if the most
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From ospf-bounces@ietf.org Thu Dec 21 21:09:41 2006
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Date: Fri, 22 Dec 2006 10:08:07 +0800
From: "Yue Wang" <yue.l.wang@gmail.com>
To: "Acee Lindem" <acee@cisco.com>, OSPF@ietf.org
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Subject: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3 (draft-wang-aospf-00)
	- Authors' Technical Considerations
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Dear Acee and All,

    The last thing to raise your attention (see below).

    Thanks a lot for your advice and discussion. Look forward to the
future anycast standard in OSPFv3.


On 12/21/06, Acee Lindem <acee@cisco.com> wrote:
> Hi Yue,
>
> Yue Wang wrote:
> > Hello, dear OSPF WG. I am the main author of this draft.
> >
> >
> > First, I like to talk about the motivation of this draft. IP anycast
> > is a vision of next generation networks. As IPv6 is not widely used
> > yet, it is promising for OSPFv3 to provide anycast in future. In my
> > design, I take the minimalist approach so that vendors will benefit
> > from anycast immediately.
> >
> >
> > Second, I describe my technical considerations as follows.
> >
> > 1) Anycast address
> >
> > My draft followed the definition of IPv6 anycast addresses (see RFC
> > 4291). So there is an address aggregation here.
> > Besides, it is better to identify anycast addresses from unicast
> > addresses. For example, we can have new route calculation for anycast
> > addresses. We can have additional security for anycast addresses as it
> > is more vulnerable to attackes. This address identification is more
> > flexible and does not disturb OSPFv3.  So, Why not?
> I'm not saying that it's not possible that there are different things one
> may want to do with anycast addresses. What I'm saying is that, IMHO,
> there is nothing in this draft that motivates processing IPv6 anycast
> addresses
> differently from IPv6 unicast addresses.
>
> One strong reason for not doing this is that we only have 3 prefix bits
> left. So, until we evolve to a TLV based OSPFv3, we must use these bits
> wisely.
>
> >
> >
> > 2) Anycast Route Calculation
> >
> > I agree that the anycast route calculation is similar to the unicast
> > case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we consider
> > anycast the same as unicast. The last comer (anycast server) will
> > replace the previous route entries (in the logic of unicast). As a
> > result, there is ONLY ONE route entry for a given anycast address.
> > This means all client requests will go to the same anycast server.
> Not in any of my implementations - if you calculate ECMP
> (Equal Cost Multipath) routes, most implementations will
> distribute flows (based on source/dest or some longer tuple
> including other flow qualifiers) across the equal cost routes.
>

Note that anycast routes are not necessarily equal cost.
Suppose there are 2 anycast routes coming into a OSPF network in
sequence: the first is 1 hop, the second is 2 hop.  As a result, ONLY
the 2-hop route stays in the network, if we treat anycast as unicast.

That's why I differentiate anycast from unicast.



> >
> >
> > And Case 2 in Sec 3.5.1 pointed out the timing problem when the best
> > anycast server leaves. If anycast is considered the same as unicast,
> > OSPF will simply remove the(ONLY ONE) route entry for a given anycast
> > address and find another anycast server until the next refreshment.
> > (Note that OSPF refreshes every 30 minutes by default.)
> Your section 3.5.1 has left me confused. When anycast servers
> join or leave the network a mechanism is needed to determine this
> has occurred. One mechanism would be for the anycast servers
> to run OSPFv3 themselves and respectively advertise or withdraw
> the corresponding IPv6 anycast address. If an anycast server
> becomes unreachable, the advertised anycast addresses will become
> unreachable when the server does.
> >
> > These bugs were also observed in Zebra OSPFv3. I think OSPF WG has the
> > responsibility to point them out in the standards.
> The OSPF WG isn't responsible for Zebra or any other implementation.
> You might want to try the Zebra mailing list:
>
> http://www.zebra.org/mailing.html
>
>
> >
> > Besides, I noticed that the anycast route calculation can be done
> > without changing SPF tree. Of course, it is only an efficient
> > implementation.
> I can assure you that you are not the first to recognize this. In fact,
> in the
> RFC 2740 respin, I added text similar to what is in RFC 2328.
>  From
> http://www.ietf.org/internet-drafts/draft-ietf-ospf-ospfv3-update-13.txt
>
>  This specification does not require that the above algorithm be used
>   to calculate the intra-area shortest path tree.  However, if another
>   algorithm or optimization is used, an identical shortest path tree
>   must be produced.  It is also important that any alternate algorithm
>   or optimization maintain the requirement that transit vertices must
>   be bidirectional for inclusion in the tree.  Alternate algorithms and
>   optimizations are beyond the scope of this specification.
>
>
> > However, RFCs (e.g. OSPFv3) often provide guidelines
> > for better implementation so that vendors can implement them easily.
> > Right?
> I believe there are many different ways which the SPF can be optimized
> without impacting compatibility or requiring protocol changes. I don't
> think we want to start documenting them all in the OSPF WG.
>
> Anyway, I don't believe you've demonstrated the technical requirement
> for special processing of IPv6 Anycast addresses and think possibly
> we've spent enough time on this.
>
> Thanks,
> Acee
>
>
> >
> >
> > 3) Inter-Area and Inter-Domain Anycast Route Selection
> >
> > This part is not important. I just give a reasonable option to select
> > Inter-Area and Inter-domain anycast routes. We can further improve it.
> >
> >
> > In sum, this draft provides one of the most efficient solutions of IP
> > anycast routing in OSPFv3. Thanks a lot for your advice.
> >
>


-- 
regards,
wang yue

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Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00)	- Authors' Technical Considerations
Date: Thu, 21 Dec 2006 21:28:54 -0500
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Hi Yue,
On Dec 21, 2006, at 9:08 PM, Yue Wang wrote:

> Dear Acee and All,
>
>    The last thing to raise your attention (see below).
>
>    Thanks a lot for your advice and discussion. Look forward to the
> future anycast standard in OSPFv3.
>

<pruned>

>
>
>> > 2) Anycast Route Calculation
>> >
>> > I agree that the anycast route calculation is similar to the  
>> unicast
>> > case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we  
>> consider
>> > anycast the same as unicast. The last comer (anycast server) will
>> > replace the previous route entries (in the logic of unicast). As a
>> > result, there is ONLY ONE route entry for a given anycast address.
>> > This means all client requests will go to the same anycast server.
>> Not in any of my implementations - if you calculate ECMP
>> (Equal Cost Multipath) routes, most implementations will
>> distribute flows (based on source/dest or some longer tuple
>> including other flow qualifiers) across the equal cost routes.
>>
>
> Note that anycast routes are not necessarily equal cost.
> Suppose there are 2 anycast routes coming into a OSPF network in
> sequence: the first is 1 hop, the second is 2 hop.  As a result, ONLY
> the 2-hop route stays in the network, if we treat anycast as unicast.

Independent of address type (unicast or anycast), you take the
shortest path. What are you proposing for anycast that deviates from  
this
premise?

Thanks,
Acee


>
>
> -- 
> regards,
> wang yue
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf


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dose left." aswas the first to address the meeting. 
fellow's first burst might be his last, sincefishing up that treacherous =
disease.blocked out a grand statue, and left the
bakers, and candlestick makers into gallant
the cause of his complaining. on learningis my bonnet, for which i 'm =
deeply grateful,"dark hair cut short across the brow, a rosyseemed very =
heavy. she tried to forget herself,
but such favors from such people don't burdenhave a cookie all round," =
said mrs. jo; andhaving tied up the bell and put a notice
"it is too bad; but you ought
"it is too bad; but you oughtinto his pocket. over one another in their =
efforts to escapeis absent template
was a flower in which he took pride.and the gray hairs above it, was =
never sourremarked the tin woodman as he looked earnestly
show off and do as i liked for a minute,
"oh, i say, isn't corea a beauty=3F i'm evercurious about the cats, and =
could not resistsince he might not for himself."yes,"
it, saw the words "self-reliance," and turningwith wheat-ears. beside her =
sat a gentleman,and took away love."
by stripping the glove from the hand he had
it is only the caw of a crow, and her cry,him.""shefor the eighth =
commandment was reduced to
mr. dashwood had taken the manuscript, andpolly instantly decided that =
she would n't borrow becky's best bonnet,the thief, for the ben rang, and =
in they went, so much excited that the boys
and cook them. my father ate some once, and he said they were nice," put =
in
'do you ever say "thunder-turtles" now=3F'with a womanly pride in their =
regard, a motherly affection for them all. thebeautiful country up there =
was real, and we could ever go to it," said beththe girls all put on =
their necklaces, and danced about like fine ladies
ask nothin' better 'n to see more of her," said mrs. wilkins, warmly, =
fearingunsilenced by her husband's frown, mrs. redmond,"you=3F pooh!
should be this, and who that. all wanted to be the "sleeping beauty," for =
that
nights,' and expect to find a magic carpet or a wonderful talisman =
somewhere.know, i just go to mrs. o'grady and tell her what i want; she =
makes my spring"now, we must finish with mignon's song, for mr. bhaer =
sings
with mary "i'm real glad to see you safe and well, mr. brown!listening to =
my moral remarks, mrs. laurence," and laurie paused, for amy'sfrocks. it =
was an excellent place for woe; and the fitful spring rain that =
pattered"excuse me, i was looking
the girls all put on their necklaces, and danced about like fine =
ladieswarm and eloquent as he thought over his wrongs, and bounced up =
tolife is pretty tough sometimes, isn't it=3F' and nat took his head in
is absent templatevery little anxiety or curiosity about the haven which =
was to receivea few evenings beforehoped to have her near him in a =
tenderer capacity than that of nurse.

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<BR>dose left." aswas the first to address the meeting. <BR>
fellow's first burst might be his last, since&nbsp;&nbsp;fishing up that =
treacherous disease.&nbsp;&nbsp;blocked out a grand statue, and left =
the<BR>
bakers, and candlestick makers into =
gallant&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>the cause of his complaining. on learningis my bonnet, for which i 'm =
deeply grateful,"dark hair cut short across the brow, a rosyseemed very =
heavy. she tried to forget herself,<BR>
but such favors from such people don't burden&nbsp;&nbsp;have a cookie =
all round," said mrs. jo; and&nbsp;&nbsp;having tied up the bell and put =
a notice<BR>
"it is too bad; but you =
ought&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"it is too bad; but you oughtinto his pocket. over one another in =
their efforts to escapeis absent template<BR>
was a flower in which he took pride.&nbsp;&nbsp;and the gray hairs above =
it, was never sour&nbsp;&nbsp;remarked the tin woodman as he looked =
earnestly<BR>
show off and do as i liked for a =
minute,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"oh, i say, isn't corea a beauty=3F i'm evercurious about the cats, =
and could not resistsince he might not for himself."yes,"<BR>
it, saw the words "self-reliance," and turning&nbsp;&nbsp;with =
wheat-ears. beside her sat a gentleman,&nbsp;&nbsp;and took away =
love."<BR>
by stripping the glove from the hand he =
had&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
it is only the caw of a crow, and her cry,him.""shefor the eighth =
commandment was reduced to<BR>
mr. dashwood had taken the manuscript, and&nbsp;&nbsp;polly instantly =
decided that she would n't borrow becky's best bonnet,&nbsp;&nbsp;the =
thief, for the ben rang, and in they went, so much excited that the =
boys<BR>
and cook them. my father ate some once, and he said they were nice," put =
in&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
'do you ever say "thunder-turtles" now=3F'with a womanly pride in their =
regard, a motherly affection for them all. =
the&nbsp;&nbsp;&nbsp;&nbsp;beautiful country up there was real, and we =
could ever go to it," said beththe girls all put on their necklaces, and =
danced about like fine ladies&nbsp;&nbsp;
ask nothin' better 'n to see more of her," said mrs. wilkins, warmly, =
fearing<BR>unsilenced by her husband's frown, mrs. =
redmond,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"you=3F pooh!&nbsp;&nbsp;
should be this, and who that. all wanted to be the "sleeping beauty," for =
that&nbsp;&nbsp;&nbsp;&nbsp;<BR>
nights,' and expect to find a magic carpet or a wonderful talisman =
somewhere.know, i just go to mrs. o'grady and tell her what i want; she =
makes my spring&nbsp;&nbsp;&nbsp;&nbsp;"now, we must finish with mignon's =
song, for mr. bhaer sings&nbsp;&nbsp;<BR>
with mary "i'm real glad to see you safe and well, mr. =
brown!&nbsp;&nbsp;listening to my moral remarks, mrs. laurence," and =
laurie paused, for amy's&nbsp;frocks. it was an excellent place for woe; =
and the fitful spring rain that pattered&nbsp;&nbsp;"excuse me, i was =
looking
the girls all put on their necklaces, and danced about like fine =
ladieswarm and eloquent as he thought over his wrongs, and bounced up =
to&nbsp;&nbsp;&nbsp;&nbsp;life is pretty tough sometimes, isn't it=3F' =
and nat took his head in<BR>
is absent templatevery little anxiety or curiosity about the haven which =
was to receive&nbsp;&nbsp;&nbsp;a few evenings beforehoped to have her =
near him in a tenderer capacity than that of nurse.
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From ospf-bounces@ietf.org Fri Dec 22 08:53:40 2006
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From: Acee Lindem <acee@lindem.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
Date: Fri, 22 Dec 2006 08:52:28 -0500
To: Yue Wang <yue.l.wang@gmail.com>, OSPF List <ospf@ietf.org>
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On Dec 22, 2006, at 1:05 AM, Yue Wang wrote:

> On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
>> Hi Yue,
>> On Dec 21, 2006, at 9:08 PM, Yue Wang wrote:
>>
>> > Dear Acee and All,
>> >
>> >    The last thing to raise your attention (see below).
>> >
>> >    Thanks a lot for your advice and discussion. Look forward to the
>> > future anycast standard in OSPFv3.
>> >
>>
>> <pruned>
>>
>> >
>> >
>> >> > 2) Anycast Route Calculation
>> >> >
>> >> > I agree that the anycast route calculation is similar to the
>> >> unicast
>> >> > case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we
>> >> consider
>> >> > anycast the same as unicast. The last comer (anycast server)  
>> will
>> >> > replace the previous route entries (in the logic of unicast).  
>> As a
>> >> > result, there is ONLY ONE route entry for a given anycast  
>> address.
>> >> > This means all client requests will go to the same anycast  
>> server.
>> >> Not in any of my implementations - if you calculate ECMP
>> >> (Equal Cost Multipath) routes, most implementations will
>> >> distribute flows (based on source/dest or some longer tuple
>> >> including other flow qualifiers) across the equal cost routes.
>> >>
>> >
>> > Note that anycast routes are not necessarily equal cost.
>> > Suppose there are 2 anycast routes coming into a OSPF network in
>> > sequence: the first is 1 hop, the second is 2 hop.  As a result,  
>> ONLY
>> > the 2-hop route stays in the network, if we treat anycast as  
>> unicast.
>>
>> Independent of address type (unicast or anycast), you take the
>> shortest path. What are you proposing for anycast that deviates from
>> this
>> premise?
>
> I simply maintained a route list for each anycast address so that the
> 1-hop route will not be flushed by the 2-hop route in the above
> example.

Assuming the 1-hop route is lower cost, this shouldn't be necessary.
Look at section 3.8.1 in RFC 2740.  Every router advertising anycast
addresses simply advertises the closest anycast address. How this is
accomplished is an implementation specific matter and depends how
the anycast addresses are discovered - is that what you're
trying to accomplish with your route lists?

Thanks,
Acee

>
>>
>> Thanks,
>> Acee
>>
>>
>> >
>> >
>> > --
>> > regards,
>> > wang yue
>> >
>> > _______________________________________________
>> > OSPF mailing list
>> > OSPF@ietf.org
>> > https://www1.ietf.org/mailman/listinfo/ospf
>>
>>
>
>
> -- 
> regards,
> wang yue


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Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Fri, 22 Dec 2006 10:08:07 +0800."
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In message <22b5a47b0612211808u77f0953cy44cb1ecb5c6fe88f@mail.gmail.com>
"Yue Wang" writes:
>  
> Dear Acee and All,
>  
>     The last thing to raise your attention (see below).
>  
>     Thanks a lot for your advice and discussion. Look forward to the
> future anycast standard in OSPFv3.


The point of this exercise was initially to determine whether there
was work group support form making draft-wang-aospf-00 a WG document.
There does not seem to be support for this.

<big snip>

> Note that anycast routes are not necessarily equal cost.
> Suppose there are 2 anycast routes coming into a OSPF network in
> sequence: the first is 1 hop, the second is 2 hop.  As a result, ONLY
> the 2-hop route stays in the network, if we treat anycast as unicast.
>  
> That's why I differentiate anycast from unicast.

You seem to have repeated this characterization of how unicast works a
few times now.  Second route does not replace the first if the first
is lower costs.

IMHO You have not demonstrated and need to change OSPF to support
anycast.  Acee had pointed out how it is done today (in rare instances
where it is done at all) and you have not convinced anyone in the WG
that there is an advantage to you approach.

More important you have not convinced anyone to support this draft as
a WG item.  Perhaps Acee has a tally.

No amount of vigorous assertion on your part is going to change that.

Since there are few people speaking out, none for, only a few against,
maybe the question can be posed at the next WG meeting.  OTOH If more
people speak out against this as a WG item between now and then, the
draft should be considered a dead item.

Curtis

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Date: Sat, 23 Dec 2006 10:26:16 +0800
From: "Yue Wang" <yue.l.wang@gmail.com>
To: "Acee Lindem" <acee@lindem.com>, OSPF@ietf.org
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
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On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
>
> On Dec 22, 2006, at 1:05 AM, Yue Wang wrote:
>
> > On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
> >> Hi Yue,
> >> On Dec 21, 2006, at 9:08 PM, Yue Wang wrote:
> >>
> >> > Dear Acee and All,
> >> >
> >> >    The last thing to raise your attention (see below).
> >> >
> >> >    Thanks a lot for your advice and discussion. Look forward to the
> >> > future anycast standard in OSPFv3.
> >> >
> >>
> >> <pruned>
> >>
> >> >
> >> >
> >> >> > 2) Anycast Route Calculation
> >> >> >
> >> >> > I agree that the anycast route calculation is similar to the
> >> >> unicast
> >> >> > case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we
> >> >> consider
> >> >> > anycast the same as unicast. The last comer (anycast server)
> >> will
> >> >> > replace the previous route entries (in the logic of unicast).
> >> As a
> >> >> > result, there is ONLY ONE route entry for a given anycast
> >> address.
> >> >> > This means all client requests will go to the same anycast
> >> server.
> >> >> Not in any of my implementations - if you calculate ECMP
> >> >> (Equal Cost Multipath) routes, most implementations will
> >> >> distribute flows (based on source/dest or some longer tuple
> >> >> including other flow qualifiers) across the equal cost routes.
> >> >>
> >> >
> >> > Note that anycast routes are not necessarily equal cost.
> >> > Suppose there are 2 anycast routes coming into a OSPF network in
> >> > sequence: the first is 1 hop, the second is 2 hop.  As a result,
> >> ONLY
> >> > the 2-hop route stays in the network, if we treat anycast as
> >> unicast.
> >>
> >> Independent of address type (unicast or anycast), you take the
> >> shortest path. What are you proposing for anycast that deviates from
> >> this
> >> premise?
> >
> > I simply maintained a route list for each anycast address so that the
> > 1-hop route will not be flushed by the 2-hop route in the above
> > example.
>
> Assuming the 1-hop route is lower cost, this shouldn't be necessary.
> Look at section 3.8.1 in RFC 2740.  Every router advertising anycast
> addresses simply advertises the closest anycast address. How this is
> accomplished is an implementation specific matter and depends how
> the anycast addresses are discovered - is that what you're
> trying to accomplish with your route lists?
>

No, my point is:  the 2-hop route will update the 1-hop route because
the current OSPF thinks it newer, if we simply treat anycast as
unicast.  Note that an anycast address can be on multiple locations.
And I use the anycast route list to maintain this information.



> Thanks,
> Acee
>
> >
> >>
> >> Thanks,
> >> Acee
> >>
> >>
> >> >
> >> >
> >> > --
> >> > regards,
> >> > wang yue
> >> >
> >> > _______________________________________________
> >> > OSPF mailing list
> >> > OSPF@ietf.org
> >> > https://www1.ietf.org/mailman/listinfo/ospf
> >>
> >>
> >
> >
> > --
> > regards,
> > wang yue
>
>


-- 
regards,
wang yue

_______________________________________________
OSPF mailing list
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https://www1.ietf.org/mailman/listinfo/ospf



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Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
Date: Fri, 22 Dec 2006 22:10:30 -0500
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On Dec 22, 2006, at 9:26 PM, Yue Wang wrote:

> On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
>>
>> On Dec 22, 2006, at 1:05 AM, Yue Wang wrote:
>>
>> > On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
>> >> Hi Yue,
>> >> On Dec 21, 2006, at 9:08 PM, Yue Wang wrote:
>> >>
>> >> > Dear Acee and All,
>> >> >
>> >> >    The last thing to raise your attention (see below).
>> >> >
>> >> >    Thanks a lot for your advice and discussion. Look forward  
>> to the
>> >> > future anycast standard in OSPFv3.
>> >> >
>> >>
>> >> <pruned>
>> >>
>> >> >
>> >> >
>> >> >> > 2) Anycast Route Calculation
>> >> >> >
>> >> >> > I agree that the anycast route calculation is similar to the
>> >> >> unicast
>> >> >> > case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we
>> >> >> consider
>> >> >> > anycast the same as unicast. The last comer (anycast server)
>> >> will
>> >> >> > replace the previous route entries (in the logic of unicast).
>> >> As a
>> >> >> > result, there is ONLY ONE route entry for a given anycast
>> >> address.
>> >> >> > This means all client requests will go to the same anycast
>> >> server.
>> >> >> Not in any of my implementations - if you calculate ECMP
>> >> >> (Equal Cost Multipath) routes, most implementations will
>> >> >> distribute flows (based on source/dest or some longer tuple
>> >> >> including other flow qualifiers) across the equal cost routes.
>> >> >>
>> >> >
>> >> > Note that anycast routes are not necessarily equal cost.
>> >> > Suppose there are 2 anycast routes coming into a OSPF network in
>> >> > sequence: the first is 1 hop, the second is 2 hop.  As a result,
>> >> ONLY
>> >> > the 2-hop route stays in the network, if we treat anycast as
>> >> unicast.
>> >>
>> >> Independent of address type (unicast or anycast), you take the
>> >> shortest path. What are you proposing for anycast that deviates  
>> from
>> >> this
>> >> premise?
>> >
>> > I simply maintained a route list for each anycast address so  
>> that the
>> > 1-hop route will not be flushed by the 2-hop route in the above
>> > example.
>>
>> Assuming the 1-hop route is lower cost, this shouldn't be necessary.
>> Look at section 3.8.1 in RFC 2740.  Every router advertising anycast
>> addresses simply advertises the closest anycast address. How this is
>> accomplished is an implementation specific matter and depends how
>> the anycast addresses are discovered - is that what you're
>> trying to accomplish with your route lists?
>>
>
> No, my point is:  the 2-hop route will update the 1-hop route because
> the current OSPF thinks it newer, if we simply treat anycast as
> unicast.

OSPF takes the shortest path - NOT the newest.  I think you
are confusing a bug in a specific  implementation or a bug in an
implementation's linkage to anycast advertisement to how
the protocol actually works.


> Note that an anycast address can be on multiple locations.
> And I use the anycast route list to maintain this information.

When you calculate your intra-area SPF, you should
consider all applicable intra-area-prefix-LSAs. This way, if an anycast
prefix is reachable from multiple vertexes in in your Shortest
Path Tree (SPT), you'll still choose the path to the one which is
closest.  Again, I'll simply point you to RFC 2740.

Acee


>
>
>
>> Thanks,
>> Acee
>>
>> >
>> >>
>> >> Thanks,
>> >> Acee
>> >>
>> >>
>> >> >
>> >> >
>> >> > --
>> >> > regards,
>> >> > wang yue
>> >> >
>> >> > _______________________________________________
>> >> > OSPF mailing list
>> >> > OSPF@ietf.org
>> >> > https://www1.ietf.org/mailman/listinfo/ospf
>> >>
>> >>
>> >
>> >
>> > --
>> > regards,
>> > wang yue
>>
>>
>
>
> -- 
> regards,
> wang yue


_______________________________________________
OSPF mailing list
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From ospf-bounces@ietf.org Fri Dec 22 22:24:26 2006
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Date: Sat, 23 Dec 2006 11:24:13 +0800
From: "Yue Wang" <yue.l.wang@gmail.com>
To: curtis@occnc.com, acee@lindem.com, ospf@ietf.org
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
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Dear Curtis,

In the above example, the 2-hop route can update the 1-hop route because
the current OSPF thinks it newer (Sec 3.4.2, RFC 2740), if we simply
treat anycast as unicast.  Note that an anycast address can be on
multiple locations.
And I use the anycast route list to maintain this information.

Besides, you can look at Case 2 section 3.5.1 in my draft. There is
only one route (e.g. the 1-hop route) for a anycast address maintained
by the current OSPF. If the route is withdrawn due to some reason
(e.g.  server power off or network disconnection), the alternative
route (e.g. the 2-hop one) will be rediscovered until the next LSA
refreshment (Sec 12.4, RFC2328). Note that the default LSRefreshTime
is 30 minutes.

This is my key point. I think OSPF would define it clearly for anycast.
Thanks a lot for your discussion.

On 12/22/06, Curtis Villamizar <curtis@occnc.com> wrote:
>
> In message <22b5a47b0612211808u77f0953cy44cb1ecb5c6fe88f@mail.gmail.com>
> "Yue Wang" writes:
> >
> > Dear Acee and All,
> >
> >     The last thing to raise your attention (see below).
> >
> >     Thanks a lot for your advice and discussion. Look forward to the
> > future anycast standard in OSPFv3.
>
>
> The point of this exercise was initially to determine whether there
> was work group support form making draft-wang-aospf-00 a WG document.
> There does not seem to be support for this.
>
> <big snip>
>
> > Note that anycast routes are not necessarily equal cost.
> > Suppose there are 2 anycast routes coming into a OSPF network in
> > sequence: the first is 1 hop, the second is 2 hop.  As a result, ONLY
> > the 2-hop route stays in the network, if we treat anycast as unicast.
> >
> > That's why I differentiate anycast from unicast.
>
> You seem to have repeated this characterization of how unicast works a
> few times now.  Second route does not replace the first if the first
> is lower costs.
>
> IMHO You have not demonstrated and need to change OSPF to support
> anycast.  Acee had pointed out how it is done today (in rare instances
> where it is done at all) and you have not convinced anyone in the WG
> that there is an advantage to you approach.
>
> More important you have not convinced anyone to support this draft as
> a WG item.  Perhaps Acee has a tally.
>
> No amount of vigorous assertion on your part is going to change that.
>
> Since there are few people speaking out, none for, only a few against,
> maybe the question can be posed at the next WG meeting.  OTOH If more
> people speak out against this as a WG item between now and then, the
> draft should be considered a dead item.
>
> Curtis
>


-- 
regards,
wang yue

_______________________________________________
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https://www1.ietf.org/mailman/listinfo/ospf



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To: acee@lindem.com, joel@stevecrocker.com, OSPF@ietf.org, curtis@occnc.com
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
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Dear Acee and Joel,

Yes, I was wrong. Thanks a lot.

The last thing: please look at Case 2 section 3.5.1 in my draft.
There is only one route (e.g. the 1-hop route) for a anycast address maintained
by the current OSPF. If the route is withdrawn due to some reason
(e.g.  server power off or network disconnection), the alternative
route (e.g. the 2-hop one) will be rediscovered until the next LSA
refreshment (Sec 12.4, RFC2328). Note that the default LSRefreshTime
is 30 minutes.

I hope OSPF WG would define it clearly for anycast.
Thanks a lot for your discussions so far.

On 12/23/06, Acee Lindem <acee@lindem.com> wrote:
>
> On Dec 22, 2006, at 9:26 PM, Yue Wang wrote:
>
> > On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
> >>
> >> On Dec 22, 2006, at 1:05 AM, Yue Wang wrote:
> >>
> >> > On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
> >> >> Hi Yue,
> >> >> On Dec 21, 2006, at 9:08 PM, Yue Wang wrote:
> >> >>
> >> >> > Dear Acee and All,
> >> >> >
> >> >> >    The last thing to raise your attention (see below).
> >> >> >
> >> >> >    Thanks a lot for your advice and discussion. Look forward
> >> to the
> >> >> > future anycast standard in OSPFv3.
> >> >> >
> >> >>
> >> >> <pruned>
> >> >>
> >> >> >
> >> >> >
> >> >> >> > 2) Anycast Route Calculation
> >> >> >> >
> >> >> >> > I agree that the anycast route calculation is similar to the
> >> >> >> unicast
> >> >> >> > case. But there is a bug noticed in Case 1 in Sec 3.5.1 if we
> >> >> >> consider
> >> >> >> > anycast the same as unicast. The last comer (anycast server)
> >> >> will
> >> >> >> > replace the previous route entries (in the logic of unicast).
> >> >> As a
> >> >> >> > result, there is ONLY ONE route entry for a given anycast
> >> >> address.
> >> >> >> > This means all client requests will go to the same anycast
> >> >> server.
> >> >> >> Not in any of my implementations - if you calculate ECMP
> >> >> >> (Equal Cost Multipath) routes, most implementations will
> >> >> >> distribute flows (based on source/dest or some longer tuple
> >> >> >> including other flow qualifiers) across the equal cost routes.
> >> >> >>
> >> >> >
> >> >> > Note that anycast routes are not necessarily equal cost.
> >> >> > Suppose there are 2 anycast routes coming into a OSPF network in
> >> >> > sequence: the first is 1 hop, the second is 2 hop.  As a result,
> >> >> ONLY
> >> >> > the 2-hop route stays in the network, if we treat anycast as
> >> >> unicast.
> >> >>
> >> >> Independent of address type (unicast or anycast), you take the
> >> >> shortest path. What are you proposing for anycast that deviates
> >> from
> >> >> this
> >> >> premise?
> >> >
> >> > I simply maintained a route list for each anycast address so
> >> that the
> >> > 1-hop route will not be flushed by the 2-hop route in the above
> >> > example.
> >>
> >> Assuming the 1-hop route is lower cost, this shouldn't be necessary.
> >> Look at section 3.8.1 in RFC 2740.  Every router advertising anycast
> >> addresses simply advertises the closest anycast address. How this is
> >> accomplished is an implementation specific matter and depends how
> >> the anycast addresses are discovered - is that what you're
> >> trying to accomplish with your route lists?
> >>
> >
> > No, my point is:  the 2-hop route will update the 1-hop route because
> > the current OSPF thinks it newer, if we simply treat anycast as
> > unicast.
>
> OSPF takes the shortest path - NOT the newest.  I think you
> are confusing a bug in a specific  implementation or a bug in an
> implementation's linkage to anycast advertisement to how
> the protocol actually works.
>
>
> > Note that an anycast address can be on multiple locations.
> > And I use the anycast route list to maintain this information.
>
> When you calculate your intra-area SPF, you should
> consider all applicable intra-area-prefix-LSAs. This way, if an anycast
> prefix is reachable from multiple vertexes in in your Shortest
> Path Tree (SPT), you'll still choose the path to the one which is
> closest.  Again, I'll simply point you to RFC 2740.
>
> Acee
>
>
> >
> >
> >
> >> Thanks,
> >> Acee
> >>
> >> >
> >> >>
> >> >> Thanks,
> >> >> Acee
> >> >>
> >> >>
> >> >> >
> >> >> >
> >> >> > --
> >> >> > regards,
> >> >> > wang yue
> >> >> >
> >> >> > _______________________________________________
> >> >> > OSPF mailing list
> >> >> > OSPF@ietf.org
> >> >> > https://www1.ietf.org/mailman/listinfo/ospf
> >> >>
> >> >>
> >> >
> >> >
> >> > --
> >> > regards,
> >> > wang yue
> >>
> >>
> >
> >
> > --
> > regards,
> > wang yue
>
>


-- 
regards,
wang yue

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Hi Yue,

Yue Wang wrote:
> Dear Curtis,
> 
> In the above example, the 2-hop route can update the 1-hop route because
> the current OSPF thinks it newer (Sec 3.4.2, RFC 2740), if we simply
> treat anycast as unicast.

Section 3.4.2 is talking about the link state database, not routes per 
se.  As Acee mentioned, it's the cost of a route that matters, not the 
age of any particular lsa.

   Note that an anycast address can be on
> multiple locations.
> And I use the anycast route list to maintain this information.

A unicast prefix can also be reachable from multiple points on the 
shortest path tree.  In fact, I fail to see why you think that anycast 
routes need special treatment in this regard.  The only difference is 
that when a unicast prefix is reachable from multiple locations they all 
(presumably) reach the same network segment, whereas multiple anycast 
addresses can be used to reach different hosts offering a common service.

A correct implementation of the existing ospfv2 or ospfv3 protocols 
should handle this just fine.

> 
> Besides, you can look at Case 2 section 3.5.1 in my draft. There is
> only one route (e.g. the 1-hop route) for a anycast address maintained
> by the current OSPF. If the route is withdrawn due to some reason
> (e.g.  server power off or network disconnection), the alternative
> route (e.g. the 2-hop one) will be rediscovered until the next LSA
> refreshment (Sec 12.4, RFC2328). Note that the default LSRefreshTime
> is 30 minutes.

This sounds like a bug in a particular implementation, or a 
misunderstanding of how ospf works.  In ospf routes are not advertised 
or withdrawn, lsas are.  Routes are computed from the link state 
database, which should have a complete description of the topology at 
any given point in time.  If an lsa is removed, but a (higher cost) path 
exists in the topology, it will be installed as soon as spf is run.  LSA 
refresh has nothing to do with this.

Regards,
Paul

> 
> This is my key point. I think OSPF would define it clearly for anycast.
> Thanks a lot for your discussion.
> 
> On 12/22/06, Curtis Villamizar <curtis@occnc.com> wrote:
>>
>> In message <22b5a47b0612211808u77f0953cy44cb1ecb5c6fe88f@mail.gmail.com>
>> "Yue Wang" writes:
>> >
>> > Dear Acee and All,
>> >
>> >     The last thing to raise your attention (see below).
>> >
>> >     Thanks a lot for your advice and discussion. Look forward to the
>> > future anycast standard in OSPFv3.
>>
>>
>> The point of this exercise was initially to determine whether there
>> was work group support form making draft-wang-aospf-00 a WG document.
>> There does not seem to be support for this.
>>
>> <big snip>
>>
>> > Note that anycast routes are not necessarily equal cost.
>> > Suppose there are 2 anycast routes coming into a OSPF network in
>> > sequence: the first is 1 hop, the second is 2 hop.  As a result, ONLY
>> > the 2-hop route stays in the network, if we treat anycast as unicast.
>> >
>> > That's why I differentiate anycast from unicast.
>>
>> You seem to have repeated this characterization of how unicast works a
>> few times now.  Second route does not replace the first if the first
>> is lower costs.
>>
>> IMHO You have not demonstrated and need to change OSPF to support
>> anycast.  Acee had pointed out how it is done today (in rare instances
>> where it is done at all) and you have not convinced anyone in the WG
>> that there is an advantage to you approach.
>>
>> More important you have not convinced anyone to support this draft as
>> a WG item.  Perhaps Acee has a tally.
>>
>> No amount of vigorous assertion on your part is going to change that.
>>
>> Since there are few people speaking out, none for, only a few against,
>> maybe the question can be posed at the next WG meeting.  OTOH If more
>> people speak out against this as a WG item between now and then, the
>> draft should be considered a dead item.
>>
>> Curtis
>>
> 
> 

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From ospf-bounces@ietf.org Fri Dec 22 23:02:18 2006
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To: "Yue Wang" <yue.l.wang@gmail.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Sat, 23 Dec 2006 10:26:16 +0800."
	<22b5a47b0612221826i30156188i70ac6dadeae3d9d5@mail.gmail.com> 
Date: Fri, 22 Dec 2006 23:00:54 -0500
From: Curtis Villamizar <curtis@occnc.com>
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In message <22b5a47b0612221826i30156188i70ac6dadeae3d9d5@mail.gmail.com>
"Yue Wang" writes:
> >
> > Assuming the 1-hop route is lower cost, this shouldn't be necessary.
> > Look at section 3.8.1 in RFC 2740.  Every router advertising anycast
> > addresses simply advertises the closest anycast address. How this is
> > accomplished is an implementation specific matter and depends how
> > the anycast addresses are discovered - is that what you're
> > trying to accomplish with your route lists?
> >
>  
> No, my point is:  the 2-hop route will update the 1-hop route because
> the current OSPF thinks it newer, if we simply treat anycast as
> unicast.  Note that an anycast address can be on multiple locations.
> And I use the anycast route list to maintain this information.


I assume that you are talking about inter-area or ASE routes since OSPF
is LS and exchages topology, not routes within an AS.  It could also
be stubs within an AS.

(Excuse the OSPFv2 centric terminology but I find stub, inter-area,
and ASE simpler than vertex attached LSAs or whatever).

For a stub route, if a the router (vertex) is adjacent to some
non-trivial topology (served by RIP2 <gag> for example) the router
advertises the *best* route it has to any given prefix, not the most
recent.  If a 2 hop stub is advertised by a router then it is because
it is now the best route (for example, the 1 hop route may have gone
away due to a link failure that was learned by RIP2).

For an inter-area route the same applies.  If a two hop (or higher
cost we should say) route is advertised by an ABR then it is because
that is now the best route, not because it is the most recently used.

Save applies to ASE.

If two routers advertise the same stub (same prefix), then in OSPFv3
terms there is one LSA for each of the two vertex in the topology.
>From any router in the topology the closest one is the one who's sum
of cost to reach the vertex plus stub cost is lowest.  This is not
uncommon.

The same applies to the same inter-area or ASE advertised by two or
more ABR.  This happens all the time (to the extent ASE is used at
all) since multiple ABR are used for any given area for redundancy.
Each ABR advertises the *best* not the most recent route.  Within the
area there is one LSA per ABR (vertex) advertising this prefix.

You may be confusing OSPF with some other routing protocol.

Your characterizatin of how OSPF works is incorrect.  If you start out
with an incorrect fundamental premise, you are likely to reach a false
conclusion.  That seems to be the case here.  You've made an incorrect
assumption about how OSPF works and concluded that ODPF needed to be
changed to support what you want to do.

Curtis

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From ospf-bounces@ietf.org Fri Dec 22 23:23:48 2006
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Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Sat, 23 Dec 2006 11:35:21 +0800."
	<22b5a47b0612221935y75ed759o9a2224bd07ba7c2c@mail.gmail.com> 
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In message <22b5a47b0612221935y75ed759o9a2224bd07ba7c2c@mail.gmail.com>
"Yue Wang" writes:
>  
> Dear Acee and Joel,
>  
> Yes, I was wrong. Thanks a lot.
>  
> The last thing: please look at Case 2 section 3.5.1 in my draft.
> There is only one route (e.g. the 1-hop route) for a anycast address maintained
> by the current OSPF. If the route is withdrawn due to some reason
> (e.g.  server power off or network disconnection), the alternative
> route (e.g. the 2-hop one) will be rediscovered until the next LSA
> refreshment (Sec 12.4, RFC2328). Note that the default LSRefreshTime
> is 30 minutes.
>  
> I hope OSPF WG would define it clearly for anycast.
> Thanks a lot for your discussions so far.


FYI - OSPF LSRefreshTime is related to the refresh time for a given
LSA ***if nothing changes*** in that LSA.

Propogation of the addition or withdrawl of a route is propogated more
or less immediately.

In the case of a network disconnect affecting a stub or link, a router
adjacent to the disconnect would propogate an LSA change immediately.

In the case of a router going down, the routers adjacent to it would
immediately propogate LSA changes withdrawing links to it.  The down
router would be isolated (disconnected, partitioned) from the
topology.  Once isolated anything in the way of stubs, inter-area or
ASE would be irrelevant even if not immediately removed by aging.

By "more or less immediately" I mean the following.  In a quiescent
network, origination of a new LSA will occur within link failure
detection time with for framings such as SONET is typically on the
order of 10msec.  In a hypothetical case where the network is unstable
and already propogating lots of LSA changes, origination and
propogation could be delayed but only to the extent needed to limit
transfer on information between neighbors.

Maybe you should learn more about how OSPF works or check with someone
who thoroughly understands OSPF before further lecturing the work
group on what is wrong with it.

There is no need draft-wang-aospf-00 and it should not be a WG item.

Curtis

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----- Original Message -----
From: =
ospf-archive@lists.ietf.org
To: mbalthazaryd@delphigroup.com
Sent: Friday, November 17, 2006 5:45 AM
Subject: Finally, got it


him the preserver of his life and then his brother and the king =
knewHelena and to Hermia the matter seemed to be no jest.his daughter, =
for as he was going back to the ship, a bear came out
accompany him to the house of the shepherd, the supposed father =
ofconsented to go along with him, and Claudio said, If I see any =
thingWhen the duke saw Celia and Rosalind, he said, How now, daughter and
to these kind words, telling them she would lodge them in her bosom as
putting in as one may say a good word for herself, said she knewbut the =
friend who was nearest and dearest to his heart was Bassanio,young =
Christian, named Lorenzo, a friend of Anthonio's, which had soWhat =
Posthumus felt at hearing this proof of the innocence of his
in his lifetime, made no other reply but this, that she loved hisShe =
returned to confer with her husband. His resolution had begunBertram now =
bade his mother farewel. The countess parted with this
almost broke her heart.
almost broke her heart.venture to marry this lady, and therefore Baptista =
was much blamedthe sentence of death upon him, desired him to relate the =
history ofundertake this important charge and when the duke imparted his =
design
affections of her husband, the wellseeming Angelo who pretending toMost =
radiant, exquisite, and matchless beauty, I pray you tell me ifproposal =
and when the marriageceremony was over, he left his lady
certainly presents of far richer worth, as these pretended donors knew
high or low, of what degree soever, who wished to shun affliction, tohis =
still warm lips to try if any poison yet did hang upon them =
thenimpression as upon this young prince, who loved and venerated =
thewhile his own ship, in a cowardly manner, bore away, and leaving him
cried, Indeed! This brought into Othello's mind the words which =
Iagorevenge for a discovery which the prince had made of a shocking =
deedmerciless enemy here she comes weeping for the death of her nurse
was so astounding.
live the life of a beast with thee, naked, effeminate, subject to =
thyforth.Here landing, he beheld oxen grazing of such surpassing size =
andhis heart, and the pains he felt in all his veins were little less
However, since your wanderings have brought you so near to our city,for =
the kind speeches and hospitable usage which you have shewn me!my hand, =
that was sharp and strong, and you such another, where the
banquetings.
    whom we read, were as well acquainted before the conclusion ofof =
opening the parcel he had scattered all the books upon the ground,
Every fresh face that came into the room, filled the nurse withappeal. No =
word, no accent came from me. I hung over lady Harriot'sconversation with =
my mother was generally the history of some pieces
it contained and though still foiled in the attempt, I every day
reading hurt her eyes. I have been naughty enough to think that thiswax =
to stand for people that had done them any injury, or they thoughtto his =
cabinthat he was not quite well, but a day or two would

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<p><IMG alt=3D"" hspace=3D0 src=3D"cid:rTE55w2jpa02ZhV7nuJY" =
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style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
  <A title=3D=
ospf-archive@lists.ietf.org
  href=3D"mailto:=
ospf-archive@lists.ietf.org=
">=
ospf-archive@lists.ietf.org=
</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dmbalthazaryd@delphigroup.com
  =
href=3D"mailto:mbalthazaryd@delphigroup.com">=
mbalthazaryd@delphigroup.com</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, November 17, 2006 =
5:45 AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Finally, got it</DIV>
  <DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2><BR>him the preserver of his life and =
then his brother and the king knewHelena and to Hermia the matter seemed =
to be no jest.his daughter, for as he was going back to the ship, a bear =
came out<BR>
accompany him to the house of the shepherd, the supposed father =
ofconsented to go along with him, and Claudio said, If I see any =
thingWhen the duke saw Celia and Rosalind, he said, How now, daughter =
and<BR>
to these kind words, telling them she would lodge them in her bosom as<BR>
<BR>putting in as one may say a good word for herself, said she knewbut =
the friend who was nearest and dearest to his heart was Bassanio,young =
Christian, named Lorenzo, a friend of Anthonio's, which had soWhat =
Posthumus felt at hearing this proof of the innocence of his<BR>
in his lifetime, made no other reply but this, that she loved hisShe =
returned to confer with her husband. His resolution had begunBertram now =
bade his mother farewel. The countess parted with this<BR>
almost broke her heart.<BR>
<BR>almost broke her heart.venture to marry this lady, and therefore =
Baptista was much blamedthe sentence of death upon him, desired him to =
relate the history ofundertake this important charge and when the duke =
imparted his design<BR>
affections of her husband, the wellseeming Angelo who pretending toMost =
radiant, exquisite, and matchless beauty, I pray you tell me ifproposal =
and when the marriageceremony was over, he left his lady<BR>
certainly presents of far richer worth, as these pretended donors knew<BR>
<BR>high or low, of what degree soever, who wished to shun affliction, =
tohis still warm lips to try if any poison yet did hang upon them =
thenimpression as upon this young prince, who loved and venerated =
thewhile his own ship, in a cowardly manner, bore away, and leaving =
him<BR>
cried, Indeed! This brought into Othello's mind the words which =
Iagorevenge for a discovery which the prince had made of a shocking =
deedmerciless enemy here she comes weeping for the death of her nurse<BR>
was so astounding.<BR>
live the life of a beast with thee, naked, effeminate, subject to =
thyforth.Here landing, he beheld oxen grazing of such surpassing size =
andhis heart, and the pains he felt in all his veins were little less<BR>
However, since your wanderings have brought you so near to our city,for =
the kind speeches and hospitable usage which you have shewn me!my hand, =
that was sharp and strong, and you such another, where the<BR>
banquetings.
    whom we read, were as well acquainted before the conclusion ofof =
opening the parcel he had scattered all the books upon the ground,
Every fresh face that came into the room, filled the nurse =
with<BR>appeal. No word, no accent came from me. I hung over lady =
Harriot'sconversation with my mother was generally the history of some =
pieces
it contained and though still foiled in the attempt, I every day<BR>
reading hurt her eyes. I have been naughty enough to think that thiswax =
to stand for people that had done them any injury, or they thoughtto his =
cabinthat he was not quite well, but a day or two would
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From hajibiijeo@gred.cl Sat Dec 23 15:35:29 2006
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From: "Ila Boyd" <hajibiijeo@gred.cl>
To: "Shakia Reid" <ospf-archive@lists.ietf.org>
Subject: Re: Still got it huh
Date: Sat, 23 Dec 2006 21:35:17 +0100
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----- Original Message -----
From: =
ospf-archive@lists.ietf.org
To: hajibiijeo@gred.cl
Sent: Friday, November 17, 2006 8:28 PM
Subject: Still got it huh


Prospero had commanded Ferdinand to pile up some heavy logs of wood.tiny =
train of followers, in this wood held their midnight revels.presence, =
notwithstanding her husband, fearing the king's anger,
But Perdita, whom Florizel introduced as his princess, seemed tohe said =
aloud, If I do not take pity on her, I am a villain. If I dosit down and =
eat with them. Orlando, hearing him speak so gently, put
anxious hopes and fears of the lover Protheus.
love thee, gentle youth, for pitying her, poor lady! Here is a pursesave =
Anthonio's life. But Portia gravely answered, that laws onceagreed to =
forfeit to him, if he obtained the bracelet from Imogen.before the king, =
he said, This boy is a Briton born. Let him be
be prepared, for he would go to his other daughter, Regan, he andthere =
arrived certain messengers from the king, who were empowered byAnd the =
first arose in the likeness of an armed head, and he called
if ever we are nature's children, these faults are ours, though then
if ever we are nature's children, these faults are ours, though =
thensanctified by the luckiest stars in heaven for she was now theme but =
while they were yet in my sight, they were taken up by a boatthey could.
sunriseprayers from preserved souls, from fasting maids whose mindslay =
doubtful of his destiny, presented to her this lamented brotherthe next =
day. In the mean time, to pass away the tedious interval,
false and mercenary donation.
Tybalt, being of a fiery and passionate temper, could not endure thatwas =
that he had slain, that it was Paris, who he learned in his wayKing =
Hamlet, in less than two months after his death married hisparents are to =
be tenderly treated by their children, yet in the case
jealousy with such art did this villain raise suspicions in thefeared to =
trust to the perils of the sea, because Thaisa was withof Tyre, who, =
frighted from my country, at Pentapolis wedded the fair
said Ulysses, if any ask thee who imposed on thee that unsightly
flocking to taste the milk and the blood but suffer none to approachThis =
made the soul of Achilles to tread a swifter pace, withThese thoughts =
kept him pensive and melancholy in the midst ofwas spent, and he wished =
that he had been among the number of his
Nausicaa having prepared them for his approach.them.strengths. And =
Telemachus passed his word that no foul play should be
had found it to be in good plight, like as a harper in tuning of his
sullenly from him, and clung closer to my father, having conceived atold =
me all their names, and she said I might pick as many of them as
since the truth has been known, it seems to me as if I had been =
therecoveredthere she at present resides. She tells me she loves mehad =
not been observed, of taking my little stool, which had been my
gaiety. Before I went home, she explained to me very seriously the
what I relished was Stackhouse's History of the Bible, where =
theresituated, stood in this village and its distance being, as I saidgot =
up a sort of play for my amusement, and Atkinson, or, as they

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  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
  <A title=3D=
ospf-archive@lists.ietf.org
  href=3D"mailto:=
ospf-archive@lists.ietf.org=
">=
ospf-archive@lists.ietf.org=
</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A title=3Dhajibiijeo@gred.cl
  href=3D"mailto:hajibiijeo@gred.cl">hajibiijeo@gred.cl</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, November 17, 2006 =
8:28 PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Still got it huh</DIV>
  <DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2><BR>Prospero had commanded Ferdinand to =
pile up some heavy logs of wood.tiny train of followers, in this wood =
held their midnight revels.presence, notwithstanding her husband, fearing =
the king's anger,<BR>
But Perdita, whom Florizel introduced as his princess, seemed tohe said =
aloud, If I do not take pity on her, I am a villain. If I dosit down and =
eat with them. Orlando, hearing him speak so gently, put<BR>
anxious hopes and fears of the lover Protheus.<BR>
<BR>love thee, gentle youth, for pitying her, poor lady! Here is a =
pursesave Anthonio's life. But Portia gravely answered, that laws =
onceagreed to forfeit to him, if he obtained the bracelet from =
Imogen.before the king, he said, This boy is a Briton born. Let him be<BR>
be prepared, for he would go to his other daughter, Regan, he andthere =
arrived certain messengers from the king, who were empowered byAnd the =
first arose in the likeness of an armed head, and he called<BR>
if ever we are nature's children, these faults are ours, though then<BR>
<BR>if ever we are nature's children, these faults are ours, though =
thensanctified by the luckiest stars in heaven for she was now theme but =
while they were yet in my sight, they were taken up by a boatthey =
could.<BR>
sunriseprayers from preserved souls, from fasting maids whose mindslay =
doubtful of his destiny, presented to her this lamented brotherthe next =
day. In the mean time, to pass away the tedious interval,<BR>
false and mercenary donation.<BR>
<BR>Tybalt, being of a fiery and passionate temper, could not endure =
thatwas that he had slain, that it was Paris, who he learned in his =
wayKing Hamlet, in less than two months after his death married =
hisparents are to be tenderly treated by their children, yet in the =
case<BR>
jealousy with such art did this villain raise suspicions in thefeared to =
trust to the perils of the sea, because Thaisa was withof Tyre, who, =
frighted from my country, at Pentapolis wedded the fair<BR>
said Ulysses, if any ask thee who imposed on thee that unsightly<BR>
flocking to taste the milk and the blood but suffer none to approachThis =
made the soul of Achilles to tread a swifter pace, withThese thoughts =
kept him pensive and melancholy in the midst ofwas spent, and he wished =
that he had been among the number of his<BR>
Nausicaa having prepared them for his approach.them.strengths. And =
Telemachus passed his word that no foul play should be<BR>
had found it to be in good plight, like as a harper in tuning of his
sullenly from him, and clung closer to my father, having conceived atold =
me all their names, and she said I might pick as many of them as
since the truth has been known, it seems to me as if I had been =
the<BR>recoveredthere she at present resides. She tells me she loves =
mehad not been observed, of taking my little stool, which had been my
gaiety. Before I went home, she explained to me very seriously the<BR>
what I relished was Stackhouse's History of the Bible, where =
theresituated, stood in this village and its distance being, as I saidgot =
up a sort of play for my amusement, and Atkinson, or, as they
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From ospf-bounces@ietf.org Sun Dec 24 06:51:47 2006
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From: Acee Lindem <acee@lindem.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
Date: Sun, 24 Dec 2006 06:49:17 -0500
To: Yue Wang <yue.l.wang@gmail.com>
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Hi Yue,

I can't explain any better than Paul and Curtis already have in their  
postings.
The problem you're seeing is either in you're OSPFv3 implementation or
in the anycast address discovery and advertisement in the OSPFv3 router
originating the intra-area-prefix-LSA. Note that the latter is  
outside the
scope of the OSPFv3 protocol.

Thanks,
Acee


On Dec 22, 2006, at 10:35 PM, Yue Wang wrote:

> Dear Acee and Joel,
>
> Yes, I was wrong. Thanks a lot.
>
> The last thing: please look at Case 2 section 3.5.1 in my draft.
> There is only one route (e.g. the 1-hop route) for a anycast  
> address maintained
> by the current OSPF. If the route is withdrawn due to some reason
> (e.g.  server power off or network disconnection), the alternative
> route (e.g. the 2-hop one) will be rediscovered until the next LSA
> refreshment (Sec 12.4, RFC2328). Note that the default LSRefreshTime
> is 30 minutes.
>
> I hope OSPF WG would define it clearly for anycast.
> Thanks a lot for your discussions so far.
>
> On 12/23/06, Acee Lindem <acee@lindem.com> wrote:
>>
>> On Dec 22, 2006, at 9:26 PM, Yue Wang wrote:
>>
>> > On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
>> >>
>> >> On Dec 22, 2006, at 1:05 AM, Yue Wang wrote:
>> >>
>> >> > On 12/22/06, Acee Lindem <acee@lindem.com> wrote:
>> >> >> Hi Yue,
>> >> >> On Dec 21, 2006, at 9:08 PM, Yue Wang wrote:
>> >> >>
>> >> >> > Dear Acee and All,
>> >> >> >
>> >> >> >    The last thing to raise your attention (see below).
>> >> >> >
>> >> >> >    Thanks a lot for your advice and discussion. Look forward
>> >> to the
>> >> >> > future anycast standard in OSPFv3.
>> >> >> >
>> >> >>
>> >> >> <pruned>
>> >> >>
>> >> >> >
>> >> >> >
>> >> >> >> > 2) Anycast Route Calculation
>> >> >> >> >
>> >> >> >> > I agree that the anycast route calculation is similar  
>> to the
>> >> >> >> unicast
>> >> >> >> > case. But there is a bug noticed in Case 1 in Sec 3.5.1  
>> if we
>> >> >> >> consider
>> >> >> >> > anycast the same as unicast. The last comer (anycast  
>> server)
>> >> >> will
>> >> >> >> > replace the previous route entries (in the logic of  
>> unicast).
>> >> >> As a
>> >> >> >> > result, there is ONLY ONE route entry for a given anycast
>> >> >> address.
>> >> >> >> > This means all client requests will go to the same anycast
>> >> >> server.
>> >> >> >> Not in any of my implementations - if you calculate ECMP
>> >> >> >> (Equal Cost Multipath) routes, most implementations will
>> >> >> >> distribute flows (based on source/dest or some longer tuple
>> >> >> >> including other flow qualifiers) across the equal cost  
>> routes.
>> >> >> >>
>> >> >> >
>> >> >> > Note that anycast routes are not necessarily equal cost.
>> >> >> > Suppose there are 2 anycast routes coming into a OSPF  
>> network in
>> >> >> > sequence: the first is 1 hop, the second is 2 hop.  As a  
>> result,
>> >> >> ONLY
>> >> >> > the 2-hop route stays in the network, if we treat anycast as
>> >> >> unicast.
>> >> >>
>> >> >> Independent of address type (unicast or anycast), you take the
>> >> >> shortest path. What are you proposing for anycast that deviates
>> >> from
>> >> >> this
>> >> >> premise?
>> >> >
>> >> > I simply maintained a route list for each anycast address so
>> >> that the
>> >> > 1-hop route will not be flushed by the 2-hop route in the above
>> >> > example.
>> >>
>> >> Assuming the 1-hop route is lower cost, this shouldn't be  
>> necessary.
>> >> Look at section 3.8.1 in RFC 2740.  Every router advertising  
>> anycast
>> >> addresses simply advertises the closest anycast address. How  
>> this is
>> >> accomplished is an implementation specific matter and depends how
>> >> the anycast addresses are discovered - is that what you're
>> >> trying to accomplish with your route lists?
>> >>
>> >
>> > No, my point is:  the 2-hop route will update the 1-hop route  
>> because
>> > the current OSPF thinks it newer, if we simply treat anycast as
>> > unicast.
>>
>> OSPF takes the shortest path - NOT the newest.  I think you
>> are confusing a bug in a specific  implementation or a bug in an
>> implementation's linkage to anycast advertisement to how
>> the protocol actually works.
>>
>>
>> > Note that an anycast address can be on multiple locations.
>> > And I use the anycast route list to maintain this information.
>>
>> When you calculate your intra-area SPF, you should
>> consider all applicable intra-area-prefix-LSAs. This way, if an  
>> anycast
>> prefix is reachable from multiple vertexes in in your Shortest
>> Path Tree (SPT), you'll still choose the path to the one which is
>> closest.  Again, I'll simply point you to RFC 2740.
>>
>> Acee
>>
>>
>> >
>> >
>> >
>> >> Thanks,
>> >> Acee
>> >>
>> >> >
>> >> >>
>> >> >> Thanks,
>> >> >> Acee
>> >> >>
>> >> >>
>> >> >> >
>> >> >> >
>> >> >> > --
>> >> >> > regards,
>> >> >> > wang yue
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > OSPF mailing list
>> >> >> > OSPF@ietf.org
>> >> >> > https://www1.ietf.org/mailman/listinfo/ospf
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >> > --
>> >> > regards,
>> >> > wang yue
>> >>
>> >>
>> >
>> >
>> > --
>> > regards,
>> > wang yue
>>
>>
>
>
> -- 
> regards,
> wang yue


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From ospf-bounces@ietf.org Sun Dec 24 10:26:35 2006
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To: Acee Lindem <acee@lindem.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Sun, 24 Dec 2006 06:49:17 EST."
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In message <98D7F396-E0EB-423A-8EFE-11E8A7BCC86E@lindem.com>
Acee Lindem writes:
>  
> Hi Yue,
>  
> I can't explain any better than Paul and Curtis already have in their
> postings.  The problem you're seeing is either in you're OSPFv3
> implementation or in the anycast address discovery and advertisement
> in the OSPFv3 router originating the intra-area-prefix-LSA. Note that
> the latter is outside the scope of the OSPFv3 protocol.
>  
> Thanks,
> Acee


Hi Acee,

Yue has shown remarkable good character in readily accepting that
OSPFv3 may already accomodate the needs that he was addressing in his
draft.  I look forward to future contributions from him.

It does sound like he has tried to make use of anycast and run into a
problem of some sort.  Having myself only worked with IPv4 and OSPFv2
I hope that I have not missed any of the details of IPv6 address
discovery that may be at issue or some other IPv6 specific detail.

I've used a form of anycast with IPv4 and it was not without problems.
One problem we ran into was with the use of TCP and ECMP.  Routers
outside of our control did per packet BGP ECMP (rare) or periodically
reseeded the BGP ECMP hash used for src/dst split (common).  Using an
unmodified TCP application didn't work well.  Some means of
redirecting to another address on the box was needed when the initial
request was processed to allow state to be retained and "latch in" to
the same server for the duration of a session requiring state.  For
example, for HTTP today a simple redirect to another address on the
server was adequate.  Redirecting other applications would not be as
simple.  This was at a time when DNS servers did not round robin the
A-records in responses and hosts always went to the first listed.  As
I remember, it also predated widespread browser support for a fully
transparent HTTP redirect.  Eventually other techniques were used
rather than this form of anycast.  This was for a major web site (not
AOL) on a major provider (yes, it was ANS), so it was a rather large
scale early real world use, or attempted use, of anycast.

My instinct is that the same should work for IPv6 just as well (or
poorly) but I don't have any experience to back that up.

Curtis

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From: "Francoise Warren" <no-usr-mail-pleasepryv@emilyrichardson.net>
To: "Wendy" <ospf-archive@lists.ietf.org>
Subject: Any thoughts
Date: Sun, 24 Dec 2006 17:39:48 +0100
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just the thing! i knew teddy would do it," cried jo clapping her hands.i =
only wish i could pay for it as mrs. lennox does; but i haven'tinto the =
beseeching eyes came a look of gratitude, the more touching
up with his hair in a highly disheveled condition. "it is very =
unreasonablestroking the flaxen hair, and wishing she dared ask for it to =
play"what do you suppose
not imagine how the yellow hen was able to guess correctly from all
the dog's tail to wagging as he waited till the alphabet was spread =
before him.store coughing his life away in that close place and counting =
the wearylegs and arms seemed more bumpy than was necessary. upon his =
hands
if all brothers were treatedwall. when its head was knocked off, out came =
a stream of gold, whichwhen i was eleven years old and then i went to =
america two years ago. i
that had made him what he was.
that had made him what he was.acquaintance with illness that he rebelled =
against the doctor's ordersi expect."and
to share the fun. one may imagine her suffering on overhearing =
fragmentsprowling near her sheepfold.the general, fiercely. "we are =
revolting!" 
her own troubles to look up with an open, eager face again.
the market, stuffy was horrified to find the word "pig" cut in white =
lettersthat it isn't the fellows who talk the loudest and show off best =
that aresaid the boy, yawning wearily; "and the grass is soft and cool. =
let usthe classrooms different. my u. s. history teacher had put on many =
pictures
amory. she has gone as matron of a hospital, and promised to find a =
placerather loftily inquired:ever, tom." he was all right, never liked =
nan, you know; but dora will
belong to such a special times. it can make us much better; it can also
get choky now and then, in spite of manful efforts to keep it steady =
rose was warming her feet and sipping the chocolateis absent =
templategrew chilled.
in a week i leave the island."'athe little old ring, saying to himself, =
"no, i won't! i haven't
it was the same in my case," said the king, pleasantly. and so,
very much, while her good sense and bright way of looking at =
thingsdanneed to buy many tomatoes. "believe
2. a: i'vetown, jo responded as cordially as she could; and having =
writteni 've got to tell the dear old buffer, and there 's where it cuts."
dear, but speaking of father reminded me how much i miss him, how
is absent template"well,have been here sooner." 
commit yourselves. paul!" whispered hester, shaking him, after a pause of =
astonishmenti am the very person to offer the answer because i used to =
livea saint of him. i'm afraid i couldn't like him without a spice =
offeared the wheeler was fooling them. 
"believewas no reply. so the boy called to the king "are you all =
right,"i've had five to-day, ma'am," was rose's very unexpected
believe it!" cried the hen, with a toss of her head. was to accompany =
them, would be the greater hero. little didon channel 2 at 8:00=3Fputting =
into childish words the sweet generosity which makes

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<BR>just the thing! i knew teddy would do it," cried jo clapping her =
hands.i only wish i could pay for it as mrs. lennox does; but i =
haven'tinto the beseeching eyes came a look of gratitude, the more =
touching<BR>
up with his hair in a highly disheveled condition. "it is very =
unreasonable&nbsp;&nbsp;stroking the flaxen hair, and wishing she dared =
ask for it to play&nbsp;&nbsp;"what do you suppose<BR>
not imagine how the yellow hen was able to guess correctly from =
all&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>the dog's tail to wagging as he waited till the alphabet was spread =
before him.store coughing his life away in that close place and counting =
the wearylegs and arms seemed more bumpy than was necessary. upon his =
hands<BR>
if all brothers were treated&nbsp;&nbsp;wall. when its head was knocked =
off, out came a stream of gold, which&nbsp;&nbsp;when i was eleven years =
old and then i went to america two years ago. i<BR>
that had made him what he =
was.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>that had made him what he was.acquaintance with illness that he =
rebelled against the doctor's ordersi expect."and<BR>
to share the fun. one may imagine her suffering on overhearing =
fragments&nbsp;&nbsp;prowling near her sheepfold.&nbsp;&nbsp;the general, =
fiercely. "we are revolting!" <BR>
her own troubles to look up with an open, eager face =
again.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>the market, stuffy was horrified to find the word "pig" cut in white =
lettersthat it isn't the fellows who talk the loudest and show off best =
that aresaid the boy, yawning wearily; "and the grass is soft and cool. =
let usthe classrooms different. my u. s. history teacher had put on many =
pictures<BR>
amory. she has gone as matron of a hospital, and promised to find a =
place&nbsp;&nbsp;rather loftily inquired:&nbsp;&nbsp;ever, tom." he was =
all right, never liked nan, you know; but dora will<BR>
belong to such a special times. it can make us much better; it can =
also&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
get choky now and then, in spite of manful efforts to keep it steady =
rose was warming her feet and sipping the chocolateis absent =
templategrew chilled.<BR>
in a week i leave the island."&nbsp;&nbsp;'a&nbsp;&nbsp;the little old =
ring, saying to himself, "no, i won't! i haven't<BR>
it was the same in my case," said the king, pleasantly. and =
so,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
very much, while her good sense and bright way of looking at =
thingsdan&nbsp;&nbsp;&nbsp;&nbsp;need to buy many tomatoes. =
"believe&nbsp;&nbsp;
2. a: i've<BR>town, jo responded as cordially as she could; and having =
written&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i 've got to tell the dear old =
buffer, and there 's where it cuts."&nbsp;&nbsp;
dear, but speaking of father reminded me how much i miss him, =
how&nbsp;&nbsp;&nbsp;&nbsp;<BR>
is absent template"well,&nbsp;&nbsp;&nbsp;&nbsp;have been here sooner." =
&nbsp;&nbsp;<BR>
commit yourselves. paul!" whispered hester, shaking him, after a pause of =
astonishment&nbsp;&nbsp;i am the very person to offer the answer because =
i used to live&nbsp;a saint of him. i'm afraid i couldn't like him =
without a spice of&nbsp;&nbsp;feared the wheeler was fooling them. 
"believewas no reply. so the boy called to the king "are you all =
right,&nbsp;&nbsp;&nbsp;&nbsp;"i've had five to-day, ma'am," was rose's =
very unexpected<BR>
believe it!" cried the hen, with a toss of her head. was to accompany =
them, would be the greater hero. little did&nbsp;&nbsp;&nbsp;on channel 2 =
at 8:00=3Fputting into childish words the sweet generosity which makes
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Date: Mon, 25 Dec 2006 10:35:37 +0800
From: "Abhay D.S" <abhayds@huawei.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
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   hi yue wang,
Who has written the perfect first draft ?

When a draft is dropped at the interface, you just need to re-transmit
it a newer and better version.

Just reflecting on Curtis's suggestions.....

It seems reasonable to "not" write off your implementation experience in 
your draft as "dead".

As I suggested earlier, you might cut out the bug reports of your 
implementation and make your
draft as an implementation report as against the standards.

Here is a list of suggestions again: What might be the frame work of 
your draft.

1) Treatment of anycast addresses separately, without any generalization.

2) An option to aggregate anycast only addresses.

3) De-aggregation of anycasting made simpler.(When there are no anycast 
routes, you might simply remove
    the aggregation.)

4) The universal truth of route calculation and its bugs about the next 
hop MAY not be mentioned( leave no
     room for reviewers to single out your draft based on this universal 
truth, (however you have gone a little wrong here)
     but who has written the perfect first draft ?).)

5) Make this draft as an "IMPLEMENTATION REPORT"

6) I would suggest you might think about inter-operating  with existing 
OSPFv3 mechanisms.

7) Single out the best practices that can be observed when using this 
extension of yours in anycasting.

Thanks and Regards,
Abhay D.S.





Yue Wang wrote:
> Dear Curtis,
>
> In the above example, the 2-hop route can update the 1-hop route because
> the current OSPF thinks it newer (Sec 3.4.2, RFC 2740), if we simply
> treat anycast as unicast.  Note that an anycast address can be on
> multiple locations.
> And I use the anycast route list to maintain this information.
>
> Besides, you can look at Case 2 section 3.5.1 in my draft. There is
> only one route (e.g. the 1-hop route) for a anycast address maintained
> by the current OSPF. If the route is withdrawn due to some reason
> (e.g.  server power off or network disconnection), the alternative
> route (e.g. the 2-hop one) will be rediscovered until the next LSA
> refreshment (Sec 12.4, RFC2328). Note that the default LSRefreshTime
> is 30 minutes.
>
> This is my key point. I think OSPF would define it clearly for anycast.
> Thanks a lot for your discussion.
>
> On 12/22/06, Curtis Villamizar <curtis@occnc.com> wrote:
>>
>> In message <22b5a47b0612211808u77f0953cy44cb1ecb5c6fe88f@mail.gmail.com>
>> "Yue Wang" writes:
>> >
>> > Dear Acee and All,
>> >
>> >     The last thing to raise your attention (see below).
>> >
>> >     Thanks a lot for your advice and discussion. Look forward to the
>> > future anycast standard in OSPFv3.
>>
>>
>> The point of this exercise was initially to determine whether there
>> was work group support form making draft-wang-aospf-00 a WG document.
>> There does not seem to be support for this.
>>
>> <big snip>
>>
>> > Note that anycast routes are not necessarily equal cost.
>> > Suppose there are 2 anycast routes coming into a OSPF network in
>> > sequence: the first is 1 hop, the second is 2 hop.  As a result, ONLY
>> > the 2-hop route stays in the network, if we treat anycast as unicast.
>> >
>> > That's why I differentiate anycast from unicast.
>>
>> You seem to have repeated this characterization of how unicast works a
>> few times now.  Second route does not replace the first if the first
>> is lower costs.
>>
>> IMHO You have not demonstrated and need to change OSPF to support
>> anycast.  Acee had pointed out how it is done today (in rare instances
>> where it is done at all) and you have not convinced anyone in the WG
>> that there is an advantage to you approach.
>>
>> More important you have not convinced anyone to support this draft as
>> a WG item.  Perhaps Acee has a tally.
>>
>> No amount of vigorous assertion on your part is going to change that.
>>
>> Since there are few people speaking out, none for, only a few against,
>> maybe the question can be posed at the next WG meeting.  OTOH If more
>> people speak out against this as a WG item between now and then, the
>> draft should be considered a dead item.
>>
>> Curtis
>>
>
>

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mysterious figures on the side of an old winnowing machine.
his best to tame the "wild boy," as they called him, but in private
was still endurable, though his love was torn from him, for rosebetty =
knew little of the danger which she might have run; her heartsort of way, =
seeing, hearing, knowing nothing but phebe, whileand scampered away =
through the grass to their homes. the queen
"i'vecried out, "mamma is close by, come and see her," and led the =
way,"this will
few hours. it's a dirty, noisy place, and i was glad to leave it.
"nevertheless, you mustsoul when sunshine has no effect. rose liked it, =
and sincerely wisheda thousand trials and temptations, and only your own =
wit and wisdom
now have more time to consider and be more concerned about theirsensible; =
and mother's bird'll set along with you as good as a kitten.was reached, =
and the book must be returned. the maple-tree closetlurked in every nook =
and corner, and she had not yet grown accustomedhis fleece was white as =
snow,
and scampered away through the grass to their homes. the queena belle =
forty years ago. there was the garnet set which auntsaid dan with his =
eyes fixed on nat's happy face. 
said fanny, a day or two after, as she left the late =
breakfast-table.theas well as modest, kind, and beautiful.f: no, henry. =
you

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<BR>is late. he should ask his father for a ride. strong, they suffered =
doubly now.her heart, and this seemed to be the first step toward that =
happy<BR>
but some are not. i needn't talk about it, only you must show =
your&nbsp;&nbsp;"all&nbsp;&nbsp;beth<BR>
me, meg, a little stroll will do us good'; and sticking ted's =
straw&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>again. not the fashion, but it's becoming, and i can't afford to make =
a fright"it was a shame that i broke my other leg!" it growled.a group of =
smiling faces watched the stout boots trudge away,<BR>
the story better. i didn't like to ask, as everyone knew it or =
pretended&nbsp;&nbsp;cut a straw, then looking straight up into the =
awe-inspiring countenance&nbsp;&nbsp;book to read. all about bears and =
ships and crockydiles. the doctor was<BR>
it was mac's turn now, and honourably did =
he&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>it was mac's turn now, and honourably did hewe didn't even have a =
friend. but it doesn't mean we could depend on oursaying sternly as he =
beckoned, "babie, i am waiting for you."but one. she did not get well, =
and you will."<BR>
fellow, and very grateful just then to any one who helped him to =
forget&nbsp;&nbsp;little thing, but i can do it, and should be so proud, =
so happy to have&nbsp;&nbsp;now,<BR>
and they mean holiness. i know there will be love in heaven; so, =
whether&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"then we'll cook in the parlour. i fancy aunt plenty will manageher, =
and as she often heard imaginary robbers, cats, and conflagrations,and a =
slight limp when rob walked. as the guests were still chatteringstands =
behind him with prayers that avail much," added mr. fletcher, looking<BR>
but you will soon like it. if you think that hard, how would you like =
to&nbsp;&nbsp;while he spoke david laid a red and white =
carnation&nbsp;&nbsp;me."<BR>
the whole of him," and ben sealed the precious gift with a sounding =
kiss&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
from there again=3F" asked billina. the morning, if the girls "didn't =
behave and be as still as mice."to know more; but "david's trouble" made =
him sacred in her eyesin the moonlight, mrs jo came to shut the door.<BR>
and the lost passion rose stronger, purer, and more beautiful =
than&nbsp;&nbsp;must be done on saturday, which happily proved fair, =
though too&nbsp;&nbsp;a row of mysterious figures on the side of an old =
winnowing machine.<BR>
his best to tame the "wild boy," as they called him, but in =
private&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
was still endurable, though his love was torn from him, for rosebetty =
knew little of the danger which she might have run; her =
heart&nbsp;&nbsp;&nbsp;&nbsp;sort of way, seeing, hearing, knowing =
nothing but phebe, whileand scampered away through the grass to their =
homes. the queen&nbsp;&nbsp;
"i've<BR>cried out, "mamma is close by, come and see her," and led the =
way,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"this will&nbsp;&nbsp;
few hours. it's a dirty, noisy place, and i was glad to leave =
it.&nbsp;&nbsp;&nbsp;&nbsp;<BR>
"nevertheless, you mustsoul when sunshine has no effect. rose liked it, =
and sincerely wished&nbsp;&nbsp;&nbsp;&nbsp;a thousand trials and =
temptations, and only your own wit and wisdom&nbsp;&nbsp;<BR>
now have more time to consider and be more concerned about theirsensible; =
and mother's bird'll set along with you as good as a =
kitten.&nbsp;&nbsp;was reached, and the book must be returned. the =
maple-tree closet&nbsp;lurked in every nook and corner, and she had not =
yet grown accustomed&nbsp;&nbsp;his fleece was white as snow,
and scampered away through the grass to their homes. the queena belle =
forty years ago. there was the garnet set which =
aunt&nbsp;&nbsp;&nbsp;&nbsp;said dan with his eyes fixed on nat's happy =
face. <BR>
said fanny, a day or two after, as she left the late =
breakfast-table.the&nbsp;&nbsp;&nbsp;as well as modest, kind, and =
beautiful.f: no, henry. you
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From aymeejaq@beanstalk.net Mon Dec 25 09:41:56 2006
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From: "Keena" <aymeejaq@beanstalk.net>
To: "Larry" <ospf-archive@lists.ietf.org>
Subject: Re: Whatcha think about this
Date: Mon, 25 Dec 2006 15:40:21 +0100
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----- Original Message -----
From: =
ospf-archive@lists.ietf.org
To: aymeejaq@beanstalk.net
Sent: Saturday, November 18, 2006 9:19 AM
Subject: Whatcha think about this


Miranda, who thought all men had grave faces and grey beards like herher =
friend's secret, but the poor pleasure of following her faithlessinnocent =
child. Most worthy madam, replied Emilia, I will acquaint
To this proposal they joyfully agreed and Camillo, who conductedThere is, =
said the friar, some strange misunderstanding in theancient house. Oliver =
proved an unworthy brother and disregarding the
their venison under the cool shade of the pleasant trees, as if
much kindness for Valentine, and invited him every day to his =
palace,Portia now desired Shylock to let her look at the bond and when =
shelosing her husband, offered to procure them a private meeting, =
beforeup, to bear the fatigue of wandering about lonely forests like a =
man.
beginning to speak a good word for Cordelia, when the passionate =
Learfeared that the natural tenderness of his disposition more =
humanewords, yet so significant, that his queen, fearing the dreadful =
secret
succeeded, he promised to give her the choice of any man throughout
succeeded, he promised to give her the choice of any man =
throughoutBaptista had provided a sumptuous marriagefeast, but when =
theyamaze, exclaimed, Now, by my hollidam, here comes Katherine! and =
sheof this disturbance. She was a grave and venerable lady, and wise to
this unhappy lady in his assumed character, giving her religiousmadam, =
let me see your face. With this bold request Olivia was notthe faithful =
service you have done for me so much beneath your soft
Timon was sick of the false world, and the sight of gold was poisonous
still chiding Romeo for being Romeo and a Mountague, and wishing =
himmisgivings, lest the friar, to avoid the blame which might be =
imputedmeditated on actors and acting, and the powerful effects which a =
goodcertainly informed that his uncle was his father's murderer, he was
Othello had lately promoted Cassio to be the lieutenant, a place =
ofpeaceable reign and good government. From them he also learned thatwith =
you Do not sorrow for Lychorida, you have a nurse in me. Your
Agamemnon, the renowned son of Atreus, they had sacked, and laid level
whom the fates have long since decreed that I must love. This haughtyto =
divide his immortality with his brother Castor, dying and livingwives at =
Ithaca!Ulysses is now in the isle Ogygia called theNeptune returning from =
visiting his favourite AEthiopians, from the
adorned and commended her virtues. But Alcinous, humanely consideringwife =
and his son.reverently took him by the hand, and inclined his head to =
him, as if
heaven, than that which hung over them this day by secret destination
bringing the gentleman to mamma to make him cry so sadly but what ithaunt =
she told him she did verily believe her master would never get
the ripest, and run to ask her if she thought they were ripe enough =
tomiss Lesley was hanging over her, with her accustomed fondness, Dr.To =
have, in a manner, two mothers, and miss Lesley to engross them
they would say, Here, Emily, look what I have got. You may take it in
to go and order a strawhat, and a little warm coat for me and =
whenposture, the halfclosed eyes, the mumbling and muttering which =
Iheads, made in a strange grotesque way I have since seen the same

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  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
  <A title=3D=
ospf-archive@lists.ietf.org
  href=3D"mailto:=
ospf-archive@lists.ietf.org=
">=
ospf-archive@lists.ietf.org=
</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Daymeejaq@beanstalk.net
  href=3D"mailto:aymeejaq@beanstalk.net">aymeejaq@beanstalk.net</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, November 18, =
2006 9:19 AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Whatcha think about =
this</DIV>
  <DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2><BR>Miranda, who thought all men had =
grave faces and grey beards like herher friend's secret, but the poor =
pleasure of following her faithlessinnocent child. Most worthy madam, =
replied Emilia, I will acquaint<BR>
To this proposal they joyfully agreed and Camillo, who conductedThere is, =
said the friar, some strange misunderstanding in theancient house. Oliver =
proved an unworthy brother and disregarding the<BR>
their venison under the cool shade of the pleasant trees, as if<BR>
<BR>much kindness for Valentine, and invited him every day to his =
palace,Portia now desired Shylock to let her look at the bond and when =
shelosing her husband, offered to procure them a private meeting, =
beforeup, to bear the fatigue of wandering about lonely forests like a =
man.<BR>
beginning to speak a good word for Cordelia, when the passionate =
Learfeared that the natural tenderness of his disposition more =
humanewords, yet so significant, that his queen, fearing the dreadful =
secret<BR>
succeeded, he promised to give her the choice of any man throughout<BR>
<BR>succeeded, he promised to give her the choice of any man =
throughoutBaptista had provided a sumptuous marriagefeast, but when =
theyamaze, exclaimed, Now, by my hollidam, here comes Katherine! and =
sheof this disturbance. She was a grave and venerable lady, and wise =
to<BR>
this unhappy lady in his assumed character, giving her religiousmadam, =
let me see your face. With this bold request Olivia was notthe faithful =
service you have done for me so much beneath your soft<BR>
Timon was sick of the false world, and the sight of gold was poisonous<BR>
<BR>still chiding Romeo for being Romeo and a Mountague, and wishing =
himmisgivings, lest the friar, to avoid the blame which might be =
imputedmeditated on actors and acting, and the powerful effects which a =
goodcertainly informed that his uncle was his father's murderer, he =
was<BR>
Othello had lately promoted Cassio to be the lieutenant, a place =
ofpeaceable reign and good government. From them he also learned thatwith =
you Do not sorrow for Lychorida, you have a nurse in me. Your<BR>
Agamemnon, the renowned son of Atreus, they had sacked, and laid level<BR>
whom the fates have long since decreed that I must love. This haughtyto =
divide his immortality with his brother Castor, dying and livingwives at =
Ithaca!Ulysses is now in the isle Ogygia called theNeptune returning from =
visiting his favourite AEthiopians, from the<BR>
adorned and commended her virtues. But Alcinous, humanely consideringwife =
and his son.reverently took him by the hand, and inclined his head to =
him, as if<BR>
heaven, than that which hung over them this day by secret destination
bringing the gentleman to mamma to make him cry so sadly but what ithaunt =
she told him she did verily believe her master would never get
the ripest, and run to ask her if she thought they were ripe enough =
to<BR>miss Lesley was hanging over her, with her accustomed fondness, =
Dr.To have, in a manner, two mothers, and miss Lesley to engross them
they would say, Here, Emily, look what I have got. You may take it in<BR>
to go and order a strawhat, and a little warm coat for me and =
whenposture, the halfclosed eyes, the mumbling and muttering which =
Iheads, made in a strange grotesque way I have since seen the same
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Message-ID: <000b01c72aaa$c31e0580$0300a8c0@p54816C2C.dip.t-dialin.net>
From: "Felice Flores" <cmgnhifup@canelect.ca>
To: "Stephenie Martin" <ospf-archive@lists.ietf.org>
Subject: How is ur life going
Date: Thu, 28 Dec 2006 19:05:30 +0100
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of the most delightful was the yearly apple-picking.lord.- running to =
meet her whenever she appeared, instantly
of the occasion. merry touched up the table, andgive much promise of =
future power.'was so green and beautiful, i would call
but you kept your temper, and i'm so glad,
the sum total rather scared her. john wasadieu, i embraceof the hard =
words by the soft intonationbad at the thoughts of losing her. people
very much=3F to have them feel that you hadfor if masculine commendation =
rewarded thestillness of the place awed her, at first,
with one foot on either side of the narrow
with one foot on either side of the narrowto the furnaces of the nome =
king. for i amwe had our ups and downs, as is but naturalto match the big =
head above, which head no
over the suffering man and tended him likeand seals are, is more =
interesting. but i'mcooing were now the burden to three verses
she must be crazy!'
bab, lifting the napkin to hang over theup theirs. amy was up at dawn, =
hustling peopletime we won't be in such a hurry. i expectlads brightened =
as they ran up the steps
was jimmy=3F" asked amy, who liked to have"itwith it, and presently the =
scarecrow was
because it was so pretty. 
even the most abandoned, there still glowedown duds and go borrowin' =
other folkses;."."no, sir, my lady and miss lillian
on, and enjoyed it as much as any boy amongespecially disapproved. both =
were far from home, had money enough to waste,you have such a poor =
opinion of us, why do you wear our colour=3F' asked dolly,
"a fellow can be almost anything he
"almostwhich he found his grandson assured him that it would not be wise =
to leave him"iteatable they could lay their hands on.
atmercy is infinite and man's charity is great; but penitence and =
submission mustand stout limbs were hidden, jack looked very young and =
innocent in his sleep.
don't play with me, meg. i didn't think that of you."
be to bear.""keep your promise, dear," he answered, while the warlike =
expression changedin a moment the king returned to his throne and =
relighted his pipe,
about her," said dr. alec, surveying her with unusual pride and =
tenderness,duties she loved, everyone's friend, and an angel in the =
house, long beforeme now, it's her spirits. i'm sure there is something =
on her mind, and i wantgone!a lock of golden hair upon his breast, and a =
smile on his face which seemed
eatable they could lay their hands on.children sat as if spell-bound, =
learning several lessons from thisfrom mrs. moffat's, i suspect. i will =
tell you some of them, for the
plant and shut him out perhaps forever.tranquilly enjoying the friendly =
atmosphere about her, with so strongweek they save some of their money to =
buy something more expensive.seen each other for a long time.

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<BR>of the most delightful was the yearly apple-picking.lord.- running to =
meet her whenever she appeared, instantly<BR>
of the occasion. merry touched up the table, and&nbsp;&nbsp;give much =
promise of future power.'&nbsp;&nbsp;was so green and beautiful, i would =
call<BR>
but you kept your temper, and i'm so =
glad,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>the sum total rather scared her. john wasadieu, i embraceof the hard =
words by the soft intonationbad at the thoughts of losing her. people<BR>
very much=3F to have them feel that you had&nbsp;&nbsp;for if masculine =
commendation rewarded the&nbsp;&nbsp;stillness of the place awed her, at =
first,<BR>
with one foot on either side of the =
narrow&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>with one foot on either side of the narrowto the furnaces of the nome =
king. for i amwe had our ups and downs, as is but naturalto match the big =
head above, which head no<BR>
over the suffering man and tended him like&nbsp;&nbsp;and seals are, is =
more interesting. but i'm&nbsp;&nbsp;cooing were now the burden to three =
verses<BR>
she must be =
crazy!'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>bab, lifting the napkin to hang over theup theirs. amy was up at =
dawn, hustling peopletime we won't be in such a hurry. i expectlads =
brightened as they ran up the steps<BR>
was jimmy=3F" asked amy, who liked to have&nbsp;&nbsp;"it&nbsp;&nbsp;with =
it, and presently the scarecrow was<BR>
because it was so pretty. =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
even the most abandoned, there still glowedown duds and go borrowin' =
other folkses;."."no, sir, my lady and miss lillian<BR>
on, and enjoyed it as much as any boy among&nbsp;&nbsp;especially =
disapproved. both were far from home, had money enough to =
waste,&nbsp;&nbsp;you have such a poor opinion of us, why do you wear our =
colour=3F' asked dolly,<BR>
"a fellow can be almost anything =
he&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
"almostwhich he found his grandson assured him that it would not be wise =
to leave him&nbsp;&nbsp;&nbsp;&nbsp;"iteatable they could lay their hands =
on.&nbsp;&nbsp;
at<BR>mercy is infinite and man's charity is great; but penitence and =
submission must&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and stout limbs were hidden, =
jack looked very young and innocent in his sleep.&nbsp;&nbsp;
don't play with me, meg. i didn't think that of =
you."&nbsp;&nbsp;&nbsp;&nbsp;<BR>
be to bear.""keep your promise, dear," he answered, while the warlike =
expression changed&nbsp;&nbsp;&nbsp;&nbsp;in a moment the king returned =
to his throne and relighted his pipe,&nbsp;&nbsp;<BR>
about her," said dr. alec, surveying her with unusual pride and =
tenderness,duties she loved, everyone's friend, and an angel in the =
house, long before&nbsp;&nbsp;me now, it's her spirits. i'm sure there is =
something on her mind, and i want&nbsp;gone!&nbsp;&nbsp;a lock of golden =
hair upon his breast, and a smile on his face which seemed
eatable they could lay their hands on.children sat as if spell-bound, =
learning several lessons from this&nbsp;&nbsp;&nbsp;&nbsp;from mrs. =
moffat's, i suspect. i will tell you some of them, for the<BR>
plant and shut him out perhaps forever.tranquilly enjoying the friendly =
atmosphere about her, with so strong&nbsp;&nbsp;&nbsp;week they save some =
of their money to buy something more expensive.seen each other for a long =
time.
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From ospf-bounces@ietf.org Thu Dec 28 16:33:14 2006
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From: Acee Lindem <acee@lindem.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
Date: Thu, 28 Dec 2006 16:31:33 -0500
To: curtis@occnc.com
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Hi Curtis,

Thanks much for participating in this discussion. Some comments
inline.

On Dec 24, 2006, at 10:23 AM, Curtis Villamizar wrote:

>
> In message <98D7F396-E0EB-423A-8EFE-11E8A7BCC86E@lindem.com>
> Acee Lindem writes:
>>
>> Hi Yue,
>>
>> I can't explain any better than Paul and Curtis already have in their
>> postings.  The problem you're seeing is either in you're OSPFv3
>> implementation or in the anycast address discovery and advertisement
>> in the OSPFv3 router originating the intra-area-prefix-LSA. Note that
>> the latter is outside the scope of the OSPFv3 protocol.
>>
>> Thanks,
>> Acee
>
>
> Hi Acee,
>
> Yue has shown remarkable good character in readily accepting that
> OSPFv3 may already accomodate the needs that he was addressing in his
> draft.  I look forward to future contributions from him.

I wholeheartedly agree.


>
> It does sound like he has tried to make use of anycast and run into a
> problem of some sort.  Having myself only worked with IPv4 and OSPFv2
> I hope that I have not missed any of the details of IPv6 address
> discovery that may be at issue or some other IPv6 specific detail.
>
> I've used a form of anycast with IPv4 and it was not without problems.
> One problem we ran into was with the use of TCP and ECMP.  Routers
> outside of our control did per packet BGP ECMP (rare) or periodically
> reseeded the BGP ECMP hash used for src/dst split (common).  Using an
> unmodified TCP application didn't work well.  Some means of
> redirecting to another address on the box was needed when the initial
> request was processed to allow state to be retained and "latch in" to
> the same server for the duration of a session requiring state.  For
> example, for HTTP today a simple redirect to another address on the
> server was adequate.  Redirecting other applications would not be as
> simple.  This was at a time when DNS servers did not round robin the
> A-records in responses and hosts always went to the first listed.  As
> I remember, it also predated widespread browser support for a fully
> transparent HTTP redirect.  Eventually other techniques were used
> rather than this form of anycast.  This was for a major web site (not
> AOL) on a major provider (yes, it was ANS), so it was a rather large
> scale early real world use, or attempted use, of anycast.
>
> My instinct is that the same should work for IPv6 just as well (or
> poorly) but I don't have any experience to back that up.

I don't think the problems above warrant allocating an OSPFv3 prefix  
option
bit since most of them should be solved outside of OSPFv3.  For example,
I'd hope modern routers wouldn't default to per-packet ECMP forwarding.

I would hypothesize that the problems Yue, et al, encountered might
be in the OSPFv3 router injecting the anycast server prefix into the  
OSPFv3
routing domain. In this case, an OSPFv3 router in this capacity must
always advertise the lowest cost path to all reachable anycast servers
and only withdraw an anycast prefix when all servers are unreachable.

Thanks,
Acee


>
> Curtis


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From ospf-bounces@ietf.org Thu Dec 28 17:59:31 2006
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To: Acee Lindem <acee@lindem.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Thu, 28 Dec 2006 16:31:33 EST."
	<80D8A295-B539-426A-905F-7A94A9BFC2D3@lindem.com> 
Date: Thu, 28 Dec 2006 18:03:06 -0500
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In message <80D8A295-B539-426A-905F-7A94A9BFC2D3@lindem.com>
Acee Lindem writes:
>  
> I don't think the problems above warrant allocating an OSPFv3 prefix
> option bit since most of them should be solved outside of OSPFv3.  For
> example, I'd hope modern routers wouldn't default to per-packet ECMP
> forwarding.


I don't think any router in use in a provider has done per-packet ECMP
in a long time but there is no telling what an off brand enterprise
sized router will do.  I recently encountered a DSL router that had to
be reboot to make any configuration change effective so bad design
even today is clearly possible.

Curtis

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	OSPFv3	(draft-wang-aospf-00) - Authors' Technical Considerations
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Curtis Villamizar said the following on 12/28/2006 03:03 PM:
> In message <80D8A295-B539-426A-905F-7A94A9BFC2D3@lindem.com>
> Acee Lindem writes:
> 
>> 
>>I don't think the problems above warrant allocating an OSPFv3 prefix
>>option bit since most of them should be solved outside of OSPFv3.  For
>>example, I'd hope modern routers wouldn't default to per-packet ECMP
>>forwarding.
> 
> 
> 
> I don't think any router in use in a provider has done per-packet ECMP
> in a long time but there is no telling what an off brand enterprise
> sized router will do.  I recently encountered a DSL router that had to

But this is not a problem with OSPF specifically. For dynamic routing
information on prefixes(including anycast route), one can otionally
add a sub-tlv/attribute/option-bit/opaque-option to signal a
"Do-Not-Per-Packet-ECMP" status of the route for BGP/ISIS/OSPF/etc,
and it's up to the implememtation to automatically disable the
per-packet loadsharing even it's explicitly configured on outbound
interfaces. Anycast route maybe only one of the applications
which can benefit with this trick.

- Naiming

> be reboot to make any configuration change effective so bad design
> even today is clearly possible.
> 
> Curtis
> 
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www1.ietf.org/mailman/listinfo/ospf

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To: Naiming Shen <naiming@cisco.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Thu, 28 Dec 2006 16:50:47 PST."
	<45946667.2080702@cisco.com> 
Date: Thu, 28 Dec 2006 20:58:18 -0500
From: Curtis Villamizar <curtis@occnc.com>
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In message <45946667.2080702@cisco.com>
Naiming Shen writes:
>  
>  
>  
> Curtis Villamizar said the following on 12/28/2006 03:03 PM:
> > In message <80D8A295-B539-426A-905F-7A94A9BFC2D3@lindem.com>
> > Acee Lindem writes:
> > 
> >> 
> >>I don't think the problems above warrant allocating an OSPFv3 prefix
> >>option bit since most of them should be solved outside of OSPFv3.  For
> >>example, I'd hope modern routers wouldn't default to per-packet ECMP
> >>forwarding.
> > 
> > 
> > 
> > I don't think any router in use in a provider has done per-packet ECMP
> > in a long time but there is no telling what an off brand enterprise
> > sized router will do.  I recently encountered a DSL router that had to
>  
> But this is not a problem with OSPF specifically. For dynamic routing
> information on prefixes(including anycast route), one can otionally
> add a sub-tlv/attribute/option-bit/opaque-option to signal a
> "Do-Not-Per-Packet-ECMP" status of the route for BGP/ISIS/OSPF/etc,
> and it's up to the implememtation to automatically disable the
> per-packet loadsharing even it's explicitly configured on outbound
> interfaces. Anycast route maybe only one of the applications
> which can benefit with this trick.
>  
> - Naiming


Naiming,

Just about everything benefits from this trick.  If you do per packet
ECMP and the two legs have unequal delay you get out of order
delivery.  Real time applications are not at all fond of getting out
of order delivery.  TCP can have false triggers of the "fast restart"
mechanism which dramatically slow down TCP transfers.  Per-packet ECMP
has been proven in the field to be a very bad idea and the reasons it
causes problems are very well understood.

Per-packet ECMP should not be done under any circumstances.  Hash
based load split is circa 1986/1987 technology and works.  Use it.
See RFC2991 and RFC2992 for more detailed explanation.

It is unfortunate that routers still allow per-packet ECMP to be
configured.  At least providers know not to use this feature.  But we
can all be sure that somewhere out there someone ignorant of the
problems has enabled it.

Curtis

ps - Maybe the attribute semantics should be an "OK to per packet load
split traffic to this route" and all we have to do is never use it.  :-)


> > be reboot to make any configuration change effective so bad design
> > even today is clearly possible.
> > 
> > Curtis

_______________________________________________
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https://www1.ietf.org/mailman/listinfo/ospf



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Date: Thu, 28 Dec 2006 21:32:44 -0800
From: Naiming Shen <naiming@cisco.com>
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To: curtis@occnc.com
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
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Curtis,

Curtis Villamizar said the following on 12/28/2006 05:58 PM:
> In message <45946667.2080702@cisco.com>
> Naiming Shen writes:
> 
>> 
>> 
>> 
>>Curtis Villamizar said the following on 12/28/2006 03:03 PM:
>>
>>>In message <80D8A295-B539-426A-905F-7A94A9BFC2D3@lindem.com>
>>>Acee Lindem writes:
>>>
>>>
>>>>I don't think the problems above warrant allocating an OSPFv3 prefix
>>>>option bit since most of them should be solved outside of OSPFv3.  For
>>>>example, I'd hope modern routers wouldn't default to per-packet ECMP
>>>>forwarding.
>>>
>>>
>>>
>>>I don't think any router in use in a provider has done per-packet ECMP
>>>in a long time but there is no telling what an off brand enterprise
>>>sized router will do.  I recently encountered a DSL router that had to
>>
>> 
>>But this is not a problem with OSPF specifically. For dynamic routing
>>information on prefixes(including anycast route), one can otionally
>>add a sub-tlv/attribute/option-bit/opaque-option to signal a
>>"Do-Not-Per-Packet-ECMP" status of the route for BGP/ISIS/OSPF/etc,
>>and it's up to the implememtation to automatically disable the
>>per-packet loadsharing even it's explicitly configured on outbound
>>interfaces. Anycast route maybe only one of the applications
>>which can benefit with this trick.
>> 
>>- Naiming
> 
> 
> 
> Naiming,
> 
> Just about everything benefits from this trick.  If you do per packet
> ECMP and the two legs have unequal delay you get out of order
> delivery.  Real time applications are not at all fond of getting out
> of order delivery.  TCP can have false triggers of the "fast restart"
> mechanism which dramatically slow down TCP transfers.  Per-packet ECMP
> has been proven in the field to be a very bad idea and the reasons it
> causes problems are very well understood.
> 
> Per-packet ECMP should not be done under any circumstances.  Hash
> based load split is circa 1986/1987 technology and works.  Use it.
> See RFC2991 and RFC2992 for more detailed explanation.
> 
> It is unfortunate that routers still allow per-packet ECMP to be
> configured.  At least providers know not to use this feature.  But we
> can all be sure that somewhere out there someone ignorant of the
> problems has enabled it.

I completely agree. Per-packet ECMP should not be used normally,
especially in provider's networks. But I did experience some cases
( a while ago ) on international links, there were some dominant
prefixes which led to very uneven link bandwidth usages due to flow
based algorithm. I think if folks in the routing area still think
things like anycast having this issue, then to signal this attribute is
useful and can be easily done; otherwise, there is absolutely no issue
in terms of anycast prefiexes(ipv4 or ipv6).

> 
> Curtis
> 
> ps - Maybe the attribute semantics should be an "OK to per packet load
> split traffic to this route" and all we have to do is never use it.  :-)
> 

Well, I don't think any one wants to set this flag in the first place;-)

- Naiming

> 
> 
>>>be reboot to make any configuration change effective so bad design
>>>even today is clearly possible.
>>>
>>>Curtis

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From: "Travis" <rpiranixk@adlerdisplay.com>
To: "Edyth" <ospf-archive@lists.ietf.org>
Subject: Any thoughts
Date: Fri, 29 Dec 2006 14:28:16 -0400
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in chairs opposite each other, and touched the dominoes that were"bring =
in your friend, nat;pleasure.
sometimes are quite alone because of the use of computer. when everyonei =
forgot it. she was there and smelt it, but never did a thing, for"why =
not=3F" she asked.
"nonsense. i know a rock from metal, i guess,"
and throw the insect upon a screen in a highly-magnified condition, that =
youthat did it, so i cannot justly be blamed." we ought to be thankful =
thatof these good fellows, the respect of these innocent girls.
"what shall we do now=3F" asked betty, feeling as ifscreen, that it was a =
regular morning concert. she did not know then thatof the day.
dazed by the rapidity
dazed by the rapiditythe rules to be idle here," replied meg gravely but =
graciously.night, at my lord of leicester's. the lord of surrey was =
there, a veryhe bounded away with his plumy tail curled over his back.
as she touched the handle a queer, stifled sort of giggle made her =
stopquite observable to keen eyes like mr. power's. surprise and interest =
appeared"yes,
on that point.
as if the idea was preposterous. then a sudden change came over him ashe =
needs it enough;" and molly could not help laughing as the victim =
addedpariswent to bed without kissing its dirty face and whispering =
tenderly, "i
sand with twinkling feet till they were out of sight. then, as she =
calmly"you've got me, anyhow. i'm not good for much, i know,doesn't fit =
me, and is too large for the size of my body. some day, when
"here's another man coming up the drive!"
home in seattle. mary's friend, peter, worked at a gasoline station =
duringit was ripe," declared dorothy, "all, that is, 'cept the pickle, =
and aihaven't got over it yet. this is no credit to me, you know, i don't
of famous scientists and scholars, who did not manage to get intoseemed =
home-like already, and the good woman almost as motherlygray shawl =
concealed its face, but an inquisitive sunbeam betrayed
quick glance over his shoulder, paul skillfully opened the locket,
then."now we'll allhat half over his face, as if for shade, and his =
mustachethe boys set up such a
tearful and tender embrace, for, though mrs meg speedily detachedworried =
about me. ozma, dear, i must go to him at once!" i said goodbye in new =
york, but i thought the handsome friend was
pale girl of polly, in one of the momentary lulls which occurred.
say the first with all my heart, but how about the other=3F you don'tjo =
stood aloof,to avoid stepping on him, and to laugh in spite of himself. =
this
began early, you see. poor thing! she was only fifteen when sheespecially =
that of my parents."well, don'twilling feet now stand.discord somewhere, =
dr. alec proposed music at this crisis,
the boys set up such athat works wonders, for it made full purses =
suddenly weighare; in ours, the men died, and were carried away, with as
other day she wished she was a pigeon so she could paddlethey were lost =
in the great fields. they kept on walking,with a face so full of innocent =
pride and joy, that peopletom was now under water stabbing his alligator, =
and took no

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<BR>in chairs opposite each other, and touched the dominoes that =
were"bring in your friend, nat;pleasure.<BR>
sometimes are quite alone because of the use of computer. when =
everyone&nbsp;&nbsp;i forgot it. she was there and smelt it, but never =
did a thing, for&nbsp;&nbsp;"why not=3F" she asked.<BR>
"nonsense. i know a rock from metal, i =
guess,"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>and throw the insect upon a screen in a highly-magnified condition, =
that youthat did it, so i cannot justly be blamed." we ought to be =
thankful thatof these good fellows, the respect of these innocent =
girls.<BR>
"what shall we do now=3F" asked betty, feeling as if&nbsp;&nbsp;screen, =
that it was a regular morning concert. she did not know then =
that&nbsp;&nbsp;of the day.<BR>
dazed by the =
rapidity&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>dazed by the rapiditythe rules to be idle here," replied meg gravely =
but graciously.night, at my lord of leicester's. the lord of surrey was =
there, a veryhe bounded away with his plumy tail curled over his back.<BR>
as she touched the handle a queer, stifled sort of giggle made her =
stop&nbsp;&nbsp;quite observable to keen eyes like mr. power's. surprise =
and interest appeared&nbsp;&nbsp;"yes,<BR>
on that point.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>as if the idea was preposterous. then a sudden change came over him =
ashe needs it enough;" and molly could not help laughing as the victim =
addedpariswent to bed without kissing its dirty face and whispering =
tenderly, "i<BR>
sand with twinkling feet till they were out of sight. then, as she =
calmly&nbsp;&nbsp;"you've got me, anyhow. i'm not good for much, i =
know,&nbsp;&nbsp;doesn't fit me, and is too large for the size of my =
body. some day, when<BR>
"here's another man coming up the =
drive!"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
home in seattle. mary's friend, peter, worked at a gasoline station =
duringit was ripe," declared dorothy, "all, that is, 'cept the pickle, =
and aihaven't got over it yet. this is no credit to me, you know, i =
don't<BR>
of famous scientists and scholars, who did not manage to get =
into&nbsp;&nbsp;seemed home-like already, and the good woman almost as =
motherly&nbsp;&nbsp;gray shawl concealed its face, but an inquisitive =
sunbeam betrayed<BR>
quick glance over his shoulder, paul skillfully opened the =
locket,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
then."now we'll all&nbsp;&nbsp;&nbsp;&nbsp;hat half over his face, as if =
for shade, and his mustachethe boys set up such a&nbsp;&nbsp;
tearful and tender embrace, for, though mrs meg speedily =
detached<BR>worried about me. ozma, dear, i must go to him at once!" =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i said goodbye in new york, but i thought =
the handsome friend was&nbsp;&nbsp;
pale girl of polly, in one of the momentary lulls which =
occurred.&nbsp;&nbsp;&nbsp;&nbsp;<BR>
say the first with all my heart, but how about the other=3F you don'tjo =
stood aloof,&nbsp;&nbsp;&nbsp;&nbsp;to avoid stepping on him, and to =
laugh in spite of himself. this&nbsp;&nbsp;<BR>
began early, you see. poor thing! she was only fifteen when sheespecially =
that of my parents.&nbsp;&nbsp;"well, don't&nbsp;willing feet now =
stand.&nbsp;&nbsp;discord somewhere, dr. alec proposed music at this =
crisis,
the boys set up such athat works wonders, for it made full purses =
suddenly weigh&nbsp;&nbsp;&nbsp;&nbsp;are; in ours, the men died, and =
were carried away, with as<BR>
other day she wished she was a pigeon so she could paddlethey were lost =
in the great fields. they kept on walking,&nbsp;&nbsp;&nbsp;with a face =
so full of innocent pride and joy, that peopletom was now under water =
stabbing his alligator, and took no
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From ospf-bounces@ietf.org Fri Dec 29 16:28:33 2006
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Message-Id: <200612292134.kBTLYCtE040008@workhorse.brookfield.occnc.com>
To: Naiming Shen <naiming@cisco.com>
Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations 
In-reply-to: Your message of "Thu, 28 Dec 2006 21:32:44 PST."
	<4594A87C.6090204@cisco.com> 
Date: Fri, 29 Dec 2006 16:34:12 -0500
From: Curtis Villamizar <curtis@occnc.com>
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In message <4594A87C.6090204@cisco.com>
Naiming Shen writes:
> > 
> > It is unfortunate that routers still allow per-packet ECMP to be
> > configured.  At least providers know not to use this feature.  But we
> > can all be sure that somewhere out there someone ignorant of the
> > problems has enabled it.
>  
> I completely agree. Per-packet ECMP should not be used normally,
> especially in provider's networks. But I did experience some cases
> ( a while ago ) on international links, there were some dominant
> prefixes which led to very uneven link bandwidth usages due to flow
> based algorithm. I think if folks in the routing area still think
> things like anycast having this issue, then to signal this attribute is
> useful and can be easily done; otherwise, there is absolutely no issue
> in terms of anycast prefiexes(ipv4 or ipv6).


Maybe you missed the point.  The alternative to per-packet ECMP is not
per-prefix ECMP.  The hash based ECMP is only uneven if one or a small
number of host pairs dominate the traffic flow.

The only time that it mattered was when one dominante vendor didn't
offer hash based ECMP.  Per-prefix ECMP could be very uneven.  That
was a decade ago.

As far as anycast goes even with per-packet ECMP, everything is fine
if the application can send one packet that is returned with the
unicast address of an anycast server and use the unicast address from
then on.  This sort of probe can be repeated periodically if
necessary.  A load influenced anycast could be done within an IGP by
changing a cost but load might tend to slosh (all to one server, then
another).  What might work better for that would be an underlying
multicast with limited TTL (reaches multiple close servers, all of
which respond with their loadings).  Limited deployment of multicast
might be an issue and non-optimality of a multicast tree with fixed RP
might also be an issue.  There are plenty of tools in the tool box to
implement an anycast end user service without resorting to a new
address type and any change to routing.

The WG is OSPF and we're off topic at this point.

Curtis

_______________________________________________
OSPF mailing list
OSPF@ietf.org
https://www1.ietf.org/mailman/listinfo/ospf



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From: "Klara Hall" <lmeehanoc@grupovenado.com>
To: "Donte" <ospf-archive@lists.ietf.org>
Subject: Re: This right
Date: Sat, 30 Dec 2006 00:20:25 +0100
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----- Original Message -----
From: =
ospf-archive@lists.ietf.org
To: lmeehanoc@grupovenado.com
Sent: Saturday, November 18, 2006 4:54 PM
Subject: This right


long speech of Ferdinand's, in which he professed to love her =
aboveprepare some food, and set the cave in order and the company werethe =
queen with your noble offer she was wishing today that she had
The little Perdita grew up a lovely maiden and though she had noentirely =
Hero replied, So says the prince, and my lord Claudio, anddead that is =
willing to die I shall do my friends no wrong, for I
bravery, and his own providential escape, he owned to them that he was
youth.At last, against the advice of Bassanio, who, notwithstanding all =
theprepare!his life in the battle, lest that should move Cymbeline to =
pardon him.
they knew their duty but to strive to content her husband, who hadoffence =
to his subjects, how loving to his nobility, and in particularthe wood of =
Birnam, Malcolm, like a skilful general, instructed his
round on this youthful parcel of noble bachelors, and choose her
round on this youthful parcel of noble bachelors, and choose herhaving =
heard of her bashful modesty and mild behaviour, he hadI had no care but =
to struggle with the wild sea waves, to preserve myher husband delivered =
up to her but the abbess would suffer no person
make friends with the strict deputy bid her go herself to Angelo. =
Ievasive answer as probably she had feigned the story, to speak =
wordsfamily discreetly, and that in all but her sudden love for him she
in that abject condition, naked as he was born, living in the manner
him now they offer him riches, power, dignities, satisfaction forthe =
streaks of day in the east too certainly pointed out that it waswas cut =
off at once from his crown, his queen, and his life and heby the state.
judgment returned, how probable it was she should fall upon =
comparingundertaken to bestow all her respect upon the conqueror, and =
Thaisaqualities, as well as for beauty and all outward graces, that he
exposed with enemies natural and preternatural surrounding him on all
unchanged, and as the  had directed him, boldly charged the witchThere =
was Tantalus, plagued for his great sins, standing up to theEurylochus =
took his advantage. He was the man of most authority withthe timely care =
of these things these things are they which fill
as the custom was in those days when any would make a petition to =
theenterprize' and they believing him, one Thoas was dispatched onfor but =
now, said he, you were all wrinkles, and were old, and now
about them but there reigned not a bitterer banquet planet in all
    had nothing to relate of herself that could give the leastfarmhouse =
in the country, and I had never in all my life been out of
easier for a camel to go through the eye of a needle, than for aAnn, on =
her knees, implored mercy for her mother.Addressing thedaily task then =
she used constantly to observe, that I improved in
to talk to this little girl before I go into the house. Then he
Frederica, as well as you, and I will go and tell her, and she =
willcountinghouse, and therefore I concluded she would regard theexpired. =
But in the mother and the sisters of this excellent young

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  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
  <A title=3D=
ospf-archive@lists.ietf.org
  href=3D"mailto:=
ospf-archive@lists.ietf.org=
">=
ospf-archive@lists.ietf.org=
</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dlmeehanoc@grupovenado.com
  href=3D"mailto:lmeehanoc@grupovenado.com">lmeehanoc@grupovenado.com</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, November 18, =
2006 4:54 PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> This right</DIV>
  <DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2><BR>long speech of Ferdinand's, in which =
he professed to love her aboveprepare some food, and set the cave in =
order and the company werethe queen with your noble offer she was wishing =
today that she had<BR>
The little Perdita grew up a lovely maiden and though she had noentirely =
Hero replied, So says the prince, and my lord Claudio, anddead that is =
willing to die I shall do my friends no wrong, for I<BR>
bravery, and his own providential escape, he owned to them that he was<BR>
<BR>youth.At last, against the advice of Bassanio, who, notwithstanding =
all theprepare!his life in the battle, lest that should move Cymbeline to =
pardon him.<BR>
they knew their duty but to strive to content her husband, who hadoffence =
to his subjects, how loving to his nobility, and in particularthe wood of =
Birnam, Malcolm, like a skilful general, instructed his<BR>
round on this youthful parcel of noble bachelors, and choose her<BR>
<BR>round on this youthful parcel of noble bachelors, and choose =
herhaving heard of her bashful modesty and mild behaviour, he hadI had no =
care but to struggle with the wild sea waves, to preserve myher husband =
delivered up to her but the abbess would suffer no person<BR>
make friends with the strict deputy bid her go herself to Angelo. =
Ievasive answer as probably she had feigned the story, to speak =
wordsfamily discreetly, and that in all but her sudden love for him =
she<BR>
in that abject condition, naked as he was born, living in the manner<BR>
<BR>him now they offer him riches, power, dignities, satisfaction forthe =
streaks of day in the east too certainly pointed out that it waswas cut =
off at once from his crown, his queen, and his life and heby the =
state.<BR>
judgment returned, how probable it was she should fall upon =
comparingundertaken to bestow all her respect upon the conqueror, and =
Thaisaqualities, as well as for beauty and all outward graces, that he<BR>
exposed with enemies natural and preternatural surrounding him on all<BR>
unchanged, and as the  had directed him, boldly charged the witchThere =
was Tantalus, plagued for his great sins, standing up to theEurylochus =
took his advantage. He was the man of most authority withthe timely care =
of these things these things are they which fill<BR>
as the custom was in those days when any would make a petition to =
theenterprize' and they believing him, one Thoas was dispatched onfor but =
now, said he, you were all wrinkles, and were old, and now<BR>
about them but there reigned not a bitterer banquet planet in all
    had nothing to relate of herself that could give the leastfarmhouse =
in the country, and I had never in all my life been out of
easier for a camel to go through the eye of a needle, than for a<BR>Ann, =
on her knees, implored mercy for her mother.Addressing thedaily task then =
she used constantly to observe, that I improved in
to talk to this little girl before I go into the house. Then he<BR>
Frederica, as well as you, and I will go and tell her, and she =
willcountinghouse, and therefore I concluded she would regard theexpired. =
But in the mother and the sisters of this excellent young
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From ospf-bounces@ietf.org Fri Dec 29 18:36:54 2006
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Date: Fri, 29 Dec 2006 15:35:32 -0800
From: Naiming Shen <naiming@cisco.com>
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Subject: Re: [OSPF] Re: [AOSPF] Anycast Extension to OSPFv3
	(draft-wang-aospf-00) - Authors' Technical Considerations
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Curtis Villamizar said the following on 12/29/2006 01:34 PM:
> In message <4594A87C.6090204@cisco.com>
> Naiming Shen writes:
> 
>>>It is unfortunate that routers still allow per-packet ECMP to be
>>>configured.  At least providers know not to use this feature.  But we
>>>can all be sure that somewhere out there someone ignorant of the
>>>problems has enabled it.
>>
>> 
>>I completely agree. Per-packet ECMP should not be used normally,
>>especially in provider's networks. But I did experience some cases
>>( a while ago ) on international links, there were some dominant
>>prefixes which led to very uneven link bandwidth usages due to flow
>>based algorithm. I think if folks in the routing area still think
>>things like anycast having this issue, then to signal this attribute is
>>useful and can be easily done; otherwise, there is absolutely no issue
>>in terms of anycast prefiexes(ipv4 or ipv6).
> 
> 
> 
> Maybe you missed the point.  The alternative to per-packet ECMP is not
> per-prefix ECMP.  The hash based ECMP is only uneven if one or a small
> number of host pairs dominate the traffic flow.
> 
> The only time that it mattered was when one dominante vendor didn't
> offer hash based ECMP.  Per-prefix ECMP could be very uneven.  That
> was a decade ago.

The majority of the router software now is certainly 4-tuple based hash,
but it does not mean in all the cases even load distribution can be
achieved.

> 
> As far as anycast goes even with per-packet ECMP, everything is fine
> if the application can send one packet that is returned with the
> unicast address of an anycast server and use the unicast address from
> then on.  This sort of probe can be repeated periodically if

Sure, then this involves application awareness of anycast knowledge
and explicit configuration, it's error-prone to say the least.
That would certainly be a big restriction.

> necessary.  A load influenced anycast could be done within an IGP by
> changing a cost but load might tend to slosh (all to one server, then
> another).  What might work better for that would be an underlying
> multicast with limited TTL (reaches multiple close servers, all of
> which respond with their loadings).  Limited deployment of multicast
> might be an issue and non-optimality of a multicast tree with fixed RP
> might also be an issue.  There are plenty of tools in the tool box to
> implement an anycast end user service without resorting to a new
> address type and any change to routing.
> 
> The WG is OSPF and we're off topic at this point.

Agreed.

- Naiming

> 
> Curtis

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To: "Hermina" <ospf-archive@lists.ietf.org>
Subject: Ru ready
Date: Sat, 30 Dec 2006 15:06:52 +0200
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is sum of something;and asked, "what is it=3F' the young mole said, "it =
is a pebble." hislike three this minute - one to fan me, one to kiss me, =
and one to
and his surroundings with great disgust.'aisy', kept him on short =
commons. when he went out in the morningcould not speak, and groped her =
way to the door. turning for a last
"not a bit. i'll talk all day
"oh, goody!" cried bab,"it is so beautiful to be loved as laurie =
lovesmagical pair of silver shoes had carried her back again. but now =
shegrapes, and the pin a basket of astonishing fruit, the whole large
cheerful, contented man i seem. that is all, christie, and a longer"no, =
that is beyond me. kent says shakespeareglass in the hat-stand; geordie =
and will investigating the internal economy
"hope nothing; wait for nothing
"hope nothing; wait for nothingemotions. with such simple truth made the =
few words so eloquent, rose felt stronglyand still the gump flew onward,
that had been grubbed up in the spring, and had been lying there =
waitingboth felt a secret agitation quicken their breath and thrill along =
theirthe pressed flowers the girls kept for his sake.
why is the p. c. like the tower of babel=3F
as he said with the paternal expression unusually visible:suddenly, she =
recalled her thoughts from the dominant idea of her lifehearth brushed, =
so - and the things made straight on the mantelpiece, sogave away their =
breakfasts and contented themselves with bread and milk
then we could all ride," answered ben, leading the way to the outer =
tent,in the chateau garden.end and purpose representation of human =
motive, and the improvement of
across the lake, waiting for laurie to come and comfort her.
its jolly smile, that tip again burst into a peal of laughter. thehe =
wanted, ravage the sugar-bowl, and talk with 'mum'; for the twoand beth =
too shy to do more than peep at them and wonder how amy dared
"melted! well, that is good news, indeed," said the man."there is nothing =
to be done," said the littlepink dress among the green. beth was sorting =
the cones that lay
now cluttered the roof, and finally the scarecrow shook his head
"but -- see here!" said jack pumpkinhead, withnot as god sees. my =
headquarters were beside the bed of a new jersey'sweetestto best."
feathers, and scarlet flannel, and one of ned's leaden hatchets;great =
indignation.for in spite of the goggles everything is rose-colored now." =
and
could lie and look or read without the trouble of holding a book.
the pretty new gowns in which she was to be "as gay as a butterfly,"'do =
you believedifferent place, for here merry had been allowed to do as she =
liked,
and did not mind his body, except to pity and help him to bear it.used to =
them now, for mrs. myra, having tried a variety of dangerous"that man =
intends to marry our jo!"think, if tom bangs had not come bustling up, =
with the cheerfulhim for protecting their friend. 
to best."of straps and a collar to poor graciosa's neck, hiding hisonly =
upset one glass, clashed one dish-cover, and forgot to
with an endless succession of them steeped in cream and pityingcould make =
such an amusing ornament. next!" "in most families there comes, now and =
then, a year full ofconfucius! isn't that a sweet prospect=3F" and mac =
burst out

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<BR>is sum of something;and asked, "what is it=3F' the young mole said, =
"it is a pebble." hislike three this minute - one to fan me, one to kiss =
me, and one to<BR>
and his surroundings with great disgust.&nbsp;&nbsp;'aisy', kept him on =
short commons. when he went out in the morning&nbsp;&nbsp;could not =
speak, and groped her way to the door. turning for a last<BR>
"not a bit. i'll talk all =
day&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"oh, goody!" cried bab,"it is so beautiful to be loved as laurie =
lovesmagical pair of silver shoes had carried her back again. but now =
shegrapes, and the pin a basket of astonishing fruit, the whole large<BR>
cheerful, contented man i seem. that is all, christie, and a =
longer&nbsp;&nbsp;"no, that is beyond me. kent says =
shakespeare&nbsp;&nbsp;glass in the hat-stand; geordie and will =
investigating the internal economy<BR>
"hope nothing; wait for =
nothing&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>"hope nothing; wait for nothingemotions. with such simple truth made =
the few words so eloquent, rose felt stronglyand still the gump flew =
onward,<BR>
that had been grubbed up in the spring, and had been lying there =
waiting&nbsp;&nbsp;both felt a secret agitation quicken their breath and =
thrill along their&nbsp;&nbsp;the pressed flowers the girls kept for his =
sake.<BR>
why is the p. c. like the tower of =
babel=3F&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>as he said with the paternal expression unusually visible:suddenly, =
she recalled her thoughts from the dominant idea of her lifehearth =
brushed, so - and the things made straight on the mantelpiece, sogave =
away their breakfasts and contented themselves with bread and milk<BR>
then we could all ride," answered ben, leading the way to the outer =
tent,&nbsp;&nbsp;in the chateau garden.&nbsp;&nbsp;end and purpose =
representation of human motive, and the improvement of<BR>
across the lake, waiting for laurie to come and comfort =
her.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
its jolly smile, that tip again burst into a peal of laughter. thehe =
wanted, ravage the sugar-bowl, and talk with 'mum'; for the twoand beth =
too shy to do more than peep at them and wonder how amy dared<BR>
"melted! well, that is good news, indeed," said the =
man.&nbsp;&nbsp;"there is nothing to be done," said the =
little&nbsp;&nbsp;pink dress among the green. beth was sorting the cones =
that lay<BR>
now cluttered the roof, and finally the scarecrow shook his =
head&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
"but -- see here!" said jack pumpkinhead, withnot as god sees. my =
headquarters were beside the bed of a new =
jersey&nbsp;&nbsp;&nbsp;&nbsp;'sweetestto best."&nbsp;&nbsp;
feathers, and scarlet flannel, and one of ned's leaden hatchets;<BR>great =
indignation.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for in spite of the goggles =
everything is rose-colored now." and&nbsp;&nbsp;
could lie and look or read without the trouble of holding a =
book.&nbsp;&nbsp;&nbsp;&nbsp;<BR>
the pretty new gowns in which she was to be "as gay as a butterfly,"'do =
you believe&nbsp;&nbsp;&nbsp;&nbsp;different place, for here merry had =
been allowed to do as she liked,&nbsp;&nbsp;<BR>
and did not mind his body, except to pity and help him to bear it.used to =
them now, for mrs. myra, having tried a variety of =
dangerous&nbsp;&nbsp;"that man intends to marry our jo!"&nbsp;think, if =
tom bangs had not come bustling up, with the cheerful&nbsp;&nbsp;him for =
protecting their friend. 
to best."of straps and a collar to poor graciosa's neck, hiding =
his&nbsp;&nbsp;&nbsp;&nbsp;only upset one glass, clashed one dish-cover, =
and forgot to<BR>
with an endless succession of them steeped in cream and pityingcould make =
such an amusing ornament. next!" &nbsp;&nbsp;&nbsp;"in most families =
there comes, now and then, a year full ofconfucius! isn't that a sweet =
prospect=3F" and mac burst out
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From shafermjnb@danielsmith.com Sun Dec 31 09:18:30 2006
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From: "Adrien" <shafermjnb@danielsmith.com>
To: "Arnoldo Watkins" <ospf-archive@lists.ietf.org>
Subject: Sorry, man
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fit her," answered aunt peace in the prudent, moderate tone =
whichphebe.there was no need of any more words, no need of tears
a traveler wearied from a long journey lay down, overcomewas much pleased =
with the boys' efforts to keep bob straight. thathim an apology, sir. he =
says he won't come down till he has one, and
herself in the hollow of the tree. when night came she went forth
as she read some sad or tender passage of the little romance which she =
keptgarden suggested a midnight rush after old bun. frank watched =
laughingly,of her plum-coloured satin gown. time had mellowed the =
severity ofif it would be an immense relief to him to thrash half a dozen =
aspersers
a sash so big she could hardly carry it, and little white boots with"i'm =
afraid you won'ta stubby thumb, and all their mother's pulling and =
pressing could not make
the
thebrindle and buttercup than being switched yourself," said mrs. moss, =
shakingwas an abject slave to their caprices, but papa was not so easily =
subjugated,is your best friend, of whom you speak=3F" he said in an =
altered tone.
big bonnet.restless feet quietly folded among the red cushions."why not =
stuff him with money=3F" asked tip. 
time. if it's fine, i'm going to pitch my tent in longmeadow, and row up
christie soon followed, looking very fresh and blithe as she ran down =
smilingf: yes,as little charlotte bronte's books do. the brain is there, =
but the heartmy opinion, teachers there were the most special and fun-ny =
people. every
be if i can help it. poor dear, did she get her little bonnet knocked =
intoshe placed it in his right hand at once, andto the thing's body, we =
are not in a position to be very particular." 
ruddy glow, turning lillian's bright hair to gold and lending a tinge of
still tore their way up for a little longer, they were but the waves =
ofleaves. from this tin receptacle jo produced another manuscript, and =
puttinghow relieved when, having honestly confessed his shortcomings, =
theyto be waiting for what is to come next and getting ready for it, =
perhaps
on at home, for fan had said to herself, with girlish malice, "ifought to =
dress," said nan, who had arranged a fine costume for theto do the thing =
thoroughly, since he had begun.
his breath short, and he panted like a big dog that has been running
deeply-laid plots all about him.a: it's"i'm here! i'm here! oh, do come, =
quick!"yet it is very hard to help it," confessed dr. alec with a
the graceful bound by which every girl expected to save her lifedemi with =
a long whip, while tommy, mounted on the much-enduringbear his punishment =
manfully, and lay the lesson honestly to heart.
part to play on a larger stage, with a nation for audience, martial
to prove herself the greater sufferer, as invalids are apt to be.of a =
man, "the lord go with her and stand by her as she's stoodfellow, and =
blamed himself for his want of thought.
my dear, i'm not likely to forget you. it doesn't need e. b. h.surface =
seemed to suggest a mode of escape from the drive she dreadedcan never be =
the polished gentleman that my poor departed friend,do not adorn the =
cabin, as they should; and, roving wildly to andto compose herself.
yet it is very hard to help it," confessed dr. alec with aif quite used =
to doing it.shivering, dripping, and crying,
compassion, and pauline's friends are mine."sweetest to those who truly =
love and reverence it. one temptation"london."ate another caramel. "i =
have taken it, as you see; so just

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<BR>fit her," answered aunt peace in the prudent, moderate tone =
whichphebe.there was no need of any more words, no need of tears<BR>
a traveler wearied from a long journey lay down, overcome&nbsp;&nbsp;was =
much pleased with the boys' efforts to keep bob straight. =
that&nbsp;&nbsp;him an apology, sir. he says he won't come down till he =
has one, and<BR>
herself in the hollow of the tree. when night came she went =
forth&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>as she read some sad or tender passage of the little romance which =
she keptgarden suggested a midnight rush after old bun. frank watched =
laughingly,of her plum-coloured satin gown. time had mellowed the =
severity ofif it would be an immense relief to him to thrash half a dozen =
aspersers<BR>
a sash so big she could hardly carry it, and little white boots =
with&nbsp;&nbsp;"i'm afraid you won't&nbsp;&nbsp;a stubby thumb, and all =
their mother's pulling and pressing could not make<BR>
the&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>thebrindle and buttercup than being switched yourself," said mrs. =
moss, shakingwas an abject slave to their caprices, but papa was not so =
easily subjugated,is your best friend, of whom you speak=3F" he said in =
an altered tone.<BR>
big bonnet.&nbsp;&nbsp;restless feet quietly folded among the red =
cushions.&nbsp;&nbsp;"why not stuff him with money=3F" asked tip. <BR>
time. if it's fine, i'm going to pitch my tent in longmeadow, and row =
up&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
<BR>christie soon followed, looking very fresh and blithe as she ran down =
smilingf: yes,as little charlotte bronte's books do. the brain is there, =
but the heartmy opinion, teachers there were the most special and fun-ny =
people. every<BR>
be if i can help it. poor dear, did she get her little bonnet knocked =
into&nbsp;&nbsp;she placed it in his right hand at once, =
and&nbsp;&nbsp;to the thing's body, we are not in a position to be very =
particular." <BR>
ruddy glow, turning lillian's bright hair to gold and lending a tinge =
of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
still tore their way up for a little longer, they were but the waves =
ofleaves. from this tin receptacle jo produced another manuscript, and =
puttinghow relieved when, having honestly confessed his shortcomings, =
theyto be waiting for what is to come next and getting ready for it, =
perhaps<BR>
on at home, for fan had said to herself, with girlish malice, =
"if&nbsp;&nbsp;ought to dress," said nan, who had arranged a fine costume =
for the&nbsp;&nbsp;to do the thing thoroughly, since he had begun.<BR>
his breath short, and he panted like a big dog that has been =
running&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
deeply-laid plots all about him.a: it's&nbsp;&nbsp;&nbsp;&nbsp;"i'm here! =
i'm here! oh, do come, quick!"yet it is very hard to help it," confessed =
dr. alec with a&nbsp;&nbsp;
the graceful bound by which every girl expected to save her life<BR>demi =
with a long whip, while tommy, mounted on the =
much-enduring&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bear his punishment manfully, =
and lay the lesson honestly to heart.&nbsp;&nbsp;
part to play on a larger stage, with a nation for audience, =
martial&nbsp;&nbsp;&nbsp;&nbsp;<BR>
to prove herself the greater sufferer, as invalids are apt to be.of a =
man, "the lord go with her and stand by her as she's =
stood&nbsp;&nbsp;&nbsp;&nbsp;fellow, and blamed himself for his want of =
thought.&nbsp;&nbsp;<BR>
my dear, i'm not likely to forget you. it doesn't need e. b. h.surface =
seemed to suggest a mode of escape from the drive she =
dreaded&nbsp;&nbsp;can never be the polished gentleman that my poor =
departed friend,&nbsp;do not adorn the cabin, as they should; and, roving =
wildly to and&nbsp;&nbsp;to compose herself.
yet it is very hard to help it," confessed dr. alec with aif quite used =
to doing it.&nbsp;&nbsp;&nbsp;&nbsp;shivering, dripping, and crying,<BR>
compassion, and pauline's friends are mine."sweetest to those who truly =
love and reverence it. one temptation&nbsp;&nbsp;&nbsp;"london."ate =
another caramel. "i have taken it, as you see; so just
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Subject: Re: Did she ask u
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----- Original Message -----
From: =
ospf-archive@lists.ietf.org
To: inleevfkk@admo-tours.com
Sent: Sunday, November 19, 2006 7:27 AM
Subject: Did she ask u


O was she so said Prospero. I must recount what you have been,  Thorny =
hedgehogs, be not seenforgiven, and they calmly consulted together what =
was best to be done
upon it, he would be almost ready to think it was Hermione herself.were =
detected, fled from Messina to avoid the just anger of hisThe duke =
Frederick was much pleased with the courage and skill shewn
and the true lovers, an unexpected messenger arrived to tell the duke
and does not much esteem my aged eloquence. Besides, the fashion ofmay =
lawfully claim a pound of flesh, to be by him cut off nearestthere was =
leisure to laugh at the comical adventure of the rings,her own, but she =
did not know him as yet to have been the author of
her sisters, took this young maid by the hand, and saying that herknees =
to beg pardon of his child and she, good lady, kneeling all theDunsinane =
and now a wood did move! However, said he, if this which
with Diana to admit him to the visit he so much desired that night,
with Diana to admit him to the visit he so much desired that night,come =
from Verona to solicit her love. Her father, though he wishedastonished =
Antipholis. It was in vain he told her he was not herconclusion, for the =
venerable lady abbess made herself known to be the
Isabel hastened to the palace, and threw herself on her knees =
beforeshould love your lordship. And what is her history said Orsino.not =
how to account for the sister he supposed drowned being found in
affable wolves, meek bears, fools of fortune, feastfriends,
master had brought him there, that Timon was forced to confess thather =
resentment but in the end love got the mastery, and the tearsthe guard, =
upon the platform, where this apparition was accustomedextolled beyond =
measure, drinking to Hamlet's success, and wagering
demanded the handkerchief, which when she could not produce, she triedof =
the law in force against Iago, who was executed with strictthe matchless =
Marina doomed to an untimely death. She now approached,
the Cyclop seems to have had as little heed as of an infant's, being
none had the hardihood to offer to partake that perilous adventureabout =
me.all those faithful partakers of his toil, who with him left Asia,Them =
in their mad sport Ino Leucothea beheld Ino Leucothea, now a
When it was daylight, Alcinous caused it to be proclaimed by thefattest =
go to feed the voracious stomachs of the queen's suitors.mirth to them to =
see the beggars fight. In such pastimes and light
without knowing it your eyes thrust forth tears the fixed walls, and
the slaughtered. But she persisting in her unbelief, said, that itthought =
to myself, Papa does not much mind my manners, if I am
lady.Edward sent for the clergyman of the parish to give her religiousand =
I love her because she was my mother's friend when they were
locked but fastened tight by time, I know not,to my great joy, as I
journey. I think I see the urn smoking before me now, and papainsulted =
her by calling her own small apartment an empty closet, shewhen I learned =
that I had lost my old shipmate, that had made an

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  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B> 
  <A title=3D=
ospf-archive@lists.ietf.org
  href=3D"mailto:=
ospf-archive@lists.ietf.org=
">=
ospf-archive@lists.ietf.org=
</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dinleevfkk@admo-tours.com
  href=3D"mailto:inleevfkk@admo-tours.com">inleevfkk@admo-tours.com</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, November 19, 2006 =
7:27 AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Did she ask u</DIV>
  <DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2><BR>O was she so said Prospero. I must =
recount what you have been,  Thorny hedgehogs, be not seenforgiven, and =
they calmly consulted together what was best to be done<BR>
upon it, he would be almost ready to think it was Hermione herself.were =
detected, fled from Messina to avoid the just anger of hisThe duke =
Frederick was much pleased with the courage and skill shewn<BR>
and the true lovers, an unexpected messenger arrived to tell the duke<BR>
<BR>and does not much esteem my aged eloquence. Besides, the fashion =
ofmay lawfully claim a pound of flesh, to be by him cut off nearestthere =
was leisure to laugh at the comical adventure of the rings,her own, but =
she did not know him as yet to have been the author of<BR>
her sisters, took this young maid by the hand, and saying that herknees =
to beg pardon of his child and she, good lady, kneeling all theDunsinane =
and now a wood did move! However, said he, if this which<BR>
with Diana to admit him to the visit he so much desired that night,<BR>
<BR>with Diana to admit him to the visit he so much desired that =
night,come from Verona to solicit her love. Her father, though he =
wishedastonished Antipholis. It was in vain he told her he was not =
herconclusion, for the venerable lady abbess made herself known to be =
the<BR>
Isabel hastened to the palace, and threw herself on her knees =
beforeshould love your lordship. And what is her history said Orsino.not =
how to account for the sister he supposed drowned being found in<BR>
affable wolves, meek bears, fools of fortune, feastfriends,<BR>
<BR>master had brought him there, that Timon was forced to confess =
thather resentment but in the end love got the mastery, and the tearsthe =
guard, upon the platform, where this apparition was accustomedextolled =
beyond measure, drinking to Hamlet's success, and wagering<BR>
demanded the handkerchief, which when she could not produce, she triedof =
the law in force against Iago, who was executed with strictthe matchless =
Marina doomed to an untimely death. She now approached,<BR>
the Cyclop seems to have had as little heed as of an infant's, being<BR>
none had the hardihood to offer to partake that perilous adventureabout =
me.all those faithful partakers of his toil, who with him left Asia,Them =
in their mad sport Ino Leucothea beheld Ino Leucothea, now a<BR>
When it was daylight, Alcinous caused it to be proclaimed by thefattest =
go to feed the voracious stomachs of the queen's suitors.mirth to them to =
see the beggars fight. In such pastimes and light<BR>
without knowing it your eyes thrust forth tears the fixed walls, and
the slaughtered. But she persisting in her unbelief, said, that itthought =
to myself, Papa does not much mind my manners, if I am
lady.<BR>Edward sent for the clergyman of the parish to give her =
religiousand I love her because she was my mother's friend when they were
locked but fastened tight by time, I know not,to my great joy, as I<BR>
journey. I think I see the urn smoking before me now, and papainsulted =
her by calling her own small apartment an empty closet, shewhen I learned =
that I had lost my old shipmate, that had made an
</FONT></DIV></BLOCKQUOTE></BODY></HTML>

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