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From: Xuxiaohu <xuxiaohu@huawei.com>
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From nobody Fri Jun  5 07:18:06 2015
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Subject: [Bier] I-D Action: draft-ietf-bier-mpls-encapsulation-01.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Bit Indexed Explicit Replication Working Group of the IETF.

        Title           : Encapsulation for Bit Index Explicit Replication in MPLS Networks
        Authors         : IJsbrand Wijnands
                          Eric C. Rosen
                          Andrew Dolganow
                          Jeff Tantsura
                          Sam K Aldrin
	Filename        : draft-ietf-bier-mpls-encapsulation-01.txt
	Pages           : 15
	Date            : 2015-06-05

Abstract:
   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "multicast domain",
   without requiring intermediate routers to maintain any per-flow state
   or to engage in an explicit tree-building protocol.  When a multicast
   data packet enters the domain, the ingress router determines the set
   of egress routers to which the packet needs to be sent.  The ingress
   router then encapsulates the packet in a BIER header.  The BIER
   header contains a bitstring in which each bit represents exactly one
   egress router in the domain; to forward the packet to a given set of
   egress routers, the bits corresponding to those routers are set in
   the BIER header.  The details of the encapsulation depend on the type
   of network used to realize the multicast domain.  This document
   specifies the BIER encapsulation to be used in an MPLS network.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-mpls-encapsulation/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-bier-mpls-encapsulation-01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-mpls-encapsulation-01


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

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


From nobody Fri Jun  5 07:22:57 2015
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Draft-ietf-bier-mpls-encapsulation-01 make the following changes to the 
BIER encapsulation header:

- The first nibble is now 0x101, and is not to be used as a version field.

- The second nibble is now a four-bit version field.  The draft defines 
version 0.  Version 15 is reserved, and can be used for experimental 
purposes.

- The four-bit "proto" field (identifying the type of payload) has been 
moved to the last word of the header, immediately preceding the BFIR-id, 
and taking four bits of the 16 bits that had previously been reserved.

- A new proto value, "OAM" has been defined.

- The last word in the header now begins with two OAM bits, to be used 
for passive performance monitoring.  (This bits were formerly reserved.)

- There are now 10 reserved bits in the last word.

The draft now also requests an IANA registry for the "proto" field, and 
adds a few details on what to do if some of the header fields contain 
illegal values.

Please take a look and provide your comments.


From nobody Thu Jun 11 10:05:29 2015
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From nobody Fri Jun 12 11:21:04 2015
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From: Tony Przygienda <tonysietf@gmail.com>
To: "bier@ietf.org" <bier@ietf.org>
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Subject: [Bier] FYI: Disputed Draft Authorship IESG Statement
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for the info of the group participants and authors ...

--- tony

-----Original Message-----
From: IETF-Announce [mailto:ietf-announce-bounces@ietf.org] On Behalf Of
The IESG
Sent: Thursday, June 11, 2015 2:32 PM
To: IETF Announcement List
Subject: IESG Statement on Internet Draft Authorship

The IESG has received some reports of IETF participants having been
listed as document authors on drafts without their consent ("surprised
authorship"). In some cases, the surprised authors had never seen the
draft that surprised them. It appears that some draft authors think that
including other participants as authors is a way to show support for the
concepts in the document and gain acceptance for those concepts. This
may be thought of as especially useful if the additional authors are
established IETF participants.

Adding names of IETF participants who did not actually work on a
proposal might seem to be a low-risk way of demonstrating "support", but
this is very clearly not an acceptable practice: no one should ever be
added to the list of authors on a draft unless that person has consented
to it and has contributed significantly to the development of the draft.

The practice of adding surprised authors is

  - not in line with the IETF culture, where it's the technical issues
    that matter, not who the authors or supporters are;
  - unethical, as it is wrong to claim support from someone who has not
    consented to it;
  - misleading in terms of support; and
  - problematic in terms of IPR disclosures (BCPs 78 and 79).

To emphasize this last point, the person submitting an Internet-Draft is
asserting that "This Internet-Draft is submitted in full conformance
with the provisions of BCP 78 and BCP 79". A submitter who has not
discussed this with all the listed authors cannot make that claim, and
this can cause procedural and legal problems later.

All authors need to be aware of the =E2=80=8BRFC Editor's statement on
authorship [1], especially as it relates to responsibility for the
document's contents. The IESG strongly recommends that all drafts have
explicit permission from all authors to have their names listed before
the draft is submitted.

If you feel that you are impacted by the above issues, please talk to
your Area Director or contact the IESG by =E2=80=8Bsending email to
<iesg@ietf.org>. As the administrator of the I-D repository (regardless
of the source or intended stream for the draft), the IESG will handle
each case of disputed authorship on a case-by-base basis. All reports
will be investigated, and substantiated claims will be met with
corrective actions.

The default corrective action will be the replacement of the offending
draft with a "disputed authorship" tombstone. Such a tombstone would:

  - Be published as a successor to the offending draft,
  - Have the offended IETF participant listed as the only author,
  - Will state "The author listed on this tombstone Internet-Draft has
    stated that he/she should not have been listed as an author on the
    previous version. The IETF considers being added as an author
    without one's permission as unethical. The default behaviour of the
    IESG in such cases is to approve replacement of the offending draft
    with this tombstone. Please direct any queries to the author listed
    here."

[1] http://www.rfc-editor.org/pipermail/rfc-interest/2015-May/008869.html

--20cf301cc3aec332430518562ae6
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div><span style=3D"font-size:12.8000001907349px">for the =
info of the group participants and authors ...=C2=A0</span></div><div><span=
 style=3D"font-size:12.8000001907349px"><br></span></div><div><span style=
=3D"font-size:12.8000001907349px">--- tony=C2=A0</span></div><span style=3D=
"font-size:12.8000001907349px"><div><span style=3D"font-size:12.80000019073=
49px"><br></span></div>-----Original Message-----</span><br style=3D"font-s=
ize:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">From: =
IETF-Announce [mailto:</span><a href=3D"mailto:ietf-announce-bounces@ietf.o=
rg" style=3D"font-size:12.8000001907349px">ietf-announce-bounces@ietf.org</=
a><span style=3D"font-size:12.8000001907349px">] On Behalf Of The IESG</spa=
n><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.80=
00001907349px">Sent: Thursday, June 11, 2015 2:32 PM</span><br style=3D"fon=
t-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">To:=
 IETF Announcement List</span><br style=3D"font-size:12.8000001907349px"><s=
pan style=3D"font-size:12.8000001907349px">Subject: IESG Statement on Inter=
net Draft Authorship</span><br style=3D"font-size:12.8000001907349px"><br s=
tyle=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.800000190=
7349px">The IESG has received some reports of IETF participants having been=
</span><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:=
12.8000001907349px">listed as document authors on drafts without their cons=
ent (&quot;surprised</span><br style=3D"font-size:12.8000001907349px"><span=
 style=3D"font-size:12.8000001907349px">authorship&quot;). In some cases, t=
he surprised authors had never seen the</span><br style=3D"font-size:12.800=
0001907349px"><span style=3D"font-size:12.8000001907349px">draft that surpr=
ised them. It appears that some draft authors think that</span><br style=3D=
"font-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349px"=
>including other participants as authors is a way to show support for the</=
span><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:12=
.8000001907349px">concepts in the document and gain acceptance for those co=
ncepts. This</span><br style=3D"font-size:12.8000001907349px"><span style=
=3D"font-size:12.8000001907349px">may be thought of as especially useful if=
 the additional authors are</span><br style=3D"font-size:12.8000001907349px=
"><span style=3D"font-size:12.8000001907349px">established IETF participant=
s.</span><br style=3D"font-size:12.8000001907349px"><br style=3D"font-size:=
12.8000001907349px"><span style=3D"font-size:12.8000001907349px">Adding nam=
es of IETF participants who did not actually work on a</span><br style=3D"f=
ont-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">p=
roposal might seem to be a low-risk way of demonstrating &quot;support&quot=
;, but</span><br style=3D"font-size:12.8000001907349px"><span style=3D"font=
-size:12.8000001907349px">this is very clearly not an acceptable practice: =
no one should ever be</span><br style=3D"font-size:12.8000001907349px"><spa=
n style=3D"font-size:12.8000001907349px">added to the list of authors on a =
draft unless that person has consented</span><br style=3D"font-size:12.8000=
001907349px"><span style=3D"font-size:12.8000001907349px">to it and has con=
tributed significantly to the development of the draft.</span><br style=3D"=
font-size:12.8000001907349px"><br style=3D"font-size:12.8000001907349px"><s=
pan style=3D"font-size:12.8000001907349px">The practice of adding surprised=
 authors is</span><br style=3D"font-size:12.8000001907349px"><br style=3D"f=
ont-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">=
=C2=A0 - not in line with the IETF culture, where it&#39;s the technical is=
sues</span><br style=3D"font-size:12.8000001907349px"><span style=3D"font-s=
ize:12.8000001907349px">=C2=A0 =C2=A0 that matter, not who the authors or s=
upporters are;</span><br style=3D"font-size:12.8000001907349px"><span style=
=3D"font-size:12.8000001907349px">=C2=A0 - unethical, as it is wrong to cla=
im support from someone who has not</span><br style=3D"font-size:12.8000001=
907349px"><span style=3D"font-size:12.8000001907349px">=C2=A0 =C2=A0 consen=
ted to it;</span><br style=3D"font-size:12.8000001907349px"><span style=3D"=
font-size:12.8000001907349px">=C2=A0 - misleading in terms of support; and<=
/span><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:1=
2.8000001907349px">=C2=A0 - problematic in terms of IPR disclosures (BCPs 7=
8 and 79).</span><br style=3D"font-size:12.8000001907349px"><br style=3D"fo=
nt-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">To=
 emphasize this last point, the person submitting an Internet-Draft is</spa=
n><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.80=
00001907349px">asserting that &quot;This Internet-Draft is submitted in ful=
l conformance</span><br style=3D"font-size:12.8000001907349px"><span style=
=3D"font-size:12.8000001907349px">with the provisions of BCP 78 and BCP 79&=
quot;. A submitter who has not</span><br style=3D"font-size:12.800000190734=
9px"><span style=3D"font-size:12.8000001907349px">discussed this with all t=
he listed authors cannot make that claim, and</span><br style=3D"font-size:=
12.8000001907349px"><span style=3D"font-size:12.8000001907349px">this can c=
ause procedural and legal problems later.</span><br style=3D"font-size:12.8=
000001907349px"><br style=3D"font-size:12.8000001907349px"><span style=3D"f=
ont-size:12.8000001907349px">All authors need to be aware of the =E2=80=8BR=
FC Editor&#39;s statement on</span><br style=3D"font-size:12.8000001907349p=
x"><span style=3D"font-size:12.8000001907349px">authorship [1], especially =
as it relates to responsibility for the</span><br style=3D"font-size:12.800=
0001907349px"><span style=3D"font-size:12.8000001907349px">document&#39;s c=
ontents. The IESG strongly recommends that all drafts have</span><br style=
=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349=
px">explicit permission from all authors to have their names listed before<=
/span><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:1=
2.8000001907349px">the draft is submitted.</span><br style=3D"font-size:12.=
8000001907349px"><br style=3D"font-size:12.8000001907349px"><span style=3D"=
font-size:12.8000001907349px">If you feel that you are impacted by the abov=
e issues, please talk to</span><br style=3D"font-size:12.8000001907349px"><=
span style=3D"font-size:12.8000001907349px">your Area Director or contact t=
he IESG by =E2=80=8Bsending email to</span><br style=3D"font-size:12.800000=
1907349px"><span style=3D"font-size:12.8000001907349px">&lt;</span><a href=
=3D"mailto:iesg@ietf.org" style=3D"font-size:12.8000001907349px">iesg@ietf.=
org</a><span style=3D"font-size:12.8000001907349px">&gt;. As the administra=
tor of the I-D repository (regardless</span><br style=3D"font-size:12.80000=
01907349px"><span style=3D"font-size:12.8000001907349px">of the source or i=
ntended stream for the draft), the IESG will handle</span><br style=3D"font=
-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">each=
 case of disputed authorship on a case-by-base basis. All reports</span><br=
 style=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.8000001=
907349px">will be investigated, and substantiated claims will be met with</=
span><br style=3D"font-size:12.8000001907349px"><span style=3D"font-size:12=
.8000001907349px">corrective actions.</span><br style=3D"font-size:12.80000=
01907349px"><br style=3D"font-size:12.8000001907349px"><span style=3D"font-=
size:12.8000001907349px">The default corrective action will be the replacem=
ent of the offending</span><br style=3D"font-size:12.8000001907349px"><span=
 style=3D"font-size:12.8000001907349px">draft with a &quot;disputed authors=
hip&quot; tombstone. Such a tombstone would:</span><br style=3D"font-size:1=
2.8000001907349px"><br style=3D"font-size:12.8000001907349px"><span style=
=3D"font-size:12.8000001907349px">=C2=A0 - Be published as a successor to t=
he offending draft,</span><br style=3D"font-size:12.8000001907349px"><span =
style=3D"font-size:12.8000001907349px">=C2=A0 - Have the offended IETF part=
icipant listed as the only author,</span><br style=3D"font-size:12.80000019=
07349px"><span style=3D"font-size:12.8000001907349px">=C2=A0 - Will state &=
quot;The author listed on this tombstone Internet-Draft has</span><br style=
=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349=
px">=C2=A0 =C2=A0 stated that he/she should not have been listed as an auth=
or on the</span><br style=3D"font-size:12.8000001907349px"><span style=3D"f=
ont-size:12.8000001907349px">=C2=A0 =C2=A0 previous version. The IETF consi=
ders being added as an author</span><br style=3D"font-size:12.8000001907349=
px"><span style=3D"font-size:12.8000001907349px">=C2=A0 =C2=A0 without one&=
#39;s permission as unethical. The default behaviour of the</span><br style=
=3D"font-size:12.8000001907349px"><span style=3D"font-size:12.8000001907349=
px">=C2=A0 =C2=A0 IESG in such cases is to approve replacement of the offen=
ding draft</span><br style=3D"font-size:12.8000001907349px"><span style=3D"=
font-size:12.8000001907349px">=C2=A0 =C2=A0 with this tombstone. Please dir=
ect any queries to the author listed</span><br style=3D"font-size:12.800000=
1907349px"><span style=3D"font-size:12.8000001907349px">=C2=A0 =C2=A0 here.=
&quot;</span><br style=3D"font-size:12.8000001907349px"><br style=3D"font-s=
ize:12.8000001907349px"><span style=3D"font-size:12.8000001907349px">[1]=C2=
=A0</span><a href=3D"http://www.rfc-editor.org/pipermail/rfc-interest/2015-=
May/008869.html" rel=3D"noreferrer" target=3D"_blank" style=3D"font-size:12=
.8000001907349px">http://www.rfc-editor.org/pipermail/rfc-interest/2015-May=
/008869.html</a><br></div>

--20cf301cc3aec332430518562ae6--


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Subject: Re: [Bier] New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
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Hi Jeffrey,

Looks good, nice idea, well written!

One comment, the below text took me a while to parse, I think it would =
help the reader to add a picture to indicate the =E2=80=98inner=E2=80=99 =
labels you are referring to.

   For a true BIER
   packet, the next inner most label is advertised by the same BFR that
   advertised the inner most label, so the original label stack minus
   the inner most label should get the generated ICMP/ICMPv6 message to
   the right place for further processing.

Thx,

Ice.


> On 11 Jun 2015, at 21:58, Jeffrey (Zhaohui) Zhang <zzhang@juniper.net> =
wrote:
>=20
> Hi,
>=20
> Please review and comment on this draft:
>=20
> =
https://www.ietf.org/internet-drafts/draft-zzhang-mpls-icmp-bier-00.txt
>=20
> Summary:
>=20
>   RFC3032 specifies that an LSR may generate ICMP messages if the
>   payload is IPv4 or IPv6.  Normally the ICMP messages are label
>   switched using the original label stack, and the egress LSR will =
then
>   forward the the messages to the source of the packet.
>=20
>   This document specifies an optional extension to generate ICMP
>   messages for BIER packets transported over LSPs.
>=20
>         BFIR --- BFR1  --- non-BFR1 --- non-BFR2 --- BFR2 --- BFER
>                   \...........tunnel................../
>                              ^
>                              |
>                              ttl-expiration on non-BFR1;
>                              generated ICMP message label switched to,
>                              and processed by BFR2
>=20
> Thanks!
> Jeffrey
>=20
> -----Original Message-----
> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]=20
> Sent: Thursday, June 11, 2015 3:20 PM
> To: Jeffrey (Zhaohui) Zhang; Jeffrey (Zhaohui) Zhang
> Subject: New Version Notification for =
draft-zzhang-mpls-icmp-bier-00.txt
>=20
>=20
> A new version of I-D, draft-zzhang-mpls-icmp-bier-00.txt
> has been successfully submitted by Zhaohui Zhang and posted to the
> IETF repository.
>=20
> Name:		draft-zzhang-mpls-icmp-bier
> Revision:	00
> Title:		MPLS ICMP for BIER Payload
> Document date:	2015-06-11
> Group:		Individual Submission
> Pages:		6
> URL:            =
https://www.ietf.org/internet-drafts/draft-zzhang-mpls-icmp-bier-00.txt
> Status:         =
https://datatracker.ietf.org/doc/draft-zzhang-mpls-icmp-bier/
> Htmlized:       =
https://tools.ietf.org/html/draft-zzhang-mpls-icmp-bier-00
>=20
>=20
> Abstract:
>   This document specifies an optional extension to generate ICMP
>   messages for BIER packets transported over LSPs.
>=20
>=20
>=20
>=20
>=20
> Please note that it may take a couple of minutes from the time of =
submission
> until the htmlized version and diff are available at tools.ietf.org.
>=20
> The IETF Secretariat
>=20
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier


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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: "IJsbrand Wijnands (iwijnand)" <ice@cisco.com>, "Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net>
Thread-Topic: [Bier] New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
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Date: Tue, 23 Jun 2015 14:01:04 +0000
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Cc: "Carlos Pignataro \(cpignata\)" <cpignata@cisco.com>, BIER <bier@ietf.org>
Subject: Re: [Bier] New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
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Hi Jeff,

I read the draft and it appears that the transit non-BFR node may need an
upgrade to support this feature. If it requires an upgrade, I think an
Operator could choose to upgrade to something that supports BIER. Or did
you had other use case in mind where the CP only will be upgraded?.

TO add to what Ice mentioned below, I assume, by =B3next inner most label=
=B2
you meant BIER label advertised by BFR2 in the draft topology?. If so, I
think it is not necessarily the same BFR that assigns the inner most
label. I assume you mean the same BFR will terminate the LSP?.

Section 2 mentions that the "ICMP message processing=B2 is outside the scop=
e
of the draft. We may need to further define on how the BFR (processing the
ICMP message) interpret the details from ICMP payload and generate the
BIER OAM Echo Reply. This is required so that the Initiator receives the
response for the right senders handle, seq. number etc.

Regards,
Nagendra


On 6/23/15, 4:27 AM, "IJsbrand Wijnands (iwijnand)" <ice@cisco.com> wrote:

>Hi Jeffrey,
>
>Looks good, nice idea, well written!
>
>One comment, the below text took me a while to parse, I think it would
>help the reader to add a picture to indicate the =8Cinner=B9 labels you ar=
e
>referring to.
>
>   For a true BIER
>   packet, the next inner most label is advertised by the same BFR that
>   advertised the inner most label, so the original label stack minus
>   the inner most label should get the generated ICMP/ICMPv6 message to
>   the right place for further processing.
>
>Thx,
>
>Ice.
>
>
>> On 11 Jun 2015, at 21:58, Jeffrey (Zhaohui) Zhang <zzhang@juniper.net>
>>wrote:
>>=20
>> Hi,
>>=20
>> Please review and comment on this draft:
>>=20
>> https://www.ietf.org/internet-drafts/draft-zzhang-mpls-icmp-bier-00.txt
>>=20
>> Summary:
>>=20
>>   RFC3032 specifies that an LSR may generate ICMP messages if the
>>   payload is IPv4 or IPv6.  Normally the ICMP messages are label
>>   switched using the original label stack, and the egress LSR will then
>>   forward the the messages to the source of the packet.
>>=20
>>   This document specifies an optional extension to generate ICMP
>>   messages for BIER packets transported over LSPs.
>>=20
>>         BFIR --- BFR1  --- non-BFR1 --- non-BFR2 --- BFR2 --- BFER
>>                   \...........tunnel................../
>>                              ^
>>                              |
>>                              ttl-expiration on non-BFR1;
>>                              generated ICMP message label switched to,
>>                              and processed by BFR2
>>=20
>> Thanks!
>> Jeffrey
>>=20
>> -----Original Message-----
>> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
>> Sent: Thursday, June 11, 2015 3:20 PM
>> To: Jeffrey (Zhaohui) Zhang; Jeffrey (Zhaohui) Zhang
>> Subject: New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
>>=20
>>=20
>> A new version of I-D, draft-zzhang-mpls-icmp-bier-00.txt
>> has been successfully submitted by Zhaohui Zhang and posted to the
>> IETF repository.
>>=20
>> Name:		draft-zzhang-mpls-icmp-bier
>> Revision:	00
>> Title:		MPLS ICMP for BIER Payload
>> Document date:	2015-06-11
>> Group:		Individual Submission
>> Pages:		6
>> URL:           =20
>>https://www.ietf.org/internet-drafts/draft-zzhang-mpls-icmp-bier-00.txt
>> Status:        =20
>>https://datatracker.ietf.org/doc/draft-zzhang-mpls-icmp-bier/
>> Htmlized:      =20
>>https://tools.ietf.org/html/draft-zzhang-mpls-icmp-bier-00
>>=20
>>=20
>> Abstract:
>>   This document specifies an optional extension to generate ICMP
>>   messages for BIER packets transported over LSPs.
>>=20
>>=20
>>=20
>>=20
>>=20
>> Please note that it may take a couple of minutes from the time of
>>submission
>> until the htmlized version and diff are available at tools.ietf.org.
>>=20
>> The IETF Secretariat
>>=20
>> _______________________________________________
>> BIER mailing list
>> BIER@ietf.org
>> https://www.ietf.org/mailman/listinfo/bier
>
>_______________________________________________
>BIER mailing list
>BIER@ietf.org
>https://www.ietf.org/mailman/listinfo/bier


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To: IJsbrand Wijnands <ice@cisco.com>
Thread-Topic: [Bier] New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
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From: "Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net>
To: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>, "IJsbrand Wijnands (iwijnand)" <ice@cisco.com>
Thread-Topic: [Bier] New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
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Cc: "Carlos Pignataro \(cpignata\)" <cpignata@cisco.com>, BIER <bier@ietf.org>
Subject: Re: [Bier] New Version Notification for draft-zzhang-mpls-icmp-bier-00.txt
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Nagendra,

> -----Original Message-----
> From: Nagendra Kumar Nainar (naikumar) [mailto:naikumar@cisco.com]
> Sent: Tuesday, June 23, 2015 10:01 AM
> To: IJsbrand Wijnands (iwijnand); Jeffrey (Zhaohui) Zhang
> Cc: BIER; Carlos Pignataro (cpignata)
> Subject: Re: [Bier] New Version Notification for draft-zzhang-mpls-icmp-
> bier-00.txt
>=20
> Hi Jeff,
>=20
> I read the draft and it appears that the transit non-BFR node may need
> an upgrade to support this feature. If it requires an upgrade, I think
> an Operator could choose to upgrade to something that supports BIER. Or
> did you had other use case in mind where the CP only will be upgraded?.

Yes the transit routers will need an upgrade for a little bit more intellig=
ence, w/o being required to parse the BIER encapsulation.

Even if it is a router that fully supports BIER, it is better to leave the =
processing to the BFR at the tunnel egress. In theory, the LSR and the BFR =
could even be in different bier sub-domains.

>=20
> TO add to what Ice mentioned below, I assume, by =B3next inner most label=
=B2
> you meant BIER label advertised by BFR2 in the draft topology?. If so, I
> think it is not necessarily the same BFR that assigns the inner most
> label. I assume you mean the same BFR will terminate the LSP?.

There is indeed a wording problem (see my reply to Ice earlier).

If you consider a more complicated situation, the transport tunnel itself c=
ould be stacked on top of another one, so the *next* inner *most* label is =
not necessarily for the LSP on which the TTL expired. However, the label st=
ack minus the inner most label (bier label) should get the packet to the BF=
R.

>=20
> Section 2 mentions that the "ICMP message processing=B2 is outside the
> scope of the draft. We may need to further define on how the BFR
> (processing the ICMP message) interpret the details from ICMP payload
> and generate the BIER OAM Echo Reply. This is required so that the
> Initiator receives the response for the right senders handle, seq.
> number etc.

Exactly. An additional draft, e.g. the BIER OAM draft, should address that.

Jeffrey

>=20
> Regards,
> Nagendra
>=20
>=20
> On 6/23/15, 4:27 AM, "IJsbrand Wijnands (iwijnand)" <ice@cisco.com>
> wrote:
>=20
> >Hi Jeffrey,
> >
> >Looks good, nice idea, well written!
> >
> >One comment, the below text took me a while to parse, I think it would
> >help the reader to add a picture to indicate the =8Cinner=B9 labels you =
are
> >referring to.
> >
> >   For a true BIER
> >   packet, the next inner most label is advertised by the same BFR that
> >   advertised the inner most label, so the original label stack minus
> >   the inner most label should get the generated ICMP/ICMPv6 message to
> >   the right place for further processing.
> >
> >Thx,
> >
> >Ice.
> >
> >
> >> On 11 Jun 2015, at 21:58, Jeffrey (Zhaohui) Zhang
> >><zzhang@juniper.net>
> >>wrote:
> >>
> >> Hi,
> >>
> >> Please review and comment on this draft:
> >>
> >> https://www.ietf.org/internet-drafts/draft-zzhang-mpls-icmp-bier-00.t
> >> xt
> >>
> >> Summary:
> >>
> >>   RFC3032 specifies that an LSR may generate ICMP messages if the
> >>   payload is IPv4 or IPv6.  Normally the ICMP messages are label
> >>   switched using the original label stack, and the egress LSR will
> then
> >>   forward the the messages to the source of the packet.
> >>
> >>   This document specifies an optional extension to generate ICMP
> >>   messages for BIER packets transported over LSPs.
> >>
> >>         BFIR --- BFR1  --- non-BFR1 --- non-BFR2 --- BFR2 --- BFER
> >>                   \...........tunnel................../
> >>                              ^
> >>                              |
> >>                              ttl-expiration on non-BFR1;
> >>                              generated ICMP message label switched to,
> >>                              and processed by BFR2
> >>
> >> Thanks!
> >> Jeffrey
> >>
> >> -----Original Message-----
> >> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> >> Sent: Thursday, June 11, 2015 3:20 PM
> >> To: Jeffrey (Zhaohui) Zhang; Jeffrey (Zhaohui) Zhang
> >> Subject: New Version Notification for
> >> draft-zzhang-mpls-icmp-bier-00.txt
> >>
> >>
> >> A new version of I-D, draft-zzhang-mpls-icmp-bier-00.txt
> >> has been successfully submitted by Zhaohui Zhang and posted to the
> >> IETF repository.
> >>
> >> Name:		draft-zzhang-mpls-icmp-bier
> >> Revision:	00
> >> Title:		MPLS ICMP for BIER Payload
> >> Document date:	2015-06-11
> >> Group:		Individual Submission
> >> Pages:		6
> >> URL:
> >>https://www.ietf.org/internet-drafts/draft-zzhang-mpls-icmp-bier-
> 00.txt
> >> Status:
> >>https://datatracker.ietf.org/doc/draft-zzhang-mpls-icmp-bier/
> >> Htmlized:
> >>https://tools.ietf.org/html/draft-zzhang-mpls-icmp-bier-00
> >>
> >>
> >> Abstract:
> >>   This document specifies an optional extension to generate ICMP
> >>   messages for BIER packets transported over LSPs.
> >>
> >>
> >>
> >>
> >>
> >> Please note that it may take a couple of minutes from the time of
> >>submission  until the htmlized version and diff are available at
> >>tools.ietf.org.
> >>
> >> The IETF Secretariat
> >>
> >> _______________________________________________
> >> BIER mailing list
> >> BIER@ietf.org
> >> https://www.ietf.org/mailman/listinfo/bier
> >
> >_______________________________________________
> >BIER mailing list
> >BIER@ietf.org
> >https://www.ietf.org/mailman/listinfo/bier


From nobody Wed Jun 24 08:56:50 2015
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Subject: [Bier] Agenda Items - IETF 93, Prague
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--089e01227ee0cc15ce0519458d1c
Content-Type: text/plain; charset=UTF-8

Please submit agenda items w/ title/doc and requested time.

Thanks!,
Greg

--089e01227ee0cc15ce0519458d1c
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<div dir="ltr">Please submit agenda items w/ title/doc and requested time.<div><br></div><div>Thanks!,</div><div>Greg</div></div>

--089e01227ee0cc15ce0519458d1c--


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Subject: Re: [Bier] Agenda Items - IETF 93, Prague
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From: Xuxiaohu <xuxiaohu@huawei.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Agenda Items - IETF 93, Prague
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--_000_1FEE3F8F5CCDE64C9A8E8F4AD27C19EE0833C8D5NKGEML512MBSchi_--


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Greg,

I would like 15 minutes to give an update on:

draft-ietf-bier-architecture
draft-ietf-bier-mpls-encapsulation

Thx,

Ice.

> On 24 Jun 2015, at 17:56, Greg Shepherd <gjshep@gmail.com> wrote:
> 
> Please submit agenda items w/ title/doc and requested time.
> 
> Thanks!,
> Greg
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier


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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Bit Indexed Explicit Replication Working Group of the IETF.

        Title           : Multicast using Bit Index Explicit Replication
        Authors         : IJsbrand Wijnands
                          Eric C. Rosen
                          Andrew Dolganow
                          Tony Przygienda
                          Sam K Aldrin
	Filename        : draft-ietf-bier-architecture-01.txt
	Pages           : 35
	Date            : 2015-06-25

Abstract:
   This document specifies a new architecture for the forwarding of
   multicast data packets.  It provides optimal forwarding of multicast
   packets through a "multicast domain".  However, it does not require a
   protocol for explicitly building multicast distribution trees, nor
   does it require intermediate nodes to maintain any per-flow state.
   This architecture is known as "Bit Index Explicit Replication"
   (BIER).  When a multicast data packet enters the domain, the ingress
   router determines the set of egress routers to which the packet needs
   to be sent.  The ingress router then encapsulates the packet in a
   BIER header.  The BIER header contains a bitstring in which each bit
   represents exactly one egress router in the domain; to forward the
   packet to a given set of egress routers, the bits corresponding to
   those routers are set in the BIER header.  Elimination of the per-
   flow state and the explicit tree-building protocols results in a
   considerable simplification.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-architecture/

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

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


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

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


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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Agenda Items - IETF 93, Prague
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Date: Sat, 27 Jun 2015 18:41:12 +0000
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Subject: Re: [Bier] Agenda Items - IETF 93, Prague
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HI Greg,

Can you please help us get a 10 minutes slot for draft-kumarzheng-bier-ping=
. Greg Mirsky will be the presenter.

Thanks,
Nagendra

From: Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Wednesday, June 24, 2015 at 11:56 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] Agenda Items - IETF 93, Prague

Please submit agenda items w/ title/doc and requested time.

Thanks!,
Greg

--_000_D1B466334CD80naikumarciscocom_
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ly: Calibri, sans-serif;">
<div>HI Greg,</div>
<div><br>
</div>
<div>Can you please help us get a 10 minutes slot for&nbsp;draft-kumarzheng=
-bier-ping. Greg Mirsky will be the presenter.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Nagendra</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
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 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>Greg Shepherd &lt;<a href=3D"=
mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Wednesday, June 24, 2015 at 1=
1:56 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] Agenda Items - IETF=
 93, Prague<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">Please submit agenda items w/ title/doc and requested time=
.
<div><br>
</div>
<div>Thanks!,</div>
<div>Greg</div>
</div>
</div>
</div>
</span>
</body>
</html>

--_000_D1B466334CD80naikumarciscocom_--


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