Re: [Bier] WGLC: draft-ietf-bier-php
Tony Przygienda <tonysietf@gmail.com> Mon, 06 March 2023 14:01 UTC
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From: Tony Przygienda <tonysietf@gmail.com>
Date: Mon, 06 Mar 2023 15:00:43 +0100
Message-ID: <CA+wi2hPM2hNp8Gjjy_MX9nC-0r=zWnSSkwndoji6PhqaPqkxPg@mail.gmail.com>
To: "Jeffrey (Zhaohui) Zhang" <zzhang=40juniper.net@dmarc.ietf.org>
Cc: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>, "Mankamana Mishra (mankamis)" <mankamis=40cisco.com@dmarc.ietf.org>, Loa Andersson <loa@pi.nu>
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Subject: Re: [Bier] WGLC: draft-ietf-bier-php
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I don't see shepherd writedown on the doc to be able to progress it. Xioa, pls provide writeup. If nothing happens next week, looking for a volunteer ... thanks -- tony On Tue, Dec 7, 2021 at 4:03 PM Jeffrey (Zhaohui) Zhang <zzhang= 40juniper.net@dmarc.ietf.org> wrote: > Hi Greg, > > > > I posted -07 revision: > https://datatracker.ietf.org/doc/draft-ietf-bier-php/ > > > > Thanks! > > Jeffrey > > > > *From:* Greg Shepherd <gjshep@gmail.com> > *Sent:* Monday, November 22, 2021 11:32 AM > *To:* Jeffrey (Zhaohui) Zhang <zzhang@juniper.net> > *Cc:* Loa Andersson <loa@pi.nu>; Mankamana Mishra (mankamis) <mankamis= > 40cisco.com@dmarc.ietf.org>; bier@ietf.org > *Subject:* Re: [Bier] WGLC: draft-ietf-bier-php > > > > *[External Email. Be cautious of content]* > > > > We have technically 'passed' last call, by time.. We were hoping to hear > from Loa on the last rev. > > If the authors would like to see this work progress, please update the > draft. > > > > We will also need a doc Shepherd to step up. > > > > Thanks, > > - Shep > > (Chairs) > > > > On Thu, Sep 17, 2020 at 3:40 AM Jeffrey (Zhaohui) Zhang < > zzhang@juniper.net> wrote: > > Hi Loa, > > Please see > https://mailarchive.ietf.org/arch/msg/bier/xi6hpAdFLUBjYBVo9I4nr_418x4/ > <https://urldefense.com/v3/__https:/mailarchive.ietf.org/arch/msg/bier/xi6hpAdFLUBjYBVo9I4nr_418x4/__;!!NEt6yMaO-gk!REEzE69GJkIx6pOVyYS_H6JbMHQiSFLuzIrN5_BGnm7bBgMCeYetypQBCbxnF45Y$> > and > https://mailarchive.ietf.org/arch/msg/bier/nbPn1uq8XM_RsQq0vaUBQZ5JYjM/ > <https://urldefense.com/v3/__https:/mailarchive.ietf.org/arch/msg/bier/nbPn1uq8XM_RsQq0vaUBQZ5JYjM/__;!!NEt6yMaO-gk!REEzE69GJkIx6pOVyYS_H6JbMHQiSFLuzIrN5_BGnm7bBgMCeYetypQBCQI5Y9ZB$> > . > > The -06 revision is here: > https://tools.ietf.org/html/draft-ietf-bier-php-06 > <https://urldefense.com/v3/__https:/tools.ietf.org/html/draft-ietf-bier-php-06__;!!NEt6yMaO-gk!REEzE69GJkIx6pOVyYS_H6JbMHQiSFLuzIrN5_BGnm7bBgMCeYetypQBCVxT6wNS$> > . > > Thanks! > Jeffrey > > > Juniper Business Use Only > > -----Original Message----- > From: BIER <bier-bounces@ietf.org> On Behalf Of Loa Andersson > Sent: Thursday, September 17, 2020 3:20 AM > To: Gyan Mishra <hayabusagsm@gmail.com>; Mankamana Mishra (mankamis) > <mankamis=40cisco.com@dmarc.ietf.org> > Cc: IJsbrand Wijnands (iwijnand) <iwijnand=40cisco.com@dmarc.ietf.org>; > Greg Shepherd <gjshep@gmail.com>; bier@ietf.org > Subject: Re: [Bier] WGLC: draft-ietf-bier-php > > [External Email. Be cautious of content] > > > Working Group, authors, > > I don't think I saw a response on this. > > /Loa > > > On 22/08/2020 13:57, Loa Andersson wrote: > > Working Group, > > > > I've had time to read the draft a bit more in detail. > > > > I'm convinced that this will work, and support progressing the draft. > > > > I still think there are some minor description details that could be > > improved. > > > > The draft says: > > > > One way to solve this problem is to use Penultimate Hop Popping (PHP) > > so that the upstream BFR can pop the BIER header and send the payload > > "natively" (note that the upstream BFR can be connected directly or > > indirectly via any type of tunnel to the PE). This is similar to > > Multi-Protocol Label Switching (MPLS) PHP though it is the BIER > > header that is popped. > > > > This indicate that this is a "per node" decision, while in MPLS it is > > a per LSP decision. > > > > I would think that it is possible for one node to be the penultimate > > node for some traffic but not for other traffic, even though the > > traffic is sent to the same node, which can be both ultimate node, > > pen-ultimate node or transit node. > > > > > > +-------+ +-------+ +-------+ > > | | | | | | > > -a,b-+ A +-----a',b-----+ B +----a'----+ CPE1 | > > | | | | | | > > +-------+ +---+---+ +-------+ > > | > > b' > > | > > +---+---+ +-------+ > > | | | | > > + C +----b'----+ CPE2 | > > | | | | > > +---+---+ +-------+ > > > > > > Two streams comes in to A from the left (a and b). > > > > A is the penultimate node for traffic to to CPE1 (a) so the BIER > > header is popped. > > > > A is not the penultimate node for traffic to to CPE2 (b) so the BIER > > header is popped. > > > > Both a' and b is sent to B. > > > > B forward a' natively to CPE1. > > > > B is the penultimate node for traffic to to CPE2 (b) so the BIER > > header is popped. > > > > b' is forwarded to C and onto CPE2 > > > > Works just fine. > > > > Question: If the PHP is a "per node decision" how is A stopped from > > doing PHP for b? > > > > /Loa > > > > > > > > On 22/08/2020 05:20, Gyan Mishra wrote: > >> > >> I support advancing this critical draft forward. I agree that the > >> PHP feature traditionally used with MPLS and has been adopted by SR > >> and now by BIER for similar reasons of being able to pop the BIER > >> header similar to what is done with SR PHP concept and now extensible > >> with BIER for Non-BRF capable PE's. > >> > >> BIER IPv6 is still being developed, however I think maybe BIERin6 > >> could take advantage of PHP by popping the encapsulated L2 1/2 BIER > >> shim for "Non-BFR" capable PE. I think for BIERv6 as the BIER header > >> is encoded in DOH it may be difficult to support PHP. > >> > >> Thanks > >> > >> Gyan > >> > >> On Wed, Aug 19, 2020 at 2:01 PM Mankamana Mishra (mankamis) > >> <mankamis=40cisco.com@dmarc.ietf.org > >> <mailto:40cisco.com@dmarc.ietf.org>> wrote: > >> > >> Support moving this document forward. ____ > >> > >> __ __ > >> > >> *From: *BIER <bier-bounces@ietf.org <mailto:bier-bounces@ietf.org>> > >> on behalf of "IJsbrand Wijnands (iwijnand)" > >> <iwijnand=40cisco.com@dmarc.ietf.org > >> <mailto:40cisco.com@dmarc.ietf.org>> > >> *Date: *Monday, August 17, 2020 at 11:56 AM > >> *To: *Greg Shepherd <gjshep@gmail.com <mailto:gjshep@gmail.com>> > >> *Cc: *"bier@ietf.org <mailto:bier@ietf.org>" <bier@ietf.org > >> <mailto:bier@ietf.org>> > >> *Subject: *Re: [Bier] WGLC: draft-ietf-bier-php____ > >> > >> __ __ > >> > >> In support moving this draft forward, ____ > >> > >> __ __ > >> > >> Thx,____ > >> > >> __ __ > >> > >> Ice.____ > >> > >> Sent from my iPhone____ > >> > >> > >> > >> ____ > >> > >> On 13 Aug 2020, at 05:31, Greg Shepherd <gjshep@gmail.com > >> <mailto:gjshep@gmail.com>> wrote:____ > >> > >> > >> Please read and respond to this thread. We had a WGLC for this > >> draft previously, but had no response. Let’s do better. ____ > >> > >> __ __ > >> > >> > >> https://urldefense.com/v3/__https://datatracker.ietf.org/doc/draft-ie > <https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-ie> > >> tf-bier-php/______;!!NEt6yMaO-gk!Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1 > >> mBAhG2yLZjknTH9OQEibSJ4RCvEs$ > >> > >> __ __ > >> > >> Start of short LC timer. Respond by Aug 19..____ > >> > >> __ __ > >> > >> - Shep____ > >> > >> (Chairs)____ > >> > >> _______________________________________________ > >> BIER mailing list > >> BIER@ietf.org <mailto:BIER@ietf.org> > >> > >> https://urldefense.com/v3/__https://www.ietf.org/mailman/listinfo/bie > <https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/bie> > >> r______;!!NEt6yMaO-gk!Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1mBAhG2yLZjk > >> nTH9OQEibSDeBjgsU$ > >> > >> _______________________________________________ > >> BIER mailing list > >> BIER@ietf.org <mailto:BIER@ietf.org> > >> > >> https://urldefense.com/v3/__https://www.ietf.org/mailman/listinfo/bie > <https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/bie> > >> r__;!!NEt6yMaO-gk!Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1mBAhG2yLZjknTH9 > >> OQEibSLzVgreZ$ > >> > >> > >> > >> -- > >> > >> <https://urldefense.com/v3/__http://www.verizon.com/__;!!NEt6yMaO-gk > <https://urldefense.com/v3/__http:/www.verizon.com/__;!!NEt6yMaO-gk>! > >> Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1mBAhG2yLZjknTH9OQEibSH6MkdrA$ > > >> > >> *Gyan Mishra* > >> > >> /Network Solutions A//rchitect / > >> > >> /M 301 502-1347 > >> 13101 Columbia Pike > >> /Silver Spring, MD > >> > >> > >> > >> _______________________________________________ > >> BIER mailing list > >> BIER@ietf.org > >> https://urldefense.com/v3/__https://www.ietf.org/mailman/listinfo/bie > <https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/bie> > >> r__;!!NEt6yMaO-gk!Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1mBAhG2yLZjknTH9 > >> OQEibSLzVgreZ$ > >> > > > > -- > > Loa Andersson email: loa@pi.nu > Senior MPLS Expert loa.pi.nu@gmail.com > Bronze Dragon Consulting phone: +46 739 81 21 64 > > _______________________________________________ > BIER mailing list > BIER@ietf.org > > https://urldefense.com/v3/__https://www.ietf.org/mailman/listinfo/bier__;!!NEt6yMaO-gk!Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1mBAhG2yLZjknTH9OQEibSLzVgreZ$ > <https://urldefense.com/v3/__https:/www.ietf.org/mailman/listinfo/bier__;!!NEt6yMaO-gk!Xc7KbkW_lel3I36HaEzsUA2xMeb5gSroB5W1mBAhG2yLZjknTH9OQEibSLzVgreZ$> > > > Juniper Business Use Only > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier >
- Re: [Bier] WGLC: draft-ietf-bier-php Jeffrey (Zhaohui) Zhang
- Re: [Bier] WGLC: draft-ietf-bier-php Suneesh Babu
- [Bier] WGLC: draft-ietf-bier-php Greg Shepherd
- Re: [Bier] WGLC: draft-ietf-bier-php IJsbrand Wijnands (iwijnand)
- Re: [Bier] WGLC: draft-ietf-bier-php Bidgoli, Hooman (Nokia - CA/Ottawa)
- Re: [Bier] WGLC: draft-ietf-bier-php zhang.zheng
- Re: [Bier] WGLC: draft-ietf-bier-php Xiejingrong (Jingrong)
- Re: [Bier] WGLC: draft-ietf-bier-php Greg Mirsky
- Re: [Bier] WGLC: draft-ietf-bier-php Gengxuesong (Geng Xuesong)
- Re: [Bier] WGLC: draft-ietf-bier-php Loa Andersson
- Re: [Bier] WGLC: draft-ietf-bier-php Dhruv Dhody
- Re: [Bier] WGLC: draft-ietf-bier-php Jeffrey (Zhaohui) Zhang
- Re: [Bier] WGLC: draft-ietf-bier-php Mankamana Mishra (mankamis)
- Re: [Bier] WGLC: draft-ietf-bier-php Gyan Mishra
- Re: [Bier] WGLC: draft-ietf-bier-php Loa Andersson
- Re: [Bier] WGLC: draft-ietf-bier-php Xiejingrong (Jingrong)
- Re: [Bier] WGLC: draft-ietf-bier-php Jeffrey (Zhaohui) Zhang
- Re: [Bier] WGLC: draft-ietf-bier-php Jeffrey (Zhaohui) Zhang
- Re: [Bier] WGLC: draft-ietf-bier-php Greg Mirsky
- Re: [Bier] WGLC: draft-ietf-bier-php Greg Shepherd
- Re: [Bier] WGLC: draft-ietf-bier-php Nagendra Kumar Nainar (naikumar)
- Re: [Bier] WGLC: draft-ietf-bier-php Gyan Mishra
- Re: [Bier] WGLC: draft-ietf-bier-php Greg Shepherd
- Re: [Bier] WGLC: draft-ietf-bier-php Loa Andersson
- Re: [Bier] WGLC: draft-ietf-bier-php Jeffrey (Zhaohui) Zhang
- Re: [Bier] WGLC: draft-ietf-bier-php Greg Shepherd
- Re: [Bier] WGLC: draft-ietf-bier-php Jeffrey (Zhaohui) Zhang
- Re: [Bier] WGLC: draft-ietf-bier-php Tony Przygienda
- Re: [Bier] WGLC: draft-ietf-bier-php Tony Przygienda