Re: New Version Notification for draft-bonica-6man-comp-rtg-hdr-11.txt

Gyan Mishra <hayabusagsm@gmail.com> Mon, 17 February 2020 15:32 UTC

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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Mon, 17 Feb 2020 10:32:25 -0500
Message-ID: <CABNhwV1x=Gjt=38rnmKpsLbaSOX_zijv4kis4-sGoGD0u92VKA@mail.gmail.com>
Subject: Re: New Version Notification for draft-bonica-6man-comp-rtg-hdr-11.txt
To: Chris Bowers <chrisbowers.ietf@gmail.com>
Cc: 6man WG <ipv6@ietf.org>, Julian Lucek <jlucek=40juniper.net@dmarc.ietf.org>, Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>
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+1 I agree it makes sense for the WG to adopt the draft.

It provides a solid solution to issues with MSD(maximum sid depth) that
exist and plagues both SR-MPLS and SRv6.  One of major issues with SR-MPLS
is that as long as cSPF constraint based IGP path is used you don’t run
into MSD issues.  However, if SR-TE is employed with ERO-explicit route
object you run into trouble with MSD and the source routed path results in
an PCALC error - and the path cannot be instantiated.  With SRv6 the
problem with MSD is exacerbated since SRv6 can natively source route a TE
ERO path using SRH routing header type 4. So all paths instantiated can
result in SID depth issues.  For both existing SR options you almost have
to use a centralized PCE controller based architecture - as with
distributed and hybrid scenarios can be problematic with static ERO
instantiation.  Static ERO is the main goal of Sping Segment Routing and
not a dynamic cSPF ERO.

This draft also provides an alternative source routing option to use case
for RH0 which has security vulnerabilities.

Verizon as Tier 1 SP is very interested in testing CRH as it addresses
major pitfalls with Segment Routing.

Gyan

On Mon, Feb 17, 2020 at 9:14 AM Chris Bowers <chrisbowers.ietf@gmail.com>
wrote:

> +1 I think it makes sense for the WG to adopt this draft.
>
> Chris
>
> On Mon, Feb 17, 2020 at 5:58 AM Julian Lucek <jlucek=
> 40juniper.net@dmarc.ietf.org> wrote:
>
>> +1
>>
>>
>>
>> 6man should adopt this draft because:
>>
>>
>>
>> (i) It has been around for a year
>>
>> (ii) It has been implemented on experimental code versions: LINUX Server
>> (software-based forwarding) and MX series router (ASIC-based forwarding)
>>
>> (iii) It has had some experimental deployments, as well as Liquid, in
>> some other, as yet unnamed, networks
>>
>>
>>
>> Julian
>>
>>
>>
>> *From: *ipv6 <ipv6-bounces@ietf.org> on behalf of Andrew Alston <
>> Andrew.Alston@liquidtelecom.com>
>> *Date: *Monday, 17 February 2020 at 11:45
>> *To: *Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>rg>, 6man WG <
>> ipv6@ietf.org>
>> *Subject: *RE: New Version Notification for
>> draft-bonica-6man-comp-rtg-hdr-11.txt
>>
>>
>>
>> As a co-author of this document, I fully support this change.  We have
>> stated many times that we have a need for this technology – and in fact
>> have done significant work internally to use this technology – inclusive of
>> tests to steer traffic between asn’s and other things.
>>
>>
>>
>> Thanks Ron for the work on this.
>>
>>
>>
>> Andrew
>>
>>
>>
>>
>>
>> *From:* ipv6 <ipv6-bounces@ietf.org> *On Behalf Of *Ron Bonica
>> *Sent:* Monday, 17 February 2020 03:56
>> *To:* 6man WG <ipv6@ietf.org>
>> *Subject:* FW: New Version Notification for
>> draft-bonica-6man-comp-rtg-hdr-11.txt
>>
>>
>>
>> Folks,
>>
>> Over the last several weeks, customers who have no interest in Segment
>> Routing have expressed interest in the CRH. So, we have updated the CRH
>> draft, removing all references to Segment Routing and letting it stand
>> alone as an IPv6 Routing header.
>>
>> While Segment Routing may one day be a user of the CRH, it will not be
>> the only user.
>>
>> Please review this document as a stand-alone piece of work.
>>
>> Ron
>>
>>
>>
>> Juniper Business Use Only
>>
>> -----Original Message-----
>> From: internet-drafts@ietf.org <internet-drafts@ietf.org>
>> Sent: Sunday, February 16, 2020 7:46 PM
>> To: Ron Bonica <rbonica@juniper.net>et>; Ning So <ning.so@ril.com>om>; Andrew
>> Alston <andrew.alston@liquidtelecom.com>om>; Ning So <Ning.So@ril.com>om>;
>> Tomonobu Niwa <to-niwa@kddi.com>om>; Andrew Alston <
>> Andrew.Alston@liquidtelecom.com>gt;; Yuji Kamite <y.kamite@ntt.com>
>> Subject: New Version Notification for
>> draft-bonica-6man-comp-rtg-hdr-11.txt
>>
>>
>> A new version of I-D, draft-bonica-6man-comp-rtg-hdr-11.txt
>> has been successfully submitted by Ron Bonica and posted to the IETF
>> repository.
>>
>> Name: draft-bonica-6man-comp-rtg-hdr
>> Revision: 11
>> Title: The IPv6 Compressed Routing Header (CRH)
>> Document date: 2020-02-16
>> Group: Individual Submission
>> Pages: 16
>> URL https://tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr-11
>> <https://urldefense.com/v3/__https:/tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr-11__;!!NEt6yMaO-gk!XkLwpNbt_lW0zdMC3zBSxB88VXWxHgJ8TnckKpe9_FSeDWas7BKUD1BH05HFYzWY$>
>> Status: https://datatracker.ietf.org/doc/draft-bonica-6man-comp-rtg-hdr/
>> <https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-bonica-6man-comp-rtg-hdr/__;!!NEt6yMaO-gk!XkLwpNbt_lW0zdMC3zBSxB88VXWxHgJ8TnckKpe9_FSeDWas7BKUD1BH0w3nJEqm$>
>> Htmlized: https://tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr-11
>> <https://urldefense.com/v3/__https:/tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr-11__;!!NEt6yMaO-gk!XkLwpNbt_lW0zdMC3zBSxB88VXWxHgJ8TnckKpe9_FSeDWas7BKUD1BH05HFYzWY$>
>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-bonica-6man-comp-rtg-hdr
>> <https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/draft-bonica-6man-comp-rtg-hdr__;!!NEt6yMaO-gk!XkLwpNbt_lW0zdMC3zBSxB88VXWxHgJ8TnckKpe9_FSeDWas7BKUD1BH0_p5lJrd$>
>> Diff:
>> Abstract:
>> This document defines two new Routing header types. Collectively,
>> they are called the Compressed Routing Headers (CRH). Individually,
>> they are called CRH-16 and CRH-32.
>>
>>
>>
>>
>> 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
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-- 

Gyan  Mishra

Network Engineering & Technology

Verizon

Silver Spring, MD 20904

Phone: 301 502-1347

Email: gyan.s.mishra@verizon.com