Re: [mpls] Retiring ACH TLVs
"George Swallow (swallow)" <swallow@cisco.com> Tue, 14 May 2013 15:30 UTC
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From: "George Swallow (swallow)" <swallow@cisco.com>
To: Sam Aldrin <aldrin.ietf@gmail.com>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>
Thread-Topic: [mpls] Retiring ACH TLVs
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Date: Tue, 14 May 2013 15:30:26 +0000
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Cc: "<mpls@ietf.org>" <mpls@ietf.org>
Subject: Re: [mpls] Retiring ACH TLVs
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Absolutely! On 5/13/13 6:30 AM, "Sam Aldrin" <aldrin.ietf@gmail.com> wrote: >Fully support. > >-sam > >Sent from my iPhone > >On May 7, 2013, at 1:08 PM, "Adrian Farrel" <adrian@olddog.co.uk> wrote: > >> Hi, >> >> ACH TLVs keep popping up and causing Stewart and me trouble. Mainly it >>is about explaining why no-one actually wants to use them (i.e., when >>each new ACH Type is defined and has a "No TLVs" written for it, we get >>asked "why not?"). >> >> It seems to us that ACH TLVs are an idea that has been rejected. >>Initially we thought they might be used (especially for identifiers), >>but there seems to be good opinion that handling generic TLVs would be a >>pain. >> >> Since I was heavily responsible for insisting that ACH TLVs were >>included in RFC 5586, it seems reasonable that I do the work to fix it. >> >> The I-D below retires ACH TLVs and handles the necessary registry >>changes. >> >> Note, of course, that structured data are still possible within >>individual ACHs if the protocol spec for an individual ACH decides to >>have them. >> >> We're directing this work to the MPLS working group because that is >>where 5586 was written. I have BCC'ed PWE3, L2VPN, and BFD for >>information. >> >> Thanks for any comments. >> >> As humble WG contributors we would be enthusiastic to see early WG >>adoption and last call :-) >> >> Thanks, >> Adrian >> >>> -----Original Message----- >>> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] >>> Sent: 07 May 2013 17:33 >>> To: Adrian Farrel; Stewart Bryant >>> Subject: New Version Notification for >>>draft-farbryantrel-mpls-retire-ach-tlv- >>> 00.txt >>> >>> >>> A new version of I-D, draft-farbryantrel-mpls-retire-ach-tlv-00.txt >>> has been successfully submitted by Adrian Farrel and posted to the >>> IETF repository. >>> >>> Filename: draft-farbryantrel-mpls-retire-ach-tlv >>> Revision: 00 >>> Title: Retiring TLVs from the Associated Channel Header of the >>>MPLS >>> Generic Associated Channel >>> Creation date: 2013-05-07 >>> Group: Individual Submission >>> Number of pages: 4 >>> URL: >>>http://www.ietf.org/internet-drafts/draft-farbryantrel-mpls-retire- >>> ach-tlv-00.txt >>> Status: >>>http://datatracker.ietf.org/doc/draft-farbryantrel-mpls-retire-ach-tlv >>> Htmlized: >>>http://tools.ietf.org/html/draft-farbryantrel-mpls-retire-ach-tlv-00 >>> >>> >>> Abstract: >>> The MPLS Generic Associated Channel (G-ACh) is a generalization of >>> the applicability of the Pseudowire (PW) Associated Channel Header >>> (ACH). RFC 5586 defines the concept of Type-Length-Variable (TLV) >>> constructs that can be carried in messages on the G-ACh by placing >>> them in the ACH. >>> >>> No Associated Channel Type yet defined uses a TLV. Furthermore, it >>> is believed that handling TLVs in hardware introduces significant >>> problems to the fast-path, and since G-ACh messages are intended to >>> be processed substantially in hardware, the use of TLVs in >>> undesirable. >>> >>> This document updates RFC 5586 by retiring ACH TLVs and removing the >>> associated registry. >>> >>> >>> >>> >>> The IETF Secretariat >> >> _______________________________________________ >> mpls mailing list >> mpls@ietf.org >> https://www.ietf.org/mailman/listinfo/mpls >_______________________________________________ >mpls mailing list >mpls@ietf.org >https://www.ietf.org/mailman/listinfo/mpls
- [mpls] Retiring ACH TLVs Adrian Farrel
- Re: [mpls] Retiring ACH TLVs Nitin Bahadur
- Re: [mpls] Retiring ACH TLVs Giles Heron
- Re: [mpls] Retiring ACH TLVs Carlos Pignataro (cpignata)
- Re: [mpls] Retiring ACH TLVs Dan Frost
- Re: [mpls] Retiring ACH TLVs Sam Aldrin
- Re: [mpls] Retiring ACH TLVs George Swallow (swallow)
- Re: [mpls] Retiring ACH TLVs Jeff Tantsura
- Re: [mpls] Retiring ACH TLVs David Allan I
- Re: [mpls] Retiring ACH TLVs Shahram Davari
- Re: [mpls] Retiring ACH TLVs Pablo Frank
- Re: [mpls] Retiring ACH TLVs Yaakov Stein
- Re: [mpls] Retiring ACH TLVs Lizhong Jin
- Re: [mpls] Retiring ACH TLVs Adrian Farrel
- Re: [mpls] Retiring ACH TLVs Adrian Farrel
- Re: [mpls] Retiring ACH TLVs Stewart Bryant
- Re: [mpls] Retiring ACH TLVs Lizhong Jin
- Re: [mpls] Retiring ACH TLVs Eric Gray