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[PWE3] Re: CEM vs CEP in draft-ietf-pwe3-iana-allocation-01.txt

Sasha,

CEP is, as we know, going to be the standards track specification. However, it is still a bit of a moving target, and I can't speak for other companies, but Vivace intends to hold off on completing our implementation until we're in the final stages of publishing the RFC, since it's being implemented in silicon.

Meanwhile, there are several existing implementations of CEM, including Vivace's. Once CEP is ready to replace CEM in the field, we need a new PW type for it since the bits on the wire will be different - otherwise it will be impossible to gracefully upgrade. It's not like we're running out of PW types.

Finally, once CEP has been published as the standards track document, we intend to publish CEM as an informational/historical RFC to document the original implementations for posterity.

Thanks for pointing out the broken reference. I'll fix it.

Cheers,
Andy

-------

At 6/17/2003 04:42 PM +0200, Sasha Vainshtein wrote:
Mark and Luca,
Can you (or Andy) explain why it is necessary to maintain
separate PW types for CEP and CEM?
And, BTW, CEM description includes a reference [8] which is
simply lacking in the document. If a reference to draft-malis has
been intended, this draft seem to be expired (no such at the IETF site)...

With best regards,
                                   Sasha Vainshtein
email:     sasha@axerra.com <mailto:sasha@axerra.com>
tel:       +972-3-7659993 (office)
           +972-8-9254948 (res.)
           +972-58-674833 (cell.)



> -----Original Message-----
> From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org]
> Sent: Tuesday, June 17, 2003 1:58 PM
> Cc: pwe3@ietf.org
> Subject: I-D ACTION:draft-ietf-pwe3-iana-allocation-01.txt
>
>
> A New Internet-Draft is available from the on-line
> Internet-Drafts directories.
> This draft is a work item of the Pseudo Wire Emulation Edge
> to Edge Working Group of the IETF.
>
>       Title           : IANA Allocations for pseudo Wire Edge to Edge
>                           Emulation (PWE3)
>       Author(s)       : L. Martini, W. Townsley
>       Filename        : draft-ietf-pwe3-iana-allocation-01.txt
>       Pages           : 5
>       Date            : 2003-6-16
>
> The Control and maintenance protocol for providing various Layer 1
> and Layer 2 services over a Packet Switched Network has been
> described in [2]. This document pre-allocates the fixed Pseudo-wire
> identifier , and other fixed protocol values that are to be assigned
> by IANA using the 'IETF Consensus' policy defined in RFC2434
>
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> ation-01.txt
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