Re: [Pppext] TRILL, IS-IS, and System ID

Jari Arkko <jari.arkko@piuha.net> Thu, 02 June 2011 17:01 UTC

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Date: Thu, 02 Jun 2011 20:01:17 +0300
From: Jari Arkko <jari.arkko@piuha.net>
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To: James Carlson <carlsonj@workingcode.com>
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Cc: PPP Extensions <pppext@ietf.org>, "rbridge@postel.org" <rbridge@postel.org>, William Allen Simpson <william.allen.simpson@gmail.com>, "stbryant@cisco.com" <stbryant@cisco.com>
Subject: Re: [Pppext] TRILL, IS-IS, and System ID
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James, all,

>>>     3. An implementation that has only PPP links might have no
>>>        Organizationally Unique Identifier (OUI) that can form an IS-IS
>>>        System ID.  Resolving that issue is outside the scope of this
>>>        document, however it is strongly RECOMMENDED that all TRILL
>>>        implementations have at least one zero-configuration mechanism to
>>>        obtain a valid System ID.  Refer to ISO/IEC 10589 regarding System
>>>        ID uniqueness requirements.

I like this text. And I agree with everything else you said in your 
e-mail James.

To the working group: lets not get too hung over on this reference. 
Here's the positive takeaway:

1. We have a PPPEXT-TRILL doc moving forward, as simple as possible.

2. There seems to be pretty wide consensus that we need a good 
zero-configuration mechanism for ISIS System IDs.

3. There is a clear place for discussion about such mechanisms to happen 
in: ISIS WG

4. For sure, there may be disagreements about what the right proposal 
is, but that's usual (and far better than silence and no interest).

Lets move forward with this. Bill, can you work with Stewart and the 
ISIS guys on the solutions (with the understanding that we'll probably 
need some amount of back-and-forth before we know what the right answer 
is)? I would appreciate having you (and others as well, of course) 
working on it.

Jari