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Re: [Isis-wg] New Layer2 extensions to ISIS - thorough review will berequired

Peter Ashwood-Smith <Peter.AshwoodSmith@huawei.com> Mon, 26 April 2010 14:13 UTC

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Date: Mon, 26 Apr 2010 10:09:35 -0400
From: Peter Ashwood-Smith <Peter.AshwoodSmith@huawei.com>
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To: stbryant@cisco.com, "'Fedyk, Donald (Don)'" <donald.fedyk@alcatel-lucent.com>
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Cc: 'Adrian Farrel' <Adrian.Farrel@huawei.com>, 'Christian Hopps' <chopps@rawdofmt.org>, 'isis-wg' <isis-wg@ietf.org>, 'Ralph Droms' <rdroms@cisco.com>
Subject: Re: [Isis-wg] New Layer2 extensions to ISIS - thorough review will berequired
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Stewart, 

802.1aq adds the following basic TLV's.

1 - some hello extensions to exchange multi-path behavior.
2 - some nodal extensions that advertise multi-path behavior.
3 - an adjacency extension that adds a link weight.
4 - service level information that indicates attachment points/membership.

These operate in the context of a new NLPID and do not change any other
NLPID behaviors of IS-IS.

Peter

-----
Are the changes required by 802.1aq limited to simply adding (sub)TLVs 
to carry additional address families with no other changes whatsoever 
required to the protocol?

- Stewart

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