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Shortest Path Bridging and Backbone Bridging with IS-IS

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Peter J. Ashwood-Smith , Nigel Bragg , Don Fedyk , David Allan
Last updated 2009-07-06
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Several techniques are being developed which use IS-IS to deliver link state based layer 2 forwarding. The superset of the extensions proposed to IS-IS to allow these capabilities is found in [IS-IS- L2]. One technique for layer 2 forwarding is being specified in the IEEE 802.1aq task group, under the over-arching title of "Shortest Path Bridging" (SPB). SPB however only requires a subset of the proposed IS-IS extensions in [IS-IS-L2]. For clarity this informational draft documents only the subset required by SPB. In addition a high level introduction, describing how these TLVs are used is provided for those who do not follow the IEEE work in detail. A reference is also given to the normative IEEE 802.1aq document The ordering of material in this document follows that of Clause 28 of IEEE 802.1aq, to aid cross-referencing.


Peter J. Ashwood-Smith
Nigel Bragg
Don Fedyk
David Allan

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)