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IS-IS Multi-instance

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Stefano Previdi , Les Ginsberg , Abhay Roy , Mike Shand , David Ward
Last updated 2007-05-21
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This Internet-Draft is no longer active.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:


This draft describes a mechanism that allows a single router to share one or more links among multiple IS-IS routing protocol instances. Multiple instances allow the isolation of resources associated with each instance. Routers will form instance specific adjacencies, exchange instance specific routing updates and compute paths utilizing instance specific LSDB information. Each PDU will contain a new TLV identifying the instance to which the PDU belongs. This allows a network operator to deploy multiple IS-IS instances in parallel, using the same set of links when required and still have the capability of computing instance specific paths. This draft does not address the forwarding paradigm that needs to be used in order to ensure data PDUs are forwarded according to the paths computed by a specific instance.


Stefano Previdi
Les Ginsberg
Abhay Roy
Mike Shand
David Ward

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