A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : IS-IS Multi-instance Multi-topology
Author(s) : S. Previdi, et al.
Filename : draft-previdi-isis-mi-mt-01.txt
Pages : 8
Date : 2006-6-16
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 deployment of multiple address-families
as well as multiple instances of the same address-family and it is
an alternative to Multi-Topology IS-IS. 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
topologies in parallel, using the same set of links when required
and still have the capability of computing topology 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
topology to which they belong.
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