A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Protocol Topology Support for IS-IS
Author(s) : K. Noguchi, T. Takada
Filename : draft-noguchi-isis-protocol-topology-00.txt
Pages : 6
Date : 2003-1-28
RFC 1195 [1] documents a dual routing protocol that can be used to
route both CLNP and IPv4, that is Integrated IS-IS. [2] adds
functionality to Integrated IS-IS so that it supports IPv6.
RFC 1195 [1] places topological restrictions on networks that are
routed using Integrated IS-IS, specifically, that every router in a
level-1 area must be capable of all network layer protocols that are
present in that area, and every router in a level-2 area must be
capable of all network layer protocols that are present in the whole
IS-IS routing domain.
The mechanism described in this document enables a single IS-IS
routing domain to support different network layer protocol topologies
by maintaining separate SPF trees for each network layer protocol.
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