[Isis-wg] I-D Action:draft-ietf-isis-rfc2966bis-00.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IS-IS for IP Internets Working Group of the IETF.

	Title           : Domain-wide Prefix Distribution with Two-Level IS-IS
	Author(s)       : T. Li, et al.
	Filename        : draft-ietf-isis-rfc2966bis-00.txt
	Pages           : 15
	Date            : 2008-02-07

This document describes extensions to the Intermediate System to
Intermediate System (IS-IS) protocol to support optimal routing
within a two-level domain.  The IS-IS protocol is specified in ISO
10589, with extensions for supporting IPv4 (Internet Protocol)
specified in RFC 1195.
This document extends the semantics presented in RFC 1195 so that a
routing domain running with both level 1 and level 2 Intermediate
Systems (IS) [routers] can distribute IP prefixes between level 1 and
level 2 and vice versa.  This distribution requires certain
restrictions to insure that persistent forwarding loops do not form.
The goal of this domain-wide prefix distribution is to increase the
granularity of the routing information within the domain.

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