A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Multi-Level IS-IS Without Protocol Extensions
Author(s) : J. Sadler
Filename : draft-sadler-isis-ml-bcp-00.txt
Pages : 19
Date : 2003-2-25
Work has started in the ITU, the IETF IP over Optical Working Group,
and in the OIF to specify the requirements for ASON NNI routing.
One of the requirements identified is support for multi-level
hierarchies.
IS-IS is one of the candidate protocols to provide this
functionality. Therefore, methods for multi-level IS-IS routing
need to be developed.
This draft documents one that provides multi-level routing through
the 'stacking' of Level 2 IS-IS instances. The method is possible
using existing extensions to IS-IS. It also provides insight into
some of the resulting operational issues.
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