RFC 3563 (rfc3563) - Page 2 of 8

Cooperative Agreement Between the ISOC/IETF and ISO/IEC Joint Technical Committee 1/Sub Committee 6 (JTC1/SC6) on IS-IS Routing Protocol Development

RFC 3563             IETF - JTC1 Agreement on IS-IS            July 2003


   ISO/IEC/JTC1/SC6 is the JTC1 sub-committee which has responsibility
   for maintenance of the IS-IS standard (ISO/IEC 10589).

   The IS-IS Working Group of the IETF is chartered to develop
   extensions to the IS-IS protocol to be used within the scope of the
   Internet.

   This addendum documents the agreed process for the future development
   of IS-IS by both organizations.

2. Definitions

2.1 Core IS-IS Mechanisms

   Core IS-IS Mechanisms are subsystems with associated algorithms, data
   structures, and PDU formats as specified in (ISO/IEC 10589),
   constituting the core of the IS-IS protocol and including the
   following elements:

   a) Framework of PDU formats, including TLVs defined in [10589]

   b) Encapsulation of PDUs

   c) Adjacency state machine and formation logic

   d) DIS election algorithm

   e) Initial LSP synchronization via CSNP exchange

   f) Asynchronous LSP flooding (including DIS flooding behavior)

   g) LSP database maintenance including LSP origination, aging, and
      purging

   h) Topology abstraction defined in [10589]

2.2 Internet-specific IS-IS Extensions:

   Internet-specific IS-IS Extensions are extensions to the IS-IS
   protocol that are within the work scope of the IETF including any
   routing or packet forwarding technology that the IETF decides to work
   on in the future (such as IPv4 or IPv6 unicast and multicast routing,
   MPLS, MPLS Traffic Engineering, or Generalized MPLS), and:

   a) do not modify the Core IS-IS Mechanisms and do not change
      operation of non-IP or affect compatibility with non-IP and dual
      implementations of IS-IS, or




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