RFC 3787 (rfc3787) - Page 1 of 11

Recommendations for Interoperable IP Networks using Intermediate System to Intermediate System (IS-IS)

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Network Working Group                                     J. Parker, Ed.
Request for Comments: 3787                             Axiowave Networks
Category: Informational                                         May 2004


             Recommendations for Interoperable IP Networks
        using Intermediate System to Intermediate System (IS-IS)

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   This document discusses a number of differences between the
   Intermediate System to Intermediate System (IS-IS) protocol used to
   route IP traffic as described in RFC 1195 and the protocol as it is
   deployed today.  These differences are discussed as a service to
   those implementing, testing, and deploying the IS-IS Protocol to
   route IP traffic.  A companion document describes the differences
   between the protocol described in ISO 10589 and current practice.

Table of Contents

    1.  Introduction. . . . . . . . . . . . . . . . . . . . . . . . .  2
    2.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  2
    3.  Unused Features . . . . . . . . . . . . . . . . . . . . . . .  2
    4.  Overload Bit. . . . . . . . . . . . . . . . . . . . . . . . .  3
    5.  Migration from Narrow Metrics to Wide . . . . . . . . . . . .  4
    6.  Intermediate System Hello (ISH) PDU . . . . . . . . . . . . .  6
    7.  Attached Bit. . . . . . . . . . . . . . . . . . . . . . . . .  7
    8.  Default Route . . . . . . . . . . . . . . . . . . . . . . . .  8
    9.  Non-homogeneous Protocol Networks . . . . . . . . . . . . . .  8
   10.  Adjacency Creation and IP Interface Addressing. . . . . . . .  9
   11.  Security Considerations . . . . . . . . . . . . . . . . . . .  9
   12.  References. . . . . . . . . . . . . . . . . . . . . . . . . . 10
        12.1. Normative References. . . . . . . . . . . . . . . . . . 10
        12.2. Informative References. . . . . . . . . . . . . . . . . 10
   13.  Author's Address. . . . . . . . . . . . . . . . . . . . . . . 10
   14.  Full Copyright Statement. . . . . . . . . . . . . . . . . . . 11





Parker                       Informational
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