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Recommendations for Interoperable IP Networks using Intermediate System to Intermediate System (IS-IS) (RFC3787)

IP.com Disclosure Number: IPCOM000028685D
Original Publication Date: 2004-May-01
Included in the Prior Art Database: 2004-May-27
Document File: 12 page(s) / 25K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Parker: AUTHOR [+2]

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.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 11% of the total text.

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                      [Page 1]

RFC 3787         Interoperable IP Networks using IS-IS          May 2004

1.  Introduction

   Interior Gateway Protocols such as IS-IS are designed to provide

   timely information about the best routes in a routing domain.  The

   original design of IS-IS, as described in ISO 10589 [1] has proved to

   be quite durable.  However, a number...