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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: 2019-Feb-11
Document File: 11 page(s) / 18K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Parker: AUTHOR

Related Documents

10.17487/RFC3787: DOI

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 memo provides information for the Internet community.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 13% 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 of original design choices have been modified. This document describes some of the differences between the protocol as described in RFC 1195 [2] and the protocol that can be observed on the wire today. A companion document describes the differences between the protocol described in ISO 10589 and current practice [8].

The key words "MUST", "MUST NOT", "SHOULD", "SHOULD NOT" and "MAY" in this document are to be interpreted as described in RFC 2119 [3].

2. Acknowledgments

This document is the work of many people, and is the distillation of over a thousand mail messages. Thanks to Vishwas Manral, who pushed to create such...

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