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The OSPF Opaque LSA Option (RFC2370)

IP.com Disclosure Number: IPCOM000002942D
Original Publication Date: 1998-Jul-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 12 page(s) / 31K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Coltun: AUTHOR

Abstract

This memo defines enhancements to the OSPF protocol to support a new class of link-state advertisements (LSA) called Opaque LSAs. Opaque LSAs provide a generalized mechanism to allow for the future extensibility of OSPF. Opaque LSAs consist of a standard LSA header followed by application-specific information. The information field

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 9% of the total text.

Network Working Group R. Coltun

Request for Comments: 2370 FORE Systems

See Also: 2328 July 1998

Category: Standards Track

The OSPF Opaque LSA Option

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1998). All Rights Reserved.

Table Of Contents

1.0 Abstract ................................................. 1

2.0 Overview ................................................. 2

2.1 Organization Of This Document ............................ 2

2.2 Acknowledgments .......................................... 3

3.0 The Opaque LSA ........................................... 3

3.1 Flooding Opaque LSAs ..................................... 4

3.2 Modifications To The Neighbor State Machine .............. 5

4.0 Protocol Data Structures ................................. 6

4.1 Additions To The OSPF Neighbor Structure ................. 6

5.0 Management Considerations ................................ 7

6.0 Security Considerations .................................. 9

7.0 IANA Considerations ...................................... 10

8.0 References ............................................... 10

9.0 Author's Information ..................................... 11

Appendix A: OSPF Data Formats ................................ 12

A.1 The Options Field ........................................ 12

A.2 The Opaque LSA ........................................... 13

Appendix B: Full Copyright Statment .......................... 15

1.0 Abstract

This memo defines enhancements to the OSPF protocol to support a new

class of link-state advertisements (LSA) called Opaque LSAs. Opaque

LSAs provide a generalized mechanism to allow for the future

extensibility of OSPF. Opaque LSAs consist of a standard LSA header

followed by application-specific information. The information field

may be used directly by OSPF or by other applications. Standard OSPF

link-state database flooding mechanisms are used to distribute Opaque

LSAs to all or some limited portion of the OSPF topology.

2.0 Overview

Over the last several years the OSPF routing protocol [OSPF] has been

widely deployed throughout ...