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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: 2019-Feb-15
Document File: 15 page(s) / 20K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Coltun: AUTHOR

Related Documents

10.17487/RFC2370: DOI

Abstract

This memo defines enhancements to the OSPF protocol to support a new class of link-state advertisements (LSA) called Opaque LSAs. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 10% 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

Coltun Standards Track [Page 1]

RFC 2370 The OSPF Opaque LSA Option July 1998

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 the Internet. As a result of this deployment and the evolution of networking technology, OSPF has been extended to support many options; this evolution will obviously continue.

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. The information contained in Opaque LSAs may be used directly by OSPF or indirectly...

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