RFC 2370 (rfc2370) - Page 1 of 15


The OSPF Opaque LSA Option



Alternative Format: Original Text Document



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