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