The OSPF Opaque LSA Option
RFC 5250, “The OSPF Opaque LSA Option”, is a Proposed Standard document published in July 2008 by L. Berger, I. Bryskin, A. Zinin, R. Coltun. It obsoletes RFC 2370. The canonical text is published by the RFC Editor.
Abstract
This document defines enhancements to the OSPF protocol to support a new class of link state advertisements (LSAs) 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.
This document replaces RFC 2370 and adds to it a mechanism to enable an OSPF router to validate Autonomous System (AS)-scope Opaque LSAs originated outside of the router's OSPF area. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5250 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 5249 Templates for Internet-Drafts Containing MIB Modules
- RFC 5251 Layer 1 VPN Basic Mode
- RFC 5248 A Registry for SMTP Enhanced Mail System Status Codes
- RFC 5252 OSPF-Based Layer 1 VPN Auto-Discovery
- RFC 5247 Extensible Authentication Protocol Key Management Framework
- RFC 5253 Applicability Statement for Layer 1 Virtual Private Network Basic Mode
- RFC 5246 The Transport Layer Security Protocol Version 1.2
- RFC 5254 Requirements for Multi-Segment Pseudowire Emulation Edge-to-Edge