OSPF Database Exchange Summary List Optimization
RFC 5243, “OSPF Database Exchange Summary List Optimization”, is an Informational document published in May 2008 by R. Ogier. It has since been updated by RFC 9454. The canonical text is published by the RFC Editor.
Abstract
This document describes a backward-compatible optimization for the Database Exchange process in OSPFv2 and OSPFv3. In this optimization, a router does not list a Link State Advertisement (LSA) in Database Description packets sent to a neighbor, if the same or a more recent instance of the LSA was listed in a Database Description packet already received from the neighbor. This optimization reduces Database Description overhead by about 50% in large networks. This optimization does not affect synchronization, since it only omits unnecessary information from Database Description packets. This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 5243 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 5242 A Generalized Unified Character Code: Western European and CJK Sections
- RFC 5244 Definition of Events for Channel-Oriented Telephony Signalling
- RFC 5241 Naming Rights in IETF Protocols
- RFC 5240 Protocol Independent Multicast Bootstrap Router MIB
- RFC 5246 The Transport Layer Security Protocol Version 1.2
- RFC 5239 A Framework for Centralized Conferencing
- RFC 5247 Extensible Authentication Protocol Key Management Framework
- RFC 5238 Datagram Transport Layer Security over the Datagram Congestion Control Protocol