OSPF Database Exchange Summary List Optimization

Document Type Expired Internet-Draft (ospf WG)
Last updated 2007-12-11
Stream IETF
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a backward compatible optimization for the Database Exchange process in OSPFv2 and OSPFv3. In this optimization, a router does not list an 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.


Richard Ogier (rich.ogier@earthlink.net)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)