@misc{rfc5243, series = {Request for Comments}, number = 5243, howpublished = {RFC 5243}, publisher = {RFC Editor}, doi = {10.17487/RFC5243}, url = {https://www.rfc-editor.org/info/rfc5243}, author = {Richard Ogier}, title = {{OSPF Database Exchange Summary List Optimization}}, pagetotal = 5, year = 2008, month = may, 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.}, }