Title: OSPF Version 2
Author(s): J. Moy.
Status: DRAFT STANDARD
Date: Mar 1994
Length: 465711
Obsoletes: RFC1247
Obsoleted by: RFC2178
This memo documents version 2 of the OSPF protocol. OSPF is a link-state routing protocol. It is designed to be run internal to a single Autonomous System. Each OSPF router maintains an identical database describing the Autonomous System's topology. From this database, a routing table is calculated by constructing a shortest- path tree.
OSPF recalculates routes quickly in the face of topological changes, utilizing a minimum of routing protocol traffic. OSPF provides support for equal-cost multipath. Separate routes can be calculated for each IP Type of Service. An area routing capability is provided, enabling an additional level of routing protection and a reduction in routing protocol traffic. In addition, all OSPF routing protocol exchanges are authenticated.
OSPF Version 2 was originally documented in RFC1247. The differences between RFC1247 and this memo are explained in Appendix E. The differences consist of bug fixes and clarifications, and are backward-compatible in nature. Implementations of RFC1247 and of this memo will interoperate.
Please send comments to ospf@gated.cornell.edu.
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