Title: OSPF Version 2
Author(s): J. Moy.
Status: STANDARD
Date: Apr 1998
Length: 447367
Obsoletes: 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. 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.
The differences between this memo and RFC2178 are explained in Appendix G. All differences are backward-compatible in nature. Implementations of this memo and of RFCs 2178, 1583, and 1247 will interoperate.
Please send comments to ospf@gated.cornell.edu.
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