RFC 1583 (rfc1583) - Page 1 of 216
OSPF Version 2
Alternative Format: Original Text Document
Network Working Group J. Moy
Request for Comments: 1583 Proteon, Inc.
Obsoletes: 1247 March 1994
Category: Standards Track
OSPF Version 2
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is
unlimited.
Abstract
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 RFC 1247. The
differences between RFC 1247 and this memo are explained in Appendix
E. The differences consist of bug fixes and clarifications, and are
backward-compatible in nature. Implementations of RFC 1247 and of
this memo will interoperate.
Please send comments to ospf@gated.cornell.edu.
Moy
