A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Open Shortest Path First IGP Working Group of the
IETF.
Title : OSPF for IPv6
Author(s) : R. Coltun, D. Ferguson, J. Moy
Filename : draft-ietf-ospf-ospfv6-07.txt
Pages : 93
Date : 11-Oct-99
This document describes the modifications to OSPF to support version 6
of the Internet Protocol (IPv6). The fundamental mechanisms of OSPF
(flooding, DR election, area support, SPF calculations, etc.) remain
unchanged. However, some changes have been necessary, either due to
changes in protocol semantics between IPv4 and IPv6, or simply to handle
the increased address size of IPv6.
Changes between OSPF for IPv4 and this document include the following.
Addressing semantics have been removed from OSPF packets and the basic
LSAs. New LSAs have been created to carry IPv6 addresses and prefixes.
OSPF now runs on a per-link basis, instead of on a per-IP-subnet basis.
Flooding scope for LSAs has been generalized. Authentication has been
removed from the OSPF protocol itself, instead relying on IPv6's
Authentication Header and Encapsulating Security Payload.
Most packets in OSPF for IPv6 are almost as compact as those in OSPF
for IPv4, even with the larger IPv6 addresses. Most field- and
packet-size limitations present in OSPF for IPv4 have been relaxed.
In addition, option handling has been made more flexible.
All of OSPF for IPv4's optional capabilities, including on-demand
circuit support, NSSA areas, and the multicast extensions to OSPF
(MOSPF) are also supported in OSPF for IPv6.
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