OSPF and IS-IS: Choosing an IGP for Large-Scale Networks

12.2. OSPFv3

IPv6 introduces an interesting opportunity that is not at first expected or intended. That is, as long as we are transitioning our networks (from IPv4 to IPv6), we might as well transition several long-standing but acknowledged poor networking practices. Chief among these practices are the way we do multihoming and the way we do security. Although discussion of these changes is beyond the scope of this book, pointing out this opportunity is important because the same thinking has been applied to OSPF. That is, in developing a new version of OSPF to accommodate IPv6, the opportunity exists to apply lessons learned and improve the protocol itself. This has in fact happened, and OSPFv3 is improved over OSPFv2 for reasons that have ...