Other Routing Protocols for IPv6
The final section of this chapter is focused on upcoming routing protocols that are still in draft stage. The two protocols discussed are Routing IPv6 with IS-IS and EIGRPv6.
Routing IPv6 with IS-IS
IPv6 support with IS-IS defined in the draft document http://www.ietf.org/internet-drafts/draft-ietf-isis-ipv6-02.txt. This document is based on the specifications for integrated IS-IS as defined in RFC 1195. Without in-depth knowledge of integrated IS-IS, the IPv6 extension cannot be understood. Note that the draft number may have increased by one or more when you try to find it.
Integrated IS-IS
Unlike the previous routing protocol discussions, this section gives only a very brief overview of integrated IS-IS. IS-IS originally defines the exchange of routing information between Intermediate Systems (ISes, otherwise known as routers) for the OSI network layer protocols CLNP and CONS. Other protocols use other routing protocols. Having separate routing protocols for each network layer is sometimes referred to as “ships in the night.” Each routing protocol uses (or maybe wastes) its own resources, such as CPU and memory. A misbehaving routing protocol can destabilize another routing protocol.
An integrated routing protocol uses resources efficiently and is more stable. That is the idea behind integrated IS-IS (i/IS-IS), in which the routing protocol has been adapted to carry concurrently routing information for the OSI network protocols and for IPv4. This ...
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