November 2005
Intermediate to advanced
480 pages
13h 38m
English
Content preview from OSPF and IS-IS: Choosing an IGP for Large-Scale Networks
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Chapter 12. Extensions for IPv6
One of the more significant differences between OSPF and IS-IS—a difference that you have already observed in the previous three chapters—is that IS-IS is much easier to extend to support new features and capabilities than is OSPF. This difference is nowhere more striking than in the two protocols’ support for IP version 6. IS-IS is extended to support this “next generation” of IP through the simple definition of two new TLVs. OSPF, on the other hand, requires an entirely new version: OSPFv3.
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