The good news about OSPFv3 is that OSPFv2 was a mature routing protocol when development began on OSPFv3. The bad news about OSPFv3 is that it is more complex in some ways than OSPFv2. But mostly the two protocols are simply different because of the differences in the underlying Layer 3 protocol. Fortunately, RFC 5340, which defines OSPFv3, goes into quite a bit of detail in describing these differences. (And this RFC is well worth a read to gain a better understanding of OSPFv3 than this chapter can provide.)

Differences Between OSPFv2 and OSPFv3

OSPFv2 and OSPFv3 share many key concepts, including most of their basic operations and the concepts of neighbor relationships, areas, interface types, virtual links, metric calculations, ...

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