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Routing TCP/IP, Volume I (CCIE Professional Development) by Jeff Doyle

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Operation of RIPv2

All of the operational procedures, timers, and stability functions of RIPv1 remain the same in version 2, with the exception of the broadcast updates. RIPv2 multicasts updates to other RIPv2-speaking routers, using the reserved class D address 224.0.0.9. The advantage of multicasting is that devices on the local network that are not concerned with RIP routing do not have to spend time “unwrapping” broadcast packets from the router. The multicast updates are examined further in the section, “Compatibility with RIPv1.”

After a look at how the RIP message format accommodates the version 2 extensions, this section focuses on the operation and benefits of these additional features.

RIPv2 Message Format

The RIPv2 message format ...

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