Example 24 debug ip rip Command Output Reveals RIP Update Information Sent by Router 1 in Figure

Router1#debug ip rip

RIP: sending v1 update to 255.255.255.255 via Serial0 (137.99.88.2) network 131.108.0.0, metric 1

Router 2 goes through the following steps before accepting the update from Router 1:

1. Is the major network received (131.108.0.0) the same as the major network of

137.99.88.0/24, which is the subnet assigned to the interface that received the update?

2. No. Do any subnets of this major network already exist in the routing table known from interfaces other than that which received the update?

3. Yes. Router 2 ignores the update.

Again, debug ip rip command output on Router 2 shows the update received by Router 2, as demonstrated in Example 2-5.

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