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Oct 24th, 2007
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Does RIP advertise subnets or the network IPs since it is a classful routing protocol? I am a little confused since when I type a ip route command, the routing table lists all classful ips but the text book I am reading shows the subnets.



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royalblues Wed, 10/24/2007 - 14:08
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There are 2 versions of RIP, version 1 and 2

Version is classful and version 2 is classless. By default the router runs version 1

The output you are seeing is mostly due to protocol version 1 running on your network. Try chnaging it to version 2 and see if you can see the subnet masks

router rip

version 2



skhirbash Wed, 10/24/2007 - 14:25
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Yes, I am running RIP v1 for learning purposes. So, if R1 has the following interfaces:

Fa0/0: and Fa0/1:, and S0/0:

And R2 has the following interfaces:

Fa0/0: and S0/0:

When I run ip route on R2, should I see or and



royalblues Wed, 10/24/2007 - 15:00
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It would depend on how the 2 routers are connected

RIP will summarize on the router which is a major network boundary

Say for example

If the routers are connected on the segment segment, then the route will be available on router 2

On the other hand if the routers are connected via say network(major network boundary), R2 will have in its routing table.

Assuming in your case the connecton between the routers does not fall on the 172.30.x.x subnet, the route will be visible on R2



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