route table question

[rkmorrow]

I have a router showing the table below, my question is why the routes to the 32 bit subnet mask when the actual interface is the 16 bit mask?

Why does the router rip to this route?

If I wanted to static route these routes (16 bit) do I need to add the 32 bit routes?

I dont't understand how they got there.

R 10.31.4.2/32 [120/1] via 10.11.4.5, 00:00:10, Eth
R 10.30.0.0/16 [120/2] via 10.11.4.5, 00:00:10, Eth
R 10.31.0.0/16 [120/1] via 10.11.4.5, 00:00:10, Eth

 

[StarTAC]

the /32 is the same as saying 10.31.4.2 255.255.255.255, which basically means, that host only..

unlike the other two routes i see, the first one displays the route to a specific host, while the others display routes to a subnet, which will include several hosts...

good luck..

 

[rkmorrow]

I understand the route is to a specific host, but why was the route dynamically added in that way?

 

[gaveeve]

Is it possible that there is a loopback interface on the router?

 

[nohair]

Hi,
Yes, how odd. The only thing i could think of was a loopback address. Perhaps if you were to post a partial dump of the config of 10.11.4.5 ....

BR,
-Stephen

 

[baddos]

You are getting that route from RIP. I would check out your other routers that are running RIP and see why that host route is coming through.