Help!! Rip is publishing my internal network

[paulow1978]

Hi there,

I am very new to cisco networking and have just been configuring the gateways on a couple of routers either end of a leased line (between corporate and the remote site). At our corporate office we have another router that goes out to the internet however.... when I put the gateways on to the two leased line routers they started chucking out rip packets to the iana router with our leased line address and internal address of the remote site. I have a cisco 805 router at either end using cisco ios software. Does anyone know how I can turn rip off? also am I causing considerable damage/security issues with this for my network?

thanks and thanks again, you may save my bacon!

Paul

[rob_lay]

Hi,

I assume that you want to run RIP on your network??

If then you can remove the network interface that you have connected to your ISP. On the router in your office connected to the internet, use the following commands

Router(config)#router rip

Router(config-router)#no network a.b.c.d

where a.b.c.d is the subnet which is connected on the interface to your ISP router. This will stop that subnet/interface participating in the RIP process.

Obviously I don't know what your IP addressing scheme is like, but you need to bear in mind that RIP is a classful protocol.

To turn off RIP on the entire router use the command

Router(config)#no router rip

This will turn off RIP completely on the router.

Hope this helps.

Cheers

Rob

[paulow1978]

Thanks Rob, I have all settings changes in flash memory in case i mess it up. I used the command "no router ip" to disable rip but It stopped the router working completely and I couldnt ping the nework on the other side of it. Am I missing something here? I assumed that your router would still function if you have static routes on it and rip was disabled?

[rob_lay]

Hi Paul.

Ok, if you've found that turning off RIP completely has now stopped you being able to ping then RIP must have been propogating routes that you need and don't have in the static config.

Can you post the following

The static route configuration of your router, the output of "show ip route" and the ip address that you're trying to ping?

You're right, if you have a static route configured it should work.

Once you've posted that we should be able to see where the route is to your ping destination.

Cheers

Rob

[paulow1978]

ahhh! the penny has dropped! We had a cable and wireless company setup the routers for the leaseline. I presume as they set no default gateway (because at the time the remote users did not need internet) they probably jusy set up rip between the two routers and didn't specify a gateway. This probably meant when i specified the gateways rip was trying to get out on the inet. The reason i was typing in static routes was to get people on the remote site internet access.

thanks for your help rob, I have to go out for a few hours but I may need some more help so I'll post back a bit later. jeez there is so much to learn!

thanks

Paul