Newbie needs help with two 1841s

[julian]

Hello,

I have two 1841s that need to cap off a P2P between our offices. I am pretty new to routers and can ping each routers serial interface and ethernet interfaces but I can not get it to hit across to the other subnets. I am pretty sure that I am missing a very basic premise somewhere.

I have two subnets, A & B. A is a 10.33.0.0/22 and B is a 10.33.4.0/24. Each subnet has it's own dedicated internet connection which is the first node address... for example 10.33.0.1. I have configured my DCs with a static route add 10.33.4.0 255.255.255.0 10.33.3.240 -p where 10.33.3.240 is the eth0/0 on the router A.

Subnet B is the reverse and eth0/0 on router B is 10.33.4.254.

Router A s0 is 206.186.244.122/30 and B is 206.186.244.121/30.

If I am on router A, I can ping 10.33.0.2, I can ping 10.33.3.240, and I can also ping 206.186.244.122 but in all my trials I have lost the ability to hit Router B.

If I try to view my ip routes, I get a message that says I have not configured a default gateway?

Any ideas?

Thanks for helping out a newbie.

[atif.awan · Accepted solution]

If you get the message that you do not have a default gateway configured then most probably you do not have ip routing turned on. Try putting the following command on your routers in global configuration mode:

ip routing

Make sure that you have the correct routes entered in both routers. Router A should have a route for subnet B with a next hop of router B and router B should have a route pointing to subnet A with a next hop or router A.

I am not going to get into the specifics of your design at the moment but there might be a way for you to use this p2p link without having to add static routes in all machines having to access resources across the site.

[olorunloba]

I suspect that you static routes are not properly configured. Can you post the configs here. I noticed that in the static route added on the server, used a /24 subnet i.e. 255.255.255.0. This can lead to partial connectivity as it does not cover the whole of your address range which is /22 (255.255.252.0). Ensure that your routers have the right subnet in their static routes.

[julian]

I apologize, that was a typo on my part.

[julian]

Thank you for your reply.

I saw an entry on another board where the gateway for subnet A would be router A and then on router A, 0.0.0.0 default route would point to 10.33.0.1 (or our firewall) Is this what you were refering to?

[julian]

Thank you very much for taking the time to post here. I have been struggling with the for two days and you solved it in a few minutes.

I had been using SDM to configure the router and did not want to use the IOS to setup the router.

I have changed my default gateway in DHCP to be the 10.33.3.240 address of Router A and then have a default route 0.0.0.0 pointing to our firewall 10.33.0.1. I have tested connectivity and all seems well.

Thanks again.