06-21-2006 06:37 PM - edited 03-03-2019 01:04 PM
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.
Solved! Go to Solution.
06-21-2006 08:24 PM
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.
06-21-2006 08:24 PM
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.
06-21-2006 09:39 PM
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.
06-22-2006 03:33 AM
I apologize, that was a typo on my part.
06-22-2006 03:05 AM
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?
06-22-2006 03:32 AM
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.
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