We are in the process of joining a new remote branch to our institution by connecting them to our networks (six branches with Star Schema). We have installed a Point to Point T1 from Main branch where I’m located to (Site A) to the remote branch (Site B). My goal is to backup the T1 by utilizing the VPN through the fast Internet connections that we have at both locations. I have started to configure the P2P and have encountered a routing challenge. The routers through Serial Interface 0/0/0 can talk to each other and ping each other’s interfaces. Moreover, the routers at both sites can ping/talk to the entire resources local to them but not to the nodes on the other side. So, any traffic from Router/ Site A to a node on Site B is not getting routed and the same for traffic from Router/Site B to Site A. I have attached both routers configuration to this port, please give a look and let me know what I’m doing wrong/missing. Remember, my ultimate goal is to connect these two branches for back using VPN too, but that comes next (or maybe I should do them both at the same time).
I really appreciate any comments/suggestions,
If you can ping something locally but not from remote, you might have a bad mask or gateway configured on the host (10.31.1.85). Do you have any ARP entries for 192.168.45.210? if you do, and the MAC is correct then there might be a host firewall blocking ICMP.
Also, I think ip classless is on by default so it won't show up in the running config.
you have used static routes on the T1 link you need to propagate the same static routes on all devices that are in each site.
But also of the subnet used on the T1 link itself
if you don't specify a source the ip address of the interface to destination is used
so you need to check if 10.31.1.85 device knows that it has to send the answer back to the right router for ip address 10.31.100.1
this applies to all devices in the two sites (main site and new branch)
I would suggest you to use a dynamic routing protocol in order to have automatic propagation of routes and failure detection.
I see also some strange ping of devices in the same ip subnet not working like
Site B# ping 192.168.45.210 <---------a local node to Site B
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.45.210, timeout is 2 seconds:
Success rate is 0 percent (0/5) <--------???????????????????? Why this local to the router
to be noted you have also implemented zone based firewall
Hope to help