I have an issue pinging from one host to another using Cisco 2600 routers. I can ping from a host throught router A across the t1 to router B's e0/0 port and then the ping stops. This happens going both ways. Attached below is one runnning config.
Host A - 100.100.100.3/24
Router A - e0/0-100.100.100.252/24, s0/0-172.16.1.100/24 (t1)
Router B - e0/0-100.100.1.253, s0/0-172.16.1.101/24 (t1)
Host B - 100.100.1.1/24
