Routing Problem

[johnnyBravo1]

Here is the problem.

We have an Avaya Switch(p882)(172.18.1.4) here at bldg. A. We just put in a cisco router(1600) with an address of 172.18.1.6. Everyone from the 172.18.x.x can ping 172.18.1.6. But over at bldg. B (subnet of 10.x.x.x) can not ping 172.18.1.6. But bldg. B can ping everything else on 172.18.x.x. I did a tracert and it stops at 172.22.1.5 which is a vlan interface on 172.18.1.4. Does anyone have suggestions?

 

[MaxPipeline]

Chances are you need to add a static route in the Cisco to reach the 10.x.x.x network. What is most likely happening is the Cisco receives the ping, but cannot route back. Therefore it appears that the Cisco is unreachable.