I have a test lab setup and cant seem to be able to ping hosts that are connected over a serial connection, but I can ping from those hosts with no problem.
I have 2 Layer 3 switches and 2 2501 routers.
From Router1, I can ping all interfaces connected on SWITCHA and ROUTER2 but NOT SWITCHB.
From ROUTER2, I can ping all interfaces connected on SWITCHB and ROUTER1 but NOT SWITCHA.
From SWITCHA & SWITCHB, I can ping any interface on any router or switch.
Is this becasue of a serial interface issue?
Router1 is connected to Router2 via a serial cable. Clock rate is set to 4000000 on Router2 serial interface so I can ping the interfaces with no problem.
Anyone know what this is?
When you ping from Router1, the source IP is the serial interface so Switch B needs to have this subnet on its routing table. It sounds like Switch B only has the Switch A subnet on its routing table and vice-versa.
Same idea is behind the problem facing Router2 towards Switch A.