I was hoping somebody maybe able to have some suggestions with a parculiar problem we have with Layer 3 connectivity to a 3750 switch which is deployed in a remote location. The problem we are experiencing is unexpected timeouts when trying to connect either from or two the switch from a remote network. It's unexpected as we have no problems with the windows machines connecting over the same link through the same switch, but the cisco switch seems to be dropping the icmp packets beyween two radio's onwards on one of the microwave links between the two locations. This is all layer two and no routing between any of the networks is involved just one large /16 subnet.
The lay of the the land is a 3750 switch has two vlans configured whereby connected to port Gi1/0/2 that is a 3com switch with a a load of windows servers, workstations attached. Connected on port gi1/0/1 is a microwave radio (or a series of them!) to form the link to an alternative location with another small network both are within the same VLAN on the switch. I have poured over the config and naturally the vlan is up, there is no ACL's at all; i have played with TTL by in an extended ping but to no avail. It's just for some reason icmp packet's are being dropped between two radio's and after that nothing when pinging from and to the switch, there is no ICMP disabled on the radio's either...it's just strange.
If anybody's got any idea's i would be glad to hear them!