Use the show frame-relay pvc command to verify
the PVC status and end-to-end connectivity of the routers. The three likely PVC
status messages are:

A Frame-Relay PVC status of "active" indicates Frame-Relay
end-to-end connectivity at Layer 2 and is associated with a working Frame-Relay
circuit. If the status is "active" and problems are occurring,
attention should be given to Layer 3 issues such as mapping IP addresses to
DLCIs and telco DLCI allocations.
Note in Figure
PVC 30
is "active". This indicates end-to-end connectivity. PVC 21 is still
inactive, which indicates a problem.
A PVC status of
"inactive" suggests that the router recognizes the DLCI configured on
its interface as being present on the Frame Relay switch, but the PVC
associated with the DLCI is not capable of communication end-to-end. Usually
this indicates that the router on the far side of the PVC is not configured
correctly.
A Frame-Relay status of "deleted" indicates that
the Frame-Relay switch is not reporting the DLCI configured on the serial
interface.
Suggested
troubleshooting steps are:
- Check that the physical layer is up.
- Verify a working LMI with the show frame-relay lmi
command.
If these steps indicate that the router is communicating successfully
with the Frame-Relay switch, then the "deleted" status indicates that
the Frame-Relay switch is not reporting the DLCI as being available. Therefore,
the router interprets that the telco has "deleted" it. The most
likely cause for this problem is a misconfigured DLCI on either the router or
at the telco.