The show interfaces command displays information regarding the encapsulation and Layer 1 and Layer 2 status. It also displays information about the following:

• The LMI type
• The LMI DLCI
• The Frame Relay data terminal equipment/data circuit-terminating equipment (DTE/DCE) type

Normally, the router is considered a data terminal equipment (DTE) device. However, a Cisco router can be configured as a Frame Relay switch. The router becomes a data circuit-terminating equipment (DCE) device when it is configured as a Frame Relay switch.

Use the show frame-relay lmi command to display LMI traffic statistics. For example, this command demonstrates the number of status messages exchanged between the local router and the local Frame Relay switch.

Use the show frame-relay pvc [interface interface] [dlci] command to display the status of each configured PVC as well as traffic statistics. This command is also useful for viewing the number of BECN and FECN packets received by the router. The PVC status can be active, inactive, or deleted.

The show frame-relay pvc command displays the status of all the PVCs configured on the router. Specifying a PVC will show the status of only that PVC. In Figure , the show frame-relay pvc 100 command displays the status of only PVC 100.

Use the show frame-relay map command to display the current map entries and information about the connections. The following information interprets the show frame-relay map output that appears in Figure :

• 100 is the decimal value of the local DLCI number
• 0x64 is the hex conversion of the DLCI number, 0x64 = 100 decimal
• 0x1840 is the value as it would appear on the wire because of the way the DLCI bits are spread out in the address field of the Frame Relay frame
• 10.140.1.1 is the IP address of the remote router, dynamically learned via the Inverse ARP process
• Broadcast/multicast is enabled on the PVC
• PVC status is active

To clear dynamically created Frame Relay maps, which are created using Inverse ARP, use the clear frame-relay-inarp command.