Examine the output of the show frame-relay map command:
Which of the following statements is true of the configuration of R1?
A. Neither PVC is up
B. A frame-relay map statement was used to manually map the IP address to the DLCI on both PVCs
C. The DLCIs for both PVCs were learned using inverse ARP
D. Broadcast traffic is not allowed on either PVCs
Explanation:
The output shows that the Data Link Connection identifiers (DLCI) for both PVCs were learned using inverse ARP. In a Frame Relay topology, Layer 2 addresses are called DLCSI. Each end of a Frame Relay circuit can learn the DLCI of the other end through manual configuration, using the frame-relay map command, or it can be learned dynamically, using a process called inverse ARP. When the addresses are learned using inverse ARP, the output of the show frame-relay map command will indicate that by designating the circuit as dynamic.
Both PVCs are up, as indicated by the word active in the output for both PVCs.
A frame-relay map statement not was used to manually map the IP addresses to the DLCI on both PVCs. Were that the case, the output would indicate static in the place where it says dynamic.
Broadcast and multicast traffic are both allowed across both PVCs, as indicated by the word broadcast after each entry.
Objective:
Layer 2 Technologies
Sub-Objective:
Explain Frame Relay