Chapter 14 - Implementing Frame Relay

Question 1

What command would you use to check the status of the PVC in frame relay?

Answer 1

Show frame-relay pvc

Question 2

What is inverse ARP?

Answer 2

Inverse ARP dynamically creates a mapping between the layer 3 address (the IP address) and the layer 2 address (the local DLCI).

Question 3

What are the first 2 non-optional steps when configuring frame relay on a physical interface?

Answer 3

Step 1. Configure the physical interface to use Frame Relay encapsulation (encapsulation frame-relay interface subcommand)
Step 2. Configure an IP address on the interface or subinterface (ip address subcommand)

Question 4

When implementing a simple configuration for Frame Relay with the frame-relay encapsulation command and IP address subcommand, what 4 IOS default settings are taken advantage of?

Answer 4

1. The LMI type is automatically sensed.
2. The default encapsulation is Cisco
3. PVC DLCIs are learned via LMI status messages
4. Inverse ARP is enabled by default and is triggered when a router receives an LMI status message declaring that the VCs are up.

Question 5

What frame-relay command allows you to change the encapsulation setting per VC as opposed to changing the encapsulation on all VCs?

Answer 5

Frame-relay map