Lab 8.2.1: Configuring Frame Relay

Objectives:

  • Configure Frame Relay to function correctly using standard interfaces with Frame Relay map statements.

Scenario:

You have been contracted by a small bank to install a Frame Relay network to connect their offices in Atlanta, Orlando, and Houston. Atlanta needs connectivity to both Orlando and Houston. Orlando and Houston do not need connectivity between each other. You have ordered Frame Relay service from a national Frame Relay service provider and have received the DLCIs in the above diagram. Routing should be handled using IGRP.

Notes: 

Lab Tasks:

  1. Cable the lab as shown in the diagram. Use the Adtran Atlas 550 to simulate the Frame Relay network.
  2. Configure all of the serial interfaces that connect to the Frame Relay network for Frame Relay encapsulation and set the LMI type to ANSI.

    What command is used at the interface level to configure Frame Relay encapsulation?

    What is the default Frame Relay encapsulation type?



    When should the encapsulation type IETF be used?

    What command is used at the interface level to configure the LMI type to ANSI?


  3. Configure IP addresses on the serial and ethernet interfaces.
  4. Configure IGRP using AS# 100.
  5. Frame Relay map commands must be used to map the IP addresses on the opposite end of the PVC to the associated DLCIs:
  • On the Atlanta router:

Atlanta(config)#int s0/0
Atlanta(config-if)#frame-relay map ip 192.168.4.2 17 broadcast
Atlanta(config-if)#frame-relay map ip 192.168.4.3 18 broadcast

  • On the Orlando router:

Orlando(config)#int s0/0
Orlando(config-if)#frame-relay map ip 192.168.4.1 16 broadcast

  • On the Houston router:

Houston(config)#int s0/0
Houston(config-if)#frame-relay map ip 192.168.4.1 16 broadcast

  1. Check your PVCs to make sure they are active.

    What command should be used to verify the operation of the PVCs?


  2. If your PVCs are active, ping to each address in the network.
  3. What command can be used to check your Frame Relay maps?


  4. What would have happened if we had not entered static Frame Relay map statements? Remove all of the map statements from all three routers to find out.


  5. Why would we want to map them with static entries?


  6. Verify complete routing tables and verify connectivity. Report any anomalies.