8.2 Configuring Frame Relay
8.2.1 Steps to enable Frame Relay
A basic Frame Relay configuration assumes that you want to configure Frame Relay on one or more physical interfaces. Perform the following:
  1. Select the interface and enter interface configuration mode.
  2. Configure a network-layer address, for example, an IP address.
  3. Select the encapsulation type used to encapsulate data traffic end to end:

router(config-if)#encapsulation frame-relay [cisco | ietf]

The default is cisco. Use it if connecting to another Cisco router. Select ietf if connecting to a router not provided by Cisco.

  1. If using Cisco IOS Release 11.1 or earlier, specify the LMI type used by the Frame Relay switch:

router(config-if)#frame-relay lmi-type {ansi | cisco | q933i}

The default is cisco.

With Cisco IOS Release 11.2 or later, the LMI type is autosensed, so no configuration is needed.

  1. Configure address mapping. The Figure provides a visual representation of address mapping.

Use the frame-relay map command to configure static address mapping. In Figure , the headquarters router is configured with a static map to the branch router. The syntax for the command follows is shown in Table :

Router(config-ig)#frame-relay map protocol protocol-address dlci [broadcast] [ietf | cisco]

Lab Activity    
  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.