|  | 6.5 | The Configuration of Basic Frame Relay
| 6.5.9

Optional Frame Relay commands

The commands shown in the Figure can be used when necessary for enhanced router operation: Normally, Inverse ARP is used to request the next-hop protocol address for a specific connection. Responses to Inverse ARP are entered in an address-to-DLCI map (that is, Frame Relay map) table, as shown in Figure . The table is then used to route outgoing traffic. When Inverse ARP is not supported by the remote router, when configuring OSPF over Frame Relay, or when you want to control broadcast traffic while using routing, you must define the address-to-DLCI table statically. The static entries are referred to as static maps. With Frame Relay, you can increase or decrease the keepalive interval. You can extend or reduce the interval at which the router interface sends keepalive messages to the Frame Relay switch. The default is 10 seconds, and the following is the syntax: router(config-if)# keepalive number where number is the value, in seconds, that is usually 2 to 3 seconds faster (that is, a shorter interval) than the setting of the Frame Relay switch to ensure proper synchronization. If an LMI type is not used in the network, or when you are doing back-to-back testing between routers, you need to specify the DLCI for each local interface by using the following command: router(config-if)# frame-relay local-dlci number where number is the DLCI on the local interface to be used.
| Lab Activity
This lab focuses on the Frame Relay Packet Switching Protocol for connecting devices on a Wide Area Network (WAN).

| Lab Activity

The purpose of this lab is to begin to use the web as a research tool to expand your knowledge of the basic WAN technologies covered in semester 4.

| Web Links
| Troubleshooting Frame Relay