Configuring Basic Frame Relay

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There are five steps required to configure a basic Frame Relay connection:

Step 1 Select the interface and enter interface configuration mode.

Step 2 Configure a network-layer address, for example, an IP address.

Step 3 Select the encapsulation type used to encapsulate data traffic end-to-end using the following command:

encapsulation frame-relay [cisco | ietf]

The default argument is cisco. It is the recommended setting if connecting to another Cisco router. Select ietf if connecting to a router from another vendor.

Step 4 If using Cisco IOS Software Release 11.1 or earlier, specify the LMI type used by the Frame Relay switch using this command:

frame-relay lmi-type {ansi | cisco | q933a}

With Cisco IOS Software Release 11.2 or later, the LMI type is autosensed and manual configuration is required. Otherwise, the customer can obtain the LMI type from their Frame Relay service provider and manually configure it. The default LMI type is cisco.

Step 5 Configure address mapping.

On Cisco routers, the address mapping of a local DLCI to a remote IP address can be configured manually with static address mapping, or with dynamic address mapping. In the above example, the address mapping is dynamic.

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