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Disabling or Reenabling Inverse ARP

Inverse ARP is used to build dynamic address mappings in Frame Relay networks running AppleTalk, Banyan VINES, DECnet, IP, Novell IPX, and XNS. Inverse ARP allows your FRAD to discover the protocol address of a device associated with the VC.

Inverse ARP is enabled by default, but you have the option of explicitly disabling it for a given protocol and DLCI pair. You should disable or reenable Inverse ARP under the following conditions:

• You should disable Inverse ARP for a selected protocol and DLCI pair when you know that the protocol is not supported on the other end of the connection.

• You should reenable Inverse ARP for a protocol and DLCI pair if conditions or equipment change and the protocol is then supported on the other end of the connection.

Inverse ARP is not required if you use a point-to-point interface, because there is only a single destination, and discovery is not required.

To enable Inverse ARP for a specific protocol and DLCI pair, use the following command:

R4(config-if)#frame-relay inverse-arp protocol dlci

To disable Frame Relay Inverse ARP for a specific protocol and DLCI pair, use the following command:

R4(config-if)#no frame-relay inverse-arp protocol dlci

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