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Answers to Scenario 8-5: Frame Relay Configuration Dissection 637
Disabling Inverse ARP is unlikely in real networks. However, this exercise was added so that
you can be ready for the exam. Example 8-53 and Example 8-54 show the commands used to
migrate to not using Inverse ARP. The maps are necessary for both IP and IPX because both
need to be routed across the Frame Relay network.
The interface-dlci settings are no longer needed because the IOS can deduce which DLCI is
used by the subinterface based on the map command.
Example 8-53
Scenario 8-5, Atlanta Router--Changes for Static Mapping
Atlanta(config)# interface serial 0.1
Atlanta(config-subif)#no frame-relay interface-dlci 501
Atlanta(config-subif)#frame-relay map ip 180.1.1.2 501 broadcast
Atlanta(config-subif)#frame-relay map ipx aaa1801.0200.2222.2222 501 broadcast
Atlanta(config-subif)# interface serial 0.2
Atlanta(config-subif)#no frame-relay interface-dlci 502
Atlanta(config-subif)#frame-relay map ip 180.1.2.3 502 broadcast
Atlanta(config-subif)#frame-relay map ipx aaa1802.0200.3333.3333 502 broadcast
Atlanta(config-subif)# interface serial 0.3
Atlanta(config-subif)#no frame-relay interface-dlci 503
Atlanta(config-subif)#frame-relay map ip 180.1.3.4 503 broadcast
Atlanta(config-subif)#frame-relay map ipx aaa1803.0200.4444.4444 503 broadcast
Example 8-54
Scenario 8-5, Charlotte Router--Changes for Static Mapping
Charlotte(config)# interface serial 0.1
Charlotte(config-subif)#no frame-relay interface-dlci 500
Charlotte(config-subif)#frame-relay map ip 180.1.1.1 500 broadcast
Charlotte(config-subif)#frame-relay map ipx aaa1801.0200.1111.1111 500 broadcast
ch08.fm Page 637 Monday, March 20, 2000 5:17 PM