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Cisco IOS Cookbook, 2nd Edition by Ian Brown, Kevin Dooley

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Classical IP Over ATM

Problem

You want to configure your router to support ATM SVCs and Classical IP over ATM.

Solution

For Classical IP over ATM, you must define at least one ATMARP server:

Router1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router1(config)#interface ATM1/0
Router1(config-if)#no ip address
Router1(config-if)#atm ilmi-keepalive
Router1(config-if)#pvc 0/5 qsaal
Router1(config-if-atm-vc)#exit
Router1(config-if)#pvc 0/16 ilmi
Router1(config-if-atm-vc)#exit
Router1(config-if)#exit
Router1(config)#interface ATM1/0.1 multipoint
Router1(config-subif)#ip address 192.168.123.1 255.255.255.0
Router1(config-subif)#atm esi-address A000C0A87B01.01
Router1(config-subif)#atm arp-server self
Router1(config-subif)#exit
Router1(config)#end
Router1#

The remaining ATM devices in the network can be clients of this server:

Router2#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router2(config)#interface ATM1/0
Router2(config-if)#no ip address
Router2(config-if)#atm ilmi-keepalive
Router2(config-if)#pvc 0/5 qsaal
Router2(config-if-atm-vc)#exit
Router2(config-if)#pvc 0/16 ilmi
Router2(config-if-atm-vc)#exit
Router2(config-if)#exit
Router2(config)#interface ATM1/0.1 multipoint
Router2(config-subif)#ip address 192.168.123.2 255.255.255.0
Router2(config-subif)#atm esi-address A000C0A87B02.01
Router2(config-subif)#atm arp-server nsap 47.00918100000000e014cd0001.A000C0A87B01.01
Router2(config-subif)#exit
Router2(config)#end Router2# ...

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