Cisco Systems 8540 CSR appendix Verifying the ATM Configuration, Switch Router a, Switch Router B

Chapter 4 Configuring Interfaces

Configuring the ATM Uplink Interface (Catalyst 8540)

SVC Example

In the following example, two switch routers with Layer 3 enabled ATM interfaces are connected by means of SVCs. For SVCs, the map-list associates each IP addresses with an ATM NSAP-format address, rather than with a specific VC. This configuration could also be used to connect two switch routers with ATM interfaces through an ATM cloud of other switches:

Switch Router A

Router(config)# interface atm 1/0/0

Router(config-if)#ip address 192.192.192.1 25..255.255.0

Router(config-if)# atm pvc 1 0 5 qsaal

Router(config-if)# atm pvc 2 0 16 ilmi

Router(config-if)#atm esi-address 111111111111.00

Router(config-if)# map-group SVC

Router(config-if)# exit

Router(config)# map-list SVC

Router(config-map-list)#ip 192.192.192.2 atm-nsap BB.000000000000000000000000.222222222222.00 broadcast

Switch Router B

Router(config)# interface atm 1/0/0

Router(config-if)#ip address 192.192.192.2 25..255.255.0

Router(config-if)# atm pvc 1 0 5 qsaal

Router(config-if)# atm pvc 2 0 16 ilmi

Router(config-if)#atm esi-address 222222222222.00

Router(config-if)# map-group SVC

Router(config-if)# exit

Router(config)# map-list SVC

Router(config-map-list)#ip 192.192.192.1 atm-nsap BB.000000000000000000000000.111111111111.00 broadcast

Note the following about this configuration:

•The PVC with VPI/VCI 0 5 must be configured for signaling to set up and tear down SVCs.

•The PVC with VPI/VCI 0 16 must be configured for switch management communication using ILMI.

•The first 13 bytes of the ATM NSAP address is the prefix from the switch; the next 6 bytes is the end system identifier (ESI) and must be unique. The last byte is the selector byte and is used in making forwarding decisions.

Verifying the ATM Configuration

To verify the configuration on the ATM uplink interface, use the following commands:

Command	Purpose
show interfaces atm	Displays current ATM-specific information for the interface.
show atm vc [vcd]	Displays current information about VCs and traffic. You can specify a
	VCD to display information about.
show atm traffic	Displays information about global traffic to and from all ATM networks
	connected to the switch router.
show controllers atm	Displays clock source, SONET alarms and error rates, and register values
	to assist in troubleshooting.

	Layer 3 Switching Software Feature and Configuration Guide
4-36	78-6235-04, Cisco IOS Release 12.0(10)W5(18)