Cisco Systems OL-1911-05 Ethernet Router, Switchconfig-if# atm pvc 2 vci interface atm, 24-19

Chapter 24 Configuring ATM Router Module Interfaces

Configuring Classical IP over ATM in a PVC Environment

Ethernet Router

RouterB# configure terminal

RouterB(config)# ipx routing

RouterB(config)# interface fastethernet 2/0

RouterB(config-if)#ip address 20.1.1.1 255.255.255.0

RouterB(config-if)# ipx network 2011

RouterB(config-if)# end

RouterB#

Configuring Classical IP over ATM in a PVC Environment

This section describes how to configure classical IP over ATM, as described in RFC 1577, in a PVC environment on the ATM router module. The ATM Inverse ARP (InARP) mechanism is applicable to networks that use permanent virtual connections (PVCs), where connections are established but the network addresses of the remote ends are not known. For more information on configuring ATM ARP and ATM InARP, see Chapter 12, “Configuring IP over ATM,”

For a description of classical IP over ATM and RFC 1577, refer to the Guide to ATM Technology.

In a PVC environment, configure the ATM InARP mechanism on the ATM router module by performing the following steps, beginning in global configuration mode:

	Command	Purpose
Step 1
	Switch(config)# interface atm card/subcard/port	Specifies the ATM router module interface to
	Switch(config-if)#	configure.
Step 2
	Switch(config-if)# ip address ip-address mask	Specifies the IP address of the interface.
Step 3
	Switch(config-if)#atm pvc 2 vci interface atm	Creates a PVC and enables ATM InARP.
	card/subcard/port vpi vci encap {aal5mux1	Note The VPI number on the ATM router
	aal5snap} [inarp minutes]
		module interface must be 2.

1.Only the Catalyst 8540 MSR enhanced ATM router module supports AAL5 MUX encapsulation.

Repeat these tasks for each PVC you want to create.

The inarp minutes interval specifies how often inverse ARP datagrams are sent on this virtual circuit. The default value is 15 minutes.

Example

The following example shows how to configure an IP-over-ATM interface on interface ATM 3/0/0, using a PVC with AAL5SNAP encapsulation, InARP set to ten minutes, VPI = 2, and VCI = 100:

Switch(config)# interface atm 3/0/0 Switch(config-if)# ip address 11.11.11.11 255.255.255.0

Switch(config-if)#atm pvc 2 100 interface atm 0/0/0 50 100 encap aal5snap inarp 10

Configuring Classical IP over ATM in an SVC Environment

This section describes how to configure classical IP over ATM in an SVC environment on your ATM router module. It requires configuring only the device’s own ATM address and that of a single ATM Address Resolution Protocol (ARP) server into each client device.

	ATM and Layer 3 Switch Router Software Configuration Guide
OL-1911-05		24-19