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24-19
ATM and Layer 3 Switch Router Software Configuration Guide
OL-1911-05
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:
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.
Command Purpose
Step 1
Switch(config)# interface atm card/subcard/port
Switch(config-if)#
Specifies the ATM router module interface to
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
card/subcard/port vpi vci encap {aal5mux
1
|
aal5snap}[inarp minutes]
1. Only the Catalyst 8540 MSR enhanced ATM router module supports AAL5 MUX encapsulation.
Creates a PVC and enables ATM InARP.
Note The VPI number on the ATM router
module interface must be 2.