Cisco Systems OL-7396-01 Manual De Usuario
25-18
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 25
Configuring ATM Router Module Interfaces
Configuring Multiprotocol Encapsulation over ATM
Configuring Multiprotocol Encapsulation over ATM
This section describes how to configure multiprotocol encapsulation over ATM, as defined in RFC 1483,
on the ATM router module.
on the ATM router module.
The primary use of multiprotocol encapsulation over ATM, also know as RFC 1483, is carrying multiple
Layer 3 and bridged frames over ATM. RFC 1483 traffic is routed through an ATM router module
interface using static map lists. Static map lists provide an alternative to using the ATM Address
Resolution Protocol (ARP) and ATM Inverse ARP (InARP) mechanisms. For more information on static
map lists, see
Layer 3 and bridged frames over ATM. RFC 1483 traffic is routed through an ATM router module
interface using static map lists. Static map lists provide an alternative to using the ATM Address
Resolution Protocol (ARP) and ATM Inverse ARP (InARP) mechanisms. For more information on static
map lists, see
For a detailed description of multiprotocol encapsulation over ATM, refer to the Guide to ATM
Technology.
Technology.
Note
Traffic shaping and policing are not supported on the ATM router module interfaces; for traffic shaping
and policing on ATM connections, use VP tunnels. For more information on VP tunnels, see
and policing on ATM connections, use VP tunnels. For more information on VP tunnels, see
To configure multiprotocol encapsulation over ATM on the ATM router module interface, use the
following commands, beginning in global configuration mode:
following commands, beginning in global configuration mode:
Example
The following example shows how to configure RFC 1483 on an ATM router module interface,
beginning in global configuration mode:
beginning in global configuration mode:
Switch(config)# interface atm 1/0/0.1011 multipoint
Command
Purpose
Step 1
Switch(config)# interface atm
card/subcard/port.subinterface# multipoint
card/subcard/port.subinterface# multipoint
Switch(config-subif)#
Creates the ATM router module
point-to-multipoint subinterface and enters
subinterface mode.
point-to-multipoint subinterface and enters
subinterface mode.
Note
The ATM router module only supports
point-to-multipoint subinterfaces.
point-to-multipoint subinterfaces.
Step 2
Switch(config-subif)# ip address ip-address mask Enters the IP address and subnet mask associated
with this interface.
Step 3
Switch(config-subif)# map-group name
Enters the map group name associated with this
PVC.
PVC.
Step 4
Switch(config-subif)# atm pvc 2 vci-a [upc upc]
[pd pd] [rx-cttr index] [tx-cttr index] interface
atm card/subcard/port[.vpt#] vpi-b vci-b
[upc upc] encap {aal5mux
[pd pd] [rx-cttr index] [tx-cttr index] interface
atm card/subcard/port[.vpt#] vpi-b vci-b
[upc upc] encap {aal5mux
1
| aal5snap}
1.
Only the Catalyst 8540 MSR enhanced ATM router module supports AAL5 MUX encapsulation.
Configures the PVC.
Note
The VPI number on the ATM router
module interface must be 2.
module interface must be 2.
Step 5
Switch(config-subif)# exit
Switch(config)#
Returns to global configuration mode.
Step 6
Switch(config)# map-list name
Switch(config-map-list)#
Creates a map list by naming it, and enters
map-list configuration mode.
map-list configuration mode.
Step 7
Switch(config-map-list)# ip ip-address
{atm-nsap address | atm-vc vci} [broadcast]
{atm-nsap address | atm-vc vci} [broadcast]
Associates a protocol and address with a specific
virtual circuit.
virtual circuit.