Specifications

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Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Release 12.2(33)MRB
OL-21227-02
Chapter 4 Configuring the Cisco MWR 2941 Router Using the CLI
Configuration Sequence
Mapping multiple PVCs to a Pseudowire
To map a multiple PVCs to a single ATM over MPLS pseudowire, apply the xconnect command at
the subinterface level. This configuration allows you to group pseudowires logically, such as by the
BTS to which the pseudowire is connected. Follow these steps to map a multiple PVCs to an ATM
over MPLS pseudowire.
Note If you configure multiple PVCs on an N-to-1 subinterface pseudowire, you must use AAL0
encapsulation for all of the PVCs.
Note When you configure a N-to-1 pseudowire, you can also use the ignore-vpi-vci parameter. This
parameter sets the Cisco MWR 2941 to ignore the VPI/VCI value in the PW packet and rewrite the
egress ATM cell header with VPI/VCI value of the locally configured (attachment side) PVC. For more
information about the xconnect command and the ignore-vpi-vci parameter, see Appendix B,
“Cisco MWR 2941 Router Command Reference.”
a. Configure the ATM IMA interface.
Router(config)# interface atm0/ima0
a. Enter the following command to create an ATM IMA multipoint subinterface.
Router(config-if)# interface atm 0/ima0.1 multipoint
Router(config-subif)#
b. Use the xconnect command to bind an attachment circuit to the ATM IMA interface to create a
pseudowire. This example creates a pseudowire by binding the ATM circuit 100 to the remote peer
1.1.1.1.
Router(config-subif)# xconnect 1.1.1.1 100 encapsulation mpls
Router(config-subif-xconn)#
c. Use the exit command to exit the xconnect subinterface.
Router(config-subif-xconn)# exit
Router(config-subif)#
d. Use the pvc command to map a PVC to a pseudowire.
Router(config-if)# pvc 0/40 l2transport
Router(cfg-if-atm-l2trans-pvc)#
e. Use the encapsulation command to define the encapsulation type for the PVC.
Router(config-if-atm-vc)# encapsulation aal0
f. Define additional PVCs as appropriate. We recommend that you include a description for each PVC
Router(config-if)# pvc 0/41 l2transport
Router(cfg-if-atm-l2trans-pvc)# encapsulation aal0
Router(cfg-if-atm-l2trans-pvc)# description voice channel
Router(cfg-if-atm-l2trans-pvc)# exit
Router(config-subif)# pvc 0/42 l2transport
Router(cfg-if-atm-l2trans-pvc)# enc aal0
Router(cfg-if-atm-l2trans-pvc)# description data channel