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
Optional Configurations
You can apply the following optional configurations to a pseudowire link.
• Configuring Cell Packing
• Configuring PVC Mapping
Configuring Cell Packing
Cell packing allows you to improve the efficiency of ATM-to-MPLS conversion by packing multiple
ATM cells into a single MPLS packet. Follow these steps to configure cell packing.
Step 1 Use the atm mcpt-timers command to define the three Maximum Cell Packing Timeout (MCPT) timers
under an ATM interface. The three independent MCPT timers specify a wait time before forwarding a
packet.
Router(config)# int atm1/0
Router(config-if)# atm mcpt-timers 1000 2000 3000
Step 2 Use the cell-packing command to specify the maximum number of cells in PW cell pack and the cell
packing timer that the Cisco MWR 2941 uses. This example specifies 20 cells per pack and the third
MCPT timer.
Router(config)# pvc 0/11 l2transport
Router(cfg-if-atm-l2trans-pvc)# encapsulation aal0
Router(cfg-if-atm-l2trans-pvc)# cell-packing 20 mcpt-timer 3
Configuring PVC Mapping
PVC mapping allows you to map PVCs from multiple cell site routers to equivalent PVCs on a single
aggregation node.
Note PVC mapping only applies to N-to-1 cell mode and port mode. You can achieve a similar effect for AAL
5SDU mode and VCC one-to-one mode by configuring a pseudowire between two PVCs with different
VPI/VCI values on two PEs.
The following example shows how to use the pw-pvc command to map a the local PVCs 0/11 and 0/12
to the remote PVCs 0/11 and 0/12.
(config)# int atm1/0
(config-if)# xconnect 25.25.25.25 2000 encapsulation mpls
(config-if)# pvc 0/11 l2transport
(cfg-if-atm-l2trans-pvc)# encapsulation aal0
(cfg-if-atm-l2trans-pvc)# pw-pvc 1/11
(config-if)# pvc 0/12 l2transport
(cfg-if-atm-l2trans-pvc)# encapsulation aal0
(cfg-if-atm-l2trans-pvc)# pw-pvc 1/12