Specifications

4-81
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
The follow command assigns the interface to IMA group 0 and enables payload scrambling.
Router(config-controller)# ima-group 0 scrambling-payload
Note For more information about configuring IMA groups, see Configuring ATM IMA. For more information
about how to configure the backhaul connection, see Configuring MLPPP Backhaul.
Configuring an IMA Interface
If you want to use ATM IMA backhaul, follow these steps to configure the IMA interface.
Step 1 Specify the slot location and port of IMA interface group.
Router(config-controller)# interface ATM slot/IMA group-number
• slot—Specifies the slot location of the ATM IMA port adapter.
• group-number—Specifies the group number of the IMA group.
For example, the following command specifies the slot number as 0 and the group number as 0:
Router(config-controller)# interface atm0/ima0
Router(config-if)#
Note To explicitly configure the IMA group ID for the IMA interface, you may use the optional ima
group-id command. You cannot configure the same IMA group ID on two different IMA
interfaces; therefore, if you configure an IMA group ID with the system-selected default ID
already configured on an IMA interface, the system toggles the IMA interface to make the
user-configured IMA group ID the effective IMA group ID. At the same, the system toggles the
original IMA interface to select a different IMA group ID.
Step 2 Disable the IP address configuration for the physical layer interface.
Router(config-if)# no ip address
Step 3 Specify the ATM bandwith as dynamic.
Router(config-if)# atm bandwith dynamic
Step 4 Disable the Interim Local Management Interface (ILMI) keepalive parameters.
Router(config-if)# no atm ilmi-keepalive
For more information about configuring IMA groups, see the “Configuring ATM IMA” section on
page 4-53.