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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Chapter 4 Configuring the Cisco 3825 Mobile Wireless Edge Router in a RAN-O Solution with the Command-Line
Configuration Sequence
Note With Cisco IOS Release 12.4(16)MR1 and later, the Cisco 3825 router supports the AIM-ATM-8 card.
The Cisco 3825 router supports up to 12 ATM ports with the AIM-ATM-8 card installed in slot 0 and up
to 8 ATM ports for AIM with the AIM-ATM-8 card installed in slot 1.
The AIM for ATM card (AIM-ATM) supports up to four independent ATM links.
To determine which AIM for ATM card is installed in your router, use the show diagnostics command
in privileged EXEC mode.
To configure a Cisco 3825 router for IMA, follow these steps while in the global configuration mode:
Step 1 Enter interface configuration mode and specify the location of the interface.
Router(config)# interface atm
slot
/subslot/
port
Where:
• slot—Specifies the slot number of the VWIC/HWIC previously assigned to the AIM for ATM
(Step 2 of the “Configuring UMTS Links” procedure on page 4-24).
• subslot—Specifies the subslot number of the VWIC/HWIC previously assigned to the AIM for ATM
card (Step 2 of the “Configuring UMTS Links” procedure on page 4-24).
• port—Specifies the port on the VWIC/HWIC previously assigned to the AIM for ATM card (Step 3
of the “Configuring UMTS Links” procedure on page 4-24).
For example, the following command configures the VWIC/HWIC in logical slot 0 (physical slot 0),
subslot 0, port 1 located on the motherboard of the Cisco 3825 router to be used for ATM traffic:
Router(config)# interface ATM0/2/0
Router(config-if)#
Note To see a list of the configuration commands available to you, enter ? at the prompt or press the
Help key while in the configuration mode.
Step 2 Disable the IP address configuration for the physical layer interface. This and other pr otocol parameters
should be configured on the IMA interface.
Router(config-if)# no ip address
Step 3 Disable the Interim Local Management Interface (ILMI ) keepalive parameters.
Router(config-if)# no atm ilmi-keepalive
Step 4 Specify the link that is included in an IMA group.
Router(config-if)# ima-group
group-number
Where group-number specifies the group number of the IMA group.
For example, the following command specifies the group number of the IM A group as 0:
Router(config-if)# ima-group 0
Step 5 Randomize the ATM cell payload frames.
Router(config-if)# scrambling-payload
Step 6 Perform Steps 1 to 5 to add another member link.