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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
When configuring an interface speed and duplex mode, follow these guidelines:
• If both ends of the line support auto-negotiation, we highly reco mmend the default auto negotiation
settings.
• When auto-negotiation is turned on for either speed or duplex mode, it auto- negotiates both spee d
and the duplex mode.
• If one interface supports auto-negotiation, and the interface at the other end does not, configure the
duplex mode and speed on both interfaces. If you use the auto-negotiation setting on the supported
side, the duplex mode setting will be set at half-duplex.
Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,
you can exit the privileged level and return to the user level by entering disable at the Router# prompt.
To configure speed and duplex operation, follow these steps, while in the interface configuration mode:
Step 1 Specify the duplex operation.
Router(config-if)# duplex [auto | half | full]
Step 2 Specify the speed.
Router(config-if)# speed [auto | 1000 | 100 | 10]

Enabling the GE Interface

Note In the following procedure, press the Return key after each step unless otherwise noted. At any time,
you can exit the privileged level and return to the user level by entering disable at the Router# prompt.
Once you have configured the GE interface, enable it, by following this step, while in the interface
configuration mode:
Step 1 Enable the interface.
Router(config-if)# no shutdown
Configuring the Backhaul Links
To configure the backhaul links, complete the following tasks:
• Configuring the Card Type for the Cisco 2-port T1/E1-RAN, this page
• Configuring E1 Controllers, page 4-11
• Configuring T1 Controllers, page 4-12