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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 20 Configuring T1/E1 Controllers
Configuring E1 Controllers
Configuring E1 Controllers
Perform a basic E1 controller configuration by specifying the E1 controller, entering the clock source,
specifying the channel-group, configuring the serial interface, configuring PPP encapsulation, and
enabling keepalive packets. You might also need to enter other configuration commands, depending on
the requirements for your system configuration and the protocols you plan to route on the 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.
To configure the E1 controllers, complete the following steps in the global configuration mode:
Step 3
card type {e1 | t1}
slot subslot
Example:
Router(config)# card type e1 0 0
Sets the card type. The command has the following syntax:
• slot—Slot number of the interface.
• subslot—0.
When the command is used for the first time, the configuration takes
effect immediately. A subsequent change in the card type does not take
effect unless you enter the reload command or reboot the router.
Note When you are using the card type command to change the
configuration of an installed card, you must first enter the no card
type {e1 | t1} slot subslot command. Then enter the card type {e1
| t1} slot subslot command for the new configuration information.
Step 4
exit
Example:
Router(config)# exit
Router#
Exit configuration mode.
Command Purpose
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
controller e1
slot
/
port
Example:
Router(config)# controller e1 0/0
Router(config-controller)#
Specifies the controller that you want to configure.