Cisco Systems A9014CFD manual Configuring T1 Controllers, 20-4

Chapter 20 Configuring T1/E1 Controllers

Configuring T1 Controllers

	Command	Purpose
Step 10
	keepalive [period [retries]]	Enables keepalive packets on the interface and specify the number of
		times keepalive packets are sent without a response before the router
	Example:	disables the interface.
	Router(config-if)# keepalive
	[period [retries]]
Step 11
	Router(config-if)# end	Exits interface configuration mode.
	Router#

Configuring T1 Controllers

Use the following steps to perform a basic T1 controller configuration: specifying the T1 controller, specifying the framing type, specifying the line code form, specifying the channel-group and time slots to be mapped, configuring the cable length, 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 T1 interfaces, complete the following steps in the global configuration mode:

	Command	Purpose
Step 1
	enable	Enables privileged EXEC mode. Enter your password if prompted.
Step 2
	configure terminal	Enters global configuration mode.
Step 3
	controller t1 slot/subslot	Specifies the controller that you want to configure. The command has the
		following syntax:
	Example:	• slot—Slot number of the interface. The slot number should be 0.
	Router(config-controller)#	• subslot—Subslot number of the interface. The supported range for
	controller t1 0/0
		subslot is 0 to 15.
Step 4
	Router(config-controller)# framing	Specifies the framing type.
	esf
Step 5
	Router(config-controller)# linecode	Specifies the line code format.
	b8zs
Step 6
	Router(config-controller)#	Specifies the channel-group and time slots to be mapped. After you
	channel-group 0 timeslots 1-24	configure a channel-group, the serial interface is automatically created.
	speed 64	• The default speed of the channel-group is 64.
		• The supported range for channel-group is 0 to 23.

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
20-4	OL-23826-09