Cisco 2620 User Manual

3-23
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-04
Chapter3 Configuring with the Command-Line Interface
Configuring Inverse Multiplexing for ATM Interfaces
Note On the 8-port E1 or T1 network module, only four ATM layer interfaces can be operational at the same
time. All the interfaces can be activated (configured as “no shutdown”) but only four at a time can be
operational and pass network traffic.
Configuring the ATM T1/E1 Interface
To configure the ATM interface, follow this procedure:
Command Purpose
Step1
Router> enable
Password: password
Router#
Enter enable mode. Enter the password.
You have entered enable mode when the prompt
changes to Router#.
Step2
Router# configure terminal
Enter configuration commands, one per line.
End with CNTL/Z.
Router(config)#
Enter global configuration mode. You have
entered global configuration mode when the
prompt changes to Router(config)#.
Step3
Router# ip routing
Router# appletalk routing
Router# ipx routing
Enable routing protocols as required for your
global configuration. This example uses IP
routing, AppleTalk routing, and Internetwork
Packet Exchange (IPX) routing.
Step4
Router(config)# interface atm 1/0
Router(config-if)#
Enter interface configuration mode. You have
entered interface configuration mode when the
prompt changes to Router(config-if)#.
Step5
Router(config-if)# ima clock line
Enter the transmit clock mode for the selected
ATM interface. The choices are internal, line, or
loop. The default is line.
Step6
Router(config-if)# cablelength short 133
For T1 interfaces only, specify the cable length
(short or long) followed by the length in feet.
You can view the acceptable cable lengths by
including the ? option after the long or short
commands.
Step7
Router(config-if)# loopback local
Specify the loopback type for this ATM interface
by entering the loopback command followed by
one of the following: line, local, payload, remote.
You can view command descriptions by including
the ? option after the loopback command.

Cisco 2620 Specifications

General

Brand	Cisco
Model	2620
Category	Network Router
Language	English