Cisco Systems OC-12/STM-14

CiscoIOS Software Configuration for th e 1-Port Chann elized OC-12/STM-4 (DS3) Line Card

How to Configure the 1-Port Channelized OC-12/STM-4 (DS3) Line Card

Cisco IOS Release 12.0(8)S

(Remainder of displayed text omitted from example)

Tabl e 1 shows the default OC-12 controller configuration of a 1-port channelized OC-12/STM-4 (DS3)

line card in a Cisco 12000 Series Router. In controller configuration mode, select an OC-12 controller

for configuration using the controller oc12 slot/port command.

The following steps make up a basic controller configuration for the 1-port channelized OC-12/STM-4

(DS3) line card on a router.

Step 1 Enter global configuration mode by entering configure terminal at the privileged EXEC prompt:

Router# configure terminal

Router(config)#

Step 2 Enter controller configuration mode by entering the controller OC-12 slot/port global configuration

command and specify the router slot number and port number:

Router(config)# controller OC12 1/0

Router(config-controller)#

Step 3 Set the clock source by entering the clock source controller configuration command and specify line or

internal:

Router(config-controller)# [no] clock source {line | internal}

Use the no form of this command to restore the default value, line.

Step 4 To change the OC-12 controller payload scrambling:

Router(config-controller)# [no] scramble

Use the no form of this command to remove scrambling. The default value is scrambling.

Step 5 To change the OC-12 controller loopback mode:

Router(config-controller)# [no] loopback {line | internal}

Use the no form of this command to remove the loop.

Step 6 To change the shutdown state to up and enable the controller, enter the no shutdown controller

configuration command:

Router(config-controller)# [no] shutdown

The no shutdown command passes an enable command to the 1-port channelized OC-12/STM-4 (DS3)

line card. It also causes the line card to configure itself based on the previous configuration commands

sent.

Table1 1-Port Channelized OC-12/STM-4 (DS3) Line Card Controller Configuration Default Values

Parameter Configuration Command Default Value

Clock source [no] clock source [internal | line] line

Loop internal [no] loopback [internal | line] no loopback

Shutdown [no] shutdown no shutdown