Specifications

48
Channelized and Electrical Interface Line Card Installation and Configuration
78-16417-02
Configuring and Troubleshooting Line Card Interfaces
Step 2 In global configuration mode, enter the controller configuration mode by entering the controller
command and specifying a OC-12/STM-4 interface, as follows:
Router(config)# controller SONET 1/0
Router(config-controller)#
Step 3 Set the clock source to line or internal:
Router(config-controller)# [no] clock source {line | internal}
Use the no form of this command to restore the default value, which is line.
Step 4 Change the OC-12/STM-4 controller loopback mode:
Router(config-controller)# [no] loopback {line | internal}
Use the no form of this command to clear the loop setting.
Step 5 Change the framing type for the port:
Router(config-controller)# framing {sonet | sdh}
Note Both OC-3/STM-1 ports should be configured to the same framing type: either both ports
configured for SONET, or both ports configured for SDH. The specific restriction applies to
mixing E1 and T1 channels on one line card, which is not supported. If you attempt to violate
this restriction, the system will display a warning message.
Step 6 Change the shutdown state to up and enable the controller:
Router(config-controller)# [no] shutdown
The no shutdown command passes an enable command to the 2-port channelized OC-3/STM-1
(DS1/E1) line card. It also causes the line card to configure itself based on the current configuration
parameter values.
Table 28 shows the default OC-12 controller configuration of a 2-port channelized OC-3/STM-1
(DS1/E1) line card in a Cisco 12000 Series Router.
Table 28 2-Port Channelized OC-3/STM-1 (DS1/E1) Line Card Controller Configuration Default
Value s
Parameter Configuration Command Default Value
Framing [no] framing [sdh | sonet]sonet
Clock source [no] clock source [internal | line] line
Loop internal [no] loopback [internal | line] no loopback
Shutdown [no] shutdown no shutdown