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Cisco IOS Software Configuration for the 1-Port Channelized OC-12/STM-4 (DS3) Line Card
How to Configure the 1-Port Channelized OC-12/STM-4 (DS3) Line Card
5
Cisco IOS Release 12.0(8)S
The prompt changes to interface configuration mode. The following example is for a 1-port channelized
OC-12/STM-4 (DS3) line card in chassis slot 1:
Router(config)# interface serial 1/0:1
Router(config-if)#
Step 4 Specify framing by selecting the framing c-bit serial interface configuration command:
Router(config-if)# framing c-bit
Step 5 Enable payload scrambling by selecting the scramble serial interface configuration command:
Router(config-if)# scramble
Step 6 Assign an IP address and subnet mask to the interface with the ip address configuration command, as
in the following example:
Router(config-if)# ip address 10.1.2.3 255.0.0.0
Step 7 Turn off keepalive messages:
Router(config-if)# no keepalive
Although some encapsulations benefit from keepalive processing (for example, HDLS), Cisco 12000
Series Routers do not require keepalive messages.
Step 8 Change the shutdown state to up and enable the interface:
Router(config-if)# 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.
Step 9 Add any other configuration commands required to enable routing protocols and adjust the interface
characteristics.
Step 10 When you have included all the configuration commands to complete the configuration, type end or
enter ^Z (hold down the Control key while you press Z) to exit configuration mode.
Step 11 Write the new configuration to memory:
Router# copy running-config startup-config
Router#
The system displays an OK message when the configuration has been stored.
After you have completed your configuration, you can check it using
show commands. For an
explanation of show commands, see the “Using show Commands to Check System Status” section on
page 8.
Cisco Remote Connection Management
The 1-port channelized OC-12/STM-4 (DS3) line card consists of high-density DS3 service through 12
channels that provide DS3 interfaces through fiber-optic connectors for the Cisco 12000 Series Router.
There are two sides to the network, a local (near-end) side and a remote (far-end) side. The 1-port
channelized OC-12/STM-4 (DS3) line card supports three third-party DSU vendors (Digital-Link,
Kentrox, and Larscom) and Internet Service Provider (ISP)-provided DS3 lines to enable connections
between a router and another device.