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Cisco IOS Software Configuration for the 1-Port Channelized OC-12/STM-4 (DS3) Line Card
Prerequisites for the 1-Port Channelized OC-12/STM-4 (DS3) Line Card
2
Cisco IOS Release 12.0(8)S
Prerequisites for the 1-Port Channelized OC-12/STM-4 (DS3)
Line Card
The Cisco 12000 Series Router must have at least one clock and scheduler card (CSC) installed that
provides a one-quarter bandwidth to support the requirements of the 1-port channelized OC-12/STM-4
(DS3) line card.
Information About the 1-Port Channelized OC-12/STM-4 (DS3)
Line Card
The 1-port channelized OC-12/STM-4 (DS3) line card provides 12 channels of DS3 multiplexed over a
single 622-Mbps OC-12 port. The 1-port channelized OC-12/STM-4 (DS3) line card interfaces through
an Add Drop Multiplexer (ADM) with other DS3 line cards at DS3 line rates in a configuration that
usually consists of a Cisco 7200 Series Router and a Cisco 7500 Series Router configured with the
packet-over-E3/T3 (POET) port adapter, or a third-party T3 data service unit (DSU) such as Digital Link,
Larscom, or Kentrox.
The 1-port channelized OC-12/STM-4 (DS3) line card interfaces with the Cisco 12000 Series Router
switch fabric and provides one OC-12 duplex SC single-mode intermediate-reach Synchronous Optical
Network (SONET) connection.
How to Configure the 1-Port Channelized OC-12/STM-4 (DS3)
Line Card
The following sections provide information for configuring and verifying the configuration.
• Configuring the OC-12 Controller, page 2
• Configuring the DS3 Serial Interface, page 4
• Cisco Remote Connection Management, page 5
• Using show Commands to Check System Status, page 8
• Using Loopback Commands, page 12
• Configuring DS3 Port BER Testing, page 13
Configuring the OC-12 Controller
Use the configure command to configure the new OC-12 controller. A Cisco 12000 Series Router
identifies a controller by slot/port. The current OC-12 controller-configurable parameter settings are
displayed as part of the show controller oc12 number/0 command, as in the following example:
Router# show controller oc12 1/0
OC12_CH_DS31/0
The current state of the controller is up
Current configurable parameter settings:
Clock source is LINE, Payload scrambling is ON
Loopback is NONE
Router#