4-2
Cisco AS5350 and Cisco AS5400 Universal Gateway Software Configuration Guide
OL-3418-02 B0
Chapter 4 Continuing Configuration Using the Command-Line Interface
Configuring Synchronous Serial Interfaces for WAN Support
Configuring Synchronous Serial Interfaces for WAN Support
Configure the synchronous serial interfaces on the motherboard to connect to a WAN through a
CSU/DSU.
This section describes how to enable the serial interface, specify IP routing, and set up external clock
timing on a DCE or DTE interface. To use a port as a DTE interface, you need only connect a DTE
adapter cable to the port. When the system detects the DTE mode cable, it automatically uses the external
timing signal. To use a port in DCE mode, you must connect a DCE interface cable and set the clock
speed with the clock rate configuration command. You must also set the clock rate to perform a loopback
test.
Configure
Command Purpose
Step 1
AS5350> enable
Password: password
AS5350#
Enters enable mode (also called privileged EXEC
mode) and enter the password. You are in enable
mode when the prompt changes to
AS5350# or
AS5400#.
Step 2
AS5350# configure terminal
Enter configuration commands, one per line.
End with CNTL/Z.
AS5350(config)#
Enters global configuration mode. You are in
global configuration mode when the prompt
changes to
AS5350(config)# or
AS5400(config)#.
Step 3
AS5350(config)# interface serial 0/0
Specifies the first interface to be configured.
Step 4
AS5350(config-int)# ip address
172.22.4.67 255.255.255.0
If IP routing is enabled, assigns an IP address and
subnet mask to the interface.
Step 5
AS5350(config-int)# clock rate 2015232
Configures the external clock signal only if you
are configuring a DCE interface. The available
options include 1200, 2400, 4800, 9600, 14400,
19200, 28800, 38400, 56000, 64000, 128000, and
2015232.
Step 6
AS5350(config-int)# no shutdown
Changes the shutdown state to up and enables the
interface.
Step 7
AS5350(config-controller)# Ctrl-Z
AS5350#
Returns to enable mode.
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