Cisco AS5300 - Universal Access Server, Software Configuration Manual, Page: 42 / 198

Configuring Synchronous Serial Interfaces for WAN Support
Cisco AS5300 Universal Access Server Software Configuration Guide 3-8
Configuring Synchronous Serial Interfaces for WAN Support
Configure the synchronous serial interfaces on the E1 or T1 PRI card 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.
Note The four serial interfaces each support a clock rate of 2 Mbps; you can support a rate of
8 Mbps on serial interface 0 by shutting down the other three interfaces using the e2-clockrate
command on serial interface 0.
Configure
Table 3-6 Configuring Serial Interfaces
Step Command Purpose
1
5300> enable
Password: <password>
5300#
Enter enable mode (also called
privileged EXEC mode).
Enter the password.
You have entered enable mode when the
prompt changes to
5300#
.
2
5300# configure terminal
Enter configuration commands, one per line. End
with CNTL/Z.
5300(config)#
Enter global configuration mode. You
have entered global configuration mode
when the prompt changes to
5300(config)#.
3
5300(config)# interface serial 0
Specify the first interface to be
configured.
4
5300(config-int)# ip address 145.22.4.67
255.255.255.0
If IP routing is enabled, assign an IP
address and subnet mask to the interface.
5
5300(config-int)# clock rate 2015232
Configure 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.
6
5300(config-int)# no shutdown
Change the shutdown state to up and
enable the interface.
7
5300(config-controller)# Ctrl-Z
5300#
%SYS-5-CONFIG_I: Configured from console by
console
Return to enable mode.
This message is normal and does not
indicate an error.