Specifications

4-14 Cisco Multiport Router Installation and Configuration Guide
Configuring the Router
Entering this command saves the configuration settings that the setup process
created in the router. If you fail to do this, the configuration is lost the next time
the router is loaded.
Setting Asynchronous Serial Ports
The ports you plan to use as low-speed asynchronous serial ports must be reconfigured after
the initial setup because the ports are initially configured as low-speed synchronous serial
ports.
Take the following steps to configure a synchronous serial port to be an asynchronous serial
port:
Step 1 Connect a terminal by following the instructions in the section “Connecting the
Console Terminal and Modem” in the chapter “Installing the Router” and then
power up the router.
Step 2 Enter the config terminal command at the enable prompt to enter configuration
mode:
router# config terminal
You can now make changes to the configuration. Press Ctrl-Z to exit configuration
mode.
Step 3 Enter the interface command to select the port you are configuring:
interface serial 2
Step 4 Enter the physical-layer command to change the port to asynchronous:
physical-layer async
Step 5 Enter the IP address, the asynchronous mode, and routing method:
ip address 172.16.2.2 255.0.0.0
async mode dedicated
async default routing