Cisco 3725 Software Configuration Guide - Page 66

Configuring Asynchronous/Synchronous Serial Network Modules or WAN Interface Cards Chapter 3 Configuring with the Command-Line Interface memory (NVRAM) (for instance, when you add a new interface). It can take several minutes for the router to determine that AutoInstall is not connected to a remote Transmission Control Protocol/Internet Protocol (TCP/IP) host. Before you begin configuring the asynchronous/synchronous serial interface, make sure you: • Connect a console to the router. • Power on the router. Command Purpose Step 1 Router> enable Enter enable mode. Enter the password. Password: password Router# You have entered enable mode when the prompt changes to Router#. Step 2 Router# configure terminal Enter global configuration mode. You have Enter configuration commands, one per line. entered global configuration mode when the End with CNTL/Z. prompt changes to Router(config)#. Router(config)# Step 3 Router# ip routing Router# appletalk routing Router# ipx routing Enable routing protocols as required for your global configuration. This example uses IP routing, AppleTalk routing, and Internetwork Packet Exchange (IPX) routing. Step 4 Router(config)# interface serial 0/0 Router(config-if)# Enter the interface configuration mode. You have entered interface configuration mode when the prompt changes to Router(config-if)#. Step 5 Router(config-if)# ip address 172.16.74.1 Assign the IP address and subnet mask to the 255.255.255.0 interface. Step 6 Router(config-if)# appletalk static cable-range 5-5 Router(config-if)# appletalk zone ZZSerial Router(config-if)# ipx network B003 Configure routing protocols on the interface. You must have previously enabled these protocols as part of global configuration. In this example, AppleTalk and IPX are being configured on the interface. Step 7 Router(config-if)# physical-layer async All serial ports are initially configured as synchronous. Enter this command if you want to configure the port as asynchronous. Step 8 Router(config-if)# async mode dedicated Router(config-if)# async default routing Configure asynchronous parameters according to your needs. Step 9 Router(config-if)# line async Configure the asynchronous line setting. Step 10 Router(config-if)# half-duplex timer dcd-drop-delay 100 Specify the time that the interface waits in controlled carrier mode. See Table 3-1 for a list of half-duplex timer commands. Step 11 Router(config-if)# clockrate 7200 To use a port in DCE mode, connect a DCE cable and set the internal transmit clock signal (TXC) speed in bits per second. See Table 3-2 through Table 3-5 for a list of clock rate settings for your specific interface. (For ports used in DTE mode, the router automatically uses the external timing signal.) Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers 3-6 OL-1957-04