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Configuring Asynchronous/Synchronous Serial Network Modules or WAN Interface Cards
Timesaver
Before you begin, disconnect all WAN cables from the router to keep it from trying to run the
AutoInstall process. The router tries to run AutoInstall whenever you power it ON, if there is a WAN
connection on both ends and the router does not have a valid configuration file stored in nonvolatile
random-access 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
Step 1
Router> enable
Password: password
Router#
Step 2
Router# configure terminal
Enter configuration commands, one per line.
End with CNTL/Z.
Router(config)#
Step 3
Router# ip routing
Router# appletalk routing
Router# ipx routing
Step 4
Router(config)# interface serial 0/0
Router(config-if)#
Step 5
Router(config-if)# ip address 172.16.74.1
255.255.255.0
Step 6
Router(config-if)# appletalk static
cable-range 5-5
Router(config-if)# appletalk zone ZZSerial
Router(config-if)# ipx network B003
Step 7
Router(config-if)# physical-layer async
Step 8
Router(config-if)# async mode dedicated
Router(config-if)# async default routing
Step 9
Router(config-if)# line async <#>
Step 10
Router(config-if)# half-duplex timer
dcd-drop-delay 100
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
3-6
Chapter 3
Configuring with the Command-Line Interface
Purpose
Enter enable mode. Enter the password.
You have entered enable mode when the prompt
changes to
.
Router#
Enter global configuration mode. You have
entered global configuration mode when the
prompt changes to
Router(config)#.
Enable routing protocols as required for your
global configuration. This example uses IP
routing, AppleTalk routing, and Internetwork
Packet Exchange (IPX) routing.
Enter the interface configuration mode. You have
entered interface configuration mode when the
prompt changes to
Router(config-if)#.
Assign the IP address and subnet mask to the
interface.
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.
All serial ports are initially configured as
synchronous. Enter this command if you want to
configure the port as asynchronous.
Configure asynchronous parameters according to
your needs.
Configure the asynchronous line setting.
Specify the time that the interface waits in
controlled carrier mode. See
half-duplex timer commands.
Table 3-1
for a list of
OL-1957-03
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