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Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0
Chapter3 Starting and Configuring Configuring a Cisco7401ASR Router
Performing a Basic Configuration Using AutoInstall The AutoInstall process is designed to configure the Cisco7401ASR router automatically after
connection to your WAN. For AutoInstall to work properly, a TCP/IP host on your network must be
preconfigured to provide the required configuration files. The TCP/IP host may exist any wher e on the
network as long as the following two conditions are maintained:
1. The host must be on the remote side of the router synchronous serial connection to the WAN.
2. User Datagram Protocol (UDP) broadcasts to and from the router and the TCP/ I P host are enabled.
This functionality is coordinated by your system administrator at the site where the TCP/IP host is
located. You should not use AutoInstall unless the required files are available on the TCP/IP host. Refer
to the publications Cisco IOS Configuration Fundamentals Configuration Guide and Cisco IOS
Configuration Fundamentals Command Reference for information about how AutoInstall works.
Complete the following steps to prepare your Cisco 7401ASR router f or t he A uto Insta ll pr oc ess:
Step1 Attach the appropriate synchronous serial cable to synchr ono us s eria l in te rface 0 on the router.
Step2 Turn the power switch on the power supply to the on (|) position. (This action turns on AC power to the
router.)
Note After powering off the router, wait at least 30 seconds before powering it on again.
The router loads the operating system image from Flash memory. If the remote end of the WAN
connection is connected and properly configured, the AutoInstall process begins.
Once the AutoInstall process is completed, use the copy running-config startup-config command to
write the configuration data to the router’s nonvolatile random-access memory (NVRAM). Perform the
following step to complete this task.
Step3 At the # prompt, enter the following command:
Hostname# copy running-config startup-config
Note Completing Step 3 saves the configuration settings that the AutoInstall process created to NVRAM. If
you fail to do this, your configuration will be lost the next time you reload the router.
Performing a Basic Configuration Using the Setup Facility If you do not plan to use AutoInstall, do not connect th e ro uter ’s serial (WAN) cable to the channel
service unit/data service unit (CSU/DSU). If the WAN cable is not connected, the router boots from
Flash memory and goes automatically into the setup facility.
Note You can run the setup facility any time you are at the e nabl e pro mpt (#) b y e nteri ng th e setup command.