Nortel Networks 14.2 manual Startup Options, Router Startup Files

Understanding Tools and Options

Nortel Networks ships the software image for AN/ANH and ARN routers on a PCMCIA flash memory card, along with a default configuration file named config. The ARN software image is named arn.exe. The AN/ANH software image is named an.exe. Table 1-1 describes the executable startup files contained in the AN/ANH and ARN software images.

Table 1-1.	Router Startup Files
Startup File Name		Description
krnl_arn.exe		ARN operating-system kernel
krnl_an.exe		AN/ANH operating-system kernel
Application files		Executable files needed to perform the functions specified in the
		configuration file. All application files have .exe file-name
		extensions. (For example, the router needs an ipx.exe executable
		file to run IPX.)
String files		Compressed ASCII files needed when you use the Nortel Networks
		Technician Interface to display the event log or MIB object names.
		Groups of string files remain in compressed format until needed.

Startup Options

A router obtains the software image and configuration files that you want it to use during startup.

Startup options allow AN/ANH and ARN routers to retrieve startup files either over the network or from the file system stored in local flash memory. Obtaining startup files from the router file system is called local booting. Obtaining one or more startup files over the network is called network booting, or netbooting.

You use one of four boot options to complete a startup procedure. Table 1-2 summarizes these startup options. “The Boot Process” on page 1-5 describes how local and network booting works.

For initial startup, AN/ANH and ARN routers are configured for a default option, but you can change the default (see “Preparing for the Initial Startup” on

page 1-13). To select the startup option for routine operation, see “Selecting the Routine Startup Option” on page 1-16. To review the steps for configuring and completing a startup option, see “Steps for Completing Startup Options” page 1-18.

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