
Understanding Tools and Options
117341-A Rev. A 1-3
Bay Networks ships the software image for a BayStack router 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.
T
able 1-1 describes the executable startup files contained in the AN/ANH and
ARN software images.
Startup Options
A router obtains the software image and configuration files that you want it to use
during startup.
Startup options allow a BayStack router 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. T
able 1-2
summarizes the four startup options. “T
he Boot Process” on page 1-5 describes
how local and network booting works.
For initial startup, the BayStack router is configured for a default option, but you
can change the default (see “Pr
eparing for the Initial Startup” on page 1-13). See
“Selecting the Routine Star
tup Option” on page 1-16 to select the startup option
for routine operation. See “Ste
ps for Completing Startup Options” page 1-18 to
review the steps for configuring and completing a startup option.
Table 1-1. BayStack 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 Technician
Interface to display the event log or MIB object names. Groups of
string files remain in compressed format until needed.
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