Configuring Remote Access for AN and Passport ARN Routers
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•A TFTP server that contains the kernel file (krnl_arn.exe for the ARN or
krnl_an.exe for the AN/ANH) or a network configuration file customized for
the AN/ANH or ARN router
Compared with Netboot, Directed Netboot offers the following advantages:
•Creates less network traffic
•Is generally faster
Directed Netboot is usually reserved for starting AN/ANH and ARN routers after
the initial startup because you need to know the exact location of the startup files.
During Directed Netboot, AN/ANH and ARN routers transfer files from a TFTP
server directly, bypassing negotiation with a BootP server for the IP address and
path names of the startup files.

Local Boot

Local-booting the startup files for routine startups allows you to:
•Minimize the time it takes the router to boot
In most configurations, however, the difference between the two options is
only a few seconds. Typically, local-booting takes two to three minutes.
•Minimize line usage
Obtaining files locally prevents an increase in network traffic durin g the
startup process.
When you choose the Local Boot option for routine startups, AN/ANH and ARN
routers read the IP addresses from the local configuration file and assign them to
the appropriate interfaces.
Steps for Completing Startup Options
This section summarizes the steps for comp leting these startup options:
•EZ-Install
•Netboot
•Directed Netboot
•Local Boot