
Troubleshooting Network Boot Problems
A-13
You can place these files in any directory you want. The Image Builder
automatically generates the kernel image and application files when you open
the software image file. By default, the Image Builder stores these files in the
/$HOME/.builder_dir/rel<rel>/an (or asn) directory, where <rel> is the
current router software release for the ASN.
For example, Version 3.00 of the Site Manager’s Image Builder tool stores the
Version 9.00 files in the /$HOME/.builder_dir/rel900/asn directory.
2. Make sure that the ASN extracts the kernel image and all of the
application and string files from the same software image.
If these files are from different software versions, the ASN may fail to boot or
operate properly.
3. Make sure that the bootptab file is in the /etc directory.
4. Make sure that the bootptab file contains the following entries:
general:\
:hd=/$HOME/.builder_dir/rel900/asn:\
:bf=krnl_asn.exe:\
:bs=auto:\
:vm=rfc1048:
Note that /$HOME/.builder_dir/rel900/asn is the location of the
kernel and all application and string files.
5. Make sure that the bootptab file contains a definition for the particular
ASN that is failing to Netboot.
6. Make sure that the configuration filename and path are correct in the
bootptab file.
For example, the following bootptab line indicates that the configuration file
named ASN_Bost.cfg is in the /rte3/cfg directory path:
T129="/rte3/cfg/ASN_Bost.cfg"
7. Read the bootptab file carefully for misspellings or other errors.
Compare it to the sample file shown in Chapter 2 (Figure 2-1).
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