Troubleshooting Network Boot Problems
Maintaining the Router Software
The AN/ANH or ARN router file system resides on the flash memory card, which is not user serviceable.
You use Technician Interface commands to maintain the local file system on the AN/ANH or ARN router flash memory card. For more information, see Using Technician Interface Software and Using Technician Interface Scripts.
Caution: Be very careful when you use the format command. This command erases all files on the local flash memory card, and the AN/ANH or ARN router will not be able to
When Technician Interface commands require that you specify a volume, always specify volume 1 for an AN/ANH or ARN router.
Upgrading the Software Image
You can upgrade an AN/ANH or ARN router’s kernel file (krnl_an.exe for the AN/ANH or krnl_arn.exe for the ARN) using one or both of the following options:
•Use Netboot to start the router.
This option upgrades the image only in the router’s RAM.
•Use TFTP to transfer the image to the router’s flash memory card, then use Local Boot to start the router.
This option upgrades the image in both the router’s flash memory card and in RAM.
Caution: If you use TFTP to transfer an upgraded image to an AN/ANH or ARN router flash memory card, and the file transfer is interrupted (for example, if the router resets, reboots, or loses power), the router’s local file system on the flash memory card becomes corrupted and the router cannot boot locally until you restore the file system.
