
Configuring Remote Access
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Figure 1-5. Getting the Kernel
8. The AN/ANH/ARN boots the kernel.
9. The AN/ANH/ARN uses TFTP to get application and string files as it needs
them.
10. The router begins bridging and routing network traffic in accordance with the
configuration file.
The AN/ANH/ARN can continue to request files, even after it begins bridging and
routing traffic.
If a failure occurs in Steps 1 through 8, the router attempts to boot locally.
Local Boot
When the AN, ANH, or ARN boots locally, it reads the kernel file, application
files, and string files that are embedded within a local software image file (an.exe
for the AN/ANH or arn.exe for the ARN).
Kernel
Key
BOOTP server
AN/ANH/ARN
Upstream router
Corporate backbone
NPA0005A
TFTP request
TFTP transfer
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