HP ProCurve 520wl Wireless Access Point - Manual (Page 106)

Commands
Introduction to File Transfer via TFTP or HTTP
There are two methods of transferring files to or from the AP, TFTP or HTTP (or HTTPS if enabled).
The following procedures describe downloading Configuration, AP Image, Bootloader, Private Key, and Certificate files
to the AP:
•
Update AP via TFTP
• Update AP via HTTP
The following procedures describe uploading Configuration files from the AP:
•
Retrieve File via TFTP
• Retrieve File via HTTP
TFTP File Transfer Guidelines
A TFTP server must be running and configured to point to the directory containing the file.
If you do not have a TFTP server installed on your system, install the TFTP server from the CD.
HTTP File Transfer Guidelines
HTTP file transfer can be performed either with or without SSL enabled.
HTTP file transfers with SSL require enabling Secure Management and Secure Socket Layer. HTTP transfers that use
SSL may take additional time.
NOTE
SSL requires Internet Explorer version 6, 128 bit encryption, Service Pack 1, and patch Q323308.
Image Error Checking during File Transfer
The Access Point performs checks to verify that an image downloaded through HTTP or TFTP is valid. The following
checks are performed on the downloaded image:
• Zero Image size
• Large image size
• Non VxWorks image
•
AP image
• Digital signature verification
If any of the above checks fail on the downloaded image, the Access Point deletes the downloaded image and retains
the old image. Otherwise, if all checks pass successfully, the AP deletes the old image and retains the downloaded
image.
These checks are to ensure that the AP does not enter an invalid image state. The storage of the two images is only
temporary to ensure the proper verification; the two images will not be stored in the AP permanently.
Image error checking functions automatically in the background. No user configuration is required.
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