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4. At both ends of the link enter ether an 128-bit or 256-bit encryption key. Note the key
consists of 32/64 case insensitive hexadecimal characters. The same Key must be
entered at both ends of the link. Failure to enter the same key will cause the link to
fail.
5. Submit configuration on both ends of the link, but do not reboot.
6. Reboot both ends of the link (Figure 125). The software is designed to allow five
seconds so that a user can command both ends of the link to reboot before the
wireless link drops.
15.2 Wireless Link Encryption FAQ
15.2.1 Encryption data entry fields are not available
Check that the correct license key has been inserted into the unit. The current license key is
displayed on the 'License Key' data entry page.
15.2.2 Link fails to bridge packets after enabling link encryption
If the wireless link status on the status web page indicates that the link is 'Searching', and you
can browse to the local end of the link but not to the remote end, then check that the same
encryption algorithm and key have been entered at both ends of the link. Failure to enter the
same algorithm and key will result in received packets not being decrypted correctly.
15.2.3 Loss of AES following downgrade
When downgrading (using Recovery software image 05-01 onwards) to an earlier version of
software that does not support AES, the unit will indicate that the region code is invalid. The
user will be required to re-install correct software (supplied when AES key was activated) and
reboot the unit.
Figure 125 - Configuration Reboot Screen
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15 AES Encryption Upgrade
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