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Menus and Parameters
Operation and Administration
193
NOTE
The AU and all the SUs it serves should be configured to the same Data Encryption Option.
Mixed operation is not supported.
An SU with Data Encryption Option enabled can accept non-encrypted data frames.
When the Data Encryption Option is enabled, the maximum number of SUs that can associate
with the AU is limited to 124. The Maximum Number of Associations Limit is indicated in the
Show Air Interface Parameters display.
4.2.6.7.3 Security Mode
The Security Mode option enables selecting the algorithm to be used for
encrypting the authentication messages and/or data frames.
The available options are WEP, AES OCB and FIPS 197 (if available).
The default is WEP.
4.2.6.7.4 Default Key (SU only)
The Default Key defines the Key to be used for encrypting/decrypting the
authentication messages (Shared Key mode) and/or data frames (Data
Encryption enabled). The AU learns the Default Key from the SU provided it is
one of the Keys defined in the AU. The AU may use different keys when
authenticating and/or communicating with different SUs.
Available values range from 1 to 4.
The default is KEY # 1.
4.2.6.7.5 Default Multicast Key (AU only)
The Multicast Default Key defines the Key to be used for encrypting/decrypting
multicasts and broadcasts when Data Encryption is enabled.
Available values range from 1 to 4.
The default is KEY # 1.
4.2.6.7.6 Key # 1 to Key # 4
The Key # options enables defining the encryption key to be used for initializing
the pseudo-random number generator that forms part of the
encryption/decryption process. The Keys must be set before the Shared Key
authentication algorithm or Data Encryption can be used. To support proper
operation, both the Key # and the content must be identical at both sides of a
wireless link.
Each Key is a string of 32 hexadecimal numbers. For security reasons, it is a
“write only” parameter, displayed as a string of asterisks (“*”).
The default for all 4 Keys is 000…0 (a string of 32 zeros), which means no key.