Afar AR-24010E, Operator'S Manual

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pulsAR radio Operator's Manual
encryption
mode=off or des-56 or 3-des-112 or aes-128 or aes-256
Selects the encryption algorithm applied to all user data packets transmitted over-the-air. All
units support the
des-56 mode. The other modes may be blocked, you can use the “>help
encryption” command to find which modes are available in your unit.
When using encryption you must set all units in the network to the same mode and enter the
same key. The number at the end of each mode name is the length, in bits, of the key used in
that encryption mode.
key=XXXX-XXXX-XXXX-XXXX-…
key-phrase=<string>
You can enter the key using hexadecimal digits in groups of 4 separated by optional dashes.
The table below shows the number of hexadecimal digits required for each mode.
Table 4.1: Encryption key lengths
DES-56 3-DES-112 AES-128 AES-256
Key length (bits) 56 112 128 256
Hexadecimal digits 16 32 32 64
In the DES modes the least significant bit of each key byte is a parity bit. Therefore each byte
contributes only 7 bits to the key length. You do not need to enter the key with the correct
(odd) parity, the software will enforce that and echo back the key with the correct parity.
The key-phrase parameter provides an alternate way for entering a key. You can enter any
ascii string of up to 80 characters and the radio will generate a pseudo-random key of the
appropriate length. The key phrase may have spaces but you need to put it in quotes. Note that
the key-phrase is not stored in the radio configuration, only the generated key.
Example:
> encryption aes128 key-phrase=”Acronym For Afar Radios”
ethernet
speed=auto-10 or 10hdx or 10fdx or 100hdx or 100fdx or auto or off
Sets the ethernet port speed to a combination of 10 or 100 Mbps, half or full duplex, or auto
negotiate.
In installations requiring a very long outdoor CAT5 cable, operation at 100 Mbps may become
unreliable. For this reason the
auto-10 setting forces the speed to 10Mbps but negotiates the
half vs full duplex setting. The auto setting (default) negotiates both the speed and duplex to
the fastest configuration supported by the other device on the Ethernet. With either of the auto
settings the radio also detects and crosses over the Tx and Rx signal pairs, if necessary. This
automatic cross-over feature is disabled in the non-auto settings.
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