Quidway WB2011, Руководство пользователя

Страница: 133 / 157

Wireless Interface Commands
6-53
6
Command Usage
• If the threshold is set to 0, the wireless bridge never sends RTS signals. If
set to 2347, the wireless bridge always sends RTS signals. If set to any
other value, and the packet size equals or exceeds the RTS threshold, the
RTS/CTS (Request to Send / Clear to Send) mechanism will be enabled.
• The wireless bridge sends RTS frames to a receiving remote bridge to
negotiate the sending of a data frame. After receiving an RTS frame, the
remote bridge sends a CTS frame to notify the local bridge that it can start
sending data.
• Wireless bridges contending for the wireless medium may not be aware of
each other. The RTS/CTS mechanism can solve this “Hidden Node”
problem.
Example
encryption
This command defines whether WEP or AES encryption is used to provide privacy
for wireless communications. Use the
no form to disable encryption.
Syntax
encryption { wep < key-length > | wdsaes < alphanumeric | hex >}
no encryption
• wep - The keyword that enables WEP encryption.
- key-length - Size of encryption key. (Options: 64, 128, or 152 bits)
• wdsaes - The keyword that enables 128-bit AES encryption.
- alphanumeric - Specifies an encryption key entered as an alphanumeric
string.
- hex - Specifies an encryption key entered as hexadecimal digits.
Default Setting
disabled
Command Mode
Interface Configuration (Wireless)
Command Usage
• Wired Equivalent Privacy (WEP) and Advanced Encryption Standard (AES)
are implemented in this device to prevent unauthorized access to your
network. For more secure data transmissions, enable WEP or AES
encryption with this command, and set at least one key with the
key
command.
• AES has been designated by the National Institute of Standards and
Technology as the successor to the Data Encryption Standard (DES)
encryption algorithm, and will be used by the U.S. government for
Outdoor Bridge(if-wireless a)#rts-threshold 256
Outdoor Bridge(if-wireless a)#