User's Manual

Configuration Parameters 14
Advanced Settings
Supported Rates
By default, Access Points will support all data rates. The IEEE 802.11a specification
supports eight data rates: 54 Mbps, 48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps, 9
Mbps, and 6 Mbps. Harmony’s 2X mode supports eight data rates: 108 Mbps, 96
Mbps, 72 Mbps, 48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, and 12 Mbps.
RTS/CTS
The 802.11a standard supports optional RTS/CTS communication based on packet
size. Without RTS/CTS, a sending radio listens to see if another radio is already using
the medium before transmitting a data packet. This helps to minimize collisions.
You may configure a Harmony 802.11a AP to never use RTS/CTS or to use RTS/CTS for
packets over a certain size. The RTS/CTS Threshold parameter supports a range
between 1 and 2345 Bytes. When set to 1, a sending radio will use RTS/CTS before
transmitting any packet. By default, RTS/CTS is disabled.
2X Mode
By default, 2X Mode is disabled. 2X mode is a high-speed mode to achieve data rates
of up to 108 Mbps, twice the speed of standard 802.11a devices. When 2X Mode is
disabled, Harmony 802.11a devices comply with the IEEE 802.11a standard and can
operate on one of four Channels, achieving speeds of up to 54 Mbps. When 2X Mode is
enabled, Harmony 802.11a devices do not comply with the IEEE 802.11a standard, can
operate on one of two Channels, and can achieve speeds of up to 108 Mbps.
Note: You must configure all devices in the same network to use 2X mode. A device
in 2X mode cannot communicate with a device in 802.11a mode.
AP.book Page 14 Wednesday, October 3, 2001 4:12 PM