ADTRAN AOS Version R10.1.0 Command Reference Manual page 2831

Command Reference Guide
short-slot-time
Use the short-slot-time command to enable short slot time (9 microseconds) for an 802.11bg radio. Use
the no form of this command to return to the long slot time (20 microseconds).
This command is only available on the 802.11bg radio interface.
Syntax Description
No subcommands.
Default Values
By default, short-slot-time is enabled.
Short slot time is used only when the wireless network contains strictly 2.4 GHz, 802.11g
devices and all of those devices support short slot time. If not all 802.11g devices support
short slot time or the wireless network contains both 802.11b and g radios and/or clients,
the radio automatically reverts to standard slot time.
Command History
Release 15.1
Functional Notes
Slot time is the amount of time a wireless device waits after a collision before retransmitting a packet. The
standard slot time of 20 microseconds is used in 2.4 GHz, 802.11b and 802.11bg networks. If a wireless
network is strictly 802.11g and all devices are capable of supporting the feature, short slot time
(9 microseconds) can be enabled. Short slot time increases throughput by decreasing the backoff time
calculated by the transmitting device when a collision occurs.
Usage Examples
The following example specifies use of long slot time for 802.11g exclusive networks on an 802.11bg
wireless radio:
(config)#interface dot11ap 1/1 radio-type 802.11bg
(config-dot11ap 1/1-bg)#no short-slot-time
60000CRG0-35E
Command was introduced.
Copyright © 2012 ADTRAN, Inc.
Radio Interface Command Set
2831