Cisco Aironet CB20A Configuration Manual page 20

Setting Advanced Ad Hoc Parameters
Table 5-5
Parameter
RTS Threshold
RTS Retry Limit
Wake Duration (Kμs)
Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows
5-20
Advanced (Ad Hoc) Parameters (continued)
Description
Specifies the size of the data packet that the low-level RF protocol
issues to a request-to-send (RTS) packet.
Setting this parameter to a small value causes RTS packets to be sent
more often. When this occurs, more of the available bandwidth is
consumed and the throughput of other network packets is reduced, but
the system is able to recover faster from interference or collisions,
which may be caused from a high multipath environment
characterized by obstructions or metallic surfaces.
Range: 0 to 2312
Default: 2312
Note
Specifies the number of times the client adapter resends a
request-to-send (RTS) packet if it does not receive a clear-to-send
(CTS) packet from the previously sent RTS packet.
Setting this parameter to a large value decreases the available
bandwidth whenever interference is encountered but makes the system
more immune to interference and collisions, which may be caused
from a high multipath environment characterized by obstructions or
metallic surfaces.
Range: 1 to 128
Default: 16 (2.4-GHz client adapters) or 32 (5-GHz client adapters)
Note
Specifies the amount of time following a beacon that the client adapter
stays awake to receive announcement traffic indication message
(ATIM) packets, which are sent to the adapter to keep it awake until
the next beacon.
Refer to the Power Save Mode parameter in
Range: 0 Kμs (in CAM mode); 5 to 60 Kμs (in Max PSP or Fast PSP
Default: 5 Kμs
Note
Note
Refer to the IEEE 802.11 Standard for more information on
the RTS/CTS mechanism.
Refer to the IEEE 802.11 Standard for more information on
the RTS/CTS mechanism.
mode)
If your client adapter is set to CAM mode, you must set the
wake duration to 0 Kμs. If your client adapter is set to Max PSP
or Fast PSP mode, you must set the wake duration to a minimum
of 5 Kμs.
Kμs is a unit of measurement in software terms. K = 1024,
μ = 10
-6
, and s = seconds, so Kμs = .001024 seconds, 1.024
milliseconds, or 1024 microseconds.
Chapter 5 Configuring the Client Adapter
Table 5-2.
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