C
HAPTER
7
| Wireless Configuration
Advanced Settings
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the CWMin value. Specify the CWMin value in the range 0-15
microseconds. Note that the CWMin value must be equal or less than
the CWMax value.
◆ CWMax (Maximum Contention Window) — The maximum upper limit
of the random backoff wait time before wireless medium access can be
attempted. The contention window is doubled after each detected
collision up to the CWMax value. Specify the CWMax value in the range
0-15 microseconds. Note that the CWMax value must be greater or
equal to the CWMin value.
◆ Txop (Transmit Opportunity Limit) — The maximum time an AC
transmit queue has access to the wireless medium. When an AC queue
is granted a transmit opportunity, it can transmit data for a time up to
the TxOpLimit. This data bursting greatly improves the efficiency for
high data-rate traffic. Specify a value in the range 0-65535
microseconds.
◆ ACM — The admission control mode for the access category. When
enabled, clients are blocked from using the access category.
(Default: Disabled)
◆ AckPolicy — By default, all wireless data transmissions require the
sender to wait for an acknowledgement from the receiver. WMM allows
the acknowledgement wait time to be turned off for each Access
Category (AC) 0-3. Although this increases data throughput, it can also
result in a high number of errors when traffic levels are heavy.
(Default: Acknowledge)
MULTICAST-TO-
UNICAST CONVERTER
The Multicast-to-Unicast Converter section on the Wireless Settings
Advanced page allows you to enable multicast traffic conversion.
Converting multicast traffic to unicast before sending to wireless clients
allows a longer DTIM (Data Beacon Rate) interval to be set. A longer DTIM
interval prevents clients in power-save mode having to activate their radios
to receive the multicast data, which saves battery life.
Figure 40: Multicast-to-Unicast Converter
The following items are displayed in this section on this page:
◆ Multicast-to-Unicast — Enables multicast traffic streams to be
converted to unicast traffic before delivery to wireless clients.
(Default: Disabled)
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