Cisco WAP131 Administration Manual page 79

Wireless
Radio
Cisco WAP131 and WAP351 Administration Guide
Some channel ranges and country code combinations have relatively low
maximum transmit power. When attempting to set the transmit power to the
lower ranges (for example, 25 percent or 12 percent), the expected drop in
power may not occur, because certain power amplifiers have minimum
transmit power requirements.
• Fixed Multicast Rate—The transmission rate in Mbps for broadcast and
multicast packets. This setting can be useful in an environment where the
wireless multicast video streaming occurs, provided the wireless clients are
capable of handling the configured rate.
When Auto is selected, the WAP device chooses the best rate for the
associated clients. The range of valid values is determined by the configured
radio mode.
• Legacy Rate Sets—Rates are expressed in megabits per second.
The Supported Rate Sets indicate the rates that the WAP device supports.
You can check multiple rates (check a box to select or deselect a rate). The
WAP device automatically chooses the most efficient rate based on the
factors such as error rates and the distance of client stations from the WAP
device.
The Basic Rate Sets indicate the rates that the WAP device advertises to the
network for the purposes of setting up communication with other access
points and client stations on the network. It is generally more efficient to have
a WAP device broadcast a subset of its supported rate sets.
• Broadcast/Multicast Rate Limiting—Multicast and broadcast rate limiting
can improve overall network performance by limiting the number of packets
transmitted across the network.
By default, this feature is disabled. Until you enable this feature, these fields
are disabled:
- Rate Limit—The rate limit for multicast and broadcast traffic. The limit
should be greater than 1, but less than 50 packets per second. Any traffic
that falls below this rate limit will always conform and be transmitted to
the appropriate destination. The default and maximum rate limit setting is
50 packets per second.
- Rate Limit Burst—An amount of traffic, measured in bytes, which is
allowed to pass as a temporary burst even if it is above the defined
maximum rate. The default and maximum rate limit burst setting is 75
packets per second.
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