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Cisco Small Business WAP551 and WAP561 Wireless-N Access Point 64
5
The WAP device supports MCS indexes 0 to 23. MSC index 23 allows for a
maximum transmission rate of 450 Mbps. If no MCS index is selected, the
radio operates at MCS index 0, which allows for a maximum transmission
rate of 15 Mbps.
The MCS settings can be configured only if the radio mode includes 802.11n
support.
• 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, the Multicast/Broadcast Rate Limiting option is disabled. Until you
enable Multicast/Broadcast Rate Limiting, 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.
• TSPEC Mode—Regulates the overall TSPEC mode on the WAP device. By
default, TSPEC mode is off. The options are:
- On—The WAP device handles TSPEC requests according to the TSPEC
settings you configure on the Radio page. Use this setting if the WAP
device handles traffic from QoS-capable devices, such as a Wi-Fi
CERTIFIED phone.
- Off—The WAP device ignores TSPEC requests from client stations. Use
this setting if you do not want to use TSPEC to give QoS-capable devices
priority for time-sensitive traffic.
• TSPEC Voice ACM Mode—Regulates mandatory admission control (ACM)
for the voice access category. By default, TSPEC Voice ACM mode is off.
The options are:
- On—A station is required to send a TSPEC request for bandwidth to the
WAP device before sending or receiving a voice traffic stream. The WAP
device responds with the result of the request, which includes the
allotted medium time if the TSPEC was admitted.