H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 115)

103
MCS index
Number of spatial
streams
Modulation
Data rate (Mbps)
800ns GI
400ns GI
9 2 QPSK 54.0 60.0
10 2 QPSK 81.0 90.0
11 2 16-QAM 108.0 120.0
12 2 16-QAM 162.0 180.0
13 2 64-QAM 216.0 240.0
14 2 64-QAM 243.0 270.0
15 2 64-QAM 270.0 300.0
802.11 rates fall into three types: mandatory rates, supported rates, and multicast rates.
• Mandatory rates—Mandatory rates must be supported by the AP. Clients can associate with the AP
only when they support the mandatory rates.
• Supported rates—Higher rates supported by the AP besides the mandatory rates. Supported rates
allow some clients that support both mandatory and supported rates to choose higher rates when
communicating with the AP.
• Multicast rates—Multicast rates supported by the AP besides the mandatory rates. Multicast rates
allow clients to sent multicast traffic at the multicast rates.
When you specify the maximum MCS index, you actually specify a range. For example, if you specify
the maximum MCS index as 5 for mandatory rates, rates corresponding to MCS indexes 0 through 5 are
configured as 802.11n mandatory rates.
To configure 802.11n rates:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter RRM view. wlan rrm N/A
3. Specify the maximum MCS
index for 802.11n
mandatory rates.
dot11n mandatory maximum-mcs
index
Optional.
No maximum MCS index is
specified for 802.11n
mandatory rates by default.
4. Specify the maximum MCS
index for 802.11n supported
rates.
dot11n support maximum-mcs index
Optional.
By default, the maximum MCS
index for 802.11n supported
rates is 76.
5. Specify the MCS index for
802.11n multicast rates.
dot11n multicast-rate index
Optional.
By default, the MCS index for
802.11n multicast rates is not
specified.
NOTE:
If you configure the client dot11n-only command for a radio, you must configure the maximum MCS
index for 802.11n mandatory rates.