H3C Technologies H3C Intelligent Management Center - Manual (Page 146)

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On the 802.11g Configuration tab, operators can set 1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps,
9 Mbps, 11 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps, and 54 Mbps rates
of the Supported Rate, Mandatory Rate, or Disabled Rate type.
6. Select a rate type to set corresponding rates.
7. Click OK.
Configuring MCS
Configuration of mandatory and supported 802.11an or 802.11gn rates is achieved by specifying the
maximum Modulation and Coding Scheme (MCS) index. The MCS data rate table shows relations
between data rates, MCS indexes, and parameters that affect data rates.
802.11 rates fall into the following three types:
• Mandatory rates
• Supported rates
• Multicast rates.
WSM supports mandatory rates and supported rates.
To configure MCS:
1. Click the Service tab.
2. From the navigation tree, select WLAN Manager > Resource Management > ACs. The AC List
page displays all ACs.
3. Click the device label of the target AC.
4. Click the MCS Set Configuration link in the RRM Management area to the right of the page.
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Max Index of Mandatory MCS Set—Enter the maximum mandatory MCS. Fit APs must
support mandatory rates. Clients can only associate with the fit APs when they support the
mandatory rates.
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Max Index of Support MCS Set—Enter the supported maximum MCS. It cannot be smaller
than the mandatory maximum MCS. These are 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.
5. Click OK.
NOTE:
The MCS Set Configuration link is visible only when the AC supports 802.11an or 802.11gn.
Managing AC groups
WSM uses a primary/secondary mechanism to guarantee high availability. You can add two or
more ACs to one AC group and configure one or more ACs to operate in primary state. Other ACs
operate in secondary state.
If a primary AC goes down, a secondary AC immediately takes over the role of the primary AC.
ACs in the same AC group back up each other. Every AC in the group works actively and serves as
the secondary AC the others. The primary and secondary ACs have the same configuration.