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The 802.11 radio profiles support basic modulation and transmission rates. The 802.11g basic modulation
rates determine the 802.11b/g rates for the data that are advertised in beacon frames and probe response
and 802.11g transmission rates determine the 802.11b/g rates at which the IAP can transmit data.
For 802.11n clients, you can now configure an HT MCS rate set so that the SSID does not broadcast the
disabled MCS rates list.
For 802.11ac clients, only 10 MCS rates supported in the 802.11ac mode and IAPs use a combination of VHT
MCSs and spatial streams to convey the supported MCS rates.
In the Instant 6.4.3.4-4.2.1.0 release, the modulation rates can be configured only through the IAP CLI.
To configure modulation rates:
(Instant AP)# config terminal
(Instant AP)(config)# wlan ssid-profile <ssid_profile>
(Instant AP)(SSID Profile "<ssid_profile>")# a-basic-rates 6 9 12 18
(Instant AP)(SSID Profile "<ssid_profile>")# a-tx-rates 36 48 54
(Instant AP)(SSID Profile "<ssid_profile>")# supported-mcs-set 1,3,6,7
(Instant AP)(SSID Profile "<ssid_profile>")# vht-support-mcs-map 7, 9, 8
(Instant AP)(SSID Profile "<ssid_profile>")# end
(Instant AP)# commit apply
Multi-User-MIMO
The Multi-User Multiple-Input Multiple-Output (MU-MIMO) feature allows the 802.11ac Wave 2 IAPs to send
multiple frames to multiple clients simultaneously over the same frequency spectrum. With MU-MIMO, IAPs
can support simultaneous directional Radio Frequency (RF) links and up to four simultaneous full-rate Wi-Fi
connections (For example, smart phone, tablet, laptop, multimedia player, or other client device).
The MU-MIMO feature is enabled by default on WLAN SSIDs to allow IAPs to use the MU beamformer bit in
beacon frames to broadcast to clients. When disabled, the MU beamformer bit is set to unsupported.
Enabling or Disabling MU-MIMO
The MU-MIMO feature is enabled by default on WLAN SSIDs. To disable this feature:
(host)(config)# wlan ssid-profile <ssid_profile>
(host)(SSID Profile "<ssid_profile>")# vht-mu-txbf-disable
(host)(SSID Profile "<ssid_profile>")# end
(host)# commit apply
To re-enable MU-MIMO:
(host)(config)# wlan ssid-profile <ssid_profile>
(host)(SSID Profile "<ssid_profile>")# no vht-mu-txbf-disable
(host)(SSID Profile "<ssid_profile>")# end
(host)# commit apply
RTS/CTS Flow Control
The (Request to Send) RTS /(Clear to Send) CTS mechanism allows devices to reserve the RF medium and
minimize the frame collisions introduced by hidden stations. When RTS is enabled, a higher number of
retransmissions occurring on the WLAN triggers the RTS/CTS handshake and the transmitter station sends an
RTS frame to the receiver station. The receiver station responds with a CTS frame. The RTS/CTS frames are sent
only when the packet size exceeds the RTS threshold. By default, the RTS threshold is set to 2333 octets.
Configuring RTS/CTS Threshold
You can set the RTS/CTS threshold value within the range of 0–2347 octets. By default, the RTS/CTS threshold
is set to 2333.
Aruba Instant 6.5.0.0-4.3.0.0 | User Guide
Wireless Network Profiles |
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