Client link is now called beam forming in the 7.2 release.
This can be done via cli of the wlc only.
Currently the only way to enable Beamforming (Client-Link) on 7.2 is to use
the below CLI command
config {802.11a | 802.11b} beamforming global {enable | disable}
Please see below on how to configure this via the cli of the wlc:
config 802.11 beamforming
To enable or disable beamforming on the network or on individual radios, enter the config 802.11 beamforming command.
config 802.11{a | b} beamforming {global | ap ap_name} {enable | disable}
Usage Guidelines
When you enable beamforming on the network, it is automatically enabled for all the radios applicable to that network type.
Follow these guidelines for using beamforming:
*Beamforming is supported only for legacy orthogonal frequency-division multiplexing (OFDM) data rates (6, 9, 12, 18, 24, 36, 48, and 54 mbps).
NoteBeamforming is not supported for complementary-code keying (CCK) data rates (1, 2, 5.5, and 11 Mbps).
*Beamforming is supported only on access points that support 802.11n (AP1250 and AP1140).
*Two or more antennas must be enabled for transmission.
*All three antennas must be enabled for reception.
*OFDM rates must be enabled.
If the antenna configuration restricts operation to a single transmit antenna, or if OFDM rates are disabled, beamforming is not used.
Examples
This example shows how to enable beamforming on the 802.11a network:
> config 802.11a beamforming global enable
This is absent from 7.2 configuration guide and release notes
