With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cD11HtPhyTxBFConfigEntry
Cisco DOT11 High-Throughput Physical Tx BF Config Entry
1.3.6.1.4.1.9.9.607.1.1.4.1
Each entry represents a conceptual row in cD11HtPhyTxBFConfigTable and corresponds to the Beamforming capabilities of an 802.11n interface.
Back to CISCO-DOT11-HT-PHY-MIB MIB page.
IPHost Network monitor allows you to monitor cD11HtPhyTxBFConfigEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.