With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
busClientId
Cisco BUS Client Id
1.3.6.1.4.1.9.9.40.1.2.1.1
A unique identifier for a LEC which is establishing/ has-established a multicast send VC to the BUS. The identifier only persists for as long as the LEC is associated with this particular BUS. If the LEC is dropped and rejoins the ELAN then a new identifier may be attributed to it.
Back to CISCO-BUS-MIB MIB page.
IPHost Network monitor allows you to monitor busClientId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.