With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
lecProxyClient
Lan Emulation Client Proxy Client
1.3.6.1.4.1.353.5.3.1.1.2.1.16
C4 Proxy. Indicates whether this client is acting as a proxy. Proxy clients are allowed to represent unregistered MAC addresses, and receive copies of LE_ARP_REQUEST frames for such addresses.
Back to LAN-EMULATION-CLIENT-MIB MIB page.
IPHost Network monitor allows you to monitor lecProxyClient on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.