With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
lldpXMedRemSerialNum
lldp X Med Remote Serial Num
1.0.8802.1.1.2.1.5.4795.1.3.3.1.4
The vendor-specific serial number as advertised by the remote endpoint.
Back to LLDP-EXT-MED-MIB MIB page.
IPHost Network monitor allows you to monitor lldpXMedRemSerialNum 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.