With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
lldpXMedRemModelName
lldp X Med Remote Model Name
1.0.8802.1.1.2.1.5.4795.1.3.3.1.6
The vendor-specific model name as advertised by the remote endpoint.
Back to LLDP-EXT-MED-MIB MIB page.
IPHost Network monitor allows you to monitor lldpXMedRemModelName on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.