With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alDhcpStatsSessClientId
ALTIGA Dhcp Statistics Session Client Id
1.3.6.1.4.1.3076.2.1.2.20.2.1.9
The full 'client ID' value associated with this lease.
Back to ALTIGA-DHCP-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alDhcpStatsSessClientId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.