With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdsIfVlanRelayInfoOptCircuitIdGroup
CISCO DHCP SNOOPING If Vlan Relay Info Option Circuit Id Group
1.3.6.1.4.1.9.9.380.2.2.21
A collection of objects which are used to configure as well as show circuit-id of option 82 DHCP Snooping.
Back to CISCO-DHCP-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor cdsIfVlanRelayInfoOptCircuitIdGroup 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.