With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpvlanPortModeTable
cpvlan Port Mode Table
1.3.6.1.4.1.9.9.173.1.2.3
A table containing information of the configuration of port mode for the Private VLAN feature.
Back to CISCO-PRIVATE-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor cpvlanPortModeTable 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.