With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpvlanVlanEditPrivateVlanType
cpvlan Vlan Edit Private Vlan Type
1.3.6.1.4.1.9.9.173.1.1.2.1.1
The VLAN type as defined for Private VLAN feature. Note that a VLAN's Private VLAN type can not be changed once it already has any ports in it.
Back to CISCO-PRIVATE-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor cpvlanVlanEditPrivateVlanType 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.