With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cqvTranslationInternalPeVlanId
cqv Translation Internal Pe Vlan Id
1.3.6.1.4.1.9.9.445.1.2.1.1.1
The QinQ outer VLAN ID of an internal double tagged frame. This object will have the value of zero as described in the cqvTranslationType object.
Back to CISCO-QINQ-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor cqvTranslationInternalPeVlanId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.