With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vlanStatsExtendedVlans
vlan Stats Extended Vlans
1.3.6.1.4.1.9.9.46.1.10.2
This object indicates the number of the existing manageable VLANs with VLAN indices greater than 1024 in the system.
Back to CISCO-VTP-MIB MIB page.
IPHost Network monitor allows you to monitor vlanStatsExtendedVlans 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.