With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vtpVlanEditIsCRFBackup
vtp Vlan Edit Is CRF Backup
1.3.6.1.4.1.9.9.46.1.4.2.1.17
True if this VLAN is of type trCrf and also is acting as a backup trCrf for the ISL distributed BRF. This object is only instantiated when the value of the corresponding instance of vtpVlanEditType has a value of tokenRing(3).
Back to CISCO-VTP-MIB MIB page.
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