NB30MIB :: nb30DeviceTopChgCnts

MIB Reference — IPNetwork Monitor · Updated September 21, 2026

All MIBs › NB30MIB › nb30DeviceTopChgCnts

nb30DeviceTopChgCnts

Module: NB30MIB

OID (symbolic): NB30MIB::nb30DeviceTopChgCnts

OID (numeric): 1.3.6.1.4.1.52.1.6.12.1.18

Node type: OBJECT-TYPE

Type: Counter

Access: read-only

Description: The number of times the bridge's Topology Change Flag has been changed since the bridge was powered up or initialized.

What is nb30DeviceTopChgCnts?

A running counter of how many times the bridge's spanning-tree Topology Change flag has toggled since it was last powered up, useful for spotting an unstable network segment causing frequent topology recalculation.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.1.6.12.1.18
snmpwalk -v2c -c public <target> NB30MIB::nb30DeviceTopChgCnts

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.1.6.12.1.18.1
snmpget -v2c -c public <target> NB30MIB::nb30DeviceTopChgCnts.1

Start monitoring NB30 bridge/DSX WAN interconnect device with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NB30MIB::nb30DeviceTopChgCnts OID value, configure state conditions and alerts, and monitor any NB30 bridge/DSX WAN interconnect device from a single console.

OID Breakdown

Upper-level ancestors (10 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.52cabletronCabletron-MIB
1.3.6.1.4.1.52.1commsDeviceCabletron-MIB
1.3.6.1.4.1.52.1.6subsystemCabletron-MIB
1.3.6.1.4.1.52.1.6.12nb30Rev1IRM-OIDS
Numeric OIDNameModule
1.3.6.1.4.1.52.1.6.12.1nb30DeviceNB30MIB
1.3.6.1.4.1.52.1.6.12.1.18nb30DeviceTopChgCntsNB30MIB