NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB :: nnMstBridgeInstanceDownCount

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB › nnMstBridgeInstanceDownCount

nnMstBridgeInstanceDownCount

Module: NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB

OID (symbolic): NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB::nnMstBridgeInstanceDownCount

OID (numeric): 1.3.6.1.4.1.45.5.5.1.2.1.11

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The number of times a spanning tree instance has been deleted. A Trap is generated on the occurence of this event.

What is nnMstBridgeInstanceDownCount?

Counts how many times this spanning-tree instance has been deleted from the bridge; a trap is generated each time this happens.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.45.5.5.1.2.1.11
snmpwalk -v2c -c public <target> NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB::nnMstBridgeInstanceDownCount

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.45.5.5.1.2.1.11.1
snmpget -v2c -c public <target> NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB::nnMstBridgeInstanceDownCount.1

Start monitoring Nortel Networks Layer 2 switch (Multiple Spanning Tree) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB::nnMstBridgeInstanceDownCount OID value, configure state conditions and alerts, and monitor any Nortel Networks Layer 2 switch (Multiple Spanning Tree) from a single console.

OID Breakdown

Upper-level ancestors (8 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
1.3.6.1.4.1.45synopticsCMU-MIB
1.3.6.1.4.1.45.5bayStackMibsSYNOPTICS-ROOT-MIB
Numeric OIDNameModule
1.3.6.1.4.1.45.5.5nnMultipleSpanningTreeMibNORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB
1.3.6.1.4.1.45.5.5.1nnMstObjectsNORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB
1.3.6.1.4.1.45.5.5.1.2nnMstBridgeTableNORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB
1.3.6.1.4.1.45.5.5.1.2.1nnMstBridgeEntryNORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB
1.3.6.1.4.1.45.5.5.1.2.1.11nnMstBridgeInstanceDownCountNORTEL-NETWORKS-MULTIPLE-SPANNING-TREE-MIB