IEEE8021-SPANNING-TREE-MIB :: ieee8021SpanningTreeTimeSinceTopologyChange

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › IEEE8021-SPANNING-TREE-MIB › ieee8021SpanningTreeTimeSinceTopologyChange

ieee8021SpanningTreeTimeSinceTopologyChange

Module: IEEE8021-SPANNING-TREE-MIB

OID (symbolic): IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreeTimeSinceTopologyChange

OID (numeric): 1.3.111.2.802.1.1.3.1.1.1.4

Node type: OBJECT-TYPE

Type: TimeTicks

Access: read-only

Description: The time (in hundredths of a second) since the last time a topology change was detected by the Bridge entity. For RSTP, this reports the time since the tcWhile timer for any port on this Bridge was nonzero.

What is ieee8021SpanningTreeTimeSinceTopologyChange?

Hundredths of a second since this bridge last detected a spanning-tree topology change; a small, frequently-resetting value points to a flapping link causing repeated STP recalculations.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.3.1.1.1.4
snmpwalk -v2c -c public <target> IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreeTimeSinceTopologyChange

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.111.2.802.1.1.3.1.1.1.4.1
snmpget -v2c -c public <target> IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreeTimeSinceTopologyChange.1

Start monitoring Vendor-neutral IEEE 802.1D/Q standard (Ethernet bridge or switch running STP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the IEEE8021-SPANNING-TREE-MIB::ieee8021SpanningTreeTimeSinceTopologyChange OID value, configure state conditions and alerts, and monitor any Vendor-neutral IEEE 802.1D/Q standard (Ethernet bridge or switch running STP) from a single console.

OID Breakdown

Upper-level ancestors (3 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.111.2.802.1.1ieee802dot1mibsIEEE8021-TC-MIB
Numeric OIDNameModule
1.3.111.2.802.1.1.3ieee8021SpanningTreeMibIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1ieee8021SpanningTreeObjectsIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.1ieee8021SpanningTreeTableIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.1.1ieee8021SpanningTreeEntryIEEE8021-SPANNING-TREE-MIB
1.3.111.2.802.1.1.3.1.1.1.4ieee8021SpanningTreeTimeSinceTopologyChangeIEEE8021-SPANNING-TREE-MIB