ES1000-MIB :: swDevAlarmTopologyChange

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsES1000-MIBswDevAlarmTopologyChange

swDevAlarmTopologyChange

Module: ES1000-MIB

OID (symbolic): ES1000-MIB::swDevAlarmTopologyChange

OID (numeric): 1.3.6.1.4.1.326.2.20.1.2.2.2.24.1.3.3

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: This object determine to send a trap or not when the switch topology was changed. If the object is enabled(3), the topologyChange trap is sent by the device when any of its configured ports transitions from the Learning state to the Forwarding state, or from the Forwarding state to the Blocking state. For the same port tranition, the device doesn't send the trap if this object value is disabled or other.

What is swDevAlarmTopologyChange?

Turns on or off whether the switch sends a topology-change trap whenever a configured port transitions between STP Learning/Forwarding/Blocking states, letting admins detect network topology instability.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.326.2.20.1.2.2.2.24.1.3.3
snmpwalk -v2c -c public <target> ES1000-MIB::swDevAlarmTopologyChange

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.326.2.20.1.2.2.2.24.1.3.3.1
snmpget -v2c -c public <target> ES1000-MIB::swDevAlarmTopologyChange.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.326.2.20.1.2.2.2.24.1.3.3.1 i <value>

Start monitoring ES1000-series modular Ethernet switch (Marconi/D-Link 'Golf' platform) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ES1000-MIB::swDevAlarmTopologyChange OID value, configure state conditions and alerts, and monitor any ES1000-series modular Ethernet switch (Marconi/D-Link 'Golf' platform) from a single console.

OID Breakdown

Upper-level ancestors (6 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
Numeric OIDNameModule
1.3.6.1.4.1.326marconiES1000-MIB
1.3.6.1.4.1.326.2systemsES1000-MIB
1.3.6.1.4.1.326.2.20externalES1000-MIB
1.3.6.1.4.1.326.2.20.1dlinkES1000-MIB
1.3.6.1.4.1.326.2.20.1.2golfES1000-MIB
1.3.6.1.4.1.326.2.20.1.2.2golfcommonES1000-MIB
1.3.6.1.4.1.326.2.20.1.2.2.2marconi_mgmtES1000-MIB
1.3.6.1.4.1.326.2.20.1.2.2.2.24es1000SeriesES1000-MIB
1.3.6.1.4.1.326.2.20.1.2.2.2.24.1swDevPackageES1000-MIB
1.3.6.1.4.1.326.2.20.1.2.2.2.24.1.3swDevAlarmES1000-MIB
1.3.6.1.4.1.326.2.20.1.2.2.2.24.1.3.3swDevAlarmTopologyChangeES1000-MIB