All MIBs › DGS3120-24PC-L2MGMT-MIB › swL2DevAlarmTopologyChange
swL2DevAlarmTopologyChange
Module: DGS3120-24PC-L2MGMT-MIB
OID (symbolic): DGS3120-24PC-L2MGMT-MIB::swL2DevAlarmTopologyChange
OID (numeric): 1.3.6.1.4.1.171.11.117.1.2.2.1.3.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: This object determines whether or not to send a trap message when the switch topology changes. If the object is enabled (3), the Topology Change trap is sent by the device when any of its configured ports transition from the Learning state to the Forwarding state, or from the Forwarding state to the Blocking state. For the same port transition, the device does not send the trap if this object value is disabled or in another state.
What is swL2DevAlarmTopologyChange?
Enables or disables sending an SNMP trap whenever the Spanning Tree topology changes (a port transitions Learning-to-Forwarding or Forwarding-to-Blocking); helps an admin catch unstable links causing repeated STP recalculation.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.171.11.117.1.2.2.1.3.2 snmpwalk -v2c -c public <target> DGS3120-24PC-L2MGMT-MIB::swL2DevAlarmTopologyChange
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.171.11.117.1.2.2.1.3.2.1 snmpget -v2c -c public <target> DGS3120-24PC-L2MGMT-MIB::swL2DevAlarmTopologyChange.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.171.11.117.1.2.2.1.3.2.1 i <value>
Start monitoring D-Link PoE switches with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DGS3120-24PC-L2MGMT-MIB::swL2DevAlarmTopologyChange OID value, configure state conditions and alerts, and monitor any D-Link PoE switches from a single console.
OID Breakdown
Upper-level ancestors (11 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.171 | d_link | DE1500-MIB |
| 1.3.6.1.4.1.171.11 | dlink_mgmt | DES2218-MIB |
| 1.3.6.1.4.1.171.11.117 | dlink_Dgs3120Proj | SWDGS3120PRIMGMT-MIB |
| 1.3.6.1.4.1.171.11.117.1 | dlink_Dgs3120ProjModel | SWDGS3120PRIMGMT-MIB |
| 1.3.6.1.4.1.171.11.117.1.2 | dlink_Dgs3120Proj_Dgs3120_24PC | SWDGS3120PRIMGMT-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.171.11.117.1.2.2 | swL2MgmtMIB | DGS3120-24PC-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.117.1.2.2.1 | swL2DevMgmt | DGS3120-24PC-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.117.1.2.2.1.3 | swL2DevAlarm | DGS3120-24PC-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.117.1.2.2.1.3.2 | swL2DevAlarmTopologyChange | DGS3120-24PC-L2MGMT-MIB |