All MIBs › DES3550-L2MGMT-MIB › swL2DevAlarmTopologyChange
swL2DevAlarmTopologyChange
Module: DES3550-L2MGMT-MIB
OID (symbolic): DES3550-L2MGMT-MIB::swL2DevAlarmTopologyChange
OID (numeric): 1.3.6.1.4.1.171.11.64.2.2.1.3.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: This object determines whether to send a trap or not when the switch topology has changed. 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 doesn't send the trap if this object value is set to disabled or other.
What is swL2DevAlarmTopologyChange?
Determines whether a trap is sent when STP causes a port to transition between Forwarding and Blocking/Learning states. Enabling it gives early warning of unstable links or loops causing repeated topology recalculation.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.171.11.64.2.2.1.3.2 snmpwalk -v2c -c public <target> DES3550-L2MGMT-MIB::swL2DevAlarmTopologyChange
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.171.11.64.2.2.1.3.2.1 snmpget -v2c -c public <target> DES3550-L2MGMT-MIB::swL2DevAlarmTopologyChange.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.171.11.64.2.2.1.3.2.1 i <value>
Start monitoring D-Link DES-3550 managed switch with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DES3550-L2MGMT-MIB::swL2DevAlarmTopologyChange OID value, configure state conditions and alerts, and monitor any D-Link DES-3550 managed switch from a single console.
OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.4.1.171.11.64 | des3500SeriesProd | SW3500PRIMGMT-MIB |
| 1.3.6.1.4.1.171.11.64.2 | des3550 | SW3500PRIMGMT-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.171.11.64.2.2 | swL2MgmtMIB | DES3550-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.64.2.2.1 | swL2DevMgmt | DES3550-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.64.2.2.1.3 | swL2DevAlarm | DES3550-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.64.2.2.1.3.2 | swL2DevAlarmTopologyChange | DES3550-L2MGMT-MIB |