All MIBs › DGS3426G-L2MGMT-MIB › swL2DevAlarmTopologyChange
swL2DevAlarmTopologyChange
Module: DGS3426G-L2MGMT-MIB
OID (symbolic): DGS3426G-L2MGMT-MIB::swL2DevAlarmTopologyChange
OID (numeric): 1.3.6.1.4.1.171.11.70.11.2.1.3.2
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 swL2DevAlarmTopologyChange?
Enables or disables a topologyChange trap whenever a configured port transitions between STP Learning/Forwarding/Blocking states. Turning it on gives early warning of spanning-tree recalculations, which usually mean a link flapped or a loop was broken somewhere in the network.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.171.11.70.11.2.1.3.2 snmpwalk -v2c -c public <target> DGS3426G-L2MGMT-MIB::swL2DevAlarmTopologyChange
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.171.11.70.11.2.1.3.2.1 snmpget -v2c -c public <target> DGS3426G-L2MGMT-MIB::swL2DevAlarmTopologyChange.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.171.11.70.11.2.1.3.2.1 i <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> swL2DevAlarmTopologyChange.1
Start monitoring D-Link DGS-3426G Gigabit managed switch with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DGS3426G-L2MGMT-MIB::swL2DevAlarmTopologyChange OID value, configure state conditions and alerts, and monitor any D-Link DGS-3426G Gigabit 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 |
| 1.3.6.1.4.1.171.11.70 | dgsProjectXStackIISeriesProd | SW34XXPRIMGMT-MIB |
| 1.3.6.1.4.1.171.11.70.11 | dgs3426g | SW34XXPRIMGMT-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.171.11.70.11.2 | swL2MgmtMIB | DGS3426G-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.70.11.2.1 | swL2DevMgmt | DGS3426G-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.70.11.2.1.3 | swL2DevAlarm | DGS3426G-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.70.11.2.1.3.2 | swL2DevAlarmTopologyChange | DGS3426G-L2MGMT-MIB |