All MIBs › SNMP-SMIv2-MIB › linkDown
linkDown
Module: SNMP-SMIv2-MIB
OID (symbolic): SNMP-SMIv2-MIB::linkDown
OID (numeric): 1.3.6.1.6.3.1.1.5.3
Node type: NOTIFICATION-TYPE
Description: A linkDown trap signifies that the SNMPv2 entity, acting in an agent role, has detected that the ifOperStatus object for one of its communication links is about to transition into the down state.
Examples
Send this trap to an SNMP manager — replace <manager> with the IP or hostname of your monitoring server (SNMPv2c):
snmptrap -v2c -c public <manager> '' SNMP-SMIv2-MIB::linkDown snmptrap -v2c -c public <manager> '' 1.3.6.1.6.3.1.1.5.3
Listen for incoming traps on the manager host (-f keeps it in the foreground, -Lo prints to stdout — useful for testing):
snmptrapd -f -Lo -c /dev/null authCommunity log public
Example snmptrapd log entry:
zoo11-linux.zoo [UDP: [192.168.30.111]:50663->[192.168.30.10]:162]: DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (496033255) 57 days, 9:52:12.55 SNMPv2-MIB::snmpTrapOID.0 = OID: SNMP-SMIv2-MIB::linkDown
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OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.6 | snmpV2 | DASAN-DHCP-MIB |
| 1.3.6.1.6.3 | snmpModules | RAPID-CITY |
| 1.3.6.1.6.3.1 | snmpMIB | RAPID-CITY |
| 1.3.6.1.6.3.1.1 | snmpMIBObjects | RAPID-CITY |
| 1.3.6.1.6.3.1.1.5 | snmpTraps | RAPID-CITY |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.6.3.1.1.5.3 | linkDown | SNMP-SMIv2-MIB |