SNMP-SMIv1-MIB :: linkUp

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsSNMP-SMIv1-MIBlinkUp

linkUp

Module: SNMP-SMIv1-MIB

OID (symbolic): SNMP-SMIv1-MIB::linkUp

OID (numeric): 1.3.6.1.2.1.11.0.3

Node type: NOTIFICATION-TYPE

Description: A linkUp trap signifies that the sending protocol entity recognizes that one of the communication links represented in the agent's configuration has come up.

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-SMIv1-MIB::linkUp
snmptrap -v2c -c public <manager> '' 1.3.6.1.2.1.11.0.3

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]:56416->[192.168.30.10]:162]:
  DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (465891936) 53 days, 22:08:39.36
  SNMPv2-MIB::snmpTrapOID.0 = OID: SNMP-SMIv1-MIB::linkUp

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OID Breakdown

Upper-level ancestors (7 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.11snmpCHECKPOINT-MIB-2
Numeric OIDNameModule
1.3.6.1.2.1.11.0.3linkUpSNMP-SMIv1-MIB