RFC1157 :: rfc1157LinkUp

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › RFC1157 › rfc1157LinkUp

rfc1157LinkUp

Module: RFC1157

OID (symbolic): RFC1157::rfc1157LinkUp

OID (numeric): 1.3.6.1.4.1.311.1.1.3.1.2.0.0

Node type: NOTIFICATION-TYPE

Description: Link 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> '' RFC1157::rfc1157LinkUp
snmptrap -v2c -c public <manager> '' 1.3.6.1.4.1.311.1.1.3.1.2.0.0

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]:52702->[192.168.30.10]:162]:
  DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (431676382) 49 days, 23:06:03.82
  SNMPv2-MIB::snmpTrapOID.0 = OID: RFC1157::rfc1157LinkUp

Start monitoring Siemens equipment (OID tree placeholder only, no protocol/traffic data) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the RFC1157::rfc1157LinkUp OID value, configure state conditions and alerts, and monitor any Siemens equipment (OID tree placeholder only, no protocol/traffic data) from a single console.

OID Breakdown

Upper-level ancestors (12 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.311microsoftEVNTAGENT-MIB
1.3.6.1.4.1.311.1softwareEVNTAGENT-MIB
1.3.6.1.4.1.311.1.1systemsMSFT-MIB
1.3.6.1.4.1.311.1.1.3osMSFT-MIB
1.3.6.1.4.1.311.1.1.3.1windowsNTMSFT-MIB
1.3.6.1.4.1.311.1.1.3.1.2serverMSFT-MIB
Numeric OIDNameModule
1.3.6.1.4.1.311.1.1.3.1.2.0.0rfc1157LinkUpRFC1157