IB-PM-MIB :: pmPortCountersLinkDown

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › IB-PM-MIB › pmPortCountersLinkDown

pmPortCountersLinkDown

Module: IB-PM-MIB

OID (symbolic): IB-PM-MIB::pmPortCountersLinkDown

OID (numeric): 1.3.6.1.3.117.1.4.1.5

Node type: OBJECT-TYPE

Type: Integer32

Access: read-write

Description: Total number of times the port training state machine has failed the link error recovery process and downed the link.

What is pmPortCountersLinkDown?

Counts how many times this port's link training state machine failed error recovery and the link actually went down. A nonzero and growing value here points to a physical-layer problem serious enough to have interrupted traffic, not just a transient blip.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.3.117.1.4.1.5
snmpwalk -v2c -c public <target> IB-PM-MIB::pmPortCountersLinkDown

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.3.117.1.4.1.5.1
snmpget -v2c -c public <target> IB-PM-MIB::pmPortCountersLinkDown.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.3.117.1.4.1.5.1 i <value>

Start monitoring InfiniBand switch/host channel adapter (HCA), performance management with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the IB-PM-MIB::pmPortCountersLinkDown OID value, configure state conditions and alerts, and monitor any InfiniBand switch/host channel adapter (HCA), performance management from a single console.

OID Breakdown

Upper-level ancestors (5 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.3experimentalAPERTUS-NPG-MIB
Numeric OIDNameModule
1.3.6.1.3.117pmIB-PM-MIB
1.3.6.1.3.117.1pmMIBObjectsIB-PM-MIB
1.3.6.1.3.117.1.4pmPortCountersTableIB-PM-MIB
1.3.6.1.3.117.1.4.1pmPortCountersoEntryIB-PM-MIB
1.3.6.1.3.117.1.4.1.5pmPortCountersLinkDownIB-PM-MIB