IB-SMA-MIB :: ibSmaPortLinkWidthActive

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › IB-SMA-MIB › ibSmaPortLinkWidthActive

ibSmaPortLinkWidthActive

Module: IB-SMA-MIB

OID (symbolic): IB-SMA-MIB::ibSmaPortLinkWidthActive

OID (numeric): 1.3.6.1.3.117.3.1.5.1.1.4

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: Currently active link width on this port. This is indicated as follows by the SMA: 1: 1x 2: 4x 8: 12x 0, 3, 4-7, 9-255: Reserved.

What is ibSmaPortLinkWidthActive?

The link width currently active on this port (1x, 4x, or 12x); comparing this against ibSmaPortLinkWidthSupported/Enabled quickly reveals whether a link has trained down to a lower width than it should.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.3.117.3.1.5.1.1.4
snmpwalk -v2c -c public <target> IB-SMA-MIB::ibSmaPortLinkWidthActive

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.3.117.3.1.5.1.1.4.1
snmpget -v2c -c public <target> IB-SMA-MIB::ibSmaPortLinkWidthActive.1

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

OID Breakdown

Upper-level ancestors (6 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
1.3.6.1.3.117pmIB-PM-MIB
Numeric OIDNameModule
1.3.6.1.3.117.3ibSmaMIBIB-SMA-MIB
1.3.6.1.3.117.3.1ibSmaObjectsIB-SMA-MIB
1.3.6.1.3.117.3.1.5ibSmaDataPortInfoIB-SMA-MIB
1.3.6.1.3.117.3.1.5.1ibSmaPortInfoTableIB-SMA-MIB
1.3.6.1.3.117.3.1.5.1.1ibSmaPortInfoEntryIB-SMA-MIB
1.3.6.1.3.117.3.1.5.1.1.4ibSmaPortLinkWidthActiveIB-SMA-MIB