MELLANOX-MIB :: cntMTU

MIB Reference — IPNetwork Monitor · Updated September 21, 2026

All MIBs › MELLANOX-MIB › cntMTU

cntMTU

Module: MELLANOX-MIB

OID (symbolic): MELLANOX-MIB::cntMTU

OID (numeric): 1.3.6.1.4.1.33049.2.2.1.2.1.1.7

Node type: OBJECT-TYPE

Type: OCTET STRING

Access: read-only

Description: Maximum block size on this port

What is cntMTU?

Maximum transmission unit currently in effect on this port. Comparing it against cntMaxSupportedMTUs shows whether the port is configured to use its full supported frame size.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.33049.2.2.1.2.1.1.7
snmpwalk -v2c -c public <target> MELLANOX-MIB::cntMTU

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.33049.2.2.1.2.1.1.7.1
snmpget -v2c -c public <target> MELLANOX-MIB::cntMTU.1

SNMPv3 example:

snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cntMTU.1

Start monitoring Mellanox (NVIDIA) InfiniBand/Ethernet switch or network adapter with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the MELLANOX-MIB::cntMTU OID value, configure state conditions and alerts, and monitor any Mellanox (NVIDIA) InfiniBand/Ethernet switch or network adapter 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
1.3.6.1.4.1.33049.2mellanoxMgmtMELLANOX-EFM-MIB
1.3.6.1.4.1.33049.2.2ibSwitchMELLANOX-EFM-MIB
1.3.6.1.4.1.33049.2.2.1ibVariablesMELLANOX-EFM-MIB
1.3.6.1.4.1.33049.2.2.1.2ibPortsMELLANOX-EFM-MIB
1.3.6.1.4.1.33049.2.2.1.2.1cntTableMELLANOX-EFM-MIB
1.3.6.1.4.1.33049.2.2.1.2.1.1cntEntryMELLANOX-EFM-MIB
Numeric OIDNameModule
1.3.6.1.4.1.33049mellanoxMELLANOX-MIB
1.3.6.1.4.1.33049.2.2.1.2.1.1.7cntMTUMELLANOX-MIB