All MIBs › MELLANOX-MIB-3 › cntMTU
cntMTU
Module: MELLANOX-MIB-3
OID (symbolic): MELLANOX-MIB-3::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?
Read-only OCTET STRING giving the maximum block (packet) size configured on this external IB port. Admins compare this across a fabric to catch MTU mismatches that could cause fragmentation or dropped large packets.
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-3::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-3::cntMTU.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cntMTU.1
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OID Breakdown
Upper-level ancestors (13 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.33049 | mellanox | MELLANOX-MIB |
| 1.3.6.1.4.1.33049.2 | mellanoxMgmt | MELLANOX-EFM-MIB |
| 1.3.6.1.4.1.33049.2.2 | ibSwitch | MELLANOX-EFM-MIB |
| 1.3.6.1.4.1.33049.2.2.1 | ibVariables | MELLANOX-EFM-MIB |
| 1.3.6.1.4.1.33049.2.2.1.2 | ibPorts | MELLANOX-EFM-MIB |
| 1.3.6.1.4.1.33049.2.2.1.2.1 | cntTable | MELLANOX-EFM-MIB |
| 1.3.6.1.4.1.33049.2.2.1.2.1.1 | cntEntry | MELLANOX-EFM-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.33049.2.2.1.2.1.1.7 | cntMTU | MELLANOX-MIB-3 |