All MIBs › MRV-IR-SYSTEM-MIB › irIfMtu
irIfMtu
Module: MRV-IR-SYSTEM-MIB
OID (symbolic): MRV-IR-SYSTEM-MIB::irIfMtu
OID (numeric): 1.3.6.1.4.1.33.100.1.7.1.1.5
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: The MTU size assigned to this interface.
What is irIfMtu?
This read-only object specifies the Maximum Transmission Unit (MTU) size in octets assigned to an interface, limiting the largest frame that can be transmitted without fragmentation. Common MTU values range from 576 to 1500 bytes depending on the interface type and underlying network technology. An operator checks this value to understand frame size constraints and diagnose fragmentation-related performance issues.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.33.100.1.7.1.1.5 snmpwalk -v2c -c public <target> MRV-IR-SYSTEM-MIB::irIfMtu
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.33.100.1.7.1.1.5.1 snmpget -v2c -c public <target> MRV-IR-SYSTEM-MIB::irIfMtu.1
Start monitoring MRV In-Reach LX console/terminal server (system/firmware/IP config) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the MRV-IR-SYSTEM-MIB::irIfMtu OID value, configure state conditions and alerts, and monitor any MRV In-Reach LX console/terminal server (system/firmware/IP config) from a single console.
OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.33 | iTouch | ITOUCH-MIB |
| 1.3.6.1.4.1.33.100 | mrvLx | MRV-IR-HDAM-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.33.100.1 | irSystemMib | MRV-IR-SYSTEM-MIB |
| 1.3.6.1.4.1.33.100.1.7 | irInterfaces | MRV-IR-SYSTEM-MIB |
| 1.3.6.1.4.1.33.100.1.7.1 | irIfTable | MRV-IR-SYSTEM-MIB |
| 1.3.6.1.4.1.33.100.1.7.1.1 | irIfEntry | MRV-IR-SYSTEM-MIB |
| 1.3.6.1.4.1.33.100.1.7.1.1.5 | irIfMtu | MRV-IR-SYSTEM-MIB |