All MIBs › CNT21-MIB › cnt2IfMtu
cnt2IfMtu
Module: CNT21-MIB
OID (symbolic): CNT21-MIB::cnt2IfMtu
OID (numeric): 1.3.6.1.4.1.333.2.1.2.2.1.5
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: The size of the largest datagram which can be sent/received on the interface, specified in octets. For interfaces that are used for transmitting network datagrams, this is the size of the largest network datagram that can be sent on the interface.
What is cnt2IfMtu?
This Integer32 reports the maximum transmission unit, in octets, that this interface can send or receive as a single datagram. An administrator cares because an MTU mismatch across a network path causes fragmentation or dropped large packets, which shows up as odd performance problems. For example, cnt2IfMtu reading 1500 confirms this interface is sized for standard Ethernet frames rather than a jumbo-frame configuration.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.333.2.1.2.2.1.5 snmpwalk -v2c -c public <target> CNT21-MIB::cnt2IfMtu
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.333.2.1.2.2.1.5.1 snmpget -v2c -c public <target> CNT21-MIB::cnt2IfMtu.1
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OID Breakdown
Upper-level ancestors (9 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 |
| 1.3.6.1.4.1.333 | cnt | CNT2-MIB |
| 1.3.6.1.4.1.333.2 | cnt2 | CNT2-MIB |
| 1.3.6.1.4.1.333.2.1 | cnt2Mib2 | CNT2-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.333.2.1.2 | cnt2Interfaces | CNT21-MIB |
| 1.3.6.1.4.1.333.2.1.2.2 | cnt2IfTable | CNT21-MIB |
| 1.3.6.1.4.1.333.2.1.2.2.1 | cnt2IfEntry | CNT21-MIB |
| 1.3.6.1.4.1.333.2.1.2.2.1.5 | cnt2IfMtu | CNT21-MIB |