All MIBs › CISCO-VTP-MIB › vtpVlanMtu
vtpVlanMtu
Module: CISCO-VTP-MIB
OID (symbolic): CISCO-VTP-MIB::vtpVlanMtu
OID (numeric): 1.3.6.1.4.1.9.9.46.1.3.1.1.5
Node type: OBJECT-TYPE
Type: Integer32
Access: read-only
Description: The MTU size on this VLAN, defined as the size of largest MAC-layer (information field portion of the) data frame which can be transmitted on the VLAN.
What is vtpVlanMtu?
This read-only Integer32 object reports the maximum transmission unit configured for a specific VLAN, the largest MAC-layer data frame size that can be sent on it. An administrator checks this when diagnosing the MTU-related VLAN states, since a VLAN's MTU here directly determines whether it can be supported by a given device or trunk port. For example, a VLAN with vtpVlanMtu set unusually high compared to other VLANs in the domain may be the one flagged as mtuTooBigForTrunk on older trunk hardware.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.46.1.3.1.1.5 snmpwalk -v2c -c public <target> CISCO-VTP-MIB::vtpVlanMtu
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.46.1.3.1.1.5.1 snmpget -v2c -c public <target> CISCO-VTP-MIB::vtpVlanMtu.1
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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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.9 | ciscoMgmt | CISCO-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.46 | ciscoVtpMIB | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1 | vtpMIBObjects | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3 | vlanInfo | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3.1 | vtpVlanTable | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3.1.1 | vtpVlanEntry | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3.1.1.5 | vtpVlanMtu | CISCO-VTP-MIB |