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Fit AP V200R010C00 Command Reference

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mtu (VLANIF interface view)

mtu (VLANIF interface view)


Using the mtu command, you can set the maximum transmission unit (MTU) of a VLANIF interface.

Using the undo mtu command, you can restore the default MTU of a VLAN interface.

By default, the MTU of a VLAN interface is 1500 bytes.


mtu mtu

undo mtu






Specifies the MTU of a VLANIF interface.

The value is an integer that ranges from 128 to 1700, in bytes.


VLANIF interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

MTU is short for maximum transmission unit. An MTU value determines the maximum number of bytes each time a sender can send. If the size of packets exceeds the MTU supported by a transit node or a receiver, the transit node or receiver fragments the packets or even discards them, aggravating the network transmission load. To avoid this problem, set the MTU value of the VLANIF interface.


# Set the MTU of the VLANIF interface to 1492 bytes.

<Huawei> system-view
[Huawei] interface Vlanif 100
[Huawei-Vlanif100] mtu 1492
Updated: 2019-07-18

Document ID: EDOC1100064353

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