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Fat AP and Cloud AP V200R010C00 Command Reference

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mtu (Cloud AP)

mtu (Cloud AP)


The mtu command sets the maximum transmission unit (MTU) of the AP's CAPWAP tunnel.

The undo mtu command restores the default MTU value of the AP's CAPWAP tunnel.

By default, the MTU value of the AP's CAPWAP tunnel is 1500 bytes.


mtu mtu

undo mtu






Specifies the MTU size supported by the AP's CAPWAP tunnel.

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


System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The MTU value determines the maximum number of bytes that can be sent by a device at a time. If the MTU value exceeds the maximum number of bytes supported by the receive end or a device along the transmission path, packets are fragmented or even discarded, increasing the network transmission load. To prevent this problem, set the MTU value of the AP's CAPWAP tunnel.


# Set the MTU value of the AP's CAPWAP tunnel to 1492 bytes.

<Huawei> system-view
[Huawei] mtu 1492
Updated: 2019-11-21

Document ID: EDOC1100064352

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