mtu

描述

Sets the MTU (maximum transmission unit) for an interface. This defines the maximum size of a layer 2 (Ethernet) frame. Frames larger than the MTU (1500 bytes by default) are droppedand cause an ICMP fragmentation-needed message to be sent back to the originator.

To support jumbo frames (frames larger than 1522 bytes), increase the MTU as required by your network. A frame size of up to 9198 bytes is supported.

The largest possible layer 1 frame will be 18 bytes larger than the MTU value to allow for link layer headers and trailers.

The没有这个命令集的形式the MTU to the default value 1500.

Command context

config-if

Parameters

Specifies the MTU in bytes. Range: 46 to 9198. Default: 1500.

Authority

Administrators or local user group members with execution rights for this command.

Examples

On the 6400 Switch Series, interface identification differs.

Setting the MTU on interface1/1/1to 1000 bytes:

Setting the MTU on interface1/1/1to the default value: