Mtu - Cisco ME 3800X Command Reference Manual

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Cisco ME 3800X and ME 3600X Switch Cisco IOS Commands

mtu

To set the maximum packet size or maximum transmission unit (MTU) size for an interface, use the mtu

command in interface configuration mode. To return to the default value, use the no form of this

Syntax Description

The default maximum transmission unit (MTU) size for frames received and sent on all interfaces on the

switch is 1500 bytes.

Command Modes

Interface configuration

Command History

Usage Guidelines

When you use this command to change the MTU size on an interface, it is not necessary to reset the

switch before the new configuration takes effect.

Because the switch does not fragment Layer 2 packets, it drops switched Layer 2 packets larger than the

packet size supported on the egress interface.

This example shows how to set the maximum packet size for a port to 1800 bytes:

Switch(config)# interface gigabitethernet 0/1

Switch(config-if)# mtu 1800

Switch(config)# exit

Related Commands

show interface [interface-id] mtu

no mtu bytes

Set the system MTU for the interface. The range is from 1500 to 9800 bytes.

The default is 1500.

Modification

This command was introduced.

Displays the MTU size for all interfaces or for the

specified interface.

Cisco ME 3800X and ME 3600X Switch Command Reference