Specifications

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Multilayer Switching Overview

Features That Affect MLS

Maximum Transmission Unit

The maximum transmission unit (MTU) for an MLS interface must be the default Ethernet MTU,

1500 bytes.

To change the MTU on an MLS-enabled interface, you must first disable MLS on the interface (enter no

mls rp ip global configuration command in the interface). If you attempt to change the MTU with MLS

enabled, the following message is displayed:

Need to turn off the mls router for this interface first.

If you attempt to enable MLS on an interface that has an MTU value other than the default value, the

following message is displayed:

mls only supports interfaces with default mtu size

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