Setting the MTU for a Layer 3 aggregate interface

NOTE:

Layer 3 aggregation groups are not supported on the 6100 and 6200 Switch Series.

The MTU of an interface affects IP packets fragmentation and reassembly on the interface.
Prerequisites

You must be in the global configuration context: switch(config)#

Procedure
  1. Enter Layer 3 aggregate interface view by entering: 
    switch(config)# interface lag <INTERFACE-ID>
  2. Set the MTU for the Layer 3 aggregate interface: 
    switch(config-lag-if)# ip mtu <VALUE>

    See the Command-Line Interface Guide for your switch and software version for more information about the ip mtu <VALUE> command. When allowing jumbo frames under a layer 2 aggregation interface, make sure that the MTU value is set appropriately under all member interfaces.

    NOTE:

    If the IP MTU is configured as 9198, the MTU on the physical interfaces must also be configured as 9198.