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Cisco IE 3000 Switch Command Reference
OL-13019-01
Chapter 2 IE 3000 Switch Cisco IOS Commands
system mtu
For example, if the system mtu value is 1998 bytes and the system mtu jumbo value is 5000 bytes,
packets up to 5000 bytes can be received on interfaces operating at 1000 Mb/s. However, although a
packet larger than 1998 bytes can be received on an interface operating at 1000 Mb/s, if its destination
interface is operating at 10 or 100 Mb/s, the packet is dropped.
Examples This example shows how to set the maximum jumbo packet size for Gigabit Ethernet ports operating at
1000 Mb/s or greater to 1800 bytes:
Switch(config)# system mtu jumbo 1800
Switch(config)# exit
Switch# reload
You can verify your setting by entering the show system mtu privileged EXEC command.
Related Commands Command Description
show system mtu Displays the packet size set for Fast Ethernet and Gigabit
Ethernet ports.
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