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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring Interface Characteristics
Configuring the System MTU
If you enter a value that is outside the allowed range for the specific type of interface, the value is not
accepted.
This example shows how to set the maximum packet size for a Gigabit Ethernet port to 7500 bytes:
Switch(config)# system mtu jumbo 7500
Switch(config)# exit
Switch# reload
This example shows the response when you try to set Gigabit Ethernet interfaces to an out-of-range
number:
Switch(config)# system mtu jumbo 25000
^
% Invalid input detected at '^' marker.
Step 4
system mtu bytes (Optional) In a mixed hardware stack, change the MTU
size for all Fast Ethernet interfaces on the Catalyst 3750
members.
The range is 1500 to 1998 bytes; the default is
1500 bytes.
Note This command does not apply to
Catalyst 3560-X switches.
Step 5
end Returns to privileged EXEC mode.
Step 6
copy running-config startup-config Saves your entries in the configuration file.
Step 7
reload Reloads the operating system.
Step 8
show system mtu Verifies your settings.
Command Purpose