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Catalyst 3750-X and 3560-X Switch Command Reference
OL-21522-02
Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands
system mtu
The upper limit of the system routing MTU value is based on the switch or switch stack configuration
and refers to either the currently applied system MTU or the system jumbo MTU value.
If you enter a value that is outside the allowed range for the specific type of interface, the value is not
accepted.
Examples This example shows how to set the maximum jumbo packet size for Gigabit Ethernet ports to 6000 bytes:
Switch(config)# system mtu jumbo 6000
Switch(config)# exit
Switch# reload
You can verify your setting by entering the show system mtu privileged EXEC command.
Related Commands
Mixed hardware stack Use the system mtu bytes
command, which takes effect
only on Catalyst 3750
members.
1
The range is from 1500 to 1998
bytes.
Use the system mtu jumbo
bytes command.
The range is from 1500 to 9000
bytes.
Use the system mtu routing
bytes command.
The range is from 1500 to the
system MTU value (in bytes).
2
Catalyst 3750-only
stack
Catalyst 3750 switch
Catalyst 3560 switch
Use the system mtu bytes
command.
The range is from 1500 to 1998
bytes.
Use the system mtu jumbo
bytes command.
The range is from 1500 to 9000
bytes.
Use the system mtu routing
bytes command.
The range is from 1500 to the
system MTU value (in bytes).
1. If you use the system mtu bytes command on a Catalyst 3750-X or 3750-E member in a mixed hardware stack, the setting takes effect on the Fast Ethernet
ports of Catalyst
3750 members.
2. The system routing MTU value is the applied value, not the configured value.
Table 2-56 System MTU Values (continued)
Configuration system mtu command system jumbo mtu command system routing mtu command
Command Description
show system mtu Displays the packet size set for Gigabit Ethernet,
10-Gigabit Ethernet, and routed ports.
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