User's Manual

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Catalyst 3750 Switch Software Configuration Guide
OL-8550-09
Chapter 12 Configuring Interface Characteristics
Configuring the Cisco Redundant Power System 2300
If you enter a value that is outside the allowed range for the specific type of interface, the value is not
accepted.
Once the switch reloads, you can verify your settings by entering the show system mtu privileged EXEC
command.
This example shows how to set the maximum packet size for a Gigabit Ethernet port to 1800 bytes:
Switch(config)# system mtu jumbo 1800
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.
Configuring the Cisco Redundant Power System 2300
Follow these guidelines:
• The RPS name is a 16-character-maximum string.
• On a standalone Catalyst 3750v2 switch, the RPS name applies to the connected RPS 2300.
• In a switch stack, the RPS name applies to the RPS ports connected to the specified switch.
• If you do not want the RPS 2300 to provide power to a switch, but do not want to disconnect the
cable between the switch and the RPS 2300, use the power rps switch-number port rps-port-id
mode standby user EXEC command.
• You can configure the priority of an RPS 2300 port from 1 to 6. A value of 1 assigns highest priority
to a port and its connected device. A value of 6 assigns lowest priority to a port and its connected
device.
If multiple switches connected to the RPS 2300 need power, the RPS 2300 powers those with the
highest priority. It applies any other available power to the lower-priority switches.
Step 3
system mtu jumbo bytes (Optional) Change the MTU size for all Gigabit
Ethernet interfaces on the switch stack.
The range is 1500 to 9000 bytes; the default is 1500
bytes.
Step 4
system mtu routing bytes (Optional) Change the system MTU for routed ports.
The range is 1500 to the system MTU value, the
maximum MTU that can be routed for all ports.
Although larger packets can be accepted, they cannot be
routed.
Step 5
end Return to privileged EXEC mode.
Step 6
copy running-config startup-config Save your entries in the configuration file.
Step 7
reload Reload the operating system.
Command Purpose