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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
Chapter12 Configuring Interface Characteristics
Using Interface Configuration Mode
• 0/1 - 4 0/1-4 The interface range command only works with VLAN interfaces that have been
configured with the interface vlan command. The show running-config privileged EXEC
command displays the configured VLAN interfaces. VLAN interfaces not displayed by the show
running-config command cannot be used with the interface range command.
•All interfaces defined in a range must be the same type (all Fast Ethernet ports, all Gigabit Ethernet
ports, all EtherChannel ports, or all VLANs), but you can enter multiple ranges in a command.
This example shows how to use the interface range global configuration command to set the speed on
ports 1 to 2 to 100 Mb/s:
Switch# configure terminal
Switch(config)# interface range gigabitethernet1/0/1 - 2
Switch(config-if-range)# speed 100
This example shows how to use a comma to add different interface type strings to the range to enable
Fast Ethernet ports 1 to 3 on switch 1 and Gigabit Ethernet ports 1 and 2 on switch2 to receive
flow-control pause frames:
Switch# configure terminal
Switch(config)# interface range gigabitethernet1/0/1 - 3, gigabitethernet1/0/1 - 2
Switch(config-if-range)# flowcontrol receive on
If you enter multiple configuration commands while you are in interface-range mode, each command is
executed as it is entered. The commands are not batched and executed after you exit interface-range
mode. If you exit interface-range configuration mode while the commands are being executed, some
commands might not be executed on all interfaces in the range. Wait until the command prompt
reappears before exiting interface-range configuration mode.
Configuring and Using Interface Range Macros
You can create an interface range macro to automatically select a range of interfaces for configuration.
Before you can use the macro keyword in the interface range macro global configuration command
string, you must use the define interface-range global configuration command to define the macro.
Beginning in privileged EXEC mode, follow these steps to define an interface range macro:
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 define interface-range macro_name
interface-range
Define the interface-range macro, and save it in NVRAM.
•The macro_name is a 32-character maximum character string.
•A macro can contain up to five comma-separated interface ranges.
•Each interface-range must consist of the same port type.
Step3 interface range macro macro_name Select the interface range to be configured using the values saved in
the interface-range macro called macro_name.
You can now use the normal configuration commands to apply the
configuration to all interfaces in the defined macro.
Step4 end Return to privileged EXEC mode.
Step5 show running-config | include define Show the defined interface range macro configuration.
Step6 copy running-config startup-config (Optional) Save your entries in the configuration file.