11-8
Catalyst 3750 Switch Software Configuration Guide
78-16180-02
Chapter 11 Configuring Interface Characteristics
Using Interface Configuration Mode
You can identify physical interfaces by physically checking the interface location on the switch. You can
also use the Cisco IOS show privileged EXEC commands to display information about a specific
interface or all the interfaces on the switch. The remainder of this chapter primarily provides physical
interface configuration procedures.
These are examples of identifying interfaces:
• To configure 10/100/1000 port 4 on a standalone switch, enter this command:
Switch(config)# interface gigabitethernet1/0/4
• To configure 10/100 port 4 on stack member 3, enter this command:
Switch(config)# interface fastethernet3/0/4
• To configure 10-Gigabit module port 1 on a standalone switch, enter this command:
Switch(config)# interface tengigabitethernet1/0/1
• To configure 10-Gigabit module port on stack member 3, enter this command:
Switch(config)# interface tengigabitethernet3/0/1
If the switch has SFP modules, the numbering of these ports depends on the type of other interfaces on
the switch. If the port type changes from Fast Ethernet to Gigabit Ethernet (SFP), the port numbers begin
again from 1; if the port type remains Gigabit Ethernet, the port numbers continue consecutively.
• To configure the first SFP port on stack member 1 with 24 10/100/1000 ports, enter this command:
Switch(config)# interface gigabitethernet1/0/25
• To configure the first SFP port on stack member 1 with 24 10/100 ports, enter this command:
Switch(config)# interface gigabitethernet1/0/1
Procedures for Configuring Interfaces
These general instructions apply to all interface configuration processes.
Step 1 Enter the configure terminal command at the privileged EXEC prompt:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
Step 2 Enter the interface global configuration command. Identify the interface type, the switch number, and
the number of the connector. In this example, Gigabit Ethernet port 1 on switch 1 is selected:
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)#
Note You do not need to add a space between the interface type and interface number. For example,
in the preceding line, you can specify either gigabitethernet 1/0/1, gigabitethernet1/0/1,
gi 1/0/1, or gi1/0/1.
Step 3 Follow each interface command with the interface configuration commands that the interface requires.
The commands that you enter define the protocols and applications that will run on the interface. The
commands are collected and applied to the interface when you enter another interface command or enter
end to return to privileged EXEC mode.
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