Procedures For Configuring Interfaces - Cisco Catalyst 2950 Software Configuration Manual

Chapter 9 Configuring Interface Characteristics
To configure a physical interface (port), enter interface configuration mode, and specify the interface type,
slot, and number.
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You can identify physical interfaces by physically checking the interface location on the switch. You can
also use the 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.

Procedures for Configuring Interfaces

These general instructions apply to all interface configuration processes.
Enter the configure terminal command at the privileged EXEC prompt:
Step 1
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 and the number of the
connector. In this example, Gigabit Ethernet interface 0/1 is selected:
Switch(config)# interface gigabitethernet0/1
Switch(config-if)#
Note
Follow each interface command with the interface configuration commands your particular interface
Step 3
requires. The commands 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.
You can also configure a range of interfaces by using the interface range or interface range macro
global configuration commands. Interfaces configured in a range must be the same type and must be
configured with the same feature options.
After you configure an interface, verify its status by using the show privileged EXEC commands listed
Step 4
in the
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Type—Fast Ethernet (fastethernet or fa) for 10/100 Ethernet or Gigabit Ethernet (gigabitethernet or
gi)
Slot—The slot number on the switch. On the Catalyst 2950 switch, the slot number is 0.
Port number—The interface number on the switch. The port numbers always begin at 1, starting at
the left when facing the front of the switch, for example, gigabitethernet 0/1, gigabitethernet 0/2. If
there is more than one media type (for example, 10/100 ports and Gigabit Ethernet ports), the port
number starts again with the second media: fastethernet0/1, fastethernet0/2.
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 0/1, gigabitethernet0/1, gi 0/1, or
gi0/1.
"Monitoring and Maintaining the Interface" section on page 9-16.
Catalyst 2950 Desktop Switch Software Configuration Guide
Using the Interface Command
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