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CHAPTER
9-1
Catalyst 2950 Desktop Switch Software Configuration Guide
78-14982-01
9
Configuring the Switch Interfaces
This chapter defines the types of interfaces on the switch and describes how to configure them. The
chapter has these sections:
• Understanding Interface Types, page 9-1
• Using the Interface Command, page 9-4
• Configuring Switch Interfaces, page 9-9
• Monitoring and Maintaining the Interfaces, page 9-16
Note For complete syntax and usage information for the commands used in this chapter, refer to the switch
command reference for this release and the online Cisco IOS Interface Command Reference for
Release 12.1.
Understanding Interface Types
This section describes the different types of interfaces supported by the switch with references to
chapters that contain more detailed information about configuring these interface types. The rest of the
chapter describes configuration procedures for switch ports.
Switch ports are Layer 2-only interfaces associated with a physical port. They are used for managing the
physical interface and associated Layer 2 protocols and do not handle routing or bridging. A switch port
can be an access port or a trunk port.
You can configure a port as an access port or trunk port or let the Dynamic Trunking Protocol (DTP)
operate on a per-port basis to determine if a switch port should be an access port or a trunk port by
negotiating with the port on the other end of the link.
Configure switch ports by using the switchport interface configuration commands. For detailed
information about configuring access port and trunk port characteristics, see Chapter 14, “Configuring
VLANs.”
Note The physical switch ports switches can be 10/100 Ethernet ports, 10/100/1000 Ethernet ports,
100BASE-FX ports, 1000BASE-SX ports, GBIC module ports, and Long-Reach Ethernet (LRE) ports.
For more information, refer to the switch hardware installation guide.