Cisco 2950G 24 Software Configuration Guide - Page 229

CH A P T E R 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. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 9-1