CHAPTER
19-1
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
19
Configuring Layer 2 Ethernet Interfaces
This chapter describes how to use the command-line interface (CLI) to configure Fast Ethernet and
Gigabit Ethernet interfaces for Layer 2 switching on Catalyst 4500 series switches. It also provides
guidelines, procedures, and configuration examples. The configuration tasks in this chapter apply to Fast
Ethernet and Gigabit Ethernet interfaces on any module, including the uplink ports on the supervisor
engine.
This chapter includes the following major sections:
• About Layer 2 Ethernet Switching, page 19-1
• Default Layer 2 Ethernet Interface Configuration, page 19-4
• Layer 2 Interface Configuration Guidelines and Restrictions, page 19-4
• Configuring Ethernet Interfaces for Layer 2 Switching, page 19-5
Note To configure Layer 3 interfaces, see Chapter 35, “Configuring Layer 3 Interfaces.”
Note For complete syntax and usage information for the switch commands used in this chapter, see the
Cisco IOS Command Reference Guides for the Catalyst 4500 Series Switch.
If a command is not in the Cisco Catalyst 4500 Series Switch Command Reference , you can locate it in
the Cisco IOS Master Command List, All Releases.
About Layer 2 Ethernet Switching
The following sections describe how Layer 2 Ethernet switching works on Catalyst 4500 series switches:
• Layer 2 Ethernet Switching, page 19-2
• VLAN Trunks, page 19-3
• Layer 2 Interface Modes, page 19-3