Cisco Nexus 5000 Series Switch CLI Software Configuration Guide (OL-16597-01, July 2009)

CHAPTER 8
Configuring Access and Trunk Interfaces
Ethernet interfaces can be configured either as access ports or trunk ports. Trunks carry the traffic of multiple
VLANs over a single link and allow you to extend VLANs across the network.
Cisco NX-OS supports only IEEE 802.1Q-type VLAN trunk encapsulation.Note
This chapter describes the configuration of access or trunk ports on Cisco Nexus 5000 Series switches. It
includes the following sections:
• Information About Access and Trunk Interfaces, page 101
• Configuring Access and Trunk Interfaces, page 105
• Verifying Interface Configuration, page 109
Information About Access and Trunk Interfaces
Understanding Access and Trunk Interfaces
Ethernet interfaces can be configured either as access ports or a trunk ports, as follows:
• An access port can have only one VLAN configured on the interface; it can carry traffic for only one
VLAN.
• A trunk port can have two or more VLANs configured on the interface; it can carry traffic for several
VLANs simultaneously.
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