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Configuring Ethernet VLAN Trunks
This chapter describes how to configure Ethernet VLAN trunks on the Catalyst 6000 family switches.
For complete information on configuring VLANs, see
Note
For complete syntax and usage information for the commands used in this chapter, refer to the
Note
Catalyst 6000 Family Command Reference publication.
This chapter consists of these sections:
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Understanding How VLAN Trunks Work
These sections describe how VLAN trunks work on the Catalyst 6000 family switches:
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Trunking Overview
A trunk is a point-to-point link between one or more Ethernet switch ports and another networking
device such as a router or a switch. Trunks carry the traffic of multiple VLANs over a single link and
allow you to extend VLANs across an entire network.
Two trunking encapsulations are available on all Ethernet ports:
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78-13315-02
Understanding How VLAN Trunks Work, page 5-1
Default Trunk Configuration, page 5-5
Configuring a Trunk Link, page 5-5
Example VLAN Trunk Configurations, page 5-9
Disabling VLAN 1 on Trunks, page 5-23
Trunking Overview, page 5-1
Trunking Modes and Encapsulation Types, page 5-2
802.1Q Trunk Restrictions, page 5-4
Inter-Switch Link (ISL)—ISL is a Cisco-proprietary trunking encapsulation
IEEE 802.1Q—802.1Q is an industry-standard trunking encapsulation
Chapter 11, "Configuring VLANs."
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
C H A P T E R
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