Cisco Systems 3560 사용자 설명서

This chapter describes how to configure normal-range VLANs (VLAN IDs 1 to 1005) and 
extended-range VLANs (VLAN IDs 1006 to 4094) on the Catalyst 3560 switch. It includes information 
about VLAN membership modes, VLAN configuration modes, VLAN trunks, and dynamic VLAN 
assignment from a VLAN Membership Policy Server (VMPS). 

For complete syntax and usage information for the commands used in this chapter, see the command 
reference for this release.

The chapter consists of these sections:

A VLAN is a switched network that is logically segmented by function, project team, or application, 
without regard to the physical locations of the users. VLANs have the same attributes as physical LANs, 
but you can group end stations even if they are not physically located on the same LAN segment. Any 
switch port can belong to a VLAN, and unicast, broadcast, and multicast packets are forwarded and 
flooded only to end stations in the VLAN. Each VLAN is considered a logical network, and packets 
destined for stations that do not belong to the VLAN must be forwarded through a router or a switch 
supporting fallback bridging, as shown in 

. Because a VLAN is considered a separate logical 

network, it contains its own bridge Management Information Base (MIB) information and can support 
its own implementation of spanning tree. See 

Before you create VLANs, you must decide whether to use VLAN Trunking Protocol (VTP) to maintain 
global VLAN configuration for your network. For more information on VTP, see