Ieee 802.1Q Vlan Application Examples; Figure 4 Tag-Based Vlan Application - ZyXEL Communications ES-3148 Series User Manual

1.1.4 IEEE 802.1Q VLAN Application Examples

This section shows a workgroup and a shared server example using 802.1Q tagged VLANs.
A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into
multiple logical networks. Stations on a logical network belong to one group. A station can
belong to more than one group. With VLAN, a station cannot directly talk to or hear from
stations that are not in the same group(s) unless such traffic first goes through a router.
For more information on VLANs, refer to
1.1.4.1 Tag-based VLAN Example
Ports in the same VLAN group share the same frame-broadcast domain and thus increase
network performance through reduced broadcast traffic. VLAN groups can be modified at any
time by adding, moving or changing ports without any re-cabling.

Figure 4 Tag-based VLAN Application

1.1.4.2 VLAN Shared Server Example
Shared resources such as a server can be used by all ports in the same VLAN as the server, as
shown in the following example. In this example, only ports that need access to the server
need belong to VLAN 1. Ports can belong to other VLAN groups too.
ES-3148 User's Guide
Chapter 1 Introducing the Switch
Chapter 8 on page 85.
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