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Figure 2 Bridging Application
1.1.3 High Performance Switching Example
The Switch is ideal for connecting two networks that need high bandwidth. In the following
example, use trunking to connect these two networks.
Switching to higher-speed LANs such as ATM (Asynchronous Transmission Mode) is not feasible for
most people due to the expense of replacing all existing Ethernet cables and adapter cards,
restructuring your network and complex maintenance. The Switch can provide the same bandwidth
as ATM at much lower cost while still being able to use existing adapters and switches. Moreover,
the current LAN structure can be retained as all ports can freely communicate with each other.
Figure 3 High Performance Switched Workgroup Application
1.1.4 IEEE 802.1Q VLAN Application Examples
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 Chapter 9 on page 91.
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