ZyXEL Communications GS1920-48HPv2, Руководство пользователя

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Chapter 1 Getting to Know Your Switch
GS1920v2 Series User’s Guide
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Fig ure 2
Bridging Application
1.2.3 Hig h Pe rfo rm a nc e Switc hing Exa m ple
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.
Fig ure 3
High Performance Switched Workgroup Application
1.2.4 IEEE 802.1Q VLAN Applic a tio n Exa m ple s
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 107 .