ZyXEL Communications GS1350 Series, Руководство пользователя

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Chapter 8 Basic Setting
GS1350 Series User’s Guide
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8.4 Introduction to VLANs
A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical
networks. Devices on a logical network belong to one group. A device can belong to more than one
group. With VLAN, a device cannot directly talk to or hear from devices that are not in the same
group(s); the traffic must first go through a router.
In MTU (Multi-Tenant Unit) applications, VLAN is vital in providing isolation and security among the
subscribers. When properly configured, VLAN prevents one subscriber from accessing the network
resources of another on the same LAN, thus a user will NOT see the printers and hard disks of another
user in the same building.
VLAN also increases network performance by limiting broadcasts to a smaller and more manageable
logical broadcast domain. In traditional switched environments, all broadcast packets go to each and
every individual port. With VLAN, all broadcasts are confined to a specific broadcast domain.
Note: VLAN is unidirectional; it only governs outgoing traffic.
See Chapter 9 on page 121 for information on port-based and 802.1Q tagged VLANs.
8.5 Switch Setup
Click Basic Setting > Switch Setup in the navigation panel to display the screen as shown. The VLAN
setup screens change depending on whether you choose 802.1Q or Port Based in the VLAN Type field in
this screen. Refer to Chapter 9 on page 121 for more information on VLAN.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Table 25 Basic Setting > General Setup (continued)
LABEL DESCRIPTION