ZyXEL Communications P-871H Series, Руководство пользователя

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P-871H Series User’s Guide
Chapter 1 Getting to Know Your Prestige 17
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H A P T E R
1
Getting to Know Your Prestige
This chapter introduces the main features and applications of the Prestige.
1.1 Introduction
The Prestige can be used for high-speed Internet access through a VDSL connection over the
telephone line. Its 10/100M auto-negotiating LAN interface enables fast data transfer of either
10Mbps or 100Mbps in either half-duplex or full-duplex mode depending on your Ethernet
network.
With its built-in web configurator, managing and configuring the Prestige is easy. In addition,
the Prestige can also be managed via Telnet or any terminal emulator program on the console
port.
1.2 Software Features
This section describes the general layer-2 bridging and switch features of the Prestige.
VLAN
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.
IGMP Snooping
The Prestige supports IGMP snooping enabling group multicast traffic to be only forwarded to
ports that are members of that group; thus allowing you to significantly reduce multicast traffic
passing through your Prestige.
Broadcast Storm Control
Broadcast storm control limits the number of broadcast frames that can be stored in the
Prestige buffer or sent out from the Prestige. Broadcast frames that arrive when the buffer is
full are discarded. Enable this feature
to reduce broadcast traffic coming into your network.