Power Over Ethernet (Poe); Wireless Lan Overview; Configuring Wireless Lan; Infrastructure - ZyXEL Communications Zy-Air B-420 Quick Installation Manual

5.1 Power over Ethernet (PoE)

Power over Ethernet (PoE) is the ability to provide power to your ZyAIR via an 8-pin CAT 5 Ethernet
cable, eliminating the need for a nearby power source. An injector or PoE device (not included) is also
needed to supply the Ethernet cable with power. This feature allows increased flexibility in the locating of
your ZyAIR. You only need to connect the external power adaptor if you are not using PoE. If you
simultaneously use both PoE and the external power adaptor, the ZyAIR will draw power from the PoE
connection only.

5.2 Wireless LAN Overview

This section introduces the wireless LAN and some basic configurations. A wireless LAN can be as simple
as two computers with wireless adapters communicating in a peer-to-peer network or as complex as a
number of computers with wireless adapters communicating through access points (APs) which bridge
network traffic to the wired LAN.

5.3 Configuring Wireless LAN

Click WIRELESS under SETUP to open the Wireless screen.
The screen varies according to the operating mode you select.

Infrastructure

An infrastructure network, also called a Basic Service Set (BSS), exists when all communications between
wireless stations or between a wireless station and a wired network client go through one access point (AP).
Intra-BSS traffic is traffic between wireless stations in the BSS.
Select Infrastructure from the Operating Mode drop-down list box to display the screen as shown.
ZyAIR B-420 Wireless LAN Ethernet Adapter and Bridge
Figure 3 PoE Installation Example
11