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3 how wps works – ZyXEL Communications Prestige P-870HW-51a v2 User Manual

Page 101

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Chapter 7 Wireless LAN

P-870HW-51a v2 User’s Guide

101

The following figure shows a WPS-enabled wireless client (installed in a notebook
computer) connecting to the WPS-enabled AP via the PIN method.

Figure 49 Example WPS Process: PIN Method

7.9.4.3 How WPS Works

When two WPS-enabled devices connect, each device must assume a specific role.
One device acts as the registrar (the device that supplies network and security
settings) and the other device acts as the enrollee (the device that receives
network and security settings. The registrar creates a secure EAP (Extensible
Authentication Protocol) tunnel and sends the network name (SSID) and the WPA-
PSK or WPA2-PSK pre-shared key to the enrollee. Whether WPA-PSK or WPA2-PSK
is used depends on the standards supported by the devices. If the registrar is
already part of a network, it sends the existing information. If not, it generates
the SSID and WPA(2)-PSK randomly.

ENROLLEE

SECURE EAP TUNNEL

SSID

WPA(2)-PSK

WITHIN 2 MINUTES

COMMUNICATION

This device’s

WPS

Enter WPS PIN

WPS

from other device:

WPS PIN:

123456

WPS

START

WPS

START

REGISTRAR