Chapter 3 Wireless LANs
NWD271N User’s Guide
44
Figure 21
How WPS works
The roles of registrar and enrollee last only as long as the WPS setup process is active (two
minutes). The next time you use WPS, a different device can be the registrar if necessary.
The WPS connection process is like a handshake; only two devices participate in each WPS
transaction. If you want to add more devices you should repeat the process with one of the
existing networked devices and the new device.
Note that the access point (AP) is not always the registrar, and the wireless client is not always
the enrollee. All WPS-certified APs can be a registrar, and so can some WPS-enabled wireless
clients.
By default, a WPS devices is “unconfigured”. This means that it is not part of an existing
network and can act as either enrollee or registrar (if it supports both functions). If the registrar
is unconfigured, the security settings it transmits to the enrollee are randomly-generated. Once
a WPS-enabled device has connected to another device using WPS, it becomes “configured”.
A configured wireless client can still act as enrollee or registrar in subsequent WPS
connections, but a configured access point can no longer act as enrollee. It will be the registrar
in all subsequent WPS connections in which it is involved. If you want a configured AP to act
as an enrollee, you must reset it to its factory defaults.
3.4.3.1 Example WPS Network Setup
This section shows how security settings are distributed in an example WPS setup.
The following figure shows an example network. In step
1
, both
AP1
and
Client 1
are
unconfigured. When WPS is activated on both, they perform the handshake. In this example,
AP1
is the registrar, and
Client 1
is the enrollee. The registrar randomly generates the security
information to set up the network, since it is unconfigured and has no existing information.
SECURE TUNNEL
SECURITY INFO
WITHIN 2 MINUTES
COMMUNICATION
ACTIVATE
WPS
ACTIVATE
WPS
WPS HANDSHAKE
REGISTRAR
ENROLLEE
Содержание NWD217N
Страница 1: ...www zyxel com NWD217N WLAN 802 11n USB Adapter User s Guide Version 1 0 05 2008 Edition 1...
Страница 2: ......
Страница 8: ...Contents Overview NWD271N User s Guide 8...
Страница 12: ...Table of Contents NWD271N User s Guide 12...
Страница 16: ...List of Figures NWD271N User s Guide 16...
Страница 18: ...List of Tables NWD271N User s Guide 18...
Страница 20: ...20...
Страница 36: ...Chapter 2 Tutorial NWD271N User s Guide 36...
Страница 48: ...Chapter 3 Wireless LANs NWD271N User s Guide 48...
Страница 70: ...Chapter 4 ZyXEL Utility Windows NWD271N User s Guide 70...
Страница 74: ...Chapter 5 Maintenance NWD271N User s Guide 74...
Страница 75: ...75 PART II Troubleshooting and Specifications Troubleshooting 77 Product Specifications 81...
Страница 76: ...76...
Страница 80: ...Chapter 6 Troubleshooting NWD271N User s Guide 80...
Страница 84: ...Chapter 7 Product Specifications NWD271N User s Guide 84...
Страница 86: ...86...
Страница 134: ...Appendix C Windows Wireless Management NWD271N User s Guide 134...
Страница 138: ...Appendix D Legal Information NWD271N User s Guide 138...
Страница 144: ...Appendix E Customer Support NWD271N User s Guide 144...