ZyXEL Communications EMG5324-D10A User Manual

 Appendix D Wireless LANs

EMG5324-D10A User’s Guide

In step 3, you add another access point (AP2) to your network. AP2 is out of range of AP1, so you 
cannot use AP1 for the WPS handshake with the new access point. However, you know that Client 
2 supports the registrar function, so you use it to perform the WPS handshake instead.

WPS: Example Network Step 3

WPS has some limitations of which you should be aware. 

• WPS works in Infrastructure networks only (where an AP and a wireless client communicate). It 

does not work in Ad-Hoc networks (where there is no AP).

• When you use WPS, it works between two devices only. You cannot enroll multiple devices 

simultaneously, you must enroll one after the other. 
For instance, if you have two enrollees and one registrar you must set up the first enrollee (by 
pressing the WPS button on the registrar and the first enrollee, for example), then check that it 
successfully enrolled, then set up the second device in the same way.

• WPS works only with other WPS-enabled devices. However, you can still add non-WPS devices to 

a network you already set up using WPS. 
WPS works by automatically issuing a randomly-generated WPA-PSK or WPA2-PSK pre-shared 
key from the registrar device to the enrollee devices. Whether the network uses WPA-PSK or 
WPA2-PSK depends on the device. You can check the configuration interface of the registrar 
device to discover the key the network is using (if the device supports this feature). Then, you 
can enter the key into the non-WPS device and join the network as normal (the non-WPS device 
must also support WPA-PSK or WPA2-PSK).