Chapter 7 Wireless
EMG6726/8726-B10A User’s Guide
97
7.8.8.3 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.
Figure 43
WPS: Example Network Step 1
In step
2
, you add another wireless client to the network. You know that
Client 1
supports registrar mode,
but it is better to use
AP1
for the WPS handshake with the new client since you must connect to the
access point anyway in order to use the network. In this case,
AP1
must be the registrar, since it is
configured (it already has security information for the network).
AP1
supplies the existing security
information to
Client 2
.
Figure 44
WPS: Example Network Step 2
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.
REGISTRAR
ENROLLEE
SECURITY INFO
CLIENT 1
AP1
REGISTRAR
CLIENT 1
AP1
ENROLLEE
CLIENT 2
EXISTING CONNECTION
SECURITY INFO