ZyXEL Communications NWA-3163 & NWA-3166 User Manual

Page of 372
 Chapter 5 Management Mode
NWA-3160 Series User’s Guide
89
DHCP Option 43 allows the CAPWAP management request (from the AP in 
managed AP mode) to reach the AP controller in a different subnet, as shown in 
the following figure.
Figure 57   CAPWAP and DHCP Option 43
5.2.4  Notes on CAPWAP
This section lists some additional features of ZyXEL’s implementation of the 
CAPWAP protocol.
• When the AP controller uses its internal Remote Authentication Dial In User 
Service (RADIUS) server, managed APs also use the AP controller’s 
authentication server to authenticate wireless clients.
• Only one AP controller can exist in any single broadcast domain.
• If a managed AP’s link to the AP controller is broken, the managed AP continues 
to use the wireless settings with which it was last provided.
SUBNET 1
SUBNET 2
AP
CONTROLLER
MANAGED
AP
DHCP
SERVER
+ OPTION 43
CAPWAP
TRAFFIC
(DYNAMIC
IP)
(STATIC IP)