What You Can Do In This Chapter - ZyXEL Communications NWA1123ACPRO-EU0101F User Manual

• Get the controller's IP address from a DNS server SRV (Service) record.
• Broadcasting to discover the controller within the broadcast domain.
Note: The AP controller needs to have a static IP address. If it is a DHCP client, set the DHCP
server to reserve an IP address for the AP controller.
CAPWAP and IP Subnets
By default, CAPWAP works only between devices with IP addresses in the same subnet.
However, you can configure CAPWAP to operate between devices with IP addresses in different
subnets by doing the following.
• Activate DHCP. Your network's DHCP server must support option 138 defined in RFC 5415.
• Configure DHCP option 138 with the IP address of the CAPWAP AP controller on your network.
DHCP Option 138 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 39 CAPWAP and DHCP Option 138
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.
• 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.

6.1.2 What You Can Do in this Chapter

• The IP Setting screen
• The VLAN screen
Chapter 6 Network
(Section 6.2 on page
(Section 6.3 on page 71) configures the NWA/WAC's VLAN settings.
NWA / WAC Series User's Guide
69
70) configures the NWA/WAC's LAN IP address.