Chapter 5 Network
NWA5000 / WAC6500 Series User’s Guide
59
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 30
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.
5.1.2 What You Can Do in this Chapter
• The
IP Setting
screen (
) configures the NWA/WAC’s LAN IP address.
• The
VLAN
screen (
) configures the NWA/WAC’s VLAN settings.
• The
AC
(AP Controller)
Discovery
screen (
) configures the NWA/WAC’s
AP Controller settings.
Summary of Contents for NWA5121-N
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