The DHCP Option 43 feature helps the Access Point (AP) to associate with the Wireless controller (WLC) in an L3 environment (AP in one network and WLC in another network). The AP boots up, performs POST, then sends a DHCP request. The switch sends out a DHCP offer; an IP address to use, a default gateway to use, and also the 43 TLV option. The TLV contains the IP address of … [Read more...]