DHCP Option 43
When an AP boots it needs an IP address. Then it runs the well-known hunting algorithm to discover a candidate WLC. DHCP option is part of hunting algorithm where it use DHCP option 43 to serve the WLCs IP address. You can find below how to configure option 43 in DHCP scope. In case of 1 WLC exist on the network the network we must add F104 < IP IN HEX OF WLC1 > Example WLC IP: 10.10.30.100 < 0a0a1e64 > <---HEX of 10.10.30.100 F104 0a0a1e64 <---How DHCP option 43 should be In case of 2 WLCs exists on the network the network we must add F108 < IP IN HEX OF WLC1 >< IP IN HEX OF WLC2 > Example WLC 1: 10.10.30.100 < 0a0a1e64 > <---HEX of 10.10.30.100 WLC 2: 10.10.40.100 < 0a0a2864 > <---HEX of 10.10.40.100 F108 0a0a1e640 a0a2864 ...