I have two AP1240 on remote office, which is connected to company headquarter by WAN. AP's were converted from standalone to lightweight mode without problem, but they now cannot join WLC, which is in company headquarter. Degug lwapp on WLC shows me this:
*Jan 28 17:00:36.202: 00:1d:e5:83:f3:d0 Received LWAPP DISCOVERY REQUEST from AP 00:1d:e5:83:f3:d0 to 00:1e:4a:fe:a0:80 on port '29'
*Jan 28 17:00:36.202: Discarding discovery request in LWAPP from AP 00:1d:e5:83:f3:d0 supporting CAPWAP
and no response from WLC occur, no discovery response is send to AP.
Connectivity between WLC and AP is OK, I can ping each other. I use WLC discovery through broadcast (due to customer request I cannot use Priming, DHCP option 43 nor DNS discovery mechanism), on remote office router is set ip helper-address to IP address of management interface of WLC.
I have two identical AP's on hedquarter and they can join to WLC without problem.
Could someone please advise me what I do wrong? Thanks in advance.