H - strange problem this one. Got a 2830n and have 3 devices connected into LAN ports. If i connect a PC into the 4th LAN port i can ping all 3 devices no probs from PC. if i disconnect pc from 2830 LAN port and connect via wifi, i can ping 2 devices but not the 3rd. If i use wifi to access the draytek page from pc i can do ping from draytek to all 3 devices.

Have tried different cables and swapping the devices round to different 2830 LAN ports but same behavior occurs. Also other wifi devices (ipad, iphone) cant ping the 3rd device but can ping other 2 and get to internet etc. Not using vlans and only 1 SSID in use.

Suggestions?