felix wrote:Not sure I understand your reply. Both machine are plugged into the switcher. Here is my connections:
Time Warner cable modem>Airport Extreme>Netgear switcher= PS3,EVA8000,Network cameras, Mac Pro, Control 4 and etc.
I did indeed interpret your setup incorrectly, and you should be fine then. The only thing I can think of is that the switch is somehow limiting UPnP/M-Search announcements, but usually switches allow everything through on the same level. What's the specific model of the switch? I guess also try disabling the Mac software firewall for a bit, although that shouldn't affect your outbound connection from the Mac to the PS3.