We have a brand new IBM RackSwitch G8316. The settings are more or less the defaults (we did change the IP address on the switch in order to access the admin interface, but that's basically it). I purchased three ConnectX-3 VPI cards to put into two Windows 7 PCs and one CentOS box. We've got the WinOFED drivers (v 5.10) installed in the Windows boxes, cards are recognized and everything seems to be ok on the software side. Haven't done the Linux box yet. We are using these cables. And one of these.
* When the Windows machines are connected to the switch, the switch isn't seeing them, no lights on the ConnectX cards either.
* When the Windows machines are connected to each other, they light up, and they see each other via arp in the windows command prompt
* When one port of the switch is plugged into another port, forcing a loop, the switch recognizes the connection.
But when the Windows machines are plugged into the switch - nothing. Windows is reporting that the cable is unplugged. It is not.
Any idea what might be happening here? Thoughts on how to proceed with testing?