Here is what we started with. Three Dell Poweredge servers each with two Mellanox ConnectX-3 cards. On each server one card goes to an Extreme switch using the SFP+ cables. And on each server the other card goes to another Extreme switch with another set of SFP+ cables for redundancy. All working as designed.
Then the office moved to a new location. At the new site, the cards in slot1 of all three servers show cable not connected. Odd that three cables would suddenly fail. However here is the only common factor we know. The Extreme switch they are connected into had an issue after the move and the firmware had to be reloaded again to get it to boot.
I've eliminated the cables by replacing them. Moved the connection to other ports on the switch. Tested the ports in question using another device to see the link indicator light up. I can't explain how three mellanox cards that worked before a move now show cable not connected.
Any suggestions?
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