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Re: How to stack two Voltaire 4036

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Hi andre, thank you very much for taking the time to answer me. We actually have a quite simple infrastructure but still it give as hard time in tuning it up. I plugged everything in a mash fashion: we have two hyper-v servers, two storage servers, two Voltaire switches (we initially had one, but recently we added one more for redundancy and hoping to get better performance). Each of these four servers is connected to both switches. Then, the two switches are interconnected with a single link. Not sure what is wrong in this topology but ipref tests start at a speed of 10Gbs and goes down to 1 Gbs after 2-3 minutes. We use Melanox ConnectX in our servers, which can handle up to 40 Gbs. The jumbo frame is set at 4092 in all interfaces. Plenty of RAM, good CPUs in servers. I really can't explain this behavior. I was hopping to get something close to 40 Gbs after mashing all these devices, but now I would be happy to see a solid 10Gbs, with no fluctuation


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