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shaned

20 posts

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#115068 12-Mar-2013 17:12
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Hi everyone

We have a server with on-board 10GbE SFP ethernet but a switch with only 1GbE SFP ports and we're unable to get traffic over the link. Using Linux ethtool I can set the server to run the interface at 1Gb (ethtool -s eth0 speed 1000) but without luck. We're using a SFP+ cable which I believe is backward compatible with SFP.

The server is a HP DL380p Gen8 with NetXtreme II 10GbE controllers.
The switch is a Cisco 3560.

Neither supplier has been much help.

Hopefully someone out there works with this stuff every day and knows right off what we're doing wrong. Any help is appreciated.

Thanks
  Shane

P.S. What's the point of (expensive) SFP ports that only run at 1GbE anyway?


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LennonNZ
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  #778809 12-Mar-2013 21:24
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Ah.. sounds like a TwinAx Cable. (10GSFP+Cu) Copper Cable with Directly Attached SPF+'s at each end.

Like this?? http://www.amazon.com/Diablo-Cable-24AWG-Copper-Twinax/dp/B005WX2FSU

You'll need a switch which has SPF+ Slots. Cheap? Nope..

I don't even think your 3560 would have 10G of backplane anyway...

You should be able to find a switch with 2 to 4 10G SPF+ Slots and 24 GigE Copper quiet easily..



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