Problem with HP network card

[saman]

I have HP DL580 server machines with HP NC522SFP Dual Port 10GbE server adapter that are connected to cisco nexus switch, but my problem is appear when i have switched to this network. The connection between servers is fiber cable. but it is not work properly. i cant use more than 0.55 percent of 10G switch capability. Is there anybody can help me to solve this problem.

[Rune J. Winje]

Hi,
make sure you are using the correct type of fiber cable first.

There is SM and MM type cables (Single Mode and MultiMode). Look for print on the cable itself. If you use SM cable when you should have used MM cable then what you observe could fit the symptoms.

Check table 3 here for cables
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/ps9512/Data_Sheet_C78-437757.html

Generally SM cable is used for km-distances and is an expensive type of cable too. For patching within a data center the MM cable is much more common and probably what the switch to server cable should be anyway.


Cheers,
Rune