1 Reply Latest reply on Sep 6, 2011 12:28 PM by mark_h_@intel

    10G NICs not getting signal detect with fiber

    bjrosen

      I have a couple of e10g42btda dual SFP+ 10G NICs in SL6.2 Linux boxes. When I connect the cards together with passive copper cables the LEDs come on and the connections are available in Linux. However when I connect the cards together with fiber nothing happens.

       

      I'm using Finisar FTLX8571D3BCL tranceivers and 2M 50/125 LC-LC fiber cables. I know the cables are OK because I'm able to run traffic through them from an Altera FPGA card. I've tried reversing the connections and that didn't help.

       

      Is there a switch on the cards to enable fiber connections or is there a configuration setting in Linux that I have to use to enable fiber.?

       

      BTW SL6.2 (RHEL 6.2 clone) uses a 2.6.32 kernel.