2 Replies Latest reply on Nov 30, 2015 7:41 AM by LSS_Engineer

    82599EB 10Gb SFP+ NIC Problem

    LSS_Engineer

      After a day and a half of troubleshooting why my NIC was showing down in VMware ESXi 6 even though it had green lights on both ends of the fiber and my Cisco 8500 switch said the circuit was up-up, I finally found the answer.

       

      Gee, the Cisco SFP-10G-LRM SFP+ module I use throughout my network isn't compatible in the Intel NIC.  Apparently I need an Intel E10GSFPLR SFP+ module in the NIC. 

       

      Of course this should work with the SFP-10G-LRM on one end and the E10GSFPLR on the other end, but can anyone verify this?

        • 1. Re: 82599EB 10Gb SFP+ NIC Problem
          Sandy_Intel

          Hi LSS_Engineer,

           

          Yes, the Intel Adapter is compatible with Intel SFP+ modules.  With regards to your question, the E10GSFPLR module supports standard 10GBASE-LR 10G Ethernet.  If your Cisco* switch can support 10GBASE-LR standard, then it is compatible.  However, you may need to use Cisco's 10GBASE-LR module for your switch.

           

          Hope this helps.

           

          Sincerely,

           

          Sandy

          • 2. Re: 82599EB 10Gb SFP+ NIC Problem
            LSS_Engineer

            Thanks Sandy,

             

            They way I now understand this is that I have two choices:

             

            1.  Replace my Cisco SFP-10G-LRM modules with SFP-10G-LR modules on the switch and install an Intel E10GSFPLR module in the Intel NIC.  This requires changing the MM OM3 fiber to standard SM.

             

            2.  Replace my Cisco SFP-10G-LRM modules with SFP-10G-SR modules and install and Intel E10GSFPSR module in the Intel NIC and retain the existing MM OM3 fiber.