3 Replies Latest reply on Oct 5, 2017 6:24 PM by Intel Corporation

    XXV710 for 25GbE SFP28 recording CRC when using 25G-SR optics

    Arod

      The question is is there a way to check the signal on the INTEL side?  The remote end is set to RS-FEC.  No errors are seen on the switch, only on the intel NIC.

      I also notice more errors with are seen when both interfaces are active in file transfers and when switch is in a forwarding mode of cut-through.

      I don't see the issue when I use a copper SFP28 3 meter cable

       

      System is running CentOS Linux release 7.0.1406

      02:00.0 Ethernet controller: Intel Corporation Device 158b (rev 02)

       

      netstat -i

      Kernel Interface table

      Iface      MTU    RX-OK RX-ERR RX-DRP RX-OVR    TX-OK TX-ERR TX-DRP TX-OVR Flg

      eno1      1500 39132473      0   1968 0         77116      0      0      0 BMRU

      eno2      1500        0      0      0 0             0      0      0      0 BMU

      ens2f0    1500 660153582805  54692 220376601 0      951323385811      0      0      0 BMU

      ens2f1    1500 296165797983  79958 51730143 0      370485320414      0      0      0 BMRU

      lo       65536 691346856      0      0 0      691346856      0      0      0 LRU

      virbr0    1500        0      0      0 0             1      0      0      0 BMU

       

       

      Any suggestions would be appreciated.