10 Replies Latest reply on Jan 17, 2017 9:31 PM by Intel Corporation

    Intel I210: Excessive Collisions on TX

    mkotulla

      Hi.

       

      We've met some issue with I210 controller.
      I210 is used in linux environment (MSI-X, multiqueue).

       

      RX queues seems to be working (we can receive packets).

      But we've found that each and every transmitted TX descriptor contains E1000_TXD_STAT_EC (i.e 0x00000002, Excess Collisions) bit in status field.

       

      So, what are the possible reasons of "Excess Collision" on every TX packet?

       

       

      Thanks in advance.