Solarflare NIC dropping packets and incrementing the rx_tobe_disc counter

Solution In Progress - Updated -

Issue

  • This friday we started receiving alerts from our production hosts stating, that there are multiple transmission errors on RX network traffic. There are no errors reported on the the switches.
  • We can see rx_tobe_disc errors clocking up on the SFC9020 Nic. What do these errors mean?

Environment

  • Red Hat Enterprise Linux 5.6
    • kernel 2.6.18-238.el5
  • Solarflare SFC9020 NIC

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