Emulex OneConnect be2net interface dropping packets and 'rx_drops_no_frags' increases when Jumbo Frames are being used

Solution Verified - Updated -


  • System with Emulex OneConnect be2net network interface faces connection packet loss issues or slow speed performance over bulk data transfer TCP streams such as SSH, NFS, CIFS, Samba, SMB, backup traffic, file sharing, etc.

  • ethtool statistics shows drops in rx_drops_no_frags counter:

$ ethtool -S eth0 | grep drops
    rxq1: rx_drops_no_frags: 998210
  • ifconfig output shows dropped packets in RX as below:
# ifconfig eth0 | egrep "MTU|dropped"
          RX packets:5089235317 errors:0 dropped:1000063 overruns:0 frame:0


  • Red Hat Enterprise Linux (all versions)
  • Emulex OneConnect network interface card (NIC) using be2net kernel driver module
  • Jumbo Frames (MTU 9000) or any packet size over 2048 bytes

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