bnx2 Interface Intermittently hangs and rx_fw_discards is increasing on RHEL6.

Solution Verified - Updated -

Issue

  • network connection hangs intermittently, ifdown/ifup cycle restores normal operation
  • 'ethtool -S <interface>' shows an increasing number for rx_fw_discards

Environment

  • Red Hat Enterprise Linux (RHEL) 6.0, 6.1

  • several kernels, including the RHEL6.1 GA kernel

  • HP Proliant DL360G5

  • Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
  • when the problem occurs interrupts for the interface do not count up when packages are adressed to the interface (the assigned ip)

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