10GbE NIC limited to 100MB Half-Duplex on RHEL

Solution Verified - Updated -

Issue

  • We are experiencing a problem in configuring the eth0 interface on a server.  The ethtool command shows 100/half.  The server has the latest RHEL5.5 patches as well as HP Firmware patches.

Environment

  • Red Hat Enterprise Linux (RHEL)
  • 1GbE or 10GbE NIC

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