Network interfaces re-negotiate speed and duplex under heavy load

Solution Unverified - Updated -

Issue

  • All our nic cards are autonegotiating under heavy load
  • High-volume NICs that lose sync when they are in auto-detect mode, and often renegotiate at the incorrect speeds and/or duplex.
  • The network and backup team came to us asking to force to full 1gb the backup nic cards

Environment

  • Red Hat Enterprise Linux
  • Gigabit network interfaces with auto-negotiation on

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