Are Crossover Cables supported for Red Hat High Availability cluster interconnect?

Solution Verified - Updated -

Issue

  • Does Red Hat support the use of crossover cables for the cluster heartbeat network in a two node cluster?
  • Does Red Hat support the use of direct copper IB connection (without switches)?

Environment

  • Red Hat Cluster Suite 4+
  • Red Hat Enterprise Linux Server 5, 6, 7 (with the High Availability Add on)
  • Red Hat High Availability Cluster with 2 nodes
  • 2 cluster nodes that are connected with a crossover cable that is used for internal cluster communication (ie. cable directly from one node to the other without passing through a network switch or direct copper IB connection without switches).

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