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Why does FEC need to be disabled on 25G MetroCluster IP interconnect ports

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metrocluster
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Applies to

  • MetroCluster IP
  • Cisco IP switches
  • 25G Interconnect ports

Answer

  • FEC comes with a small latency overhead so it's disabled to minimize latency
  • Enabling FEC when using 25G has been observed to cause unpredictable link instability

Additional Information

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