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CONTAP-278138: Bus overruns in cluster ports and output discards in cluster switches

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ontap-9
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core
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Issue

  • Cluster ports with increasing RECEIVE "Bus overruns" counters. Example:
  ::> system node run -node <node_name> -command ifstat e0a
  ...
  -- interface  e0a  (1 hours, 2 minutes, 3 seconds) 
  RECEIVE
  ...
  Bus overruns:      999  | ...


  • The cluster has nodes with different cluster port speeds (25G/40G/100G)
  • No performance impact noticed in the storage system

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