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SnapMirror failures due to network bandwidth limit enforcement

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Applies to

  • ONTAP 9.x
  • SnapMirror

Issue

  • SnapMirror replication fails with the errors below or other network related errors:
CSM: Request was canceled because of a connection failure.
CSM: Operation referred to a non-existent session.
  • There is bandwidth limit allocated for SnapMirror
  • A device in the network enforcing this limit can drop SnapMirror packet when the limit is exceeded
  • Or the network device might not process the packets fast enough and they can be tail dropped

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