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Snapmirror fails with error 'connection failure'

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Applies to

  • ONTAP 9
  • SnapMirror

Issue

  • Snapmirror Audit log:
[DATE]:XX Operation-Uuid=XX Group=none Operation-Cookie=0 action=Defer source=SVM1:vol1 destination=SVM2:vol1 status=Failure message=Transfer failed.(Replication operation integrity check failed due to transmission glitch or network issue.)
[DATE]:XX Operation-Uuid=XX Group=none Operation-Cookie=0 action=Defer source=SVM1:vol1 destination=SVM2:vol1 status=Failure message=Transfer failed.(Checksum mismatch(Replication engine error))
[DATE]:XX Operation-Uuid=XX Group=none Operation-Cookie=0 action=End source=SVM1:vol1 destination=SVM2:vol1 status=Failure message=Transfer failed.(Replication operation request failed from Cluster Id: XX, Node Id: XX to Cluster Id: XX, Node Id: XX due to a network error(CSM: Request was canceled because of a connection failure.)
  • EMS log might be seen:

[Cluster: kernel: netif.tcp.conn.bad.checksum:error]: TCP packet with bad checksum detected on port XX.
The packet arrived on connection with source address XX.XX.XX.XX and destination_address XX.XX.XX.XX.

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