MTUの不一致が原因で、ktls.badAuthのCSMエラーによりSnapMirror処理が失敗し続ける

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環境

ONTAP 9
SnapMirror

問題

SnapMirrorの動作が次のCSMエラーで失敗します。
- CSM: An operation failed due to an ONC RPC failure.
- CSM: Operation referred to a non-existent session.
- CSM: Connection aborted.
- CSM: Request was canceled because of a connection failure.
SNAPMIRROR-AUDIT-LOG-TXT.GZ 宛先でCSMエラーが繰り返し発生

status=Failure message=Transfer failed.(Replication operation request failed from Cluster Id: <SOURCE_CLUSTER_ID>, Node Id: <SOURCE_NODE_ID> to Cluster Id: <DESTINATION_CLUSTER_ID>, Node Id: <DESTINATION_NODE_ID> due to a network error(CSM: Request was canceled because of a connection failure.))

EMS-LOG-FILE.GZ デスティネーションではcsm.sessionFailed とktls.badAuth両方または両方が同時に表示されます。

[<NODE>: CSM_BTLS: ktls.badAuth:notice]: ONTAP received a TLS message with incorrect authentication at local address <DESTINATION_INTERCLUSTER_LIF> local port 24278 from remote address <SOURCE_INTERCLUSTER_LIF> remote port 11105 via IPspace -1. [<NODE>: kernel: csm.sessionFailed:debug]: Cluster interconnect session (req=<NODE>:dblade, rsp=<NODE>:dblade, uniquifier=<UUID>) failed with transport type CT, session tag INTERCLUSTER_PALOMA, record state ACTIVE, CSM error CSM_CONNABORTED, low-level error , socket error 0, and TLS error 2113929224.

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