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Monitoring software shows loss_of_sync of FCP adapter

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Category:
ontap-9
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san
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Applies to

  • ONTAP 9
  • FAS8300
  • FCP
  • LogicMonitor

Issue

  • Monitoring software is reporting intermittent loss_of_sync for a single FCP adapter:
NetApp Fibre Channel Adapter node2/2c on cluster1 has reported a synchronization loss, placing the adapter into warn state.
This adapter has lost synchronization a total of 1565.0 times. This is commonly caused by link failures.
  • Adapter is online
  • Power levels are fine
  • No errors in EMS
  • Attached Brocade switch does not show errors in porterrshow and ok power levels
  • SFPs and cables were cleaned
  • Cable was replaced
  • Issue can be seen on the loss_of_sync counter of the fcp_port object:
time interval                         fcp_port      fcp_port
                                      instance  loss_of_sync
 
------------------------------------  --------  ------------
2025-02-06 19:16:43 - 19:21:43+01:00  port.2c              1
2025-02-06 20:16:43 - 20:21:43+01:00  port.2c              1
2025-02-06 21:16:43 - 21:21:43+01:00  port.2c              1
2025-02-06 23:21:43 - 23:26:43+01:00  port.2c              1
2025-02-07 01:41:43 - 01:46:43+01:00  port.2c              1
2025-02-07 02:21:43 - 02:26:43+01:00  port.2c              1
2025-02-07 04:01:43 - 04:06:43+01:00  port.2c              1

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