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Multiple NetApp FCP ports flapping to single Cisco Switch
https://kb.netapp.com/on-prem/Switches/Cisco-KBs/Multiple_NetApp_FCP_ports_flapping_to_single_Cisco_Switch
Applies to Cisco FCP ONTAP FCP Issue Multiple ports across 2 NetApp storage nodes show link disconnected All NetApp storage ports connect to same port group in Cisco Switch

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