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    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Ports_report_down_due_to_SFPs_with_different_speed_compatibility_on_storage_and_switch_end
      Applies to AFF/FAS ONTAP 9 Issue Ports report down when SFPs with different speed compatibility are used on each end (storage port & switch port) sysconfig -a slot 1: Quad 10G/25G Ethernet Controller ...Applies to AFF/FAS ONTAP 9 Issue Ports report down when SFPs with different speed compatibility are used on each end (storage port & switch port) sysconfig -a slot 1: Quad 10G/25G Ethernet Controller CX5-Mezz e1b MAC Address: d0:39:ea:c2:b0:86 (auto-unknown-fd-down) e1a MAC Address: d0:39:ea:c2:b0:87 (auto-unknown-fd-down) SFP Vendor: FINISAR CORP. SFP Part Number: FTLF8536P5BCL SFP Serial Number: XXXXXXXX 25GB SFPs were used on controller side, 10GB SFPs were used on switch side