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After switch reboot, CLUSTER NETWORK DEGRADED ALERT, SwitchIfIslDownWarn_Alert/ClusterIfIslDownWarn_Alert were seen
https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/After_switch_reboot_CLUSTER_NETWORK_DEGRADED_ALERT_seen_SwitchIfIslDownWarn_Alert
After every cluster switch reboot, AutoSupport generates CLUSTER NETWORK DEGRADED and SwitchIfIslDownWarn_Alert errors. The Switch-Health in system health subsystem show reports degraded.
CN1610 ISL port link flapping using optical cables
https://kb.netapp.com/on-prem/Switches/NetApp-KBs/CN1610_ISL_port_link_flapping_using_optical_cables
Link Link Nominal Length Length Bit 50um 62.5um Rate Port Vendor Name [m] [m] Serial Number Part Number [Mbps] Rev Compliance -------- ---------------- --- ---- ---------------- ---------------- -----...Link Link Nominal Length Length Bit 50um 62.5um Rate Port Vendor Name [m] [m] Serial Number Part Number [Mbps] Rev Compliance -------- ---------------- --- ---- ---------------- ---------------- ----- ---- ---------------- 0/1 AVAGO 8 3 XXXXXXXXXXX AFBR-709SMZ-NA3 10300 G4.1 10GBase-SR 0/2 AVAGO 8 3 XXXXXXXXXXX AFBR-709SMZ-NA3 10300 G4.1 10GBase-SR 0/3 AVAGO 8 3 XXXXXXXXXXX AFBR-703SMZ-NA4 10300 G2.3 10GBase-SR 0/4 AVAGO 8 3 XXXXXXXXXXX AFBR-709SMZ-NA2 10300 G4.1 10GBase-SR 0/13 CISCO-FINISAR 8…