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    • One HA interconnect link shows as down in FAS 8080
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/One_HA_interconnect_link_shows_as_down_in_FAS_8080
      Applies to FAS8080 Issue One HA interconnect link is down: Netapp1::*> system ha interconnect status show Node: sc-cdot18-01 Node: sc-cdot18-02 Link 0 Status: down Link 1 Status: up Is Link 0 Active: ...Applies to FAS8080 Issue One HA interconnect link is down: Netapp1::*> system ha interconnect status show Node: sc-cdot18-01 Node: sc-cdot18-02 Link 0 Status: down Link 1 Status: up Is Link 0 Active: false Is Link 1 Active: true IC RDMA Connection: up 2 entries were displayed.
    • How to locate HA interconnect ports on AFF A400, AFF C400, ASA A400, ASA C400, FAS8300, FAS8700
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_locate_HA_interconnect_ports_on_AFF_A400_AFF_C400_ASA_A400_ASA_C400_FAS8300_FAS8700
      Applies to AFF A400, AFF C400 ASA A400, ASA C400 FAS8300, FAS8700 Description How to locate the HA interconnect ports on AFF A400, AFF C400, ASA A400, ASA C400, FAS8300 and FAS8700 storage systems.
    • Takeover status is flapping between Disabled and Enabled due to unstable HA interconnect link
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Takeover_status_is_flapping_between_Disabled_and_Enabled_due_to_unstable_HA_interconnect_link
      The failover is disabled and enabled automatically between a HA pair due to unstable HA interconnect link: [Netapp1-01: cf_main: cf.fsm.takeoverByPartnerDisabled:error]: Failover monitor: takeover of ...The failover is disabled and enabled automatically between a HA pair due to unstable HA interconnect link: [Netapp1-01: cf_main: cf.fsm.takeoverByPartnerDisabled:error]: Failover monitor: takeover of Netapp1-01 by Netapp1-02 disabled (unsynchronized log) [Netapp1-01: cf_main: cf.fsm.takeoverByPartnerEnabled:notice]: Failover monitor: takeover of Netapp1-01 by Netapp1-02 enabled
    • Excessive link errors on A700 interconnect port e4e
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Excessive_link_errors_on_A700_interconnect_port_e4e
      After ONTAP version upgraded from 9.11.1 to 9.14.1.P9, interconnect port e4e start to record CRC error on ifstat -a output. Total frames: 316k | Frames/second: 69 | Total bytes: 1463m Bad UDP cksum: 0...After ONTAP version upgraded from 9.11.1 to 9.14.1.P9, interconnect port e4e start to record CRC error on ifstat -a output. Total frames: 316k | Frames/second: 69 | Total bytes: 1463m Bad UDP cksum: 0 | Bad UDP6 cksum: 0 | Bad TCP cksum: 0 Bad TCP6 cksum: 0 | Mcast v6 solicit: 0 | Lagg errors: 0 Total frames: 275k | Frames/second: 60 | Total bytes: 48676k TSO6 bytes: 0 | HW UDP cksums: 46 | HW UDP6 cksums: 0 HW TCP cksums: 273k | HW TCP6 cksums: 0 | Mcast v6 solicit: 0
    • Takeover due to 'no heartbeat was detected from partner node'
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Takeover_due_to_no_heartbeat_was_detected_from_partner_node
      [Node-01: ctrl_hb_port_ic0a: ctrl.rdma.heartBeat:info]: HA interconnect: Missed heartbeat to 192.0.1.5. [Node-01: cf_main: cf.fsm.takeoverByPartnerDisabled:error]: Failover monitor: takeover of Node-0...[Node-01: ctrl_hb_port_ic0a: ctrl.rdma.heartBeat:info]: HA interconnect: Missed heartbeat to 192.0.1.5. [Node-01: cf_main: cf.fsm.takeoverByPartnerDisabled:error]: Failover monitor: takeover of Node-01 by Node-02 disabled (HA interconnect error. Verify that the partner node is running and that the HA interconnect cabling is correct, if applicable. [Node-01: cf_main: cf.fsm.takeoverCountdown:info]: Failover monitor: takeover scheduled in 10 seconds
    • Rx/Tx errors on switch interlink after upgrade to 3.9.2400
      https://kb.netapp.com/on-prem/solidfire/Element_OS_Kbs/Rx_Tx_errors_on_switch_interlink_after_upgrade_to_3.9.2400
      Applies to Mellanox SN2010 NetApp HCI Rx/Tx errors in (Inter Peer Link) IPL after switch upgrade to 3.9.2400 MTU inconsistency WebGUI/CLI will show 9216 MTU but members of port channel HW status show ...Applies to Mellanox SN2010 NetApp HCI Rx/Tx errors in (Inter Peer Link) IPL after switch upgrade to 3.9.2400 MTU inconsistency WebGUI/CLI will show 9216 MTU but members of port channel HW status show 1522 Admin state : Enabled Operational state : Up MTU : 9216 bytes (Maximum packet size 9238 bytes) 20|0x10500 | Up| Up| Plugged| Speed|0x00B00000|0x00100000| 100GB_CR4| Post-FEC| 1522 Increase in oversize packets on the switch Eth1/20: 1610 oversize packets Eth1/22: 1189 oversize packets
    • Takeover disabled due to interconnect down
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Takeover_disabled_due_to_interconnect_down
      Alert received that takeover is unable to be performed due to interconnect link being down [Node-01: cf_main: cf.fsm.takeoverOfPartnerDisabled:error]: Failover monitor: takeover of Node-01 disabled (H...Alert received that takeover is unable to be performed due to interconnect link being down [Node-01: cf_main: cf.fsm.takeoverOfPartnerDisabled:error]: Failover monitor: takeover of Node-01 disabled (HA interconnect error. Verify that the partner node is running and that the HA interconnect cabling is correct, if applicable. [Node1: gop_eq: ic.linkStatusChange:info]: HA interconnect: Port ic0a link is down. [Node1: gop_eq: ic.linkStatusChange:info]: HA interconnect: Port ic0a link is up.