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NIC ports down on the nodes due to data switch reboot

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Applies to

  • ONTAP 9
  • FAS/AFF Systems
  • Network Interface Card (NIC)

Issue

  • Multiple NIC ports configured for data go down at the same time on all the nodes.
  • Event logs report the following:
Wed Mar 22 19:20:52 -0600 [Node-01: intr: netif.linkDown:info]: Ethernet e3a: Link down, check cable.
Wed Mar 22 19:20:52 -0600 [Node-01: intr: netif.linkDown:info]: Ethernet e3c: Link down, check cable.
                           
Wed Mar 22 19:20:52 -0600 [Node-02: intr: netif.linkDown:info]: Ethernet e3a: Link down, check cable.
Wed Mar 22 19:20:52 -0600 [Node-02: intr: netif.linkDown:info]: Ethernet e3c: Link down, check cable.
 
Wed Mar 22 19:45:36 -0600 [Node-01: intr: netif.linkDown:info]: Ethernet e11a: Link down, check cable.
Wed Mar 22 19:45:36 -0600 [Node-01: intr: netif.linkDown:info]: Ethernet e11c: Link down, check cable.
                           
Wed Mar 22 19:45:36 -0600 [Node-02: intr: netif.linkDown:info]: Ethernet e11a: Link down, check cable.
Wed Mar 22 19:45:36 -0600 [Node-02: intr: netif.linkDown:info]: Ethernet e11c: Link down, check cable.
  • All the ports that go down are connected to the same data switches:

cluster1::> network device-discovery show

Node/       Local  Discovered
Protocol    Port   Device                    Interface         Platform
----------- ------ ------------------------- ----------------  ----------------
Node-01/cdp
            e3a    5010-SW1-NX.example.com(SSXXXXXX1PD)
                                          Ethernet100/1/17  N5K-C5010P-BF
            e3c    5010-SW1-NX.example.com(SSXXXXXX1PD)
                                          Ethernet100/1/18  N5K-C5010P-BF
            e11a   5010-SW2-NX.example.com(SSXXXXXX1FD)
                                          Ethernet100/1/2   N5K-C5010P-BF
            e11c   5010-SW2-NX.example.com(SSXXXXXX1FD)
                                          Ethernet100/1/3   N5K-C5010P-BF
Node-02/cdp
            e3a    5010-Sw1-NX.example.com(SSI142311PD)
                                          Ethernet100/1/19  N5K-C5010P-BF
            e3c    5010-Sw1-NX.example.com(SSI142311PD)
                                          Ethernet100/1/20  N5K-C5010P-BF
            e11a   5010-SW2-NX.example.com(SSI142311FD)
                                          Ethernet100/1/4   N5K-C5010P-BF
            e11c   5010-SW2-NX.example.com(SSI142311FD)
                                          Ethernet100/1/5   N5K-C5010P-BF
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