Cluster switch repeats link up and down

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Category:: fabric-interconnect-and-management-switches

Specialty:: hw

Last Updated:

Applies to

FAS8200
CN1610
ONTAP 9

Issue

CN1610 cluster switch repeats link up and down.
EMS log reports the following information.

Example:

Wed Mar 25 12:06:18 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0b: Link down, check cable. Wed Mar 25 12:06:18 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0a: Link down, check cable. Wed Mar 25 15:56:12 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0b: Link down, check cable. Wed Mar 25 15:56:12 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0a: Link down, check cable. ... ... Sun Mar 29 13:36:20 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0b: Link down, check cable. Sun Mar 29 13:36:20 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0a: Link down, check cable. ... ... Mon Mar 30 19:02:47 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0b: Link down, check cable. Mon Mar 30 19:02:47 JST [cluster01: kernel: netif.linkDown:info]: Ethernet e0a: Link down, check cable

show-tech-support shows the following information on the cluster switch.

Example:

[2020-03-23 10:21:38.855] 0 Mar 23 07:23:27 2020 Link Up: 0/2 [2020-03-23 10:21:38.855] 1 Mar 23 07:23:26 2020 Link Down: 0/2 [2020-03-23 10:21:38.855] 2 Mar 21 23:36:37 2020 Link Up: 0/2 [2020-03-23 10:21:38.855] 3 Mar 21 23:36:36 2020 Link Down: 0/2 [2020-03-23 10:21:38.855] 4 Mar 21 22:50:45 2020 Link Up: 0/2 [2020-03-23 10:21:38.855] 5 Mar 21 22:50:44 2020 Link Down: 0/2 [2020-03-23 10:21:38.855] 6 Mar 19 22:49:47 2020 Link Up: 0/2 [2020-03-23 10:21:38.855] 7 Mar 19 22:49:46 2020 Link Down: 0/2 [2020-03-23 10:21:38.855] 8 Mar 13 08:53:30 2020 Link Up: 0/2 [2020-03-23 10:21:38.855] 9 Mar 13 08:53:30 2020 Link Down: 0/2 [2020-03-23 10:21:38.855] 10 Mar 13 08:26:28 2020 Link Up: 0/2 [2020-03-23 10:21:38.855] 11 Mar 13 08:26:27 2020 Link Down: 0/2 [2020-03-23 10:21:38.871] 12 Mar 9 06:07:50 2020 Link Up: 0/2 [2020-03-23 10:21:38.871] 13 Mar 9 06:07:50 2020 Link Down: 0/2 ... [2020-03-23 10:21:38.933] 102 Jul 16 13:38:14 2019 Link Down: 0/2 [2020-03-23 10:21:38.933] 103 Jul 16 13:38:14 2019 Link Down: 0/1 [2020-03-23 10:21:38.933] 104 Jul 16 13:38:12 2019 Link Up: 0/2 [2020-03-23 10:21:38.933] 105 Jul 16 13:38:12 2019 Link Up: 0/1 [2020-03-23 10:21:38.933] 106 Jul 16 13:38:11 2019 Link Down: 0/2 [2020-03-23 10:21:38.933] 107 Jul 16 13:38:11 2019 Link Down: 0/1 [2020-03-23 10:21:38.933] 108 Jul 16 13:38:08 2019 Link Up: 0/2 [2020-03-23 10:21:38.933] 109 Jul 16 13:38:08 2019 Link Up: 0/1