EF80 Port Link Flapping with Cisco 9336C-FX2 Switch

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Category:: e-series-systems

Specialty:: esg

Last Updated:

Applies to

EF80
SANtricity OS 12.00R0
HIC 111-05683
Cisco 9336C-FX2 Switch with NX-OS 10.5(4)

Issue

NVMe over RoCE host port link flapping when connecting EF80 storage to Cisco 9336C-FX2 switch.
Frequent InfiniBand port up/down events in MEL logs.

A:3/31/26, 10:33:46 AM (10:33:46) 452 1301 InfiniBand port up - Shelf 99, Bay A B:3/31/26, 10:31:12 AM (10:31:12) 451 1301 InfiniBand port up - Shelf 99, Bay B B:3/31/26, 10:13:27 AM (10:13:27) 450 1302 InfiniBand port down - Shelf 99, Bay B B:3/31/26, 10:13:27 AM (10:13:27) 449 1301 InfiniBand port up - Shelf 99, Bay B A:3/31/26, 9:24:01 AM (09:24:01) 448 1302 InfiniBand port down - Shelf 99, Bay A A:3/31/26, 9:24:01 AM (09:24:01) 447 1301 InfiniBand port up - Shelf 99, Bay A A:3/31/26, 9:11:52 AM (09:11:52) 446 1301 InfiniBand port up - Shelf 99, Bay A B:3/31/26, 8:55:06 AM (08:55:06) 445 1302 InfiniBand port down - Shelf 99, Bay B B:3/31/26, 8:55:06 AM (08:55:06) 444 1301 InfiniBand port up - Shelf 99, Bay B