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CONTAP-216784: X50131A Ethernet port will not link up via 40/100G copper cables when connected to Cisco 400GbE switch

  1. Last updated
    Jun 6, 2025
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Category:
ontap-9
Specialty:
core
Last Updated:
6/6/2025, 1:50:43 AM

Issue

  • When using 40GBASE-CR4 or 100GBASE-CR4 copper cables to connect an X50131A QSFP56 NIC port to a Cisco Nexus C9316D-GX 400GbE switch, the link might not come up. 
  • The switch port speed is set to "auto" (autonegotiation is enabled)

 

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