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40/100G Ethernet T62100-CR does not auto negotiate with Nexus 9k data switch

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Applies to

  • 40/100G Ethernet T62100-CR (X1146A card)
  • Cisco N9K-C9336C-FX2  switch

Issue

  • When auto negotiate is enabled, Ethernet port on the X1146A card will not link up with:

N9K-C9336C-FX2 data switch

Port speed must be hard set to come up

  • This can also occur after switch firmware upgrade
  • ONTAP will report card link down in EMS:

 [?]  Thu Sep 14 22:16:04 +0000 [cluster-01: intr: netif.linkDown:debug]: Ethernet e3a: Link down, check cable.
 [?]  Thu Sep 14 22:16:04 +0000 [cluster-01: intr: net.ifgrp.lacp.link.inactive:debug]: ifgrp a0a, port e3a has transitioned to an inactive state. The interface group is in a degraded state.
 [?]  Thu Sep 14 22:16:04 +0000 [cluster-01: vifmgr: vifmgr.portdown:debug]: A link down event was received on node cluster-01, port e3a.

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