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Cisco Bug: CSCtd73631 - Nexus Port with Copper SFP May Show Link Up Status With No Cable

Last Modified

Feb 04, 2017

Products (12)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco MDS 9124 Multilayer Fabric Switch
  • Cisco MDS 9222i Multiservice Modular Switch
  • Cisco MDS 9216i Multilayer Fabric Switch
  • Cisco MDS 9134 Multilayer Fabric Switch
  • Cisco MDS 9509 Multilayer Director
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco MDS 9506 Multilayer Director
  • Cisco MDS 9124e 4G FC HP Blade Switch
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Known Affected Releases


Description (partial)


On a Nexus 7000 switch with a Copper SFP installed, the link status may be declared up even if there is no cable attached to the trasceiver.


This only occurs if the speed is hard coded and auto-negotiation is disabled


Configure the interface for auto-negotiation. 
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