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Cisco Bug: CSCum96228 - After Nexus-7710 2nd SystemFan tray failure node shuts down & wont boot

Last Modified

Feb 10, 2017

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases


Description (partial)

On Nexus-7710, after double System-Fantray failure or removal , node shuts down & wont boot without manual power switch ON

The following procedure was performed :

1. Fan1(sys_fan1) model N77-C7710-FAN was removed & node was observed running.
2. Fan2(sys_fan2) model N77-C7710-FAN was removed & wait till node automatically shuts down
3. After inserting Fan1(sys-fan1) & Fan2(sys_fan2) node will not automatically boot.
4. To get the node up & running need to manually switch OFF & switch back ON the power supplies.

After double system-fan failure or 2 fantrays are removed , node performs graceful shutdown & stays down until power supplies are restarted manually.
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Bug Details Include

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