Preview Tool

Cisco Bug: CSCvi04426 - Kernel panic triggered reload due to fast software PSU back-to-back access

Last Modified

Sep 14, 2019

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

7.0(3)F3(2) 7.0(3)F3(4.49) 7.0(3)FR(4.46)

Description (partial)

N3K-C3600 series of switches with power supply modules NXA-PAC-1100W-PI2 or NXA-PAC-1100W-PE2 may experience system resets due to NMI caused by watchdog timeouts.  Additional symptoms include PLATFORM-2-PS_ABSENT messages indicating a power supply is absent/shutdown.

Multiple PLATFORM-2-PS_ABSENT and associated system log entries are seen, indicating changes to the power supply status absent of any actual change to the power supplies.  These may be followed by a KERN-0-SYSTEM_MSG when a kernel panic is caused by the watchdog detecting a hard lockup condition.

Normal operating conditions
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.