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Cisco Bug: CSCvu90882 - Switch might enter a bootloop with SWITCH_DISABLE_PASSWORD_RECOVERY & IGNORE_STARTUP_CFG set to 1

Last Modified

Sep 19, 2020

Products (32)

  • Cisco Catalyst 9300 Series Switches
  • Cisco Catalyst 9400 Supervisor Engine-1XL-Y
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Catalyst C9500-16X-E Switch
  • Cisco Catalyst 9300-48U-A Switch
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst C9500-16X-A Switch
  • Cisco Catalyst C9500-12Q-A Switch
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Known Affected Releases

16.12.3 17.2.1

Description (partial)

Cat9k might face a bootloop with the following log during the boot prodecure:

UNIX-EXT-SIGNAL: Segmentation fault(11), Process = Net Background

-Following rommon variables set to 1:


Those variable can also be set with the commands:
system ignore startupconfig switch all
system disable password recovery switch all
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Bug Details Include

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