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Cisco Bug: CSCvh64475 - router crashed after entered "no ipv6 access-class sl_def_ipv6_acl in" during quiet mode

Last Modified

Aug 14, 2019

Products (99)

  • Cisco IOS
  • Cisco 888W Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 819 Hardened Integrated Services Router
  • Cisco 892W Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco 2951 Integrated Services Router
  • Cisco 898 Secure G.SHDSL EFM/ATM with Multi-Mode 4G LTE ISR Router
  • Cisco 1905 Serial Integrated Services Router
  • Cisco VG204XM Analog Voice Gateway
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Known Affected Releases

15.5(3)M 15.5(3.1a)M6 15.7(3)M

Description (partial)

Symptom:
Router might crash during quiet mode if deleting default ACL ipv6 sl_def_acl


*Jan 20 01:37:02.431: %SEC_LOGIN-1-QUIET_MODE_ON: Still timeleft for watching failures is 0 secs, [user: afdaf] [Source: 10.10.10.20] [localport: 23] [Reason: Login Authentication Failed] [ACL: sl_def_acl] at 01:37:02 UTC Sat Jan 20 2018

*Jan 20 01:37:08.087: %SEC-6-IPACCESSLOGP: list sl_def_acl denied tcp 10.10.10.20(47026) -> 10.10.10.10(23), 1 packet  


example:

config t
line vty 0 4
no ipv6 access-class sl_def_ipv6_acl in

Conditions:
deleting ipv6 sl_def_acl during Quiet Mode ON
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Bug Details Include

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  • Status
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