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Cisco Bug: CSCun10948 - 3850: Segfault with Process = ACL Logging Process

Last Modified

Nov 27, 2020

Products (1)

  • Cisco Catalyst 3850 Series Switches

Known Affected Releases

15.0(1)EZ

Description (partial)

Symptom:
An IOS-XE based CAT 3K switch will crash in IOSD with a segmentation fault in the ACL Logging Process:

IOSD-EXT-SIGNAL: Segmentation fault(11), Process = ACL Logging Process

Conditions:
1) This has been seen when traffic matches an ACL containing an entry with the 'log' or 'log-input' statement. Eg:

ip access-list extended trafficIN
 allow   ip host X.X.X.X any
 deny   ip any any log-input      <===

2) The device must be using a lanbase license

F340.06.11-3850-2#show license right-to-use
 Slot#  License name   Type     Count   Period left
----------------------------------------------------------
 1      lanbase      permanent     N/A   Lifetime

License Level on Reboot: lanbase
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