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Cisco Bug: CSCvs91195 - Crash Due to AutoSmart Port Macros

Last Modified

Sep 03, 2020

Products (243)

  • Cisco Catalyst 9300 Series Switches
  • Cisco Catalyst C9500-32QC Switch
  • Cisco Catalyst 9300L-48P-4X-A Switch
  • Cisco NCS 4202
  • Cisco Catalyst 9200L-48PXG-2Y Switch
  • Cisco Catalyst 9300L-48P-4G-E Switch
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 3650-24PD-E Switch
  • Cisco Catalyst 9400 Supervisor Engine-1XL-Y
  • Cisco Catalyst 3850-24P-L Switch
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Known Affected Releases

16.12.3 Amsterdam-17.2.1 Fuji-16.9.2

Description (partial)

Symptom:
Cat9300 managed by DNAC might reboot unexpectedly due to a corrupted managed timer in the IOSd code when processing macros pushed by DNAC.
The below example messages can be found in the crashinfo logs (or in the device console) just before the crash.

%AUTOSMARTPORT-5-INSERT: Device Un-Classified Device detected on interface AccessTunnel1, executed CISCO_LAST_RESORT_EVENT
%LINEPROTO-5-UPDOWN: Line protocol on Interface AccessTunnel5, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface AccessTunnel6, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface AccessTunnel8, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface AccessTunnel1, changed state to down
...

%Software-forced reload


Exception to IOS Thread:
Frame pointer 0x7FF7CA11D4F0, PC = 0x7FF849D1396C

UNIX-EXT-SIGNAL: Aborted(6), Process = ASP Process Creation     <<<<<<<<<<<

Conditions:
AutoSmart Port (ASP) config pushed by DNAC.
'no macro auto processing' present on some interfaces
ASP enabled globally - 'macro auto global processing' is present in running configuration
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