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Cisco Bug: CSCuq99943 - Watchdog Exception for hulc/sisf component

Last Modified

Sep 01, 2020

Products (1)

  • Cisco Catalyst 2960 Series Switches

Known Affected Releases


Description (partial)

Switch crashes with following symptoms:

in the crashinfo:
External Interrupt Routine Interrupted by Watchdog Exception (0x2000)!

in the show version:
System returned to ROM by watchdog timer expired
System image file is "flash:c2960s-universalk9-mz.152-1.E3.bin"
Last reload reason: Unknown reason

Crashinfo data need to be validated by TAC in order to confirm involved processes.

IOS: 15.2(1)E3, 
TRAFFIC: IPv6: DHCP or NDP traffic, 
FEATURES: DHCP guard configured
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  • Status
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