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Cisco Bug: CSCvs08681 - Crash triggered with IPv6, IPv4, PPPoE, PortChannel and NAT

Last Modified

Aug 25, 2020

Products (19)

  • Cisco IOS
  • Cisco ASR 1000 Series IOS XE SD-WAN
  • Cisco 4221 Integrated Services Router
  • Cisco 4431 Integrated Services Router
  • Cisco 4331 Integrated Services Router
  • Cisco 4321 Integrated Services Router
  • Cisco ASR 1002-X Router
  • Cisco ASR 1001-X Router
  • Cisco 4461 Integrated Services Router
  • Cisco 4351 Integrated Services Router
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Known Affected Releases

16.11.1a 16.12.1a

Description (partial)

The affected device crashes constantly after the configuration is loaded.

A crash file is created which is listed as a system report, that file can be uncompressed, inside you find a folder named 'tmp/' which contains the bootuplog and there is the evidence for a Control Packet Processor Driver lockdown after the configuration is synced:

xinetd[7078]: execve /usr/bin/rsync
cpp_ha[5507]: %CPPDRV-3-LOCKDOWN_INITIATED: QFP0.0 CPP Driver LOCKDOWN being triggered due to fatal error.
kernel: QFP0.0: Fatal Fault: SW reported: Userspace fault
cpp_ha[5507]: %CPPHA-3-FAULTCRASH: CPP 0.0 unresolved fault detected, initiating crash dump.

Have traffic that uses all these features:

 * IPv6
 * IPv4
 * NAT
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