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Cisco Bug: CSCup48742 - ISR & ASR crashed in scp process when "ip dhcp database scp" configured

Last Modified

Oct 14, 2019

Products (25)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.4(2.20)M0.2 15.4(3)S

Description (partial)

Router get Crashed

Condition 1. configure below CLI and make sure that SCP server IP is unreachable
ip dhcp database scp://tom:cisco@ write-delay 60 timeout 5

Condition 2. Wait for 60 seconds or  following message
%DHCPD-3-WRITE_ERROR: DHCP could not write bindings to scp://tom:cisco@

Condition 3: Make SSH connect from this box to other box and exit from that connection so we would be back to original device (this is optional)

Condition 4: Hit "enter" on that prompt

Condition 5: You should able to see this message
[Resuming connection 1 to UNKNOWN ... ]

[Connection to UNKNOWN aborted: error status 0]

Condition 6: Mostly router would hang or crashed but if not then run any show command "show ip int br" etc

Condition 7: If above all condition is met and then wait for router to crash. 
ISR sometime takes 5-10 mins to crash 
ASR crashes immediately most of times.
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Bug Details Include

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