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Cisco Bug: CSCuq41073 - Sending high rate of DHCP discover packets causes core

Last Modified

Sep 17, 2019

Products (7)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 9504 Switch
  • Cisco Nexus 3164Q Switch
  • Cisco Nexus 9508 Switch
  • Cisco Nexus 93128TX Switch

Known Affected Releases

6.1(2)I2(2b)

Description (partial) 

Symptom:
This core is seen when copp policing is increased for DHCP as to not police the pps sent.  50,000 DHCP discover messages are sent to N3164 where it is configured as a dhcp relay.  After around 5 minutes the CPU is low (around 30-40%) and a core is seen which reloads the device.

Conditions:
This core is seen when copp policing is increased for DHCP as to not police the pps sent.  50,000 DHCP discover messages are sent to N3164 where it is configured as a dhcp relay.  After around 5 minutes the CPU is low (around 30-40%) and a core is seen which reloads the device.
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Bug Details Include

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