Guest

Preview Tool

Cisco Bug: CSCsy76265 - Sup6E: ARP snoop with AutoQOS causes EAPOL time outs

Last Modified

Mar 06, 2018

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

12.2(50)SG1

Description (partial)

Symptom:

At low authentication rates the ARP Snoop process hogs the CPU, and significantly impacts the performance of the switch. CPU jumps to 100% and remains there until all ports participating in Dot1x authentications are shut down. Console and vty access are severly impacted, and are very slow.

Conditions:
 IP device tracking is enabled
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.