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Cisco Bug: CSCum74599 - 802.1x Expired inactivity timer improperly drops auth session

Last Modified

Jun 24, 2014

Products (175)

  • Cisco IOS
  • Cisco Catalyst 3750V2-24PS Switch
  • Cisco Catalyst 3560G-48PS Switch
  • Cisco Catalyst 2960G-24TC-L Switch
  • Cisco Catalyst 2960-24-S Switch
  • Cisco Catalyst 3560X-48P-S Switch
  • Cisco Catalyst 3750V2-24FS Switch
  • Cisco Catalyst 3560E-48PD-E Switch
  • Cisco Catalyst 3560-12PC-S Compact Switch
  • Cisco Catalyst 2960C-12PC-L Switch
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Known Affected Releases


Description (partial)

Authentication session is dropped on 802.1x interface when authentication inactivity timer expires.
This is expected behavior when there is no traffic detected on the interface in the specified interval configured.
However, when there is network traffic on the interface, the active  authentication session is removed improperly.

Observed on 3750V2 switch (stacked and unstacked) running 15.0(2)SE5
"authentication timer inactivity x" configured on dot1x interface where x is the number of seconds that inactivity is monitored.
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