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Cisco Bug: CSCuq02713 - Phones Should Enable the MAB on uplink Switch

Last Modified

Mar 26, 2015

Products (4)

  • Cisco IP Phone 7800 Series
  • Cisco IP Phone 7841
  • Cisco IP Phone 7821
  • Cisco IP Phone 7861

Known Affected Releases


Description (partial)

Phones transmit EAPoL Start Packets at all times & hence DOT1X context is never deleted on the switch which prevents the switch from failing over to MAB.

The switch sends three EAP messages, 30 seconds apart, before MAB is attempted, but since the phone doesnt stop sending EAPoL Start Packets  the DOT1X context will never be deleted on the switch,which prevents the switch to failing over to MAB
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