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Cisco Bug: CSCte29257 - 802.1Q tagged EAPOL Start message triggers authentication

Last Modified

Sep 20, 2015

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases


Description (partial)

 We have a customer here that has a Siemens IP phone thats meant to do 802.1X.

However, the IP phone is sending a tagged EAPoL Start frame into the switch port. When the tag number corresponds to the access VLAN, authentication is triggered, when it should NOT, according to the 802.1X spec. See below:

Seen only when a tagged EAPoL Start is sent into the switch port.
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