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Unable to use 802.1x on Wired Intel cards

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Hello,

 

We are currently testing the implementation of 802.1x authentication using a computer certificate on our network.

The laptops used are Dell Latitude 6220 and Dell Latitude 7240 (I218-LM and 82579LM cards) and a Targus Universal USB Docking Station. (OS: Windows 7 Enterprise SP1)

 

When testing the configuration, the laptops are not able to authenticate when I use the Intel NIC giving this error:

 

Wired 802.1X Authentication failed.

Network Adapter: Intel(R) Ethernet Connection I218-LM
Interface GUID: {fce65701-1056-495e-8d36-f2c7b29dd4a2}
Peer Address: CCEF48D73A6B
Local Address: ECF4BB1443D7
Connection ID: 0x9
Identity: -
User: -
Domain: -
Reason: 0x50006
Reason Text: The authenticator is no longer present
Error Code: 0x0

 

Sometimes, I receive a strange "succeeded" message telling that the network does not support authentication then restart the authentication process :

 

Wired 802.1X Authentication succeeded.

Network Adapter: Intel(R) Ethernet Connection I218-LM
Interface GUID: {fce65701-1056-495e-8d36-f2c7b29dd4a2}
Peer Address: CCEF48D73A6B
Local Address: ECF4BB1443D7
Connection ID: 0xa
Identity: -
User: -
Domain: -
Reason: 0x70003
Reason Text: The network does not support authentication
Error Code: 0x0

 

When switching to the Embedded adapter in the Targus Docking station, I'm authenticated in less than 10 seconds:

 

Wired 802.1X Authentication succeeded.

Network Adapter: Targus Giga Ethernet
Interface GUID: {2cdbb8b0-0eec-42c3-a57b-7b8bc22ab354}
Peer Address: CCEF48D73A6B
Local Address: 0050B668D39D
Connection ID: 0x1
Identity: host/PC0022110.NBB.LOCAL
User: -
Domain: -
Reason: 0x0
Reason Text: The operation was successful
Error Code: 0x0

 

I've updated the laptops to the latest BIOS available, updated the Intel drivers to the latest available without success.

Any idea of what is causing this problem?

 

Gerald


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