windows 7 and dynamic vlans

Does anyone know if windows 7 will reset the nic, by design, when someone logs in and out of the system? Wondering about this as we are looking to do dynamic vlans, and I need the system to pull a new IP when a user logs in.
pprintzQCCAsked:
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David Johnson, CD, MVPConnect With a Mentor OwnerCommented:
no it is done by the machine logon.

For now we've only found one way to make it work. Using machine and user authentication and authorizing the machine account but giving a limited network access for it. It seems that the client machine needs a successful machine authentication before it can authenticate users correctly. Im wondering why this is not possible using only user authentication:

User provides credentials -> 802.1X Authorization -> VLAN Assignment depending on radius Policies -> Domain Login -> User Session -> User starts Logoff -> Domain Logoff -> 802.1X UnAuthorization -> ... New user provides credentials -> 802.1X Authorization -> (...)


If you show internet connections keep saying that there are multiple networks
disable and then re-enable the network adapter.


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AnuroopsunddCommented:
No Windows 7 do not reset NIN by user login or logout
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pprintzQCCAuthor Commented:
So if a system pulls a new ip, that is just random luck?
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pprintzQCCAuthor Commented:
Even further, does windows re-initiate DHCP between machine auth and user auth?
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David Johnson, CD, MVPOwnerCommented:
no it is done by the machine logon.

What you could do is have a startup script after the user logs in to do a
ipconfig /release
ipconfig /renew
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pprintzQCCAuthor Commented:
Sorry for not getting to this sooner.

I did some testing and found that if different users log off and on to a system, it was pulling IP's from the proper subnet based on the VLAN being assigned by network policy.

The machines do authenticate on their own, so that may be why this works? Not going to question it too much, it is getting the job done and that is enough for me. Thanks for the input!
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