IP assignment and authenticated port

Jan Ceuleers jan.ceuleers at computer.org
Tue Feb 3 13:52:00 EST 2015

On 03/02/15 19:40, Sarah Thomas wrote:
>   Final understanding - DHCP broadcast messages are not accepted by the
> switch till the port is authenticated. Only after the port is
> authenticated, broadcast message will be accepted , for which DHCP reply
> message holding the IP address for the client will come.  Please correct
> the understanding if its wrong.

Correct, but it can be generalised even further. The switch port should
reject /all/ traffic from/to a port other than 802.1x until that port is

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