RADIUS CoA

[config t]

When I impose a RADIUS CoA on a Windows box to maneuver it to an isolation VLAN should it detect the network change and DORA automatically? It seems as if it is failing to initiate DHCP unless the port is bounced.

[config t]

To answer my own question:

It depends on the equipment string. In this case a voip handset in-line with the PC was causing a failure to detect the network change so it wouldn't initiate DHCP. The answer for this scenario was installing the NAC agent.

[deanwebb]

Yes, and most Windows won't notice the change without an agent. This is why agentless solutions have to hard-bounce the port to get the device to request a new IP address. Any dot1x solution works so much better with agents that replace the Windows supplicant.

I have evil things to say about Windows supplicants, if you would like to hear them...