We are having trouble with guests completing the captive portal registration on the NAC. This is apparently a MAC-to-IP resolution issue between the EWC and the NAC. The subnet for the captive portal is 10.200.x.x and the DHCP is handled by the EWC's onboard DHCP for the topology.
I doing something wrong because the NAC is not resolving these addresses therfor they connot complete registration. The information from the switches resolves perfectly but not from this "guest" subnet. I am sure there is a check box somewhere I am missing, any help?
My Mac-to-IP seems to be much better. I have changed a few check boxes and added the helper-ip addresses. NAC registration is still spotty. GTAC said this was due to MAC-to-IP but having improved MAC-to-IP I am not seeing any better performance. Before a client would log in "Extended State" "Resolving IP Address". Now it logs "IdentiFi State Change" but the client end-user sees the same thing - A registration screen that just spins and then times out. If you let it sit long enough you get the AUP screen and can finalize registration (which is just a check box to submit the AUP).