No matter what wlan I attempted to have the Vista laptop connect to, it simply wouldn't get a dhcp lease. ACS showed a passed authentication but the controller showed the client as not authenticated. A debug on the controller showed the dhcp request being forwarded but no response. The dhcp server (windows 2003) did not show a lease for the pc in question on the appropriate scope. As soon as I made the change from this article I was good to go. One important note on this article though, there are two registry changes mentioned. The first one is to add an entry. That one didn't do anything for me. The second is to change an existing entry - that's the one that worked.
We have several WLANs which are working without issue, however, we have a Guest vlan enabled for guest access and occasionally I get a call that no one can get a DHCP address from that LWAPP ap, if they walk down the hall it works fine, come back the next day and that ap is working again. Any one else seen this happen? This guest vlan has no security enabled and thought perhaps that the controller's IDS was kicking in and disabling the wlan on that ap but I can't find anything concrete in the logs.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
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