We are having the same issue so the AP is showing a down amber state.   We have two APs configured identically, both with DHCP using reservations and not statics. VLANS, trunks and natives all fine and the same. One AP is fine the other is reporting this error DHCP from vlan 0.   This is even though the AP is getting its correct DHCP reserved IP from the correct VLAN.    Tried changing to static and changing vlans etc but no difference. Confirmed correct settings on both the dashboard and local AP config page. ... View more

Was this ever resolved.   I have a similar issue using Polycom VOIP phones connected to MS 225 access switches.   They have to communicate with a VOIP router on another floor and the traffic passes through a set of core MS 425 switches.   Phones on the same floor as the VOIP router all work fine. Phones on other floors that have to go through the core fail with a 'line unregistered' error.  ... View more