Good day
The WLC had a DHCP server for the WLANs that was inside the company network, for other reasons it had to migrate to a DHC server that is in a provider (this connection now has a Firewall in the middle).
After the change of DHCP server, it is observed that some users, randomly, in different WLANs, present from one moment to another limited connectivity, "the yellow triangle", they can not ping towards the gateway, in the WLC it is observed that the MAC associated is in the UP state, apparently fine; also in the DHCP server, the active MAC / IP association is still observed; however, it does not have network connectivity
Proactively the timeout was increased
Configuration> WLAN> "SSID"> Advanced> Session Timeout (secs)
However none of these changes has worked and the failure persists
Attach debug of a MAC 94e9.7977.288d that presents problems and the show running of the WLC
