For some inexplicable reason, many of the computers on our network stopped being able to access the internet. They did have connectivity to the internal network. We have two Win 2008 servers serving DHCP, One is serving 2-126, the other serving 127-254. We also have one of those servers also acting as the ADC. It seems that (with one exception) those people who have reserved IP's are able to connect to the internet just fine. However, many who have to lease a random IP are not. However, some can. We also have a guest Wi-Fi that should not be affected by this at all, because it is isolated from the internal network, and receiving DHCP directly from our Fortigate 80C firewall. However, at the same time as all of the problems with our network occured, the gues Wi-Fi lost access to the internet. At the moment, I am at a loss as to whether it is the DHCP servers, ADC server, or the Fortigate that is causing the problem. Or, some combination of the afore mentioned?