Hello,
We have quite a few DHCP servers and scopes out within our environment and, in trying to get Nagios working properly with everything, we're seeing some oddness with how we're testing it. We're using the standard check_dhcp within Nagios and have IP helpers set on our VLANs so that we can emulate client broadcasts. It seems that if Nagios has to wait for more than a few seconds (say a down server, etc.), that check will block others and we'll get multiple false negatives. Any thoughts on how best to manage large number of scopes?