Hello there - I'm new to this forum so am hoping you guys can help me out of a hole!!
I've inherited a Windows 2003 Active Directory domain that has got a single DHCP server on the network, about 20 HP Switches and about three hundred client pcs. The previous IT Manager set it up with a subnet mask of 255.255.252.0 and a single scope of 10.12.12.2 - 10.12.15.44 with a lease period of 14 days.
What happens is every 7 days or so, a number of PCs (that are all connected to the same switch) do their job and go and seek out the DHCP server to verify their address and to renew but they all lose their network connections - my helpdesk phone rings off its hook with users complaining! The other IT staff have been told that when this happens the "quick way" of fixing it is to reset the switch that all the PCs are connected to and this does fix the problem. When I check out the event logs on the affected PCs they all report issues with renewing IP addresses.
I have not seen this problem before and I have not seen a single scope setup in this way before. What do you guys think? I think I should have at least one other DHCP server on the network for redundancy anyway. Should I have multiple scopes setup for four network segments (e.g. 10.12.12.x 10.12.13.x 10.12.14.x and 10.12.15.x) on the one server?
Sorry for the long post but I'm stuck!!!!