I have just installed a new windows 2008 server and migrated a small peer to peer network of 5 workstations running windows 7 enterprise. The server is attached to a router and the rest of the network using a gigabit switch. I have run dcpromo on the server and set up the dhcp server. The server has a set ip of 192.168.1.20 The ip scope has been set as 192.168.1.20 - 254. The router Dhcp is set to start from 192.168.1.100 so this range has been reserved on the Dhcp server to avoid conflicts. The gateway is set as the router address 192.168.1.1 and the dns on the server and the workstations is set to the server IP.
Since implementing this, the internet has slowed considerably - any ideas on how to fix this please?