I am having difficulty getting something that should be simple going. I have a Netgear DM111P modem connection to a broadband connection using PPPoA. Connected to this I have a Netgear FCG318 wireless router/8 port switch. This serves about a dozen users in a small office mostly wireless clients and some wired ones.
The modem is defaulted to act as a DHCP server when using PPPoA and if I have the DHCP disabled on the router nobody can connect to the internet as there not being assigned an IP. So the only way to connect is to specify an IP and everything works smoothly.
So the crux of the problem, I need to have DHCP enabled on the router so that users can connect but this seems to be causing the internet to fail within an hour of both modem and router being rebooted. What I suspect is that both are fighting for the right to assign IP's and eventually locking each other up as when the internet goes down I cant connect to either modem or router admin interfaces. Adding to this there seems to be an unusually large number of packet collisions on the network something like 3% of total traffic.
another curio seems to be the fact that they will not work when given the same class of IP ie currently the modem is 192.168.0.1 and the router 192.168.1.1 if i make them both 192.168.1.* respectively they refuse to cooperate.
So finally two questions, is the DHCP causing the router and modem to fight to the death and kill each other along with the internet connection and how to i resolve this.
What would be the correct IP address setting for the router and the modem given that I need the router to act as DHCP butcant disable the modem as the connection has to be PPPoA(its on the BT network in the UK).