What settings on my wired router/modem combo should I use for IP-adressing?

[jaffa]

I have a modem with a built in router (a Thomson ADSL modem/router). Since the box is wired I can't use it as a wireless router.

I have now bought a Netgear wireless router that I want to use as the access point for a few clients with wireless nics.


I guess I will use dhcp on the wireless Netgear router but don't know about the wan adress but then I am insecure about how to connect it.

What settings should I use on the two routers as far as the public IP-adress is concerned?
Which ports on the two routers should I make the connection between and what cables should I use between the two routers (regular cat5 or peer-to-peer cable)?
Can I somehow just forward the public IP-adress in the Thomson modem/router and assign it to the Netgear router instead....

Hope for some assistance....

 

[Fardringle]

If you want to have all computers on your network be able to communicate with each other (wired to the Thompson and wireless on the Netgear), just disable DHCP on the Netgear and connect the two routers together via LAN ports (don't use the WAN/Internet port on the Netgear).

Alternate: Connect the Netgear's WAN/Internet port to a LAN port on the Thompson and then connect ALL computers to the Netgear. Leave the settings the way they are on the Thompson, let the Netgear get an IP address from the Thompson through DHCP, then set the DHCP server on the Netgear to use a different IP address range than the Thompson (i.e. 10.0.0.xxx on the Thompson and 192.168.0.xxx on the Netgear).

 

[jaffa]

Thank you for your answer.

I guess I will go with solution number 2.

Just a few other questions that I need to get confirmed before starting connecting the hardware....

Could there be any communication problems considering the fact that the clients all will get ip-adresses starting with 192.168.x.x from the Netgear, while the modem/router has a LAN ip-adress starting with 10.x.x.x?

The Thomson router will be the one with the public ip-adress?

The Netgear router will be assigned an ip-adress by the dhcp function of the Thomson router, probably in the 10.x.x.x range?

The 10.x.x.x. adress will be the Netgears WAN ip since I will connect a Lan-port on the Thomson router to the WAN port of the Netgear?

The default gateway/dns/ip-adress should be assigned to the clients by the Netgear routers dhcp function?

The clients in the Network will get IP-adresses from the Netgear router, all starting with 192.168.x.x?

If I later decide to use static IP-adressing. What should ip-adress should then be the default gateway (Thomson 10.x.x.x or Netgears 192.168.0.1?)?

 

[Fardringle]

Since you have multiple questions, it's easier for me to answer each one individually. My answers are in bold.

Could there be any communication problems considering the fact that the clients all will get ip-adresses starting with 192.168.x.x from the Netgear, while the modem/router has a LAN ip-adress starting with 10.x.x.x?
Shouldn't be a problem as long as the two IP address ranges for the routers are different. The Netgear will take all Internet communication from the client PCs and send it to the Thompson, and the the Thompson will then send it to your ISP.

The Thomson router will be the one with the public ip-adress?
Yes.

The Netgear router will be assigned an ip-adress by the dhcp function of the Thomson router, probably in the 10.x.x.x range?

The 10.x.x.x. adress will be the Netgears WAN ip since I will connect a Lan-port on the Thomson router to the WAN port of the Netgear?
Assuming the Thompson uses the standard IP range for that router, then yes. If the Thompson is set up with a different IP range then the WAN IP for the Netgear will be whatever the Thompson gives it within the configured address range.

The default gateway/dns/ip-adress should be assigned to the clients by the Netgear routers dhcp function?
Yes. The Netgear router might only give itself (192.168.0.1) as the DNS address to the clients, but Internet access on the clients will still work normally since the Netgear will have proper DNS information from the Thompson router.

The clients in the Network will get IP-adresses from the Netgear router, all starting with 192.168.x.x?
Correct.

If I later decide to use static IP-adressing. What should ip-adress should then be the default gateway (Thomson 10.x.x.x or Netgears 192.168.0.1?)?
The default gateway for the clients will be the LAN address (192.168.0.1) of the Netgear router. The default gateway for the Netgear router will be the LAN address of the Thompson.