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NetDSL 800 and WRT54G

Discussion in 'Cisco/Linksys Wireless Routers' started by ndboyd, Mar 14, 2007.

  1. ndboyd

    ndboyd LI Guru Member

    I have been asked to help a friend hook up wireless in their house. They have Qwest and use a netdsl 800 dsl modem. They went out and bought a WRT54G linksys box for the wireless option.

    I tried last night to get them to work together with no luck. It seems the netdsl 800 is more then just a modem. it actually keeps the external IP address on the modem and uses dhcp to assign 192.168.1.x addresses to the PC.

    This seems like the same thing that the WRT54G does.

    When the PC is hooked directly to the netdsl modem, we can access the internet and the ip address on the PC is 192.168.1.2. the address of the netdsl interface is 192.168.1.1

    When i hook the netdsl modem to the WRT54G and then the PC to the WRT54G, we can not access the internet. I can access the WRT54G admin interface on 192.168.1.1 and the PC now has an address of 192.168.1.100. this is as expected. the problem as i see it, is that the WRT54G is not talking to the netdsl or it is not routing the packets through to the netdsl. neither of which i am sure of.

    Has anyone configured these to devices to work with each other and if so, what is the secret?

    Thanks in advance for any help.

    I have also thought about just having them purchase an access point for the wireless and returning the WRT54G. i think that would be easier. any comments?

    :confused:
     
  2. ifican

    ifican Network Guru Member

    You need to do one of two things:

    1) set the dsl modem to bridge mode or

    2) change the lan ip of the wrt to something other then 192.168.1.x

    the problem is you cannot have the same ip subnet on both sides of the router or it will have issues as you see.
     
  3. ndboyd

    ndboyd LI Guru Member

    i have the users guide for the netdsl 800 and i do not see anywhere that i can change it to just a bridge. It looks like i have to make changes to the WRT54G.

    So, just changing the lan network to something like 192.168.2.x instead of 192.168.1.100 may solve my problem?

    the WRT54G should get its address from the netdsl 800 using dhcp correct. i then just set the dhcp setting for devices attached to the WRT54G to 192.168.2.x IPs?
     
  4. ifican

    ifican Network Guru Member

    Yes yes and yes. Changing the lan ip (dhcp scope) will fix the problem and correct the wrt should be getting its ip from the dsl modem.
     

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