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DHCP request failed

Discussion in 'Networking' started by Biren, Jan 27, 2008.

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  1. Biren

    Biren Thread Starter

    Joined:
    Jun 12, 2007
    Messages:
    3
    Hi,
    I have an adsl connection. i have a GLB-502T D-Link modem/router . It works fine with the desktop only plugged to the ethernet. Now I want to have a wireless LAN setup at home. which is why i connected the DI-514 wireless router to the ethernet port of the modem/router and the desktop to one of the five ethernet ports. The desktop worked fine on the first go but i cannot connect the laptop. The connection is made and drops in about 30 secs or so saying The host did not respond to the DHCP request made. If i repair this which menas the lappy will again do a request the lappy connects again but gives the same err in about the same time .
    Please Help
    Thanks for any small i/p
     
  2. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,418
    I'm surprised that it worked at all. Both of those routers have the same subnet as their base address, which usually makes it impossible for the second router to connect to the WAN port. I'd configure the secondary router as follows, which will give you the wireless capability, but eliminate the second NAT layer and it's difficulties.

    Connecting two (or more) SOHO broadband routers together.

    Configure the IP address of the secondary router(s) to be in the same subnet as the primary router, but out of the range of the DHCP server in the primary router. For instance DHCP server addresses 192.168.0.2 through 192.168.0.100, I'd assign the secondary router 192.168.0.254 as it's IP address, 192.168.0.253 for another router, etc.

    Note: Do this first, as you will have to reboot the computer to connect to the router again for the remaining changes.

    Disable the DHCP server in the secondary router.

    Setup the wireless section just the way you would if it was the primary router, channels, encryption, etc.

    Connect from the primary router's LAN port to one of the LAN ports on the secondary router. If there is no uplink port and neither of the routers have auto-sensing ports, use a cross-over cable. Leave the WAN port unconnected!

    This procedure bypasses the routing function (NAT layer) and configures the router as a switch (or wireless access point for wireless routers).
     
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