Networks Double network issue.

Discussion in 'Tech Support' started by frentraken, 17 Apr 2010.

  1. frentraken

    frentraken What's a Dremel?

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    So I've just started renting a room, and my internet is now supplied by my landlord over Wifi which I connect to no problem with my laptop. My problem is though I used to run my Desktop as a file server, so my thought was to set up a wired network with a router I had from before, and then internet shared through my laptops wifi cared. Problem is when I connect my router to the laptop through the wire the wifi's internet drops off (Still connected, but no net access.), and I can't get it to find my desktop for file sharing.

    So info on what I'm using is laptop on win 7, desktop on XP, and my router is a Dlink dir-601
     
  2. Krog_Mod

    Krog_Mod What's a Dremel?

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    Your router might have the same IP as your landlords router. If that's the case, just change your router's IP to something else (probably just from 192.168.1.1 to 192.168.1.5 or something like that).
     
  3. saspro

    saspro IT monkey

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    Do an IPCONFIG /ALL from your laptop when it's connected to the wifi & post the results
     
  4. Zoon

    Zoon Hunting Wabbits since the 80s

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    What Krog_Mod suggests as the problem is likely the case, however, you will probably also need to do the following in addition to what he suggests:

    1. Disable DHCP on your router.
    You can't have two DHCP servers running on the LAN. They clash.

    2. Don't put a default gateway on your wired interface.
    Why? You can't have two default routes on your PC. You receive a default route from your Wifi and from your wired, and it has to pick one as the preferred route. Read below for further.

    3. Change the interface metric on your Wireless and Wired interfaces under Adapter Settings in Network Places, to make Wireless higher.
    Windows automatically prioritises connections with higher speed / reliability by setting the metric automatically. Wifi may be given a metric of 1 or 10 if its the only link. If there's a Wired link active as well, with a default gateway present, it would be given a metric of 1, and wifi 10 or 20. You can open a command prompt and check the output of "route print" to see if this is required.

    Here's mine for reference - I'm on wired (192.168.1.x) and wifi (192.168.2.x), so I can take my laptop off my desk and walk around.
    Code:
    IPv4 Route Table
    ===========================================================================
    Active Routes:
    Network Destination        Netmask          Gateway       Interface  Metric
              0.0.0.0          0.0.0.0       192.168.1.1    192.168.1.53     20
              0.0.0.0          0.0.0.0       192.168.2.1    192.168.2.58     25
            127.0.0.0        255.0.0.0         On-link         127.0.0.1    306
            127.0.0.1  255.255.255.255         On-link         127.0.0.1    306
      127.255.255.255  255.255.255.255         On-link         127.0.0.1    306
          192.168.1.0    255.255.255.0         On-link      192.168.1.53    276
         192.168.1.53  255.255.255.255         On-link      192.168.1.53    276
        192.168.1.255  255.255.255.255         On-link      192.168.1.53    276
          192.168.2.0    255.255.255.0         On-link      192.168.2.58    281
         192.168.2.58  255.255.255.255         On-link      192.168.2.58    281
        192.168.2.255  255.255.255.255         On-link      192.168.2.58    281
    
     
  5. Krog_Mod

    Krog_Mod What's a Dremel?

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    Seconded. Unless you're running a seperate network with a different IP range you'll need to disable dhcp. I don't know about the default gateway thing though, I've only worked with a few consumer model routers, but when I do something like this I just set the default gateway for the main router.

    This has me wondering if you'd be able to turn your router (if it's a wireless router) into a repeater-bridge and just connect your stuff through that rather than from the laptop to the router. I'm able to do that on my router but I'm also using DD-WRT on it, so I don't know if you'll be able to do it. But if you can't, you could always flash your router to use DD-WRT. I recommend it to a lot of people, because it usually gives a lot of added functionality.

    Here's a link on the DD-WRT website explaining a reapeater bridge
     
  6. Zoon

    Zoon Hunting Wabbits since the 80s

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    Turning your router into a repeater and disabling DHCP on it would be a good plan, and would eliminate the requirement for connection sharing on your network. You'd like need to change the router's LAN IP as it'll probably overlap with the other one still.

    Well worth looking at if its possible with your router :thumb:
     
  7. frentraken

    frentraken What's a Dremel?

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    Sorry about the no response. I got it going, by basically following your steps Zoon, so I've got file sharing running smooth like. Now though need my internet to share and I can't seem to get ICS to connect through the router to my Xbox or desktop pc. Any advice on this, can't wrap my head around this ICS stuff.
     
  8. Zoon

    Zoon Hunting Wabbits since the 80s

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    Gotta be honest with you - ICS will more than likely not work as you're double NAT'ing which usually doesn't work.

    As my last post said, you'd be much better disabling DHCP, changing the router's default IP so it doesn't clash but you can still get on it, and using the wireless part of it as a repeater bridge to your landlords' router.
     
  9. frentraken

    frentraken What's a Dremel?

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    Ya, sadly the DIR-601 isn't supported on the DD-WRT and no built in option for it on the base firmware either, at least not that I've been able to find.
     

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