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Routing problem?

Discussion in 'Networking Issues' started by vladimir, Oct 26, 2005.

  1. vladimir

    vladimir Network Guru Member

    First let me explain how my network setup is
    [hr:01a4d78f37]
    Internet ADSL connection > Cisco677 (ASDL modem - PPPoA) > LinksysWRT54G (sveasoft) > PC client (windowsXP)

    IP-config:
    Cisco WAN: N/A
    Cisco: LAN: 10.0.0.1
    Linksys: WAN: 10.0.0.100
    Linksys LAN: 192.168.1.1
    PC: 192.168.1.70
    [hr:01a4d78f37]
    I have forwardet all ports and traffic to "10.0.0.100" in my Cisco677 and i use "Static IP" on my linksys.

    I can access the internet when i connect my PC directly to the internet through the Cisco677 but nok through the Linksys router. Suddenly it just stopped working

    When i am connected through the linksys i get ping reply from 192.168.1.1 (linksys LAN) but I cant ping any other hostnames IP's on the internet.

    So how can i check that the routing between 192.168.1.0 <> 10.0.0.0 works?
     
  2. Doman

    Doman Network Guru Member

    You don't have to set routing and/or static IP with modem. Even more, modem do not have to see your LAN behind router - it's safer.

    I think that you have to check your WAN connection on Linksys router.
     
  3. 4Access

    4Access Network Guru Member

    Can you ping 10.0.0.1? If you can then try pinging 216.239.57.99 or 216.239.37.99 or 67.15.103.72 (Google.com & LinksysInfo.org) If you can ping any of those IP addresses then you've got connectivity to the internet and your problem is most likely DNS related... You may want to double check your DNS settings on your client PCs.

    While there's nothing really wrong with the IP addresses you've configured for your modem & router it's not an ideal configuration because your internet traffic is being NAT'd twice. This should work OK but sometimes you can have trouble getting ports forwarded etc. If you modem supports a "bridge" or "half-bridge" mode you'll probably want to enable that. (It will give your Linksys Router a Public IP address for its internet port instead of one in the 10.0.0.X range.)

    Good luck.
     

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