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Problem configuring linksys wireless router to hathway cable?

By jagdishrao
Jan 7, 2008
  1. hey guys pls help me out.

    i am jagdish from mumbai(india) and i have hathway ISP's cable modem
    based inter connection 512 blastextra(7 GB).

    i have PC witn win xp sp2 and hathway guys had set
    my lan card settings like this

    Internet IP :
    Default Gateway :
    Subnet Mask :
    (no usernames or passwords are required)

    it works absolutely fine when i have direct connection to PC.

    i bought a wireless router (linksys wrt54g) to share
    internet connection and data files across my Laptops
    so i set my lan card to obtail dynamic IP from DHCP server(Router)

    but when i try to set the lan settings as above in my
    router's as static ip settings.
    i get a error message which stops me from even saving
    the settings to router

    ""IP address and gateway are not at same subnet mask""

    which is true while ip has subnet as 29 the gate way has it as 15.

    when i make the subnets of both ip_add and gateway as 29 or 15 the
    settings get saved but the internet does not work which is obvious
    as i have changed the settings given by hathway.

    here i checked by ipconfig command my settings were
    IP Address :
    Default Gateway :
    Subnet Mask :

    Info of other settings in Router
    Local IP Address :
    Subnet Mask :

    DHCP server : Enabled
    Ip Range :

    Any techies around pls help me how shud
    i set the given settings in this linksys router.

    i also tried Automatic Configuration-DHCP but the router did not pick the settings from ISP automatically so internet does not work this way also

  2. jobeard

    jobeard TS Ambassador Posts: 12,441   +1,414

    First, your understanding is quite good.

    that subnet mask is strange. in the router setup try instead.

    you may also need the MAC id from your NIC card to be set as the masquerade id in the router
  3. lstockert

    lstockert TS Rookie

    DHCP on the router should work. Reset the power on the modem after you set the router to DHCP. The modem is probably still auto detecting the MAC of your nic on your pc. You could have your ISP clear the arp on the modem, but it is just as easy to unplug for a minute.
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