I have an Airtel broadband connection(provided through a Beetel ADSL modem) and two laptops which need to access the connection simultaneously. Instead of asking Airtel to provide me with a solution and overcharge for it, I decided that buying a wireless router(Linksys) and connecting the ADSL modem with it would be more cost-effective.
After spending a frustrating hour trying to get it work and searching the Internet for clues, I finally managed to get it to work. Vikram Sridharan’s post Airtel Beetel Modem + Netgear WGR614 Wifi Router provided the best solution. In his post he used a Netgear router as an example, here are the same steps for a Linksys wireless router:
1. Connect the ADSL modem to your computer and log on to the modem using its IP address(generally it is http://192.168.1.1)
2. From the ‘Device Info’ page, note down the Primary and Secondary DNS addresses.
3. Connect the wireless router to your computer and log on using its IP address, http://192.168.1.1
4. In the ‘Network Setup’ section of the ‘Setup’ page, change the Local IP address of the wireless router to 192.168.0.1 and save the settings.
5. Connect to the wireless router again this time using the new IP address(http://192.168.0.1)
6. In the ‘Internet Setup’ section of the ‘Setup’ page, the entries are to be made as shown below.
Internet IP address: Enter an IP of the same series as the ADSL modem, ie, 192.168.1.x. Ensure that x is greater than the number of computers which need to access the connection.
Subnet Mask: Default 255.255.255.0
Default Gateway: The IP address of the ADSL modem, ie, 192.168.1.1
DNS1 and DNS2: The values that you noted down in setp#2 from the ADSL modem’s configuration page.
7. Disable the ‘DHCP Server’ option.