I have had trouble this month connecting to the BSNL broadband service. On a particular weekend, i just couldnt connect to the internet. I called up the customer care at 1500 and they told me they were experiencing server problems. Again last weekend, i faced similar issues. i finally decided to check if there was something i could learn by logging on to my wireless router (Huawei).
I logged in and it showed me as connected. I then checked the system logs but dint see them too well. A little later i figured out the logs showed the complete bootup of the router and it did show 2 DNS address which i wasnt using in my network configuration. I used a static ip actually and have not enabled DHCP. The new addresses were 220.127.116.11 and 18.104.22.168. These were different from the 22.214.171.124/71 addresses i was using earlier. I used these new addresses and well i was able to browse without issues.
Another peculiar problem im facing is my laptop doesnt work with the huawei wireless router at home. Im wireless all the while at office and so it definitely is a problem with the router at home. I chan check my ralink wireless utility and it shows the wireless signal going off and on every 5-10 seconds or so. i now need to investigate this in greater detail, maybe first with google and them later again with the utilities available on the router.