Trouble shooting TP-Link wireless router with PTCL broadband

My setup of having TP Link wireless router with PTCL Broadband modem was working fine. But I was getting bad internet on my mobile phones and PCs. If I bypass the wireless router and connect DSL modem directly, it start working fine.

So it seems issue is with wireless router. And I used to get error in my browser that DNS named not resolved.

Error 105 (net::ERR_NAME_NOT_RESOLVED): Unable to resolve the server’s DNS address.

The admin panel of my PTCL Broadband is on and for TP-Link I set to I replaced the primary and secondary PTCL DNS with Google Public DNS. And it works (Primary: and Secondary

Google Public DNS is a free, global Domain Name System resolution service, that we can use as an alternative to PTCL DNS. I am observing quality of Internet speed now.

You can also use OpenDNS addresses other than Google. Primary: Secondary: I will give try to OpenDNS too.

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