> I am trying to resolve an issue with a computer which currently has
> Windows XP Professional installed, and has both a broadband
> connection and a dial up connection set up for internet access.
> Normally, the broadband connection is used, but when the broadband
> service is down, the intention is to use the dial up internet service
> provider for temporary internet connection use. This computer is
> connected through a regular Linksys router to the broadband
> connection's network outlet.
> The problem is that when the dial up connection successfully
> connects, for some reason it is not possible to access the internet
> with it. Previously, in my experience with a similar set up on
> Windows 98SE, I found that after the dial up connection is
> established, I could use all web browsers installed on the system to
> start browsing via dial up. After the dial up connection is
> terminated, the web browsers would automatically revert to using the
> broadband connection.
> In the case of this Win XP Pro computer, it seems that the system
> cannot find the dial up connection for internet access after the DUN
> connects successfully. Even more strangely, there is no problem using
> the DUN to send outgoing mail via the dial up internet service
> provider's SMTP outgoing mail server, and this proves that the
> connection is working. However, all internet browsing using all the
> web browsers installed on this system under Win XP Pro fails, as if
> the system was unable to get DNS for browsing.
> Are there any specific settings or parameters in my networking
> settings that I need to adjust so that it would be easy to flip back
> and forth between broadband and dial up? I have even disabled the
> broadband connection and then connected with dial up, but was still
> unable to web browse. Thanks for any help.

> In news:eCXW3AXXHHA.2636@TK2MSFTNGP06.phx.gbl,
> User <u***@user.com> typed:
>> I am trying to resolve an issue with a computer which currently has
>> Windows XP Professional installed, and has both a broadband
>> connection and a dial up connection set up for internet access.
>> Normally, the broadband connection is used, but when the broadband
>> service is down, the intention is to use the dial up internet service
>> provider for temporary internet connection use. This computer is
>> connected through a regular Linksys router to the broadband
>> connection's network outlet.
>> The problem is that when the dial up connection successfully
>> connects, for some reason it is not possible to access the internet
>> with it. Previously, in my experience with a similar set up on
>> Windows 98SE, I found that after the dial up connection is
>> established, I could use all web browsers installed on the system to
>> start browsing via dial up. After the dial up connection is
>> terminated, the web browsers would automatically revert to using the
>> broadband connection.
>> In the case of this Win XP Pro computer, it seems that the system
>> cannot find the dial up connection for internet access after the DUN
>> connects successfully. Even more strangely, there is no problem using
>> the DUN to send outgoing mail via the dial up internet service
>> provider's SMTP outgoing mail server, and this proves that the
>> connection is working. However, all internet browsing using all the
>> web browsers installed on this system under Win XP Pro fails, as if
>> the system was unable to get DNS for browsing.
>> Are there any specific settings or parameters in my networking
>> settings that I need to adjust so that it would be easy to flip back
>> and forth between broadband and dial up? I have even disabled the
>> broadband connection and then connected with dial up, but was still
>> unable to web browse. Thanks for any help.
>
> When on dialup, do an ipconfig /all -
>     See whether you can ping the default gateway
>     See whether you can ping the DNS server(s) by IP
>     See whether you can ping www.google.com
>
> Also - check your browser's connection settings, and make sure it isn't set
> up to do *anything* other than use the network connection it already finds -
> no proxy, no dialup.
>
>

> In news:e5uowYdXHHA.2448@TK2MSFTNGP02.phx.gbl,
> User <u***@user.com> typed:
>
> <snip>
>> Hello, thank you for your reply. None of the two browsers set up on
>> this Win XP Pro system, uses any proxy at all. Both use a direct
>> internet connection for IE and Mozilla browsers. I performed the 3
>> tests you suggested, and after DUN is connected, I had no problems
>> pinging the DEFAULT GATEWAY IP address and the DNS SERVER IP address.
>> However, pinging google.com failed, and I think whatever the reason
>> for that failure, is the reason why I cannot browse the WWW using any
>> of my browsers while DUN is connected. Any other suggestions for next
>> step diagnosis? Thanks for any help.
>
>
> DNS is the problem, yes. Try manually specifying a DNS server IP in your DUN
> properties....try 4.2.2.2 as a test. If that works, call the ISP who hosts
> the PPP server.
>
> If changing the DNS server IP doesn't work, find & download WinSockFix (I
> usually get it from majorgeeks.com) and run it.

> Lanwench [MVP - Exchange] wrote:
>> In news:e5uowYdXHHA.2448@TK2MSFTNGP02.phx.gbl,
>> User <u***@user.com> typed:
>>
>> <snip>
>>> Hello, thank you for your reply. None of the two browsers set up on
>>> this Win XP Pro system, uses any proxy at all. Both use a direct
>>> internet connection for IE and Mozilla browsers. I performed the 3
>>> tests you suggested, and after DUN is connected, I had no problems
>>> pinging the DEFAULT GATEWAY IP address and the DNS SERVER IP
>>> address. However, pinging google.com failed, and I think whatever
>>> the reason for that failure, is the reason why I cannot browse the
>>> WWW using any of my browsers while DUN is connected. Any other
>>> suggestions for next step diagnosis? Thanks for any help.
>>
>>
>> DNS is the problem, yes. Try manually specifying a DNS server IP in
>> your DUN properties....try 4.2.2.2 as a test. If that works, call
>> the ISP who hosts the PPP server.
>>
>> If changing the DNS server IP doesn't work, find & download
>> WinSockFix (I usually get it from majorgeeks.com) and run it.
>
> Hello, thanks for your reply. Actually, with this particular dial up
> provider, the DNS servers ARE already manually specified, and the
> values are correct for this ISP. I have already re-checked with their
> technical support. I have used these DNS IP addresses for years and
> it was working fine until I moved from Win 98SE to Win XP Pro.

> In news:eaB4BPqXHHA.4520@TK2MSFTNGP06.phx.gbl,
> User <u***@user.com> typed:
>> Lanwench [MVP - Exchange] wrote:
>>> In news:e5uowYdXHHA.2448@TK2MSFTNGP02.phx.gbl,
>>> User <u***@user.com> typed:
>>>
>>> <snip>
>>>> Hello, thank you for your reply. None of the two browsers set up on
>>>> this Win XP Pro system, uses any proxy at all. Both use a direct
>>>> internet connection for IE and Mozilla browsers. I performed the 3
>>>> tests you suggested, and after DUN is connected, I had no problems
>>>> pinging the DEFAULT GATEWAY IP address and the DNS SERVER IP
>>>> address. However, pinging google.com failed, and I think whatever
>>>> the reason for that failure, is the reason why I cannot browse the
>>>> WWW using any of my browsers while DUN is connected. Any other
>>>> suggestions for next step diagnosis? Thanks for any help.
>>>
>>> DNS is the problem, yes. Try manually specifying a DNS server IP in
>>> your DUN properties....try 4.2.2.2 as a test. If that works, call
>>> the ISP who hosts the PPP server.
>>>
>>> If changing the DNS server IP doesn't work, find & download
>>> WinSockFix (I usually get it from majorgeeks.com) and run it.
>> Hello, thanks for your reply. Actually, with this particular dial up
>> provider, the DNS servers ARE already manually specified, and the
>> values are correct for this ISP. I have already re-checked with their
>> technical support. I have used these DNS IP addresses for years and
>> it was working fine until I moved from Win 98SE to Win XP Pro.
>
> Well, clearly something isn't working fine now. Try changing it to the one I
> suggested, to see if it helps....and either run ipconfig /flushdns or
> reboot. If it doesn't work, try the winsockfix.