ipconfig /renew

[Hans L]

I have problems with Firefox 1.5.1 in that in about 25 % of all cases,
when I try to connnect to a web page, I get the following error message:

"Server not found ..."

When I click the button Try Again, Firefox connects to the website in
question in 90 % of the cases (in the other 10 %, the URL is really not
valid).

Desperately and half-blindedly, I am searching for a solution, and to
that effect, I ran the following:

ipconfig /renew

with the following result:

Windows IP configuration

An error occcured while renewing interface Local Area Connection :
unable to contact your DHCP server. Request has timed out.


I do not know how to interpret this error message in the face of the
fact that Firefox works most of the time, and IE works almost all the
time. Could someone explain it? Thanks!

Hans L

--

 

[Chuck]

I have problems with Firefox 1.5.1 in that in about 25 % of all cases,
when I try to connnect to a web page, I get the following error message:

"Server not found ..."

When I click the button Try Again, Firefox connects to the website in
question in 90 % of the cases (in the other 10 %, the URL is really not
valid).

Desperately and half-blindedly, I am searching for a solution, and to
that effect, I ran the following:

ipconfig /renew

with the following result:

Windows IP configuration

An error occcured while renewing interface Local Area Connection :
unable to contact your DHCP server. Request has timed out.


I do not know how to interpret this error message in the face of the
fact that Firefox works most of the time, and IE works almost all the
time. Could someone explain it? Thanks!

Hans L

Hans,

Your "server not found" sounds like either a DNS problem, or an MTU problem.
Both can have your result.

MTU Setting:
<http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html>
http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html

If MTU isn't the problem, let's look at "ipconfig /all".
<http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html>
http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html

 

[Hans L]

Hans,

Your "server not found" sounds like either a DNS problem, or an MTU
problem. Both can have your result.

MTU Setting:
<http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-
caused.html>
http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-c
aused.html

If MTU isn't the problem, let's look at "ipconfig /all".
<http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-
caused.html>
http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-c
aused.html

Chuck, thank you very much. I have printed out everything, and will
look through it tonight.

However, I do not understand what you mean by this:


If MTU isn't the problem, let's look at "ipconfig /all".

<http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-
caused.html>
http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-c
aused.html

Same URL as under MTU, and what should I look for in ipconfig /all?

Regards,

Hans L


--

 

[Chuck]

Chuck, thank you very much. I have printed out everything, and will
look through it tonight.

However, I do not understand what you mean by this:


If MTU isn't the problem, let's look at "ipconfig /all".

Same URL as under MTU, and what should I look for in ipconfig /all?

Regards,

Hans L

Hans,

Dang. Sometimes, copy and paste doesn't work (but it's way better than typing
the URL by hand). For the second, try:
<http://nitecruzr.blogspot.com/2005/05/reading-ipconfig-and-diagnosing.html>
http://nitecruzr.blogspot.com/2005/05/reading-ipconfig-and-diagnosing.html
And look at the DNS entries.

 

[Chuck]

Chuck, thank you very much. I have printed out everything, and will
look through it tonight.

However, I do not understand what you mean by this:


If MTU isn't the problem, let's look at "ipconfig /all".

Same URL as under MTU, and what should I look for in ipconfig /all?

Regards,

Hans L

Hans,

Dang. Sometimes, copy and paste doesn't work (but it's way better than typing
the URL by hand). For the second, try:
<http://nitecruzr.blogspot.com/2005/05/reading-ipconfig-and-diagnosing.html>
http://nitecruzr.blogspot.com/2005/05/reading-ipconfig-and-diagnosing.html
And look at the DNS entries. Or post the complete "ipconfig /all" output here.
<http://nitecruzr.blogspot.com/2005/05/troubleshooting-internet-service.html#AskingForHelp>
http://nitecruzr.blogspot.com/2005/05/troubleshooting-internet-service.html#AskingForHelp

 

[Hans L]

website >> > in question in 90 % of the cases (in the other 10 %, the
URL is >> > really not valid).
the >> > fact that Firefox works most of the time, and IE works
almost all >> > the time. Could someone explain it? Thanks!

Hans,

Dang. Sometimes, copy and paste doesn't work (but it's way better
than typing the URL by hand). For the second, try:
<http://nitecruzr.blogspot.com/2005/05/reading-ipconfig-and-diagnosing
.html>
http://nitecruzr.blogspot.com/2005/05/reading-ipconfig-and-diagnosing.
html And look at the DNS entries. Or post the complete "ipconfig
/all" output here.
<http://nitecruzr.blogspot.com/2005/05/troubleshooting-internet-servic
e.html#AskingForHelp>
http://nitecruzr.blogspot.com/2005/05/troubleshooting-internet-service
.html#AskingForHelp

 

[Hans L]

instead of ipconfig /renew try ipconfig /flushdns
and see if there is any difference

Harjeet

I'll check that one out too, Harry.

Hans L

--

 

[Harry]

instead of ipconfig /renew try ipconfig /flushdns
and see if there is any difference

Harjeet

 

[Hans L]

I have problems with Firefox 1.5.1 in that in about 25 % of all cases,
when I try to connnect to a web page, I get the following error
message:

"Server not found ..."

When I click the button Try Again, Firefox connects to the website in
question in 90 % of the cases (in the other 10 %, the URL is really
not valid).

Desperately and half-blindedly, I am searching for a solution, and to
that effect, I ran the following:

ipconfig /renew

with the following result:

Windows IP configuration

An error occcured while renewing interface Local Area Connection :
unable to contact your DHCP server. Request has timed out.


I do not know how to interpret this error message in the face of the
fact that Firefox works most of the time, and IE works almost all the
time. Could someone explain it? Thanks!

Hans L

For the time being, I have solved this problem. It turned out to be a
DNS problem in the VoIP router LinkSys RTP300).

By disabling "DNS Proxy" in the router, and setting DNS1 to 4.2.2.5 and
DNS 2 to 4.2.2.2 (the DNS servers of Adelphia, my ISP), all problems
described above have been resolved.

I have saved the information you have given me in this thread so that I
can go back to it, should I run into similar problems in the future.

Thanks you very much for your help!

Hans L

--

 

[Chuck]

For the time being, I have solved this problem. It turned out to be a
DNS problem in the VoIP router LinkSys RTP300).

By disabling "DNS Proxy" in the router, and setting DNS1 to 4.2.2.5 and
DNS 2 to 4.2.2.2 (the DNS servers of Adelphia, my ISP), all problems
described above have been resolved.

I have saved the information you have given me in this thread so that I
can go back to it, should I run into similar problems in the future.

Thanks you very much for your help!

Hans L

You're welcome, Hans. Thanks for updating the thread.