Internet connection drops after 10 min, help

[michaelscai]

very strange internet connection problem at home.. my computer starts
to drop internet connection after about 10 minutes from booting. Using
motoroal 5100 surfboard cable modem, COX as ISP, Windows XP
professional. When this happens no sign of change on the modem as all
lights are green and solid on the cable modem with activity light
blinking, Also:

I can still access a few sites with https protocol but doing a http
request on a browser always fails even though I can ping the site! I
can ping ISP's DNS server and do dnslookup.

Only way to fix this seem to be restart the box, then it fails after 10
minutes or so. if I logout or do iprelease iprenew it doesn't help,
even though ipconfig -all shows same configs as when it was connected,
but browsing to any web gets timeout, except a few site I can do https
requets.

Any expert ideas? Help!!

thanks.

 

[Chuck]

very strange internet connection problem at home.. my computer starts
to drop internet connection after about 10 minutes from booting. Using
motoroal 5100 surfboard cable modem, COX as ISP, Windows XP
professional. When this happens no sign of change on the modem as all
lights are green and solid on the cable modem with activity light
blinking, Also:

I can still access a few sites with https protocol but doing a http
request on a browser always fails even though I can ping the site! I
can ping ISP's DNS server and do dnslookup.

Only way to fix this seem to be restart the box, then it fails after 10
minutes or so. if I logout or do iprelease iprenew it doesn't help,
even though ipconfig -all shows same configs as when it was connected,
but browsing to any web gets timeout, except a few site I can do https
requets.

Any expert ideas? Help!!

thanks.

Michael,

The next time this happens, please identify the scope of the problem:
From a command window:
1) Ping www.yahoo.com.
2) Ping 66.94.230.33.
Report success / exact text of error messages.
From your browser:
3) Browse www.yahoo.com.
4) Browse 66.94.230.33.
Report success / exact text of error messages.

Is this a single computer connected to the cable modem? Any router or firewall
protecting it?

Please provide ipconfig information for the computer.
Start - Run - "cmd". Type "ipconfig /all >c:\ipconfig.txt" into the command
window - Open c:\ipconfig.txt in Notepad, make sure that Format - Word Wrap is
NOT checked!, copy and paste entire contents into your next post. Identify
operating system (by name, version, and SP level) with each ipconfig listing.

--
Cheers,
Chuck
Paranoia comes from experience - and is not necessarily a bad thing.
My email is AT DOT
actual address pchuck sonic net

 

[Jack]

Hi

Might be an Authentication problem If Cox is using MAC address as form of
authentication and the MAC is not any more as it use to be it might behave
this way: http://www.ezlan.net/broadband.html

Jack (MVP-Networking).

 

[michaelscai]

I will give that a try. Strange thing is I am still able to connect to
certain sites using https when the brower reporting timeout on all
sites using http.

 

[Guest]

Hi Chuck,

My case is similar except that I got only around 2 to 3 min connection and
after that I can't connect to any sites. The problem just came after I
updated to SP2.
My computer is running WinXP Home Edition, Version 2002, Service Pack 2.
Below is the results when I tried the checking steps.

1) Ping www.yahoo.com.

Reply from 66.94.230.35 .... Packets: Sent : 4 Received : 4
Loss : 0
Round trip time - average = 179ms

2) Ping 66.94.230.33.

Reply from 66.94.230.33 .... Packets: Sent : 4 Received : 4
Loss : 0
Round trip time - average = 181ms

From your browser:
3) Browse www.yahoo.com.

Cannot connect and displayed the can't connect message

4) Browse 66.94.230.33.

Cannot connect and displayed the can't connect message

Is this a single computer connected to the cable modem? Any router or firewall
protecting it?

Right, it's a standalone computer. Default setting of firewall comes
with the SP2 update activated.

Please provide ipconfig information for the computer.

Windows IP Configuration



Host Name . . . . . . . . . . . . : your-f94gptsr7s

Primary Dns Suffix . . . . . . . :

Node Type . . . . . . . . . . . . : Unknown

IP Routing Enabled. . . . . . . . : No

WINS Proxy Enabled. . . . . . . . : No

DNS Suffix Search List. . . . . . : pppoe.dialer



Ethernet adapter °Ã°ì³s½u 2:



Connection-specific DNS Suffix . : pppoe.dialer

Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network
Connection

Physical Address. . . . . . . . . : 00-02-A5-99-E0-D1

Dhcp Enabled. . . . . . . . . . . : Yes

Autoconfiguration Enabled . . . . : Yes

IP Address. . . . . . . . . . . . : 10.120.72.192

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 10.120.72.253

DHCP Server . . . . . . . . . . . : 10.120.72.253

DNS Servers . . . . . . . . . . . : 210.0.128.241

Lease Obtained. . . . . . . . . . : Saturday, 5 February, 2005 0:15:54

Lease Expires . . . . . . . . . . : Saturday, 5 February, 2005 3:15:54



PPP adapter hgc:



Connection-specific DNS Suffix . :

Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface

Physical Address. . . . . . . . . : 00-53-45-00-00-00

Dhcp Enabled. . . . . . . . . . . : No

IP Address. . . . . . . . . . . . : 221.127.178.154

Subnet Mask . . . . . . . . . . . : 255.255.255.255

Default Gateway . . . . . . . . . : 221.127.178.154

DNS Servers . . . . . . . . . . . : 210.0.128.241

210.0.255.216

NetBIOS over Tcpip. . . . . . . . : Disabled

 

[michaelscai]

it turns out my original problem was software related - possibly virus,
it got so bad the computer first shortly refuse to boot complaining
missing a system dll. After booting in into safe mode, windows starts
up but with unrecognizable binary characters on the startup screen! I
ended up had to reinstall the OS, afterwards all is well, no connection
drop.

I'm not sure about your case, I'd try disable the software firewall as
that maye interefering with your internet access. For example zonealarm
may block IE accessing the internet unless it's permitted to access the
internet. If you can ping web sites, the dns server, your modem almost
certainly works fine. Do a virus check as well to make sure nothing
funky is going on.

You can also do a "dnslookup www.yahoo.com" to verify it's resolving to
the right ip address (e.g. 66.94.230.33) dns (domain name server)
translates between the domain name and the ip addresses

other standard thing to try would be do a "ipconfig -release" and
"ipconfig -renew" at command prompt to reset the connection.

good luck.

 

[Bobo]

You can also do a "dnslookup www.yahoo.com" to verify it's resolving to
the right ip address (e.g. 66.94.230.33) dns (domain name server)
translates between the domain name and the ip addresses

that's "nslookup", no "d".