Intenet connection intermittently 'dropping out'.
 

I am losing my broadband internet connection intermittently. It was first
noticed with the laptop losing the connection (wireless) but then I realized
that the desktop PC was also loosing the connection.
When the connection is lost initially, the 'Local Area Connection' still
shows the speed as 100Mbps and the status as 'Connected', however if the
connection is down for a while, then the message changes to: "This computer
is not currently connected to a network". At this time my Netgear wireless
modem/router (DG834G v2) lights are showing power on, i lamp flashing
normally with normal colour, and the cable connection (#4 desktop
connection) also flashing normally. The NetworkMagic software Log, also
shows that the PC has lost connection but unfortunately it does not identify
the cause. Looking in the 'Computer Management -System Tools- Event
Viewer - System information (log), I found the following errors listed (I
don't want to mislead the diagnosis on the basis that a little knowledge can
be a dangerous thing), but the following are the error messages that seem to
relate to network connection problems.

This error occurred 25 times from 12th July until today 2nd Aug.

The IP address lease 192.168.0.2 for the Network Card with network address
001109F317B1 has been denied by the DHCP server 192.168.0.1 (The DHCP Server
sent a DHCPNACK message).

For more information, see Help and Support Centre at
http://go.microsoft.com/fwlink/events.asp.

This warning occurred two times on 29th July

Your computer was not able to renew its address from the network (from the
DHCP Server) for the Network Card with network address 001109F317B1. The
following error occurred:

The semaphore timeout period has expired. . Your computer will continue to
try and obtain an address on its own from the network address (DHCP) server.

For more information, see Help and Support Centre at
http://go.microsoft.com/fwlink/events.asp.


Not sure if they are in any way significant to my "line/internet dropouts"
or not, but perhaps they are a clue to where I should look for the problem.
The dropouts vary in time and sometimes are so brief that they are not
noticeable unless you attempt to update a web site or check for new mail at
that particular time. I have been thinking that perhaps I should check the
network card's contacts in the PC in case there is a bad contact or similar.
But at this point not sure if my problem is modem/router, network card or PC
related.

The system is a 3.2GHz Intel, with 1GB of RAM and XP Home.

Thanks for your assistance.

Re: Intenet connection intermittently 'dropping out'.
 

there are several reasons why the netgear router might be denying
leases. i'd look in the router logs to see what was happening on
that side when these events took place. I'd also reboot/power cycle
the router and consider resetting it to factory defaults again. also
check to make sure you have the latest firmware for the router and
drivers for the network cards.

check to see if this is happening while these computers are
attempting to go into or come out of a power management state (if
this is happening after computers are idle, change the settings to
not allow the computer to power down the network cards to save
power).

If someone is spoofing your MAC address and trying to attach to the
wireless SSID, this could happen as well. or if you did not change
the SSID name from the default, you might be trying to connect to
someone elses network on the wireless side.

not knowing what network magic adds to the equation (why did you
install it?) you might want to uninstall it while trouble shooting
this issue.

On Sat, 4 Aug 2007 09:49:19 +1000, "LPS-AU"
<lps_softw@westnet.com.au> wrote:

>I am losing my broadband internet connection intermittently. It was first
>noticed with the laptop losing the connection (wireless) but then I realized
>that the desktop PC was also loosing the connection.
>When the connection is lost initially, the 'Local Area Connection' still
>shows the speed as 100Mbps and the status as 'Connected', however if the
>connection is down for a while, then the message changes to: "This computer
>is not currently connected to a network". At this time my Netgear wireless
>modem/router (DG834G v2) lights are showing power on, i lamp flashing
>normally with normal colour, and the cable connection (#4 desktop
>connection) also flashing normally. The NetworkMagic software Log, also
>shows that the PC has lost connection but unfortunately it does not identify
>the cause. Looking in the 'Computer Management -System Tools- Event
>Viewer - System information (log), I found the following errors listed (I
>don't want to mislead the diagnosis on the basis that a little knowledge can
>be a dangerous thing), but the following are the error messages that seem to
>relate to network connection problems.
>
> This error occurred 25 times from 12th July until today 2nd Aug.
>
>The IP address lease 192.168.0.2 for the Network Card with network address
>001109F317B1 has been denied by the DHCP server 192.168.0.1 (The DHCP Server
>sent a DHCPNACK message).
>
>For more information, see Help and Support Centre at
>http://go.microsoft.com/fwlink/events.asp.
>
> This warning occurred two times on 29th July
>
>Your computer was not able to renew its address from the network (from the
>DHCP Server) for the Network Card with network address 001109F317B1. The
>following error occurred:
>
>The semaphore timeout period has expired. . Your computer will continue to
>try and obtain an address on its own from the network address (DHCP) server.
>
>For more information, see Help and Support Centre at
>http://go.microsoft.com/fwlink/events.asp.
>
>
>Not sure if they are in any way significant to my "line/internet dropouts"
>or not, but perhaps they are a clue to where I should look for the problem.
>The dropouts vary in time and sometimes are so brief that they are not
>noticeable unless you attempt to update a web site or check for new mail at
>that particular time. I have been thinking that perhaps I should check the
>network card's contacts in the PC in case there is a bad contact or similar.
>But at this point not sure if my problem is modem/router, network card or PC
>related.
>
>The system is a 3.2GHz Intel, with 1GB of RAM and XP Home.
>
>Thanks for your assistance.
>
--

Barb Bowman
MS Windows-MVP
http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
http://blogs.digitalmediaphile.com/barb/

Re: Intenet connection intermittently 'dropping out'.
 

Thanks for your assistance Barb. I have replied under your questions.
Cheers, Peter.
*****************

"Barb Bowman" <barb@nospam.com> wrote in message
news:rcm8b31f8g9m64b40b4ci8tv8r4h5f0i7d@4ax.com...
> there are several reasons why the netgear router might be denying
> leases. i'd look in the router logs to see what was happening on
> that side when these events took place. I'd also reboot/power cycle
> the router and consider resetting it to factory defaults again. also
> check to make sure you have the latest firmware for the router and
> drivers for the network cards.

I have rebooted and repowered the modem/router several times.
Following is yesterdays router log:
Sun, 2002-09-08 12:00:40 - Initialize LCP.

Sun, 2002-09-08 12:00:40 - LCP is allowed to come up.

Sun, 2002-09-08 12:00:44 - CHAP authentication success

Sun, 2002-09-08 12:00:46 - Send out NTP request to time-g.netgear.com

Sun, 2007-08-05 06:12:31 - Receive NTP Reply from time-g.netgear.com

Sun, 2007-08-05 06:12:45 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 06:11:45 - Router start up

Sun, 2007-08-05 06:34:22 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 06:44:09 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 07:05:20 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 07:25:05 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 07:45:21 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 08:17:33 - Administrator login successful - IP:192.168.0.2

Sun, 2007-08-05 08:47:33 - Administrator login successful - IP:192.168.0.2

Have not reset to factory defaults but did upgrade the Firmware after the
problem started.
>
> check to see if this is happening while these computers are
> attempting to go into or come out of a power management state (if
> this is happening after computers are idle, change the settings to
> not allow the computer to power down the network cards to save
> power).
>
The problem shows up while it is being used and sometimes the outage is so
brief that I only notice it if I am updating a web page or checking the
mail.

> If someone is spoofing your MAC address and trying to attach to the
> wireless SSID, this could happen as well. or if you did not change
> the SSID name from the default, you might be trying to connect to
> someone elses network on the wireless side.

The SSID name is changed and have security on.
>
> not knowing what network magic adds to the equation (why did you
> install it?) you might want to uninstall it while trouble shooting
> this issue.

Installed NetworkMagic when I wanted to connect my old PC (cable) and also a
wireless laptop. I was having some problems and this solved the connection
at the time. My disconnections started some weeks/months later.

>
> On Sat, 4 Aug 2007 09:49:19 +1000, "LPS-AU"
> <lps_softw@westnet.com.au> wrote:
>
>>I am losing my broadband internet connection intermittently. It was first
>>noticed with the laptop losing the connection (wireless) but then I
>>realized
>>that the desktop PC was also loosing the connection.
>>When the connection is lost initially, the 'Local Area Connection' still
>>shows the speed as 100Mbps and the status as 'Connected', however if the
>>connection is down for a while, then the message changes to: "This
>>computer
>>is not currently connected to a network". At this time my Netgear wireless
>>modem/router (DG834G v2) lights are showing power on, i lamp flashing
>>normally with normal colour, and the cable connection (#4 desktop
>>connection) also flashing normally. The NetworkMagic software Log, also
>>shows that the PC has lost connection but unfortunately it does not
>>identify
>>the cause. Looking in the 'Computer Management -System Tools- Event
>>Viewer - System information (log), I found the following errors listed (I
>>don't want to mislead the diagnosis on the basis that a little knowledge
>>can
>>be a dangerous thing), but the following are the error messages that seem
>>to
>>relate to network connection problems.
>>
<SNIP>

>>Thanks for your assistance.
>>
> --
>
> Barb Bowman
> MS Windows-MVP
> http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
> http://blogs.digitalmediaphile.com/barb/

Re: Intenet connection intermittently 'dropping out'.
 

I see a line Router Start Up
Is this when you power cycled the router?
I don't see any requests for DHCP leases in the log (although what
you posted is a very short period of time).

do all computers go into the bad state at the same time? if yes,
this would suggest an issue with the router itself.

how long is the lease period set for?

On Mon, 6 Aug 2007 19:13:12 +1000, "LPS-AU"
<lps_softw@westnet.com.au> wrote:

>Thanks for your assistance Barb. I have replied under your questions.
>Cheers, Peter.
>*****************
>
>"Barb Bowman" <barb@nospam.com> wrote in message
>news:rcm8b31f8g9m64b40b4ci8tv8r4h5f0i7d@4ax.com.. .
>> there are several reasons why the netgear router might be denying
>> leases. i'd look in the router logs to see what was happening on
>> that side when these events took place. I'd also reboot/power cycle
>> the router and consider resetting it to factory defaults again. also
>> check to make sure you have the latest firmware for the router and
>> drivers for the network cards.
>
>I have rebooted and repowered the modem/router several times.
>Following is yesterdays router log:
>Sun, 2002-09-08 12:00:40 - Initialize LCP.
>
>Sun, 2002-09-08 12:00:40 - LCP is allowed to come up.
>
>Sun, 2002-09-08 12:00:44 - CHAP authentication success
>
>Sun, 2002-09-08 12:00:46 - Send out NTP request to time-g.netgear.com
>
>Sun, 2007-08-05 06:12:31 - Receive NTP Reply from time-g.netgear.com
>
>Sun, 2007-08-05 06:12:45 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 06:11:45 - Router start up
>
>Sun, 2007-08-05 06:34:22 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 06:44:09 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 07:05:20 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 07:25:05 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 07:45:21 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 08:17:33 - Administrator login successful - IP:192.168.0.2
>
>Sun, 2007-08-05 08:47:33 - Administrator login successful - IP:192.168.0.2
>
>Have not reset to factory defaults but did upgrade the Firmware after the
>problem started.
>>
>> check to see if this is happening while these computers are
>> attempting to go into or come out of a power management state (if
>> this is happening after computers are idle, change the settings to
>> not allow the computer to power down the network cards to save
>> power).
>>
>The problem shows up while it is being used and sometimes the outage is so
>brief that I only notice it if I am updating a web page or checking the
>mail.
>
>> If someone is spoofing your MAC address and trying to attach to the
>> wireless SSID, this could happen as well. or if you did not change
>> the SSID name from the default, you might be trying to connect to
>> someone elses network on the wireless side.
>
>The SSID name is changed and have security on.
>>
>> not knowing what network magic adds to the equation (why did you
>> install it?) you might want to uninstall it while trouble shooting
>> this issue.
>
>Installed NetworkMagic when I wanted to connect my old PC (cable) and also a
>wireless laptop. I was having some problems and this solved the connection
>at the time. My disconnections started some weeks/months later.
>
>>
>> On Sat, 4 Aug 2007 09:49:19 +1000, "LPS-AU"
>> <lps_softw@westnet.com.au> wrote:
>>
>>>I am losing my broadband internet connection intermittently. It was first
>>>noticed with the laptop losing the connection (wireless) but then I
>>>realized
>>>that the desktop PC was also loosing the connection.
>>>When the connection is lost initially, the 'Local Area Connection' still
>>>shows the speed as 100Mbps and the status as 'Connected', however if the
>>>connection is down for a while, then the message changes to: "This
>>>computer
>>>is not currently connected to a network". At this time my Netgear wireless
>>>modem/router (DG834G v2) lights are showing power on, i lamp flashing
>>>normally with normal colour, and the cable connection (#4 desktop
>>>connection) also flashing normally. The NetworkMagic software Log, also
>>>shows that the PC has lost connection but unfortunately it does not
>>>identify
>>>the cause. Looking in the 'Computer Management -System Tools- Event
>>>Viewer - System information (log), I found the following errors listed (I
>>>don't want to mislead the diagnosis on the basis that a little knowledge
>>>can
>>>be a dangerous thing), but the following are the error messages that seem
>>>to
>>>relate to network connection problems.
>>>
><SNIP>
>
>>>Thanks for your assistance.
>>>
>> --
>>
>> Barb Bowman
>> MS Windows-MVP
>> http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
>> http://blogs.digitalmediaphile.com/barb/
>
--

Barb Bowman
MS Windows-MVP
http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
http://blogs.digitalmediaphile.com/barb/