Internet connection drops

[rff123]

My internet connection drops constantly. I cannot determine whether it is a hardware, driver, program, or settings issue. Connectivity is worse when wireless laptop is online (streaming a movie or playing interactive games), with dropped connections every few minutes.

I stream a radio station 24/7 through RealPlayer on the wired desktop computer, my girlfriend watches movies and plays interactive games on the wireless laptop where the content/games comes from Chinese websites)

*Comcast Cable Internet Connection, Linksys BEFCMU10 Cable Modem, Linksys WRT54GX2 WIreless-G router.

*Desktop: HP Pavilion a1610n (hardwired) using NVIDIA nForce Networking Controller, Windows XP ME, SP2

*Laptop: Dell E1405 Inspiron using wireless card (Dell Wireless 1390 WLAN Minicard), Windows XP SP2


The following events (1002, 1003) seem to occur most often and always back-to-back when I look at the System Event Viewer. For example:

Warning Source: Dhcp Event 1003

Your computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address ************. The following error occurred:
The operation was canceled by the user. . Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.


Error Source: Dhcp Event 1002

The IP address lease 192.168.1.100 for the Network Card with network address ************ has been denied by the DHCP server 192.168.1.1 (The DHCP Server sent a DHCPNACK message).

Other Errors:

Source: NetBT Event 4321
The name "MSHOME :1d" could not be registered on the Interface with IP address 192.168.1.101. The machine with the IP address 192.168.1.100 did not allow the name to be claimed by this machine.

Source:IPNATHLP Event 32003
The Network Address Translator (NAT) was unable to request an operation of the kernel-mode translation module. This may indicate misconfiguration, insufficient resources, or an internal error. The data is the error code.



Below is the hardwired HP DESKTOP info. The only differences on LAPTOP
IP Config. (besides an ethernet adaptor) is that the NODE type is set to Broadcast, and last 3 digits of IP address is .104

Windows IP Configuration

Host Name . . . . . . . . . . . . : **
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
Physical Address. . . . . . . . . : **-**-**-**-**-**
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 68.87.76.178
68.87.78.130
Lease Obtained. . . . . . . . . . : Monday, February 25, 2008 3:19:51 PM

Lease Expires . . . . . . . . . . : Tuesday, February 26, 2008 3:19:51 P
M

C:\Documents and Settings\HP_Administrator>Your computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address 0018F3572729. The following error occurred:
'Your' is not recognized as an internal or external command,
operable program or batch file.

C:\Documents and Settings\HP_Administrator>The operation was canceled by the user. . Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.
'The' is not recognized as an internal or external command,
operable program or batch file.

[Sava700]

comcast huh... have you called them about any issues? Sounds like packetloss to me.

[YeOldeStonecat]

This is clearly an issue between your PC..and your router. All of these errors are related to your INTERNAL network..your 192.168.1.xxx network...not your WAN interface on the router (your ISP connection).

Check the router to see if you can update the firmware
Update NIC drivers on your computers
Make sure your PCs are clean from malware, rebuild the TCP stack/winsock

Your PCs are failing to obtain an IP address from your DHCP service...which is your routers internal interface. The issue is either your router, and/or your computers.

[helter]

Nvidia onboard, search google for Nvidia checksum offloading, might find something there, never figured out the issue myself, just know it was one for a while.


You messages, are form the HP desktop comp, does the laptop also loose the connection? Could your router be rebooting? Maybe a bad power strip or somthing? or its failing when it gets too hot?


By pas the router and hook straight to the modem, see if the problem occurs this way, if it does then its not the router, if it does not, well you know where to start looking.

[helter]

Your PCs are failing to obtain an IP address from your DHCP service...which is your routers internal interface. The issue is either your router, and/or your computers.

I suspect this is correct, but try bypassing the router to test it anyway. Also check your cables they should SNAP into all sockets on the computer and the router, if they do not, they do not have a good connection.

[rff123]

Thanks for all the replies. I'll start working on each suggestion. Meanwhile FYI, the dropped connections can increase to every few minutes when the laptop is online to watch movies or to play video games.

Yes, the laptop loses connection as well.

[bashir]

Here is the story in short: (if you need more detail, let me know)

My internet connection has been dropping for about a month. I have Time Warner which has Road Runner internet. I connect with hard wire (RJ45) and there are two computers, so the problem, I know, is not because of the computer, since it drops on a regular basis on both computers and here is what ive been doing...

I called (many times) the ISP provider, had technician over a few times, inspected all the wires and changed splitter (just in case), looked at the signal (posted in this post), changed the cable modem/router.
I still have the same problem: unexpected dropping of my internet connection. When the internet is up, it works just fine. When the internet is down, I can still watch TV (cable TV from same company.)

Here is the log of my cable modem:

First Time---------------------Last Time--------------------Counts -------Level -----------ID--------------Text

SUN FEB 24 12:20:09 2008-------SUN FEB 24 12:20:09 2008-------3------- Critical (3)-------68000100-------DHCP FAILED - Discover sent, no offer received

SAT FEB 23 13:39:43 2008-------SAT FEB 23 13:39:43 2008-------3 ------- Critical (3)-------68000200-------DHCP FAILED - Request sent, No response

MON FEB 25 12:22:13 2008-------MON FEB 25 12:22:13 2008------5------- Critical (3)-------82000100-------No Maintenance Broadcasts for Ranging opportunities received ...

MON FEB 25 12:22:25 2008-------MON FEB 25 12:22:25 2008-------54-------Critical (3)-------82000200-------No Ranging Response received - T3 time-out

MON FEB 25 19:06:33 2008-------MON FEB 25 19:06:33 2008-------18 -------Critical (3)-------68000300 -------DHCP WARNING - Non-critical field invalid in response.

MON FEB 25 19:06:21 2008-------MON FEB 25 19:06:21 2008-------16-------Critical (3)-------82000400-------Received Response to Broadcast Maintenance Request, But no Un...

TUE FEB 26 15:33:51 2008-------TUE FEB 26 15:33:51 2008-------761------Critical (3)-------82000500 -------Started Unicast Maintenance Ranging - No Response received - ...


The technicians can't figure out what's wrong. When they come, internet works fine, they say they don't see any problem.

Here is my cable modem information:

Information:
Cable Modem : AMBIT DOCSIS 2.0 Cable Modem
Boot Code Version : 2.1.5
Software Version : 5.11.1135
Hardware Version : 4.7

Cable Modem Status
Item -----------------------------------Status-------Comments
Acquire a Downstream Channel-------555000000 Hz-------Locked
Connectivity State---------------------OK--------------Operational
Boot State----------------------------OK--------------Operational
Security----------------------------Enabled--------------BPI+

Cable Modem Downstream
Downstream Lock : -------Locked
Downstream Channel Id : -------3
Downstream Frequency : -------(idk it was blank)
Downstream Modulation : -------QAM256
Downstream Symbol Rate : -------5360.537 Ksym/sec
Downstream Interleave Depth :------- taps32Increment4
Downstream Receive Power Level : -------1.4 dBmV
Downstream SNR : -------34.1 dB

Cable Modem Upstream
Upstream Lock : -------Locked
Upstream Channel ID : -------4
Upstream Frequency :
Upstream Modulation : -------QAM16
Upstream Symbol Rate : -------2560 Ksym/sec
Upstream transmit Power Level : -------45.5 dBmV
Upstream Mini-Slot Size : -------2

Cable Modem Upstream Burst

---------------------Req -------Init Maint-------Per Maint------- Short Data -------Long Data
---------------------(1) ----------(3)--------------(4)-------------(5)------------------(6)
Modulation Type-----16QAM-------16QAM----------16QAM---------16QAM------------16QAM
Differential Encoding--Off------------Off-------------Off--------------Off----------------Off
Preamble Length-------128----------256------------256--------------144--------------160
Preamble Value Offset---504----------4--------------4----------------504--------------504
FEC Error Correction (T)---0----------5--------------5-----------------10--------------10
FEC Codeword Information Bytes (k)-16---34----------34--------------86--------------235
Scrambler Seed----------338-------338--------------338--------------338--------------338
Maximum Burst Size-------0-----------0--------------0--------------8---------------------140
Guard Time Size----------8-----------48--------------48--------------8---------------------78
Last Codeword Length----Fixed------ Fixed ---------Fixed--------------Short-------------Short
Scrambler on/off -------On--------------On------- On--------------On ---------------------On



Cable Modem Operation Configuration
Network Access : -------Allowed
Maximum Number of CPEs : -------1
Modem Capability : -------Concatenation Enabled, Fragmentation Enabled, PHS Enabled


Here is all I got so far, I don't know what else to post, if you have any suggestions or anything please help.

Thanks,


bAshIR

[rff123]

After additional troubleshooting that didn't fix the problem, I purchased a new router. Connection is not dropping out. Thanks for all the suggestions.