Thread: Internet stops working, ping to router fails

Hi,

I have a T-KD 318-EUI router configured on my pc running windows xp sp3. Since the past three days i am facing a problem, internet stops working on my pc and ping to 192.168.1.1(default gateway) starts returning 'request timed out'.

However, if i restart the pc, internet starts working again and there are no time outs upon pinging the router.

There are no definite time patterns, the internet just stops working every now and then and i have to restart the machine. Restarting the router doesn't help.

The ethernet connection to the system appears to be fine and the system try icon doesn't show any disconnection with the router when i loose my connection and ping to router. I have also tried reinstalling the pc ethernet driver but no luck. Has the router gone faulty?

Please help......

FEEDBACK needed:

Post data from Device Info/Statistics/ADSL menu page.
Mod mode selected snr u/l d/l attn u/l d/l line rate and rate only.
or
post as Annexure here.

INFO:
Model is similar to Beetel 220BX/new bsnl Ut300R2U.
Check my signature links.
( also 192.168.1.1 thread )
Update : Old model Ut300r2U ??

For FORUM USE

http://www.indiabroadband.net/comput...tml#post315289 (Monitor Screen Shot)

Hi essbebe ,

Please have a look at the snapshots.

Seems OK.
What is the Ip address you entered to access modem settings ?
You may try DNS 208.67.220.220 and DNS 8.8.8.8

In computer
START
RUN
type cmd
OK
New window
type [COLOR="Red"ipconfig /all][/COLOR]
Copy/Paste data here.

confirm modem/model/make/number.
http://www.mydataone.net/router/utstar300r2u.html
Appears you are on "Dialer" mode.
Try "Always On" PPP/PPPoE mode.
Disable
"bridged" in Wan page and select PPP/PPPoE

Thanks a lot for your prompt responses.

I use the ip address 192.168.1.1 to access the modem

Here is the data from ipconfig command: -

C:\>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : amd
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon 88E8001/8003/8010 PCI
Gigabit Ethernet Controller
Physical Address. . . . . . . . . : 00-11-2F-E0-B8-5A
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.8
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 59.179.243.70
203.94.243.70

Yes it is the same modem as identified by you, it looks like the third one from the left in the top row in the picture at the below URL: -

//mp.bsnl.co.in/bb/modems.htm

(Sorry i can't paste URLs as i have less than 15 posts, please edit the above URL to add http)

I am already using "Always On" PPP/PPPoE mode.

Also, i think all commands report good when the connection is working fine. Can you suggest a diagnostic that i should run next time when my connection goes down. Since i loose communication with the modem i won't be able to access it through the URL //192.168.1.1



Once again thanks for your help....

Since i loose communication with the modem i won't be able to access it through the URL //192.168.1.1

How ?
whether connected to Internet or not, you have to access the modem settings all the time.

Change dns in modem page. google 8.8.8.8 opendns 208.67.220.220mode.

Have you tried the "ALWAYS ON " mode ?

he says...

I am already using "Always On" PPP/PPPoE mode.

Vikrant: have you tried unplugging and replugging the networkcable --- both ends. If possiblem, try using a different network cable. Although Windows is not telling you that the network is disconected, this should still be checked. Does the rj-45 socket on your PC have status lights? Do you get a light come on when the cable is connected? Does the LAN light come on when the cable is connected? Is there any change when this fault occurs?

Essbebe: I am saying that when my internet stops working, i am unable to login to router through //192.168.1.1 because the disconnection is due to lost communication of the pc with the router. And so if i ping 192.168.1.1 or if i try to access router through login page, it fails.


Nick: I have tried replugging the cables and that hasn't helped. RJ-45 port on my pc has lights and it appears to be working fine and there is no change when internet stops working. I suspect that there is a problem with the LAN cable or the router itself.

Also, i have been recently hunting for a good windows registry cleaner for my PC and have also tried some of them. Do you think one of them can be a culprit?

I suspect that there is a problem with the LAN cable or the router itself

.
unlikely...
Connection to Internet: possible/access to modem/surfing OK.



SEE this link: suggest additional comments when your problem solved !
http://www.indiabroadband.net/broadb...tml#post284804 (192.168.1.1 No access !)

TEST:
When connected to Internet
open 192.168.1.1 select Device Info Page.( PIC1)
Disconnect Rj11 from modem.
Any change in values ? Refresh page
Feedback.
2.
Tried "Always On " connection?

3.
In Modem enable DHCP give range 192.168.1.3 to 192.168.1.5
Network settings :
Obtain IP address automatically.
apply Save.
4.
to check ethernet card is faulty or not.

May have an USB port. ( drivers available )
can you try that connection/mode..
Internet no connection.

5.
What changes you want to make in modem settings ?

-

Opened device info page and disconnected RJ11. Refreshed the page and the values changed, status changed to disconnected.

DHCP already has values in the range 192.168.1.3 to 192.168.1.34

I don't have the cable for USB since this modem is on rent from MTNL. Here MTNL doesn't offer an option to purchase the modem like BSNL does. Usually these modems are old used modems and are often repaired. I had an MT882 earlier which broke down and they replaced it.


I haven't tried resetting the modem to factory settings as mentioned in your troubleshooting page. Will do this right away and will let you know.

If you RESET the modem, how will you access the pages ?
Wait.....
Take screeenshots of all pages now and post it here.

Originally Posted by vikrant1982

Nick: I have tried replugging the cables and that hasn't helped. RJ-45 port on my pc has lights and it appears to be working fine and there is no change when internet stops working. I suspect that there is a problem with the LAN cable or the router itself.

Whist this should say that the harware is ok, it is sometimes just not black and white. I once encountered a network cable (and I've met many ) that would not work on one particular PC --- which rendered the standard test-it-elsewhere procedure nonsense!

If I were you, I think I'd ask MNTL for a new modem. Had a similar experience with Airtel, a few month's back. On the engineers first visit, we thought that the modem was simply dropping the link. Only later did we both realise it was rebooting. New (new to me, but looking a bit dusty!) modem; end of problem. Rock solid ever since.

Also, i have been recently hunting for a good windows registry cleaner for my PC and have also tried some of them. Do you think one of them can be a culprit?

Frankly, I doubt it very much.

You say you've removed the NIC drivers and re-installed. My hunch is that is about all you can do with Windows.

Only other thing is to google for your motherboard/Network-chip and see if there is any known problem, or any problem associated with any BIOS level.

I suggest this, because there is with mine! But with mine... if the network interface is detected at boot, that's it, no more problem. Just sometimes it takes a couple of attempts for that to happen.

Under the try-anything heading: if you are using DHCP, try a fixed address instead. Again: not much hope it will do anything to change anything, because you don't appear to have a problem with DHCP.

Well for now i have just logged a complaint with MTNL and they say someone will come tomorrow to check the modem. Lets see what happens.

TRY anything :!!!
WinSockFix Download - Softpedia.
Feedback.

I have already formatted my PC day before yesterday to fix some other problem too. So now the registry problem is ruled out.

I have not yet got the modem replaced as the mtnl guy is reluctant to do this and says there is problem with the PC.

Luckily my dad has come here yesterday along with his laptop(a presario v6608AU). I am running the connection on the laptop and it appears to be working fine so far.


Now i am sceptical about my PCs onboard LAN chip. I'll run the connection on my PC again. If i encounter the problem i'll try to ping the loopback IP 127.0.0.1 to see if the LAN card is faulty or not. Do you guys have any other suggestions?

Read the very useful explanation at forums.techguy.org/networking/750895-loopback-ping.html. pinging the loopback does not really test the card. Do as recommended in that article.

Thanks for that link Nick. I have gone through the discussion. So does that mean i have no way of testing whether my LAN card is working fine or not, without pinging the gateway?

Since everything appears fine in device manager all the time, is there a tool that i can run to test my card when the problem reoccurs?

i have no way of testing whether my LAN card is working fine or not....

Start Network LAN
Properties
network settings page
On top your ethernet card is listed.
click box configure.
See the options. enabled drivers working or not.

Or in Device Manager :
yellow mark, if there is a problem with the card.

Hi Essbebe, as i said i have already checked the LAN card in device manager, there are no driver issues reported and it says that the device is working fine.

Device manager can show it is ok when it is physically not ok. I don't know why, but I don't think it is a comlete hardware test.

Since everything appears fine in device manager all the time, is there a tool that i can run to test my card when the problem reoccurs?

According to the article, the guy recommend pinging your IP address, rather than loopback. I guess that gets as far as the card itself.

You could try getting hold of a switch/hub, connect up with another machine on the net (eg the laptop you mentioned). When you loose connectivity to the net, and you can't ping the modem, see if you can ping the other machine. If you can, modem is at fault if you can't, your board network interface is at fault.

This approach, of course, gives you side by side testing: your net connection has gone down, has his?

That's the best tool I can think of!

Originally Posted by vikrant1982

Hi essbebe ,

Please have a look at the snapshots.

sorry i cant seeeeee

Hi Sansam, the snapshots are still there, don't know why you can't see them.

Nick, will do as you say, also if it is a hardware malfunction, do you think a motherboard BIOS reset might help since this is an onboard chip?

In the past i have seen some hardware issues getting resolved after a BIOS reset.

@sansam.
T-KD 318-EUI router
From Post No 3.
http://www.indiabroadband.net/attach...fails-pic1.jpg

http://www.indiabroadband.net/attach...fails-pic2.jpg

http://www.indiabroadband.net/attach...fails-pic3.jpg

Originally Posted by vikrant1982

Nick, will do as you say, also if it is a hardware malfunction, do you think a motherboard BIOS reset might help since this is an onboard chip?

Whilst I doubt it ... it does no harm to try!

Or at least, it will do no harm if done strictly in accordance with the motherboard manual

Speaking of BIOS... if Gigabyte, there may be a "Smart Lan" network test in the BIOS. Sorry if this was mentioned before. Other motherboard manufacturers might have something similar. It is supposed to test the cable, but if the net chip is not running, the test will "go" nowhere.

Ok guys, i think i have the answer now. It seems like my CHEAP onboard lan chip is the culprit. Its a Marvell Yukon 88E8001/8003/8010 ethernet controller.

A lot of people out there in other forums have reported the same problem with onboard Marvell chips. Its basically a driver related issue and the company has not been able to completely rectify this through driver updates for their various chips.

The only work around that some people have found is buying a seperate lan card, others have solved the problem by reverting back to previous stable drivers and yet others have learnt to live with this problem.
Seems like the problem starts kicking in after some windows update.

For my chip(88E8001), i have yet to figure out the last driver which was stable. For now i have the latest update ver 11.30.1.3 and it doesn't work properly.

Since the internet connection was working fine on the laptop, i think this is the only possible cause of the problem. I'll try to look for a stable driver for my chip, if it doesn't help, i think i'll buy a seperate lan card(Realtek or D-link)

A new card will cost just around Rs 200/-

What do you guys suggest?