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i have windows 2k sp4 with all security updates from windowsupdate. i'm using adsl with alcatel speedtouch 510 v4 ethernet modem. everyonce in a while my internet connection drops and i can not disconnect and reconnect to the internet. windows 2000 still thinks its connected but the connection has been dropped. i remember my sister's win2k computer did this on dial up and my dad's has done it once in a while. this is really making me mad, does anyone know how to fix it?
Make sure that you have everything configured alright. Check your firewall logs, and make sure that the firewall settings are all okay.
Edit: Make sure that you have the DSL Configured correctly...the IP and DNS are not conflicting somehow, and that you have all of the proper protocols running. Aside from that, I don't know what to say.
It sounds to me like your dsl router is the culprit here, if win2k still shows the interface is up. Can you ping the internal IP for the router? (i use bellsouth dsl and it uses the 192.168.1.x range I believe)
Have you gone into the router to see if there are errors or what the link state says? What lights are on on the dsl router?
We have those Acatel modems at our office and every one in a while they need to be reset. Turning off the power for a minute or so usually helps. If that does not work, I would open up Network and Dial Up connection (when it is down) and right click on the Local Area Connection. Then click disable. After it disables itself right click it again and click enable. That might fix the problem temporarly.
yes everything is configured properly. its not a dsl router, its a dsl modem. i dont run a firewall and i know this isnt a configuration problem because it happens to every win2k box i work with at least once. i remember it hapening a lot with the blaster worm around but i've been patched for that. i know for a fact this is a win2k problem, not a configuration/modem problem.
(p.s. the modem CAN act like a router, but i cant make it do that due to JTC not giving me the router setup cd.)
Well, I support 200 win2k boxes at my current site and I've never seen a problem like this occur, except when the gear 2k was wired to was screwy. As CXGJarrod stated, those need to be reset every now and then. Bellsouth was nice enough to give us a westel modem for our house, we have to pull the power on it at least once a week, until recently, I think heat may have been playing a factor, so I made sure to keep it venitlated (not put other hardware on top of it) and it's been ok.
I use modem and router somewhat interchangeably, sorry. Even though your hardware is a modem, Id imagine that it has some sort of config page where you can test connectivity, most all of them do now adays. If you really think its 2ks problem though, you could look at updating your drivers for your nic. Some of the newer gigabit nics ship with flakey drivers.
I have Windows XP on my laptop and use WIFI wireless access, and occasionaly have everthing hang, as if my firewall was blocking everything. It is not the firewall in my case though. It is an incorrect IP address.
I go into network connections and pull up my connection, go to the support tab and then down to 'Repair". After it resets the IP address, everything works fine.
I don't know if 2000 has the same feature, or if this is what is happening to you, but you might check it.
yeah i'll look at updating the drivers. you may have to reset it about once a week but its once a day for me. there is no other hardware on the modem. you can only configure the router when you connect it to a switch directly and there isnt really anything to do.
it may be due to messed up isp because i know my isp has problems. for one thing my dns and rdns dont go together. but then again i have had this happen on dial up modems on all sorts of ISPs
What you may want to do is statically set your DNS settings in win2k to someting that doesn't change. If I run into a situation where an ISP sends me crap DHCP variables, I statically set to the main DNS servers of a local university or big isp.
You could get the IP from say, ns1.sprint.net, or ns1.mindspring.com or whatnot, and statically set those in your DNS settings in 2k, instead of relying on your crappy isp.
Just a thought. Of course, some isps might not appreciate you piggy backing on their service, BUT, it might be good to try for uh, diagnostics or whatnot.
You may also have problems with your phone lines. Call up the DSL company and see if they can test the lines. We had them do that (because our phone lines were not working correctly) and they found out that rats had been munching on our cables inside the main utility room in our building.Quote:
Originally posted here by wassup
it may be due to messed up isp because i know my isp has problems. for one thing my dns and rdns dont go together. but then again i have had this happen on dial up modems on all sorts of ISPs
when you do lose the connection see if it's a DNS issue or a network issue. Most of the posters are correct in assuming it's the Router/Modem and beyond because that is almost always the case in scenarios like this. Next time it drops ping the router, then your ISP gateway by name. If that doesn't work ping them both by address. If you get a ping by ip the modem, win2k and the ISP gateway are OK. Now ping the DNS server by address. If it's not responding by address it's not resolving and like stated you can use others as backups. Call you ISP and you may find that is an old DNS server just hanging out (I can count 10 times this has happened to me) or they may give you and address for some other backups or new DNS boxes. Also ping the DNS server by IP, it may have problems and keeps rebooting etc. Hope that helps a little.
I have also run into problems where the router/modem was assigning bad numbers to my NIC that matched the internal gatway address of the modem and it would crap out until reboot. But you have to see if you can still ping ISP hops via IP when your internet stops working. That is a critical step.
First off, technically a DSL connection has no modem. There is no moulation/demodulation since it's a digital connection all the way through. Another sticking point is the fact that cable companies call their connection devices cable modem, this is another fallicy since they are also digital throughout. It's a misnomer.
You really have to have an idea of what you are working with before you can effectively troubleshoot the problem.
Check your DSL router manufacturer's websites for any caveats before posing this type of question. They should realize their product drops connections and fix the problem.
Another bit of advise, troubleshoot your LAN before moving on. Always work from the simplest problem to the more complicated. You'll save yourself allot of time.
Actually if you want to get technical they are Modems. They modulate and demodulate frequencies above the voice channel from 100Khz to 1.1 Magahertz. Sure there are many flavors but that is how the signal gets from the house or office to the CO. That's why normal phone lines work and most of the time the CO doesn't need conditioning equipment and you can put a filter on the line and still use voice since it's above normal telco speech. Even DSL modems sold as DSL routers have built in modems. :)
Cable is the same only coax supports a 6 Mhz signal witch most likely uses QAM, Quatrature Amplitude Modulation. There is a modulator/demodulator in a cable box.