DNS problem

[.Pixote.]

Take the crappy computer back to the retailer...

 

[TheWesDude]

the ip of the computer is 100

the default gateway is .1

which is all right and proper

did they check and verify that the router is getting a correct external IP from the ISP DHCP ?

 

[alec]

We decided to do a complete reboot (back to factory settings) and I'm pretty sure that did the trick.

 

[SkuLL]

My friend had a VAIO. Couldn't connect with his wireless. Technician couldn't figure it out, blamed the laptop. Sony shop guy couldn't figure out, blamed the ISP. Then one day, my friend noticed a very well disguised wireless switch on the laptop itself, which was, of course, switched to OFF. It's normally always ON from factory settings, which is why no one even thought about it.

 

[alec]

I think it boils down to something like that, SkuLL. I just went furious when he claimed it was the laptop that was broke. It's less than three weeks old for crying out loud. It all seems to be in perfect working condition so far. Let's hope it stays that way.

In any case: thanks for the help, guys. Much appreciated.

 

[Sam Ecorners]

Run following commands, post results

ipconfig /all
nslookup google.com
(if previous command succeeds)
ping google.com
tracert google.com

 

[TheWesDude]

incog, you need to follow the thread

the laptop is getting an IP from the router

192.168.0.100

the default gateway is 192.168.0.1

the router is giving the info to the laptop

 

[Sam Ecorners]

I did follow the thread. What I don't know is whether router also acts as a local DNS server, whether it resolves DNS lookup, whether it's able to ping out to the web and if not, how far do the packets go. That way, I'll know whether the problem is on the local 192.168.0 network, the gateway, or ISP routing.

The fact that PC is getting the IP from a router is irrelevant. It's expected.

Oh yeah, I do system/network administration for living

 

[TheWesDude]

the fact that the laptop is getting an IP from the router is extremely relevant

it tells you the router is working fine on the local side

the next question is can you ping the routers far side default gateway.

or is the router getting an IP from the ISP.

because the laptop is getting an IP from the router, it tells you the problem is between the router and the ISP POP

 

[Sam Ecorners]

The problem is that we don't know what the problem is. It can be a dns resolution issue, routing issue or local host configuration(that seemed to have been the problem, since restore fixed the problem)

I don't k ow when you got your CCNA and how long your real world experience is, but you're a bit too quick to rule out possibilities.

 

[TheWesDude]

lets review...

DNS resolution issue... ISP
routing isue... we know she is getting an IP from the router, so its on the ISP side/issue
local host configuration? she is getting an IP from the router, so the routers TCP/IP stack is working, and assigning an IP, so the local side of the modem is working.

what we do not know:
if the ISP is assigning her modem an IP
if the ISP has her connection active
if the ISP has her modem activated on her account
if the ISP has her account active

i dont know where your real world experience is, but it is definitely not on the hardware side and how hardware works.

depending on what kind of modem/router it is, the only thing they could possibly do to test is to plug the connection directly into the laptop bypassing the modem/router.

if that is not possible, then the ISP has to send out a tech and/or call to run through the tests.

but the biggest question is if the router itself is getting an IP address.

which can only be discovered by opening the GUI on the modem via opening a browser session to the routers IP.

not by doing a netstat or ipconfig or renew/release.

you may be a server administrator, but CCNA is a network engineer certification. it is a hardware level cert, not software. server/system admin is a software level cert.

you may be un-familiar with how DHCP and DNS works on the hardware side, but i do.

and only small scale networks do DHCP and DNS determination/assignment on the software side.

 

[Kyuu]

Unfortunately, I have no idea what went wrong with the Netsh command because I can't read that language.

I double-checked the command, ran it on my computer just now, should work.

Anyway, if the reset to factory settings worked, then great. Certainly possible something was configured screwy and it got cleared up with the reset.

I can't imagine why everyone doesn't become a computer technician. Isn't troubleshooting them just the funnest thing in the world? And you just found out one of our secrets: when all else fails, just reset everything back to default.

 

[alec]

Isn't troubleshooting them just the funnest thing in the world?

It is actually. I learned quite a bit about how the internet works while looking how to solve this problem. I still don't understand it, though.

And you just found out one of our secrets: when all else fails, just reset everything back to default.

I already knew that trick, but it seemed like overkill for a brandnew computer. I guess it wasn't.

The problem is now officially solved btw. She has been enjoying the internet without problems for the past 24 hours. I assume that if a reset to default settings did the trick it must have been a pretty simple thing, some setting hidden far away somewhere. Big fail is that the technician guys from Telenet (the provider) actually confessed that they did not have the training/experience to solve the problem. I sorta expect that as a customer.

Anyway: thanks again. Much appreciated.

 

[TheWesDude]

Unfortunately, I have no idea what went wrong with the Netsh command because I can't read that language.

i cant read the language either, but i know enough to know what its saying

192.168.0.100 is the laptops IP
255.255.255.0 is the laptops subnet mask
192.168.0.1 is the default gateway

all the lines with DNS are blank which means that the router/modem isnt sending the laptop DNS information which indicates the router/modem isnt getting one.

and you can ignore the IP6 information

and that isnt a netsh its an ipconfig info

 

[mor]

So one of my friends bought herself a Sony Vaio and then took wireless internet to go with it, but she is having problems with her DNS settings. In this screenshot you can see how it is set to "automatic", but that changes automatically into a row of numbers without her doing anyhting special. Why that is a problem? Because then she doesn't have internet any longer.

When it happens, she needs to go to this exact screen and change it back to "automatic DNS" + hit 'ok' ('cause that' all you can do), only to have it change again after an hour or so. The people who installed it don't know why it happens either and I've been googling the problem for two hours now, but I just can't find a solution, I'm really not that good with these sort of settings + it's a new Vaio with Windows 7 and it all looks weird and new to me (XP afficionado). It's an Intel i3 but I doubt this matters.

this has nothing to do with ISP, router setting or anything else but your OS, its probably some wireless utility that comes from the manufacturer - uninstall it.

something network access manage or wireless manger in WIN7 you dont need any of that and if you do work only with it, manual editing of your network setting is pointless since its will always will be overwritten by the external manger and even if its updated setting looks correct:

The right address that pops up is: 192.168.0.1

pointed to the same address as your gateway(your router) still its doesnt mean its not the culprit especially if you have wireless security enabled (its may seem you are connected) and manged by ut or have annoying util like the old IBM one for XP or old one that doesnt work with WEP2 PSK etc etc

anyway my advice is first fix the problem with OS (uninstall the manager if presented) then continue testing if needed.

 

[mor]

the computer should be getting .2 or something
unless the router is configured incorrectly to assign .1

it can get many things from the pool within the range you assigned to it(in those dsl/routers its usually 192.168.0.100 and higher)
but whatever it may be even failing to assign and getting apipa will not change the DNS setting in his win 7 as reported.

 

[Kyuu]

and that isnt a netsh its an ipconfig info

Yes, the top half of the cmd screen in Alec's picture was some ipconfig info. But the last command he typed in was the Netsh command, and then there was some stuff after that which I couldn't read but it obviously didn't work.

Edit: Google translator identified the language as Dutch, which I should have guessed, and did an admirable job translating the error as: "The reinstallation of General failed. The requested operation requires an extension (Run as administrator). There are no user specified settings that may be reintroduced."

Basically, seems as though it failed because he wasn't on an account with administrator privileges. So, I'm still curious to see if the Netsh command would have fixed the problem had it been able to work, but now I guess I'll never know. Ah well.

 

[Ratty Sr.]

That's great and all, except the issue has already been long resolved, so kindly stop bumping this thread, kthx.

Or double-posting in it, for that matter. *glares at mor*