Not internet acces/Pc running slow on network

Skillachi

Skillachi

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Hey guys am having some problems on my network at work which I need a solution to help fix.

The problems is that there are 19 pc's in the office and only one is having this problem. That problematic system runs very slow on the network when accessing the internet and sometimes it does not get an ip address but the other 18 pc's never has this problem. The weird thing is when I us my laptop on that same connection everything works find. Also am getting this message at he command prompt.

Tunnel adapter local area connection* 9:
connection-specific DNS Suffix . :
IPv6 Address........... :2001:0:9de8:6ab8:38e7:2d12:3f57:fe98
Link-Local IPv6 Address......:fe80::38e7:2d12:3f57:fe98%12
Default Gateway.........: ::

This I've tried so far.

1) tried ping which I notice some packets fell short
2) Replace the machine all together with the same problems
3) Replace the patch cable
4) scanned for virus found non
5)Update network card drivers

when I ping this is the results Packets: sent =4, Received = 0, Lost = 4 (100%),
All help is highly appreciated.
 
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I carry a usb to gigabit adaptor and connect using that just to totally rule out the nic etc. I've just solved a problem with dropped packets on one of my jobs. Just use it to isolate the problem maybe.
 
Since you say that you've replaced the machine all-together, then you need to be looking at the cabling between the computer's location and the other end (router, switch, etc.).

As long as the computer that you put in its place worked ok at another locale then look at a cabling issue.

Could it be that the range of available IP addresses limits connectivity of only these 19 devices? I've done that here at my office and scratched my head for a good long time trying figure out what I had done.
 
I'm sorry - your original post seems to be contradictory.

You say your laptop runs fine at that connection but you also say that you have replaced the PC entirely but the problem remains. Is this correct?
 
@seedubya

Yes that's correct, That's the weird part have me scratching my head. So as a work around I bought a Belkin wifi adapter which I setup on that same problematic machine and so far its working fine. That is also interesting to me as well. But I did notice on the patch panel which is the other end of the patch cable is connected to from that problematic pc is that the activity light is not on. It only comes on then shuts off whenever I unplug then plug it back in then shuts of again. So am thinking the problem could be from there... So in the mean time am waiting on the cable guy to come in so we can find a solution...
 
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NYJimbo said:
Swap ports AT THE ROUTER/SWITCH/HUB, see if that helps.
Click to expand...

Actually I did that but with ports that was not in use and the activity light didn't come on. I didn't wanna try it on an active port due to the fact that workers was in the office at the time so I didn't want to disconnect it to try a different port while they were working. But I will try it really soon when the office is not busy.
 
1. Did you test the cabling with a real tester? Not one of those blinky light things.

2. Have you tried re-punching all connections from one end to the other?

3. Have you short cabled the subject machine to the same port on the switch?
 
markverhyden said:
1. Did you test the cabling with a real tester? Not one of those blinky light things.

2. Have you tried re-punching all connections from one end to the other?

3. Have you short cabled the subject machine to the same port on the switch?
Click to expand...

Soon All three question will be put to the test soon am just waiting on the Patch Cable Tech. I was not there when he came in the first time. However, he did replace the patch cable to the problematic machine but with same results. By the was what is the difference between the cable testers? those with blinking lights and non-lights??
 
Skillachi said:
Soon All three question will be put to the test soon am just waiting on the Patch Cable Tech. I was not there when he came in the first time. However, he did replace the patch cable to the problematic machine but with same results. By the was what is the difference between the cable testers? those with blinking lights and non-lights??
Click to expand...

This is what I am refering to when I say blinky light thing.

http://i01.i.aliimg.com/wsphoto/v0/...ter-b-font-For-RJ11-RJ12-RJ45-font-b-Cat5.jpg

Basically it is a special purpose continuity tester. Don't mistake me I'm not knocking people that use them. I still have a couple and it's easier to toss it in my bag than carrying my ValidatorPro which comes in another bag. But those do not really convey any information for a run that has intermittent connection issues.

Back when I was first starting out I ran some cable for a customer. Very simple run. Later he wanted the entire 3 story home office wired and I told him that he needed to get an electrician since it was beyond my skills (at the time). The electrician made all of the runs. One location kept having intermittent connection problems. The electrician said he used some like I linked to above. Used mine and it showed everything OK.

So I did some research and bought a TestUM LanRover. It does a bit more than continuity. Gives cable length, if there is a break and estimate where it is, and if there is any induced voltage. That problem run had some induced voltage which most likely was causing the problem.

http://www.ebay.com/sch/i.html?_nkw...e=c&geo_id=10232&keyword=test+um+tp600&crdt=0

Used that for a number of years but decided to upgrade to something better. After looking around there was no way I was going to pay 7,000+ for a Fluke certifier. So I got a ValidatorPro 1150. Not cheap by any means but great features and you can generate a printed report.

http://www.jdsu.com/productliterature/validatorpro_nt_ds_net_tm_ae.pdf

There are others out there, ByteBrothers is popular with some techs.

While I have not been able to get additional revenues just based on the device I have shown customers I am more capable than others. So that helps with getting repeat customers.

The reason I asked if you had short cabled and re-punched is those are two things I would try irregardless of the test results. Many times just replacing the jack(s) solves the problem.
 
I thinking that you have a problem with your NIC in that machine itself.

Sounds to me like your laptop is working fine when using the same patch cable that you use on the desktop?

If so then it's 100% on the computers end and you either have a software or hardware issue (blanket statement, I know). My bet is that NIC.

EDIT:

When you say "replaced the computer" do you mean you brought in a different desktop and it would not work? Or did you format the machine and re install windows / run a recovery disk.
 
brandonkick said:
I thinking that you have a problem with your NIC in that machine itself.

Sounds to me like your laptop is working fine when using the same patch cable that you use on the desktop?

If so then it's 100% on the computers end and you either have a software or hardware issue (blanket statement, I know). My bet is that NIC.

EDIT:

When you say "replaced the computer" do you mean you brought in a different desktop and it would not work? Or did you format the machine and re install windows / run a recovery disk.
Click to expand...

I mean replace the desktop that wast there with a brand new desktop from hp its a Hp Elite 8300
 
Hey guys quick update,

The cable tech and I will be working on the problem today, So I'll let you guys know how it went.....
 
Hi

It may be grounding issue, loose recepticals... You should check power recepticals measure voltages between ground and neutral, neutral and phase and phase to ground.. Post results.

Also measure voltage between ground on that machine and ground where switch is plugged in, electrician can do this. If lines are overloaded or grounds are not good it creates voltage potential between computers and switch, it may effect network connectivity and speed.

This may be the case because laptop is isolated from the ground so there is no potential diferences between laptop and switch.

If ac adapter or powersupply of the switch is weak due to the bad filtering capacitors inside it may do strange problems like this as well. It makes ripple higer and it may effect processors in the switch.

Some ethernet cards can be limited to 10mbps instead of 100/1000 by setting firmware, i dont think this is the case with your problem.
 
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