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Monitor network connection

Is there a tool that I can put on each of the 3 computers we have here at work to monitor the connection to the Internet and/or router? I'm having issues and I'm trying to pin it down to a cord, computer, router or cable modem.

I don't need anything fancy, I envision a daily graph showing when the computer could connect to the internet and when it couldn't.

Any Ideas?

Imal Upalakshitha

use this free version software http://www.paessler.com/prtg

jacobstewart

Wireshark will also work.

hrolsons

ASKER

So one of the computers is definatley losing connection many times an hour. Would you start with testing the cords?

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jacobstewart

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hrolsons

ASKER

I ended up using this:

http://code.google.com/p/internetconnectivitymonitor/

The computer in question had 1300 disconnects in a 24 hour period. I have an electronic thing that checks cords and the cord is fine. I switched to wireless and I have no disconnects.

I don't want to go wireless(for various reasons), so now I'm suspecting the Ethernet port. Am I going about this right and if so, what next?

jacobstewart

Did you swap cables? Both at the patch panel/switch and from the wall to the pc?

Also try another switch port. These are quick things to test. You can also purchase a new NIC. Depending on the age of the computer the card will be pci or pci express.

hrolsons

ASKER

I ended up having less errors when I went wireless on all the machines. Doesn't make much sense.

nam0a

faulty cable or switch, what's the result after replacing them?

hrolsons

ASKER

I don't know what to do with this thread. I've now switched back to wired and have only had 1 error in 4 days.

HollywoodRay

Are you running DNS and DHCH services? Check to make sure there are no conflicts, where more than one machine has the the same host name or address.

Ray