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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?
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hrolsons
Asked:
hrolsons
1 Solution
 
upalakshithaCommented:
use this free version software  http://www.paessler.com/prtg
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jacobstewartCommented:
Wireshark will also work.
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hrolsonsAuthor Commented:
So one of the computers is definatley losing connection many times an hour.  Would you start with testing the cords?
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jacobstewartCommented:
cables yes.

Also check to make sure the computer isn't set to disable the nic to conserve power.  If the computer goes to sleep the nic will be disabled causing it to loose connection.
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hrolsonsAuthor Commented:
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?
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jacobstewartCommented:
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.
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hrolsonsAuthor Commented:
I ended up having less errors when I went wireless on all the machines.  Doesn't make much sense.
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nam0aCommented:
faulty cable or switch, what's the result after replacing them?
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hrolsonsAuthor Commented:
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.
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HollywoodRayCommented:
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
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