The Dude network monitor

Once again "the Dude" has come to my rescue. This program is great at finding network problems.  This picture shows a very unstable network.  Everything should be green (working fine) or red (turned off).  The orange indicates that they are having issues.  This is a screen capture of the network status when the cable to the main server was bad, It failed to work at 1 gig and was unreliable at 100 M/s.  The solution was to replace the old network cable with a category 5E cable.  The old cable was not connected correctly.

Since having that problem I have ordered a network cable tester on EBay that promises to be able to detect if the pairs are connected correctly. I will post more on that once the tester arrives.