How do I monitor a network

Hi,
I am new to network monitoring.
I think that the network connection in my network goes down once and a while for some seconds. I don't know if it's the hardware or the cables or the computers.
Is there a tool that monitor the network so that I can find what the problem is?
I have 8 pc's running (XP) and 1 SBS 2003 with AD. There is a switch, no router.
Thank you for your help
best regards.

TDiscartAsked:
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Kamran ArshadIT AssociateCommented:
Hi,

You can check out the below applications for network monitoring;

Propriety-NMS            

SolarWinds Orion      www.solarwinds.com      Propriety
Adventnet OP Manager      www.adventnet.com      Propriety
CommView      www.tamos.com      Propriety
Observer      www.netinst.com      Propriety

Open-Source NMS            

Ntop      www.ntop.org      LAMP based NMS
Bandwidthd      bandwidthd.sourceforge.net      LAMP based NMS
Etherape      etherape.sourceforge.net      LAMP based NMS
MRTG      oss.oetiker.ch/mrtg      RRDTool
Cacti      www.cacti.net      RRDTool

Personal recommendations are using NTOP, Cacti or Adventnet OP Manager.
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TK-77Commented:
If all you really need to do is find out which PCs/connections are going down, then this free program should help troubleshoot and isolate the problem.

http://www.peermonitor.com/

TK
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