Monitor my network traffic, switches

I have a dell powerconnect 6284 and a Cisco ASA5505 device. I'd like to monitor these devices. I want to preferably use an opensource tool. I looked at OSSIM which uses NTOP and other network tools like nagios but it was mind boggling to configure.

my goal is to see what servers workstations are utilizing traffic. Even for the powerconnect i'd like to see port utilization, this device has a horrible web based gui to see this information
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shankshankAsked:
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tkuennenCommented:
In my opinion, Nagios is the best SNMP monitor due to the customization options as well as reliability, however it can be extremely frustrating to implement. This is especially true when adding RRDTools for graphing.

If you are new to monitoring network devices via SNMP, I would start of with Zenoss, GroundWork, or Cricket.  All three offer pre built RRDTools packages for utilization graphing, and are a bit easier to setup than Nagios.

http://cricket.sourceforge.net/support/doc/
http://www.groundworkopensource.com/
http://www.zenoss.com/
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