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question about determing network load and bandwidth

I have a cisco ASA firewall, and have been tasked with determining our network load, how much bandwidth we use on a average basis, but I am not certain of how to accurately do this.  I looked in the ASDM, but I am not certain of what I was looking for.  I am really just looking to find our average throughput for a day.
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Wayside_Tech
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Wayside_Tech
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luathasCommented:
You should be able to setup SNMP on the Pix and then monitor it with MRTG (http://oss.oetiker.ch/mrtg/). MRTG would basically query the Pix firewall every 5 mins and give you a daily, weekly, monthly, and yearly average. If you have manageable switches you can also setup monitoring of these devices as well. This can give you a break down of which device or group of devices is using the most bandwidth and can also help with trouble shooting if a workstation or server becomes compromised and you see a sudden increase in bandwidth.
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Wayside_TechAuthor Commented:
That seems quite a lot to get it to work, there is nothing on the switch or firewall that is able to give statistics on this?  i was thinking I could use cacti, but I didnt have it yet, and wondered if there was a cisco tool that i already had that I didnt know.
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rochey2009Commented:
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Wayside_TechAuthor Commented:
Yes, but I wasnt sure of how to read that unfortunately.  I downloaded and installed Cacti, but still cant figure out how to read it.
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rochey2009Commented:
can you post the graph?
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Wayside_TechAuthor Commented:
is this what you are referring to? asdm stats
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rochey2009Commented:
Hi

It looks as though your averaging 6Mbps per second inbound and just over 1Mbps outbound over the 5 minute period displayed.

What is the speed of your WAN link?

It maybe worth purchasing some software, if you have to do monitoring over longer periods of time and regular reporting.
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Wayside_TechAuthor Commented:
our link is a 20Mb connection -
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