Re: Network Monitoring

[Gary Douglas <dougary () gmail com>]

If you are looking for MRTG type graphs, check out http:// 
www.cacti.net/. Fantastic open source program. Will do snmp  calls to  
your switches, routers, servers, what every supports snmp. It graphs  
the amount of traffic on an interface in the network. We have it  
running on every interface on a network with over 5000 devices.

If you want to know what traffic is actually on that wire, ntop. You  
need to span a port or put a hub in line to get ntop to work. It will  
give you more information on what type of traffic is on the line than  
what you need.

Good luck
Gary

On Sep 20, 2007, at 1:52 PM, Davis Kwan wrote:

> Hi list,
>
> We are currently experiencing a problem with network slowdowns. I was
> wondering if there are any software applications out there that can  
> monitor
> internal traffic to measure the efficiency of the internal network?  
> I want
> to see if the bottleneck is with one of our backbones or if a user is
> flooding the network b/c of spyware. Any suggestions??
>
> Thanks in advance,
> Davis
>
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