Network monitoring tools

[Ed Wilts]

On Thu, Aug 12, 2004 at 10:43:09AM -0400, Ryan Golhar wrote:
> Can anyone recommend a good, free network monitoring tool?
> 
> I have a lab of about 20 Linux boxes connected to a switch.  It seems
> like every once in a while, the performance of all the machines drops
> dramatically, and I believe its related to the network, as all the home
> directories are NFS mounted, but not sure where.
> 
> I'd like to get some sort of an idea of network usage and what is taking
> up the bandwidth.  

It depends on the switch. If the switch is snmp-cabable, then install
mrtg.  You can then monitor the traffic on every switch port.  Once
you've got the port hammered down, use something like ethereal to figure
out what the traffic is.

-- 
Ed Wilts, RHCE
Mounds View, MN, USA
mailto:ewilts at ewilts.org
Member #1, Red Hat Community Ambassador Program