Re: bandwidth monitoring

SNMP is the way to go, absolutely, at the switch + possibly router level. There is no other solution that even comes close. If absolutely necessary, you can, as the previous posted mentioned, monitor the servers themselves via SNMP. This generally isn't a good idea, however, and it is best to avoid it if possible (for bandwidth monitoring.. keep in mind you can monitor cpu, memory, and lots of other nifty stuff via snmp on the servers themselves.)

That being said, you'll need a way to collect data, analyze it, store it, and display it in usable means. There is again, one solution that trumps them all:
http://www.cacti.net/

I know I sound really opinionated, but it really is the truth. If they ever finish the PgSQL support, it'll be pure bliss. That's the only thing about the package I don't like, the mySQL requirement. ;)

Cheers,
David

----- Original Message -----
From: Cody Baker <cody@xxxxxxxxxxxxx>
Date: Friday, May 26, 2006 8:12 am
Subject: Re: bandwidth monitoring

Ntop is a good tool, we use it, but my experience is that it's
buggy at
best and downright unusable at times. Also, it's data isn't very
portable. I'd recommend using SNMP data from a managed switch. If
that'snot an option the you might consider using SNMP data from
your router or
worst case directly from each individual server. In terms of software
this generally means net-snmp connected to rrdtool or mrtg. I googled
real quick and
http://www.openxtra.co.uk/resource-
center/open_source_network_monitoring.phpseems to provide a quick
front en to these tools.

Thank You,

Cody Baker
cody@xxxxxxxxxxxxx


Steve Ames wrote:
ntop would work if its actually a hub. ntop would work with a switch
also but you'd have to tell the switch to make sure that your BSD
box gets a copy of all traffic.

On Fri, May 26, 2006 at 08:55:59AM -0700, Jim Pazarena wrote:

Is there the ability to have a server which is in the common hub
monitor bandwidth usage of clients going out the gateway?

My telco will shortly be changing billing practices and bandwidth
usage per client will be extremely important per customer.

Is there a FreeBSD port available to do this, or must I have an
appliance>> in-line that all traffic passes thru?

Thanks!
Jim
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