Re: [Xen-devel] Bandwidth monitoring?

[Matt Ayres <matta@xxxxxxxxxxxx>]

On Fri, 2005-01-14 at 00:59 -0600, Tim Freeman wrote:
> On Thu, 13 Jan 2005 19:49:01 -0500
> Matt Ayres <matta@xxxxxxxxxxxx> wrote:
> 
> > Hi,
> > 
> > I was wondering if anyone here currently uses a system to monitor total
> > traffic sent/received for each domain.
> 
> Have you looked into mrtg? 
> http://people.ee.ethz.ch/~oetiker/webtools/mrtg/
> 

This falls under the SNMP category so it falls under the same
limitations I stated below.  It's not usable except in the case of
possibly hooking it into a back-end script to load it's data.  Also, for
those that use MRTG i'd highly recommend people look at RTG
(http://rtg.sourceforge.net).

> Also, enforcement is possible:
> http://www.knowplace.org/shaper/index.html
> 

This isn't exactly monitoring, but it still useful.  I actually do have
network QoS working under Xen using iproute2/tc tools and it works fine
loading the rules via the vif-bridge script.

> HTH,
> 
> Tim
> 
> 
> > 
> > Looking at solutions I have eliminated SNMP as a possible solution.
> > Even if the tunnel interface name were static, SNMP goes by the
> > interface id so after a reboot of the host server things would never
> > match up again.  
> > 
> > Adding count rules to the FORWARD chain per device and then using back-
> > end scripts to save/manage the data seems to be a workable solution.
> > I'm not sure if this is the best way to go about it and hence why I am
> > interested if anyone else has tackled the same problem.
> > 
> > Ideas/input anyone?
> > 
> > Thanks,
> > Matt 
-- 



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