RE: Any good method to check network overload?

["David Gillett" <gillettdavid () fhda edu>]

  I use MRTG for the boxes I have working/usable SNMP
implementations on.

  It doesn't handle outages/crashes very well.  it just
treats the last successfully retrieved data volume as
continuing until new data becomes available.
  There are some boxes I need to monitor, on which SNMP
is broken or unavailable.
  I'm not sure whether it would meet the original
poster's need, or not.

David Gillett


> -----Original Message-----
> From: Chris Berry [mailto:compjma () hotmail com]
> Sent: March 5, 2003 15:44
> To: security-basics () securityfocus com
> Subject: RE: Any good method to check network overload?
>
>
> > From: swin <swin () student dlut edu cn>
> > David Wrote:
> > > This suggests that if ping times are consistently more 
> than some value,
> > > or are timing out, then the network is probably overloaded.  (Pings
> > > will also time out if the router is down, but you probably 
> want to alert
> > > for that, too.  If you need to distinguish between the two 
> cases, compare
> > > pings OF the router with pings THROUGH the router.)
> >
> >   What we want is an reliable way to check overload ,and we 
> especially
> > accentuate it should be reliable,this method sounds a lttle 
> rough,indeed
> > it can check if system is overload,but is it very reliable 
> for automatic
> > check?and we hope to install the check program on the server 
> or router 
> > itself,if so ,is it different?
> >
> >   Thanks for you suggestion!
> >
> >   swin. wang
>
> Maybe I'm missing something, but what's wrong with using MRTG?
>
> http://people.ee.ethz.ch/~oetiker/webtools/mrtg/
>
> I mean, why reinvent the wheel?
>
> Chris Berry
> compjma () hotmail com
> Systems Administrator
> JM Associates
>
> "Linux and I have a love/hate relationship.  I hate its 
> complexity until I 
> figure out how something works, then I love its power."
>
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