RE: Any good method to check network overload?

["Chris Berry" <compjma () hotmail com>]

> From: swin <swin () student dlut edu cn>
>    You all misunderstood me! what I want isn't a tool to check network
> flow or just want to have it report.
>    I'm doing a research  to find a good model to judge if network
> is overload automaticlly,it may be a good algorithm but not a tool.no
> matter to use ntop or mrtg, it just give a  statistic of network flow,
> this is not hard to achive.but my problem is how to  judge network
> overload in real-time and offer a countermeasure ,but not a monitor tool.
>    David give a suggestion to check time delay in pinging,but I think this
> is not reliable.as we known ,we can get the data in realtime just like 
> intop can do,but with this data how can we say at certain time the network
> is overloaded ,what we need is a benchmark to decide if it is overloaded,
> but what should this benchmark be and how to get this benchmark are the
> problems.
>    I don't know if I have explain it clearly,but I do holp get suggestions
> of it form others.

Ok, what about running a sniffer, logging all info to a database, and run 
some monitoring scripts on the database that report deviance from norm, you 
can tweak the settings for a few months till it does what you want.  Should 
be no load, although you'll have to have a special setup if you're using 
switches.

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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