RE: Any good method to check network overload?

[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