Re: operational: icmp echo out of control?
Path latency doesn't change much, you can determine this with very few probes. . . . . Much like web spidering, some simple common sense can help keep probes from becoming a hassle: . . . . * Consider what is the smallest unit of "distinct network topology" you need to map. A very reasonable number would be a /24.
We have been studying these issues as part of the IDMaps project and have two reports quantifying our results. If interested, you can download our papers from: http://idmaps.eecs.umich.edu/papers/rtt.ps.gz http://idmaps.eecs.umich.edu/papers/ap.pdf Cheers, Amgad
I have uploaded a PDF version of our RTT measurement study. You can find it at: http://idmaps.eecs.umich.edu/papers/rtt.pdf Regards, Amgad
Path latency doesn't change much, you can determine this with very few probes. . . . . Much like web spidering, some simple common sense can help keep probes from becoming a hassle: . . . . * Consider what is the smallest unit of "distinct network topology" you need to map. A very reasonable number would be a /24.
We have been studying these issues as part of the IDMaps project and have two reports quantifying our results. If interested, you can download our papers from:
http://idmaps.eecs.umich.edu/papers/rtt.ps.gz http://idmaps.eecs.umich.edu/papers/ap.pdf
Cheers, Amgad
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Amgad Zeitoun