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Delays
etc.: ping, OWAMP, GPS
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“Bandwidth”:
iperf, pathload, pipechar, netest,
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ABwE
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Utilization:
SNMP
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Topology/tomography:
traceroute, skitter, INCITE
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Routing:
RIPE, routeviews
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Traffic
characterization: netflow, NeTraMet,
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tcpdump,
coralreef
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Visualization:
MRTG, RRD, netgeo, geoplot,
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tcptrace,
xplot
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