Scale of Measurements

• 17 Monitoring sites - 7 in US (5 ESnet, 2 vBNS), 2 in Canada, 6 in Europe (ch, de, dk, hu, it, uk), 2 in Asia (jp, tw)

• 1129 monitoring-remote-site pairs

• 379 unique hosts

• 272 sites

• 27 countries

• Data goes back 4 years

• Metrics include response, jitter, loss, reachability

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