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										Summary
DS-0749
														internet_outage_survey_it42w-20110726
														Dataset
														University of Southern California-Information Sciences Institute
                                                        University of Southern California-Information Sciences Institute
                                                        07/26/2011
														08/08/2011
    														56 (lowest rank is 56)
                                                        Description
outages in a sample of IPv4 /24 blocks
To collect this data, a subset of Internet IP address blocks were pinged by sending ICMP ECHO_REQUEST (PING) packet. The response (if it ever came within 11 minutes time interval) was recorded in this data set. Probe was repeated every 11 minutes. In all, approximately 20k /24 subnets were periodically reprobed. Outages are analyzed and reported on the responses.
Additional Details
																3.8MB
															
														false
														false
														southern, california, sciences, institute, survey, 20110726, outage, 749, internet_outage_survey_it42w-20110726, it42w, icmp, ping, sweep, no-ip-anonymization, ip-address, address-collection, university of southern california-information sciences institute, 2011, blocks, outages, ipv4, sample, minutes, pinged, response, responses, interval, time, request, collect, subset, echo, probe, space, reprobed, repeated, reported, sending, subnets, periodically, analyzed, address space status data, packet, 20k, status
														ip-address sweep address-collection ping icmp no-IP-anonymization