Analysis of Network Outage Reports 1 Cybersecurity and
Analysis of Network Outage Reports 1 Cybersecurity and Communications Reliability Division – Public Safety & Homeland Security Bureau John Healy December 2017
Data Source 2 Database snapshot as of November 9, 2017 NORS Final Outage Reports through September 2017 were used in the analysis
Frequency of Outages by Month 3 Monthly Trend 1. 2% (down from 1. 6%)
3 Q 17 Hurricane Outage Reports 4 “Hurricane” cited in outage report text fields July (1), August (45), September (279)
Outage Index – For All Outages Except DS 3 -Simplex 5 See ATIS-0100021 Analysis of FCC-Reportable Service Outage Data for a description of the method used to calculate the outage index.
Planned Maintenance 6 Monthly Trend 5. 4% (up from 4. 8%)
DS 3 (Non-Simplex) Events 7 Monthly Trend 1. 3% (down from 1. 8%)
Big DS 3 Outages 8
Big DS 3 Outages 9 Monthly Trend 1. 6% (down from 2. 1%)
DS 3 -Simplex 10 Monthly Trend 1. 3% (down from 1. 9%)
Fiber Cut 11 Monthly Trend flat 0% (down from 0. 6%)
E 911 12 Monthly Trend 0. 5% (down from 1. 0%)
Very Large E 911 Outages 13 Monthly Trend flat 0% (unchanged)
E 911 – Phase 2 Events 14 Monthly Trend 2. 5% (up from 2. 4%)
Wireline 15 Monthly Trend flat 0% (unchanged) Wireline outages are all outages for which the Reason Reportable was at least 900, 000 wireline user-minutes.
Wireless 16 Monthly Trend 0. 9% (unchanged)
Vo. IP 17 Monthly Trend 6. 0% (down from 6. 1%)
Environmental – External 18 Monthly Trend 0. 4% (down from 1. 2%)
SS 7 19 Monthly Trend -2. 2% (up from -2. 3%)
Malicious Events 20 Monthly Trend -3. 4% (down from -2. 3%)
Malicious Activity 21 The figures for 2017 are through September.
Hardware Failure 22 Monthly Trend 1. 3% (down from 1. 6%)
Power Failure 23 Monthly Trend 0. 6% (down from 1. 9%)
Diversity Failure 24 Monthly Trend 0. 7% (down from 1. 8%)
Duration Trends: DS 3 Non-Simplex 25 The duration of DS 3 Non-Simplex outages has decreased from 2016 to 2017 (statistically significant using a Mann-Whitney test).
Duration Trends: E 911 26 7 The duration of E 911 outages is statistically unchanged in 2017 compared with 2016 (using a Mann. Whitney test).
Duration Trends: Wireline 27 The duration of wireline outages is statistically unchanged in 2017 compared with 2016 (using a Mann. Whitney test).
Duration Trends: Wireless 28 The duration of wireless outages is statistically unchanged in 2017 compared with 2016 (using a Mann. Whitney test).
Duration Trends: DS 3 Simplex 29 The duration of DS 3 Simplex outages is statistically unchanged in 2017 compared with 2016 (using a Mann. Whitney test).
Duration Trends: Vo. IP 30 The duration of Vo. IP outages has increased from 2016 to 2017 (statistically significant using a Mann-Whitney test).
Duration Trends: Other Special Facilities 31 6 The duration of other special facilities outages is statistically unchanged from 2016 to 2017 (using a Mann. Whitney test).
Test for Trend in Event Duration Non-DS 3 -Simplex Outages DS 3 -Simplex Events Only Data from 10/2014 thru 9/2017 Rank Correlation of duration with date is -. 043 and is significant at the. 0001 level Conclusion: Durations of Non-DS 3 -Simplex Outages have shortened over the period from 10/2014 to 9/2017. Rank Correlation of duration with date is. 060 and is significant at the. 0001 level Conclusion: Durations of DS 3 -Simplex Events have lengthened over the period from 10/2014 to 9/2017. 32
NORS Transition 33 March 6, 2017 – Moved to the production version of NORS 3. 0 on Service. Now platform Monthly NORS Coordinators Meetings NORS User Manual Ø NRSC suggestions pending DS 3 Simplex threshold change Going from DS 3 s to OC 3 s
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