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This page shows my network availability and performance statistics connected to the Australian National Broadband Network. It bases on earlier pages that I wrote for the DSL and satellite connections.

I had hoped that with the advent of the NBN, this page would no longer be needed. Unfortunately, this has proven not to be the case. While I don't have issues with throughput, the availability has been the worst I have ever experienced, with outages of up to 48 hours. It's not clear where the problem lies, but I have observed serious issues with the DHCP authentication that my ISP uses. More here when I understand the situation better.

The graphs show:

I previously had parameters "link status" and "TCP speed”, but they no longer seem to make much sense.

The graphs were made with gnuplot, and I'm not very happy with the smoothing. In particular, the right-hand side of smoothed graphs has too much influence, and it's easy to get the false impression that the link status or TCP speed have changed significantly in the last few minutes. If anybody can point me at a way to fix this problem, I'd be grateful.

Click on the graphs for a 1600x1200 version.

NBN link statistics NBN link statistics

NBN link statistics NBN link statistics

NBN link statistics NBN link statistics

Detailed outage information

This section monitors the NBN link for outages, including planned outages, which currently make up the majority. I have manually edited the data to remove false positives, such as when moving house. I have a program that evaluates the outage information and produces detailed outage information. Here's the information on the past 20 outages, along with the overall statistics:

Start time End time  Duration   Badness        from                    to
                     (seconds)

1516135875 1516135911     36	  0.001	# 17 January 2018 07:51:15 17 January 2018 07:51:51
1516137516 1516137552     36	  2.243	# 17 January 2018 08:18:36 17 January 2018 08:19:12
1516137994 1516138009     15	  8.145	# 17 January 2018 08:26:34 17 January 2018 08:26:49
1516139142 1516139199     57	  3.177	# 17 January 2018 08:45:42 17 January 2018 08:46:39
1516140169 1516140279    110	  3.711	# 17 January 2018 09:02:49 17 January 2018 09:04:39
1516140357 1516140382     25	 46.154	# 17 January 2018 09:05:57 17 January 2018 09:06:22
1516143340 1516143377     37	  1.217	# 17 January 2018 09:55:40 17 January 2018 09:56:17
1516184510 1516184578     68	  0.088	# 17 January 2018 21:21:50 17 January 2018 21:22:58
1516184704 1516184751     47	 28.571	# 17 January 2018 21:25:04 17 January 2018 21:25:51
1516186309 1516186376     67	  2.311	# 17 January 2018 21:51:49 17 January 2018 21:52:56
1516186455 1516186512     57	 45.570	# 17 January 2018 21:54:15 17 January 2018 21:55:12
1516187382 1516187428     46	  4.138	# 17 January 2018 22:09:42 17 January 2018 22:10:28
1516189200 1516189303    103	  2.032	# 17 January 2018 22:40:00 17 January 2018 22:41:43
1516189456 1516189492     36	 23.529	# 17 January 2018 22:44:16 17 January 2018 22:44:52
1516189560 1516189617     57	 52.941	# 17 January 2018 22:46:00 17 January 2018 22:46:57
1516567378 1516567446     68	  0.010	# 22 January 2018 07:42:58 22 January 2018 07:44:06
1516567560 1516567617     57	 31.579	# 22 January 2018 07:46:00 22 January 2018 07:46:57
1516713821 1516717932   4111	  0.025	# 24 January 2018 00:23:41 24 January 2018 01:32:12
1516718378 1516718459     81	  8.072	# 24 January 2018 01:39:38 24 January 2018 01:40:59
1517113943 1517114786    843	  0.009	# 28 January 2018 15:32:23 28 January 2018 15:46:26

Total 292 outages, total time 634441 seconds (7 days, 08:14:01)
Average time between outages:	434685 seconds (5 days, 00:44:45)
Average duration:		2172 seconds (00:36:12)
Availability:			99.50%
      

“Badness” is an attempt to quantify the effect. It's the reciprocal of the number of seconds per hour that the link was up between failures (i.e. 3600 / uptime).

And here is the summary information for the past 10 days with a less than 100% record:

Date        Outages   Duration  Availability    Date
                      (seconds)
1504015200	  1	    71	 99.92%	# 30 August 2017
1504274400	  1	   200	 99.77%	#  2 September 2017
1507726800	  1	  2078	 97.59%	# 12 October 2017
1512565200	  2	  4213	 95.12%	#  7 December 2017
1513515600	  1	  1354	 98.43%	# 18 December 2017
1513602000	  1	   114	 99.87%	# 19 December 2017
1516107600	 15	   797	 99.08%	# 17 January 2018
1516539600	  2	   125	 99.86%	# 22 January 2018
1516712400	  2	  4192	 95.15%	# 24 January 2018
1517058000	  1	   843	 99.02%	# 28 January 2018
      

The dates in the left columns are in UNIX time_t format to ease further processing. I also have lists of all individual outages, or summaries per day.


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