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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

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. 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)

1577077136 1577077217     81	  0.014	# 23 December 2019 15:58:56 23 December 2019 16:00:17
1578754381 1578754394     13	  0.002	# 12 January 2020 01:53:01 12 January 2020 01:53:14
1578922890 1578923596    706	  0.021	# 14 January 2020 00:41:30 14 January 2020 00:53:16
1579738170 1579744829   6659	  0.004	# 23 January 2020 11:09:30 23 January 2020 13:00:29
1581289482 1581295105   5623	  0.002	# 10 February 2020 10:04:42 10 February 2020 11:38:25
1581296046 1581296137     91	  3.826	# 10 February 2020 11:54:06 10 February 2020 11:55:37
1581296324 1581296370     46	 19.251	# 10 February 2020 11:58:44 10 February 2020 11:59:30
1581308099 1581308169     70	  0.307	# 10 February 2020 15:14:59 10 February 2020 15:16:09
1581373860 1581376462   2602	  0.055	# 11 February 2020 09:31:00 11 February 2020 10:14:22
1581377852 1581396391  18539	  2.590	# 11 February 2020 10:37:32 11 February 2020 15:46:31
1581460752 1581483562  22810	  0.056	# 12 February 2020 09:39:12 12 February 2020 15:59:22
1581485620 1581487885   2265	  1.749	# 12 February 2020 16:33:40 12 February 2020 17:11:25
1581571169 1581573935   2766	  0.043	# 13 February 2020 16:19:29 13 February 2020 17:05:35
1583378421 1583378915    494	  0.002	#  5 March 2020 14:20:21  5 March 2020 14:28:35
1583379343 1583380577   1234	  8.411	#  5 March 2020 14:35:43  5 March 2020 14:56:17
1583380701 1583380725     24	 29.032	#  5 March 2020 14:58:21  5 March 2020 14:58:45

Summary
Total 438 outages, total time 1040298 seconds (12 days, 00:58:18)
Longest outage:			192150 seconds (2 days, 05:22:30)
   Start:			21 February 2015 04:36:54
   End:				23 February 2015 09:59:24
Average time between outages:	443227 seconds (5 days, 03:07:07)
Average duration:		2375 seconds (00:39:35)
Availability:			99.46%
      

“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:

Timestamp      Outages  Duration  Availability    Date
                        (seconds)
1576760400	  1	   384	 99.56%	# 20 December 2019
1577019600	  1	    81	 99.91%	# 23 December 2019
1578747600	  1	    13	 99.98%	# 12 January 2020
1578920400	  1	   706	 99.18%	# 14 January 2020
1579698000	  1	  6659	 92.29%	# 23 January 2020
1581253200	  4	  5830	 93.25%	# 10 February 2020
1581339600	  2	 21141	 75.53%	# 11 February 2020
1581426000	  2	 25075	 70.98%	# 12 February 2020
1581512400	  1	  2766	 96.80%	# 13 February 2020
1583326800	  3	  1752	 97.97%	#  5 March 2020
      

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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