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This page is under construction, and a lot doesn't make much sense.

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:

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 for outages. I have a program that evaluates the outage information and produces detailed outage information. Here's the information on the past 10 outages, along with the overall statistics:

Start time End time  Duration   Badness        from                    to
                     (seconds)

1493643566 1493645316   1750	  0.009	#  1 May 2017 22:59:26  1 May 2017 23:28:36
1493872618 1493872868    250	  0.016	#  4 May 2017 14:36:58  4 May 2017 14:41:08
1496130088 1496130501    413	  0.002	# 30 May 2017 17:41:28 30 May 2017 17:48:21
1496156996 1496157056     60	  0.136	# 31 May 2017 01:09:56 31 May 2017 01:10:56
1496159659 1496159805    146	  1.383	# 31 May 2017 01:54:19 31 May 2017 01:56:45
1496845289 1496845853    564	  0.005	#  8 June 2017 00:21:29  8 June 2017 00:30:53
1500556617 1500556620      3	  0.001	# 20 July 2017 23:16:57 20 July 2017 23:17:00
1504018035 1504018106     71	  0.001	# 30 August 2017 00:47:15 30 August 2017 00:48:26
1504359138 1504359338    200	  0.011	#  2 September 2017 23:32:18  2 September 2017 23:35:38
1507811122 1507813256   2134	  0.001	# 12 October 2017 23:25:22 13 October 2017 00:00:56

Total 269 outages, total time -118248439 seconds (-32846:-47:-19)
Average time between outages:	0 seconds (00:00:00)
Average duration:		-439585 seconds (-122:-6:-25)
Availability:			-695579008.00%
      

“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)
1493215200	  1	    24	 99.97%	# 27 April 2017
1493560800	  1	  1750	 97.97%	#  1 May 2017
1493820000	  1	   250	 99.71%	#  4 May 2017
1496066400	  1	   413	 99.52%	# 30 May 2017
1496152800	  2	   206	 99.76%	# 31 May 2017
1496844000	  1	   564	 99.35%	#  8 June 2017
1500472800	  1	     3	100.00%	# 20 July 2017
1504015200	  1	    71	 99.92%	# 30 August 2017
1504274400	  1	   200	 99.77%	#  2 September 2017
1507726800	  1	  2078	 97.59%	# 12 October 2017
      

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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