Privonet VPN service - Cybertec

Privonet VPN service is supported on Cybertec routers from FW 1.7.2.0.

As you can see at the bottom of the page.

Upload a VPN configuration file -> Privonet configuration file

Time to test the stability of the connection and able to retrieve data over relatively longer time period. Two tests been executed:

• Test-1: 4 hours
• Test-2: 12 hours

I did not use ICMP (normal ping), but instead used TCP. This is the package tcp-ping and you can read up on advantage of not using ICMP as well.

To demonstrate remote data acquisition, I used following timing. Poll every 2 minutes. In most cases I would consider this quite aggressive for industrial application, but I wanted to capture potential VPN drop outs and how that would affect data collection.

Results

Here are results for 12 hours test.

Cybertec 2255

#--------------------------------------#
Processing file: ./10.0.26.10- 2015-10-14 22:37:12.259-ping_data.json
Number of records: 359
Number of error pings: 3
Average ping time over records: 300.175 ms
Records:
- 
  run_no:    236
  timeStamp: 2015-10-14 18:30:02.140
- 
  run_no:    237
  timeStamp: 2015-10-14 18:32:02.138
- 
  run_no:    238
  timeStamp: 2015-10-14 18:33:33.877
#--------------------------------------#

Results indicates time period of approximately 8 continuous minutes (the worst case scenario), where unit was not reachable.

That represents 0.9% of total time, where unit has not been available.

12hours = 720min / 8min = 90 / 100 = 0.9%

Note: Check average ping time.

Here is a screenshot from plotting the results.

Cybertec 2455

#--------------------------------------#
Processing file: ./10.0.9.10- 2015-10-14 22:36:57.319-ping_data.json
Number of records: 359
Number of error pings: 0
Average ping time over records: 138.883 ms
#--------------------------------------#

With the LTE unit (unit has been connected the whole time to LTE) are results are great 100% online.

Note: Check average ping time.

Average ping time on LTE network (138.883 ms) is not even 50% of average on 3G network (300.175 ms).

Here is a screenshot from plotting the results.