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  • We discussed the many uses of PingER data including:
    • the impact on network performance of events such as earthquakes, tsunamis, civil uprisings, the world cup, 
    • exploring the data semantically e.g. byLinked Open Data
    • Correlations with other indices such as economics, human development.
  • We also discussed:
    •  development of new low cost, low power PingER Measurement Agents (MA) utilizing Android devices.
    • the possibilities of developing/utilizing a decentralized logging/analysis/presentation structure using BlockChain. This would reduce the dependence on SLAC.

Umar sent Shadi two URLs on how to download and install the MA software and possible interests for students.

Action Items from previous meeting

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  • Amity MA is unreliable so using it for a case study does not appear fruitful. Les is working with Amity to try and understand this unreliability (emails 10/6/2018), they say "There is an internet problem we are taking care of it and will get back soon".  Meeting planned soon

Thailand (No update 8/9/2018, No update 9/6/2018, No update 11/19/2018)

Charnsak is looking at a host in Champasak University, Chan Parsa province in Laos as a potential site for a PingER MA. Charnsak just got approved to make contact with the Champasak University. He expects to set up the MA in the next 4-5 months (say towards end 2018). It also depends on the partner university, and there may be a lot of paperwork.

UNIMAS (No update 8/9/2018, no update 9/6/2018, no update 10/7/2018, no update 11/

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19/2018)

Need to add Umar Kalim to http://pinger.unimas.my/pinger/contact.php. From the 7/5/2018 meeting: Johari can't ssh into the server so he will go to it on Monday.  He will also upload the new UNIMAS PingER website next week.

Sent reminder emails 8/6/2018. 9/3/2018.

UUM (No update 8/9/2018, No update 9/6/2018, 11/

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19/2018)

Les has sent Adib updates to Figs 3, 4, 5 to extend out to 2018. This is for the paper  Socio-economic Development Indices and Their Reflection on Internet Performance in ASEAN Countries

Adib will submit the paper to World Development: https://www.journals.elsevier.com/world-development

NUST: (No update 11/19/2018)

Wajahat proposes to get a list of the new Universities in Pakistan and contact them encouraging them to participate in PingER and set up MA. They have made a list of new university sites, communications networks, Labs in different regions of Pakistan (especially the remote regions) and will make contact. 

  • The list of new universities is ready. Just need resources to engage them. 
  • Les pointed out that several Pakistani MAs have been disabled, i.e. the data is no longer gathered from them.  From Wajahat 10/6/2018. "We are working on the nodes you have mentioned. The intern is new and trying hard to understand the programs. Hopefully within a week he will start repairing the nodes."
    • Wajahat will provide a list of working or potentially working Pakistani MAs to Les, and if they are not enabled, Les will enter or re-enable the gathering of data from these MAs.

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  • 121.52.146.180 (kohat.edu.pk) down since Nov 22/2017. Wajahat recommends continuing at least until the new student is up to speed (3/8/2018). No data available 3/24/2018. Disabled 10/3/2018. Wajahat emailed 10/12/2018.
    • pinger.kohat.edu.pk status is that the concerned person is on leave and the other person doesn't know any status of the system at site. 
  • cae.seecs.edu.pk last time we were able to gather any data was February 27th. Disabled 8/19/2018. Wajahat emailed 10/12/2018.For several months we were unable to gather data from pinger.isra.edu.pk starting 3/6/2018, also it did not ping. Then it started working as of September 2nd, 2018 and we gathered data for 3 days. Failed again starting on Sept 5th. At this time (Sept 6th) it was pinging, however, all pings failed (i.e. no response after 31 pings). Now (10/14/2018) it is not pingable.
    • cae.seecs.edu.pk status is that the system at node is totally out of order. The system isn't in working condition. The concerned person there requires full technical support on how the linux can be installed and used. He knows windows only. He also requires all the support on making the system run the pinger scripts etc.
  • Wajahat now has a permanent staff engineer so that person can be trained on how to manage MAs and possibly improve the installation process. How is it going? What Pakistani hosts are now working, do I need to re-enable any hosts. The only hosts we try to gather data from are seen in http://www-iepm.slac.stanford.edu/monitoring/checkdata/.  They are:

    • comsatsswl.seecs.edu, maggie1.seecs.edu.pk, maggie2.seecs.edu.pk, monitor.seecs.edu.pk,
      pinger.isra.edu.pk (no data since 5th Sept 2018, so it is a candidate to Disable),
      pinger.nwfpuet.edu.pk, pinger.vu.edu.pk

UAF/GHZU (Updated

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11/

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19/2018)

Saqib's future at GZHU will be much clearer after November, current contract expires February 2019. 

We were unable to hear Saqib. 

  • Gathering data is no longer working, is there some way to fix it?

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  • By text messages,

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  • Saqib indicated he is looking at getting the Beijing Measurement Agent working again.  He is trying to make the Beijing MA live again. However, he has little control over it as it

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  • is in the CERNET cloud.

After the meeting, Umar and Saqib experimented with using Zoom instead of Skype.

 

PingER at SLAC 

PingER IPV6 support

  Saqib commented that the call quality was significantly better than that of Skype. Umar could hear him clearly. Therefore, Umar suggests that we should schedule a Zoom call for our next meeting. He will make the arrangements of scheduling and hosting the call. 

  • The platform requires the installation of client software, which is similar to Skype. As with other conference call software, it allows us to share video and screencasts. (Umar promises that Zoom doesn't pay him to market their software (tongue))

 

PingER at SLAC  (Updated 11/19/2018)

PingER IPV6 support

  • Les cleaned up the Beacons and added some more hosts. Les cleaned up the Beacons and added some more hosts. Now have 161 Beacons in  156 different countries, all are working.
  • We now monitor 830 targets from SLAC this is an increase of ~100 in the last year and is the most monitored from SLAC ever.
  • We are monitoring 48 IPv6 nodes from SLAC.
  • There is a problem gathering data from  2001:da8:270:2018:f816:3eff:fef3:bd3 the Guangzhou IPv6 host in Beijing. 

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  • Why should we focus on minimum RTT instead of average RTT
  • Are the R plots generated using minRTT?
    • Averages and computed. Min RTT is available. Scripts need to be updated to use minRTT.
  • What is the breakdown of latency between endpoints?If there is a difference, is it because of the type or location of the source? What if the source of traffic was not SLAC?Is there a correlation with the distance between the endpoints?
  • Are the differences limited to a particular region? How do we determine/understand if traffic prioritization is implemented?Test in a controlled environment to avoid variables such as traffic prioritization, queuing delay due to cross traffic.Review the time series of latencies for both ICMP and TCP ping, instead of averages?
    • It may be that end hosts which are farther away have larger variances and thus the pronounced differences.
  • Is there a difference between IPv4 measurements vs IPv6.

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