Versions Compared

Old Version 13

changes.mady.by.user Les Cottrell

Saved on

compared with

New Version 14

changes.mady.by.user Les Cottrell

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Les fowarded by email the information from Ibrahim to Renan following the meeting

UNIMAS

Johari is unable to attend this skype meeting. Dr. Adnan Shahid Khan who recently joined UNIMAS, will represent UNIMAS.  Adnan is coming up to speed. Adnan is on the pinger-my email list as of April 25, 2014. Adnan met yesterday with Johari. 

Johari says there is no progress on the following, the student may take up some of these issues after Ramadan:

...

Pinger 2 (Raspberry Pi) is at the data centre: Johari went to the data centre (8/19/2014) with Adnan. Managed to successfully troubleshoot and setup the pinger2 raspberry pi unit at the data centre. Seems to be running and collecting data. The host is pingable and one can ping from it. DHowever ping_data.pl gatherer is unable to find cgi-lib.

The tool to enable synchronizing Malaysian

...

sites: added request from Saqib to sort the sites by country. Also have added another page to view statistic of sites by country. Have completed Troubleshoot and solve issues with form when inserting and updating record. The new page is available from the following page (two links on top of the table)                http://pinger.unimas.my/pinger/sites.php

Traceroute server: Status unsolved. But talk to the network administrator at the centre about this issues and he suggested to talk to the security manager to check whether the firewall is blocking the icmp packer from the traceroute command (to do list)

...

The traceroute server at http://pinger2.unimas.my/cgi-bin/traceroute.pl  has the same problem as before. They know (sort of) the problem but haven't got the chance to rectify it (mapping NAT address, needs to be added). There is no progress 12/4/2013, 1/8/2013, 1.22.2014, 2/5/2014, 3/26/2014, 4/8/2014, 4/23/2014, 6/4/2014. Now that the historical traceroutes are working for UM (see below) there is an extra incentive to get the reverse traceroute working at UTM and UNIMAS

Custom iso: He can get as far as the boot screen, but is unable to get to the desktop. No progress 2/5/2014, 4/23/2014, 6/4/2014 They will start work on it next week.

Johari has created a shell script to automate the installation of pinger package in Ubuntu/Fedora/Centos Linux distro.  The finalized installation script for pinger software for CentOS/Fedora based distribution is available from the following url (past the step by step tutorial): http://pinger.unimas.my/pinger/install-tutorial.php. Kashif assisted in testing the script.Johari has a research student who finalized a proposal in order to officially apply for his masters.  He will start in February. He is currently working on threshold/anomaly detection, and will extend to correlating performance over multiple routes. He will share the proposal with Les and others April. No progress 6/4/2014.

Research: one student currently doing master by research on pinger project. Progress is a bit slow since the student lacks sound technical and programming skill to implement potential solution. Also will supervise another Advanced Project (Master by coursework) this coming sep 2014. Planning to investigate whether two pinger monitoring host has any differences in term of data collection (pinger and pinger2 nodes in UNIMAS

UTM 

Saqib has talked to MYREN they say the routers at hops 5 and 6 in the traceroute from UM to UNIMAS are both at UM and the long delay between them is due to congestion. I am skeptical since hops 6-12 have similar RTT and 12 is near Kuching. I suggest Saqib run mtr for a day or more from UM to UNIMAS see if there is any day night variation in RTT. If min RTT gets down to <2 ms, then the MYREN guy is right. If it is ~ 50ms  and persists for several days then it really does not look like congestion (which should vary day night as the number of users changes). In that case then it really appears hop 6 is physically close to hop 12 since they have the same min RTT. Taken together with the email from UM I would be very suspicious of the MYREN statement.

...