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Deployment
In 2010, following a series of workshops and site visits, the team at SEECS/NUST and SLAC has worked with Pakistan’s Education and Research Network (PERN) and Pakistani Universities to put together an end-to-end (E2E) network monitoring infrastructure for PERN connected higher education sites. So far they By the end of 2010 they had have installed the PingER monitoring tools and started gathering data at 18 sites in Pakistan. In addition they are working on a further 8 monitoring sites. This includes 4 sites (SEECS/NIIT, COMSATS, PERN and NCP/Quaid-i-Azam) which have been in place for a longer time. Over the last year the In addition they are working on a further 8 monitoring sites. Over 2010 the number of monitoring host – remote host pairs (both in Pakistan) has increased from about 30 to over 220.
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The growth in the number of monitors and host pairs being monitored over 2010, is seen below (spreadsheet):
Measurements
Using PingER, the monitoring hosts ping each remote host with 10 pings every 30 minutes. From this data we are able to measure minimum and average Round Trip Times (RTT), jitter, loss, unreachabilty and derive throughput and Mean Opinion Score (MOS). The data is gathered from the monitoring sites on a daily basis by archiving and analysis sites at SEECS (this was also set up in the last 18 months), SLAC and FNAL.
RTT and Losses for 2010
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| Various percentiles for the Inter Packet Delay Variation (IPDV) or jitter between Pakistani monitoring hosts and remote host pairs. The line shows the number of pairs with measurements contributing to the results | The blue dots are the median losses seen between all pairs of monitoring and remote hosts for each month. The error bars show the extent of the 25 and 75 percentiles. The red dots are the number of pairs contributing to the packet loss measurements. |
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