Page History

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Intra Regional POP to POP Analysis

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• ISL HQ to FJWU unreachability is 12.09% in October however, ISL FJWU to ISL HQ unreachability in October is 0 %.  Similarly, it is seen that FJWU was unable to reach QAU in september for 74% of time however, QAU POP wasunable to reach FJWU 3.7% of time.
• HEC NOC to FJWU and QAU has different RTTs in forward and reverse direction.
• Karachi POP to POP RTT is same in forward and reverse directions however we see a difference in average RTT in Islamabad and Lahore region.

POP to NON POP Analysis

An aerial view of Average RTT of Pakistan shows that the RTTs for Peshawar region are high as compared to other regions.  Multan and Faisalabad POP nodes also show high RTT. Figure 3 shows the average RTTs from SEECS to other nodes in Pakistan with colors of line showing the average RTT for that link. Image Added
Figure 3: SEECS to Pakistan Average RTT
Mean Opinion Score (MOS ) is used as the measurement for VoIP. It is a good measure to know which links are good and which ones are bad. Within Pakistan MOS value for all of the links is above 4.1 (which is excellent for VOIP communication). In figure 4 it is seen that MOS (red markers) were not affected much by addition of new nodes (green line shows node pairs). MOS shows that, Pakistan to Pakistan VOIP communication should not be a problem. Image Added
Figure 4: Pakistan to Pakistan MOS with Node Pairs

POP to Non-POP Inter-region Analysis

We now examine the POP to Non-POP region performance in order to understand the inter region PERN performance, we chose one reliable node (least unreachable, generally POP node) in a region and try to see how non-POP nodes in other regions look from this node. We have divided all Pakistani nodes in 5 regions, Lahore, Islamabad, Karachi, Peshawar and Quetta. Following are the interesting findings:

1. UETTAXILA performs consistently bad in Islamabad region followed by HEC POP Islamabad node.
2. NEDUET remained unreachable in Sep, Oct and November.
3. IPDV from ISL to Jamshoro is very high (75ms) which results in bad throughput.
4. ISRA University improved its RTT from 65 ms in Sept to 31ms in November.
5. Kinnaird College was unreachable more than 70 % of times with high IPDV. On Nov 20^th there was a spike of Average RTT of 8029.49ms which increased the average RTT to 431ms for the month.
6. Lahore GCU POP node was also unreachable 45.46% and 32.33% in Oct and Nov respectively.
7. In Peshawar Region USTB, Kohat and CAE had high RTT. Kohat had high IPDV of 15ms every month. GIKI was unreachable all the times in Sept, Oct and Nov.
8. Karachi to Karachi and Peshawar to Peshawar average RTT is high (18ms), while for the rest of the regions it is below 1ms.
9. Peshawar region showed worst performance when accessed from any of the regions, including itself.
10. Quetta to Quetta links show low RTT.
11. Peshawar to Islamabad and to Lahore RTT is higher than Peshawar to Karachi and to Quetta.
12. Multan POP, Faisalabad POP and QUEST (Sindh) showed high RTTs.

NOTE: In the tables below, the values are colored while compared to the values of all the regions for the same metric. Color variation is from Red being bad values to Green being good values.