1. Broadband Quality of Service in Sri Lanka Test Results

2. Advertised Upload Speed
Download
Speed
Advertised Upload Speed
India
Airtel
512 kbps
BSNL - Business
2 Mbps
256 kbps
BSNL - Home
Hathway
Sri Lanka
Dialog
SLT - Business
SLT - Home
128 kbps
Singapore
StarHub*
1 Mbps
Packages tested
* Partial testing

3. Test Results Throughput (Download speed/Upload speed)
Business Packages performance in
ISP domain
Local domain
International level
Business vs. Home performance
Sri Lanka vs. India/Singapore performance
Delay metrics (RTT/jitter)
Loss metrics (Packet Loss)

4. Test Results Throughput - Download speed

5. Download speed (Business Packages): Relatively healthy in ISP domain…
2 Mbps
> 75%
ISP

6. Dialog (2M/512k) SLT (2M/512k) ISP Download speed (Business Packages):
… and does not significantly vary among different days
(be it week days or weekend)
Dialog (2M/512k)
SLT (2M/512k)
ISP

7. Download speed (Business Packages):
…poor in Local domain
2 Mbps
> 75%
Local

8. SLT (2M/512k) Dialog (2M/512k) Local
Download speed (Business Packages): …also variations are relatively higher among three days (interconnection issues?)
SLT (2M/512k)
Dialog (2M/512k)
Local

9. Download speed (Business Packages):
…even poorer when accessing International sites
2 Mbps
> 75%
Int’l

10. SLT (2M/512k) Dialog (2M/512k) Int’l
Download speed (Business Packages):
… that does not significantly vary across days
SLT (2M/512k)
Dialog (2M/512k)
Int’l

11. Download speed (SLT Business vs. SLT Home packages):
…in % terms, home is better than business

12. Download speed (SLT Business vs
Download speed (SLT Business vs. SLT Home packages): …and comparable in reaching international sites

13. Download speed: India and Sri Lanka (ISP Domain):
Sri Lanka performs slightly better
> 75%
ISP

14. Download speed: India and Sri Lanka (Local Domain): India performs better
> 75%
Local

15. Download speed: India and Sri Lanka (accessing International servers): India looks good
> 75%
Int’l

16. Download speed Sri Lanka and Singapore (accessing International servers): Singapore wins
> 75%
Int’l

17. Test Results Throughput - Upload speeds

18. Upload speed (Business packages): Somewhat healthy in ISP domain
512 kbps
> 75%
ISP

19. Upload speed (Business packages): …a bit down at Local Domain
512 kbps
> 75%
Local

20. Upload speed (Business packages):
…and poor in accessing International sites
512 kbps
> 75%
Int’l

21. Upload speed (SLT Business vs
Upload speed (SLT Business vs. SLT Home packages): …here too in %, home is better than business, but not in actual speeds
(aprox 100 kpbs)
(aprox 200 kpbs)

22. Upload speed Sri Lanka and Singapore (accessing International sites): Singapore wins
> 75%
Int’l

23. Test Results Jitter and Packet Loss

24. Jitter : Sometimes not enough quality for video/high quality audio (<+10ms) but satisfactory for other apps

25. Packet Loss : Most of the times, but not always, within acceptable limits (5%)
ISP –Week Day
Local –Week Day
INT –Week Day
ISP –Weekend
Local –Weekend
INT –Weekend

26. Where is the bottleneck?

27. Accessing www.lankacom.net through SLT (2M/512k)
170 ms
65 ms
25 ms
10 ms
Local
NB: All IP addresses are within SL (

28. Accessing www.yahoo.com through SLT (2M/512k)
170 ms
65 ms
25 ms
10 ms
Int’l
NB: Upto 5th hop IP addresses are within SL (

29. Using RTT/latency in broadband QoS regulation
Local Network Latency (LNL): Round Trip Time (RTT) taken to access a national or site hosted within the country
Requirement: LNL < 85ms for 95% of the peak time
International Network Latency (INL) : Round Trip Time (RTT) to the first US entry point.
Requirement: INL < 300ms for 95% of the peak time

30. International Network Latency
Where do
we stand?
ISP1 – Out:
Exit from local ISP
FEP: First Entry point to USA
Package
Local Network Latency
International Network Latency
Requirement
Achivement
Passed?
Value
Airtel (512k/512k)
85 ms
8 ms 
300 ms
217  
BSNL (2M/256k)
191 ms  
295
SLT (2M/512k)
11 ms
258

31. Few points to ponder
Do we always get what is promised, especially when downloading from International sites?
Are these trends transitional or long-term?
Are Home packages better value for money than Business packages?
Can we be complacent because the situation is not too different in India?
Should we demand better QoS for Games/video?
Should we adopt Singapore standards or more stringent ones?

32. Thank You! wattegama@lirne.net www.lirneasia.net
Thanks to LIRNEasia team, Prof. Timothy Gonsalves and team, Ranga Kamaladasa, Sriganesh Lokanathan, Sanjana Hattotuwa, Sanath Siriwardena and all who contributed ideas/opinions in online discussions at LIRNEasia blog.