presentation by chanuka wattegama

8/14/2019 Presentation by Chanuka Wattegama

1/32

Broadband Quality of Service

in Sri Lanka

Test Results


2/32

Advertised

Download

Speed

Advertised

Upload

SpeedIndia Airtel 512 kbps 512 kbps

BSNL - Business 2 Mbps 256 kbps

BSNL - Home 2 Mbps 256 kbps

Hathway 256 kbps 256 kbps

Sri Lanka Dialog 2 Mbps 512 kbps

SLT - Business 2 Mbps 512 kbps

SLT - Home 512 kbps 128 kbps

Singapore StarHub* 1 Mbps 256 kbps

Packages tested

* Partial testing


3/32

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)


4/32

Test Results

Throughput - Downloadspeed


5/32

2 Mbps

Download speed (Business Packages):

Relatively healthy in ISP domain

> 75%

ISP


6/32

SLT (2M/512k) Dialog (2M/512k)


and does not significantly vary among different days

(be it week days or weekend)

ISP


7/32

2 Mbps

Download speed (Business Packages):poor in Local domain

> 75%

Local


8/32


Download speed (Business Packages): also variations are

relatively higher among three days (interconnection issues?)

Local


9/32

2 Mbps

Download speed (Business Packages):even poorer when accessing International sites

> 75%

Intl


10/32



that does not significantly vary across days

Intl


11/32

Download speed (SLT Business vs. SLT Home

packages):

in % terms, home is better than business


12/32

Download speed (SLT Business vs. SLT Home

packages): and comparable in reaching international

sites


13/32

Download speed: Indiaand Sri Lanka (ISP Domain):

Sri Lanka performs slightly better

ISP

> 75%


14/32

Download speed: Indiaand Sri Lanka (Local Domain):

India performs better

Local

> 75%


15/32

Download speed: Indiaand Sri Lanka (accessing

International servers): India looks good

Intl

> 75%


16/32

Download speed Sri Lanka andSingapore (accessing

International servers): Singapore wins

Intl

> 75%


17/32

Test Results

Throughput - Uploadspeeds


18/32

512 kbps

Upload speed (Business packages):

Somewhat healthy in ISP domain

ISP

> 75%


19/32

512 kbps


a bit down at Local Domain

Local

> 75%


20/32

512 kbps


and poor in accessing International sites

Intl

> 75%


21/32

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)


22/32

Upload speed Sri Lanka andSingapore (accessing

International sites): Singapore wins

Intl

> 75%


23/32

Test Results

Jitter and Packet Loss


24/32

Jitter : Sometimes not enough quality for video/high

quality audio (


25/32

ISP Week Day Local Week Day INT Week Day

ISP Weekend Local Weekend INT Weekend

Packet Loss : Most of the times, but not always, within

acceptable limits (5%)


26/32

Where is the bottleneck?


27/32

Accessing www.lankacom.net through SLT (2M/512k)

NB: All IP addresses are within SL (www.whois.net)

65 ms

25 ms

170 ms

10 ms

Local
http://www.lankacom.net/http://www.lankacom.net/


28/32

Accessing www.yahoo.com through SLT (2M/512k)

NB: Upto 5th hop IP addresses are within SL (www.whois.net)

65 ms

25 ms

170 ms

10 ms

Intl
http://www.yahoo.com/http://www.yahoo.com/


29/32

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


30/32

Where do

we stand?

PackageLocal Network Latency International Network Latency

Requirement Achivement Passed? Requirement Value Passed?

Airtel (512k/512k) 85 ms 8 ms 300 ms 217 BSNL (2M/256k) 85 ms 191 ms 300 ms 295 SLT (2M/512k) 85 ms 11 ms 300 ms 258

ISP1 Out:

Exit from local

ISP

FEP: First Entry

point to USA


31/32

Few points to ponder

o Do we always get what is promised, especially whendownloading from International sites?

o Are these trends transitional or long-term?

o

Are Home packages better value for money thanBusiness packages?

o Can we be complacent because the situation is not too

different in India?

o Should we demand better QoS for Games/video?

o Should we adopt Singapore standards or more

stringent ones?


32/32

Thank You!

[email protected]

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
mailto:[email protected]://www.lirneasia.net/http://www.lirneasia.net/mailto:[email protected]

presentation by chanuka wattegama

Documents