1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.
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Transcript of 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.
![Page 1: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/1.jpg)
1QoS monitoring and SLS auditing
QoS monitoring and SLS auditing
TEQUILA, AmsterdamJanuary 25th, 2001
Victor Reijs
![Page 2: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/2.jpg)
2QoS monitoring and SLS auditing
Outline
• Application QoS demands…• Monitoring network QoS…• SLS auditing...
![Page 3: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/3.jpg)
3QoS monitoring and SLS auditing
QoS where?
SLS auditing...
ApplicationQoS demands...
Monitoring network QoS...
![Page 4: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/4.jpg)
4QoS monitoring and SLS auditing
Application QoS demands
• Some QoS demands are known• To be studied QoS demands...
![Page 5: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/5.jpg)
5QoS monitoring and SLS auditing
To be studied QoS demands
• Determine compelling applications:ftp, H.323, streaming, MPEG-x, computational grid
• Literature study...• Simulate impaired network...• Determine perceived quality of application...
![Page 6: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/6.jpg)
6QoS monitoring and SLS auditing
Literature study
• http://www.heanet.ie/heanet/projects/nat_infrastruct/perceived.html
• Some prilimarly results…
![Page 7: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/7.jpg)
7QoS monitoring and SLS auditing
Some prilimarly results: TCP
![Page 8: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/8.jpg)
8QoS monitoring and SLS auditing
Some prilimarly results: MPEG-2
![Page 9: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/9.jpg)
9QoS monitoring and SLS auditing
Some prilimarly results: Y.1541
![Page 10: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/10.jpg)
10QoS monitoring and SLS auditing
Simulate impaired network• Determine micro-flow QoS parameters
– transfer delay and delay variation– loss rate and error rate (like out-of-order)– available bandwidth
• Change behaviour within micro-flow (AF)• Change of network load
– unloaded– over provisioned (?)– loaded
![Page 11: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/11.jpg)
11QoS monitoring and SLS auditing
Determine perceived quality of application
• n-dimensional space• Providing input for debugging:
– application behaviour– network behaviour
![Page 12: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/12.jpg)
12QoS monitoring and SLS auditing
QoS where?
SLS auditing...
ApplicationQoS demands...
Monitoring network QoS...
![Page 13: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/13.jpg)
13QoS monitoring and SLS auditing
Monitoring network QoS
• Methods in principle not part of this activity• Must come out of other TF-NGN activities:
unloaded, OvNet, diff. Serv., int. Serv.• Monitoring PHB parameters
average traffic, loss per queue, queue length, etc.• Monitoring network
routing, topology, etc.
![Page 14: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/14.jpg)
14QoS monitoring and SLS auditing
QoS where?
SLS auditing...
ApplicationQoS demands...
Monitoring network QoS...
![Page 15: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/15.jpg)
15QoS monitoring and SLS auditing
SLS auditing
• Defining environments…• Gathering reference models…• Freezing definitions…• Inventorying/evaluating tools...• Deliverables...
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16QoS monitoring and SLS auditing
Defining environments
• Micro flow environmentlooking at applications, end-to-end
• Aggregated environmentPHB
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17QoS monitoring and SLS auditing
Gathering reference models
• Existing SLS’s• TEQUILA• IETF (IPPM)• Internet2 e2e performance• ...
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18QoS monitoring and SLS auditing
Freezing definitions
• Freeze reference model and its options• What to measure:
– micro-flow...– aggregated...
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19QoS monitoring and SLS auditing
Micro flow
• Path and peering points– delay transfer (one way???) and delay
variation– loss rate and error rate– available/peak bandwidth– ...
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20QoS monitoring and SLS auditing
Aggregated
• Per hop– average load/available bandwidth– loss rate per queue/class– queue length per class
• Path– routing
![Page 21: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/21.jpg)
21QoS monitoring and SLS auditing
Inventorying/evaluating tools
• ping• traceroute• route flapping• ttcp/netperf/tcpblast• chariot• RIPE TTM/Surveyor• NetFlow• ...
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22QoS monitoring and SLS auditing
QoS where?
SLS auditing...
ApplicationQoS demands...
Monitoring network QoS...
![Page 23: 1 QoS monitoring and SLS auditing TEQUILA, Amsterdam January 25 th, 2001 Victor Reijs.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b857f8b9ab0599bc497/html5/thumbnails/23.jpg)
23QoS monitoring and SLS auditing
Issues
• Relation with other groups/activities• Aggregated/micro-flow
measurements/SLS• Granularity/scale needed for SLS auditing• Small/large time scale measurements
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24QoS monitoring and SLS auditing
More information
• http://www.heanet.ie/heanet/projects/nat_infrastruct/perceived.html