Service Level Specifications, Cornerstone to e2e QoS · the QoS guarantees offered by the...
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Yves T ’Joens, Washington 25-26 October page n° 1 » All rights reserved © 1999, Alcatel, Paris. Service Level Specifications, Cornerstone to E2E QoS across the Internet ? Yves T’Joens Project Manager Network Strategy Group
Transcript of Service Level Specifications, Cornerstone to e2e QoS · the QoS guarantees offered by the...
Yves T ’Joens, Washington 25-26 October page n° 1 » All rights reserved © 1999, Alcatel, Paris.
Service Level Specifications, Cornerstone to E2E QoS across the Internet ?
Yves T’JoensProject Manager
Network Strategy Group
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 2 »
Outline
IP Research in Europe
The TEQUILA look on QoS over the Internet
Putting this in the perspective of ongoing standardization
Service Level Specification, Cornerstone to e2e QoS ?
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 3 »
IP research in Europe
5 the Framework Program : 1998 - 2002
Thematic Programmes
Quality of life and management of living resources
User-friendly information society (IST)
Competitive and sustainable growth (GROWTH)
Energy, environment and sustainable development (EESD)
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 4 »
IP research in Europe
Systems and services for the citizen
New methods of work and electronic commerce
Multimedia content and tools
Essential technologies and infrastructures
IST-TEQUILA http://www.ist-tequila.org
IST-AQUILA http://www-st.inf.tu-dresden.de/aquila/
IST-CADENUS http://www.teltec.dcu.ie/mailman/listinfo/cadenus
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 5 »
The TEQUILA system
Host ApplicationRSVP Path/Resv TEQUILA system
EnterpriseNetwork
VPN/LL Manager
H.323 GK
Host Application
SLS SubscriptionSLS invocation
SIP server/proxy
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 6 »
TEQUILA subsystems
SLS SubscriptionSLS invocation
SLS management
Traffic Engineering
Monitoring
Policy Management
Data Plane
VPN/LL Manager
H.323 GK
Host Application
TEQUILA system
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 7 »
SLS Management Subsystem
SLS Subscription
SLS Invocation
Traffic Forecast
SLS Subscription
SLS invocation
Data Transmission
Customer/ ISP
40
4080
45
RAP WG (COPS/Diffserv PIB)
Diffserv WGIntserv WG / ISSLL WG
?? WG
“Management Plane”
“Control Plane”
TrafficConditioning“Data Plane”
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Traffic Engineering SubsystemIP based or MPLS based
Network Dimensioning
Dynamic Route
Management
Dynamic Resource
Management
Routing
40
<10<
<30<
Diffserv WG / MIBRAP WG / PIB
NetworkPlanning
MPLS WGTE WGOSPF / ISIS WGIDR WG (BGP)
PHB configuration
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 9 »
Data Plane Subsystem
RAP WG (COPS/Diffserv PIB)
DiffservPHB
configuration
TrafficConditioning
Diffserv WG
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Monitoring Subsystem
IPPM WGRTFM WG
NetworkMonitoring
Node Monitoring
SLS Monitoring
NE
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 11 »
Policy Subsystem
PolicyManagement
Tool
PolicyConsumer
PolicyRepository
PolicyTargetPOLICY WG Service provisioning policies
Network operation policies
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 12 »
Service Level Specifications Introduction
SLS - what is it all about ?
SLS describes the traffic characteristics of IP services & the QoS guarantees offered by the (DiffServ) network
SLS contains technical parameters and is part of the SLA
Motivation for an SLS standardised formalism
Automated & Dynamic management & negotiation ofSLSs
Automation of SLS Management (ISPs) between customer-ISP and ISP-ISP
Open interfaces in the multi-vendor / provider Internet environment
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 13 »
SLS template (2)
Scope: The geographical region over which the QoS is to be enforced
pipe, hose & funnel models
Flow Id: stream of IP packets sharing at least one common characteristic
provides info for packet classification (BA or MF classification)
Traffic Conformance Testing
The set of actions allowing to identify in- & out-of-profile packets of the IP stream identified by Flow Id
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SLS template (3)
Excess Treatment:
dropping, shaping, (re)-marking of excess packets
Performance Guarantees
These are the service guarantees that the network offers to the customer (SLS)
for the packet stream identified by Flow Id, over the geographical region defined by Scope”
Four (measurable) parametersdelay | optional quantilejitter | optional quantilepacket lossthroughput
All rights reserved © 1999, Alcatel, Paris.Yves T ’Joens, Washington 25-26 october n° 15 »
Conclusions
Standardisation of SLS template is a necessity (basic parameters, leave room for differentiation…)
Today a joint effort between EC funded projects (known as the NGN forum) is looking into this
IETF I-D : draft-tequila-diffserv-sls-00.txt (July 2000)
Seeking support for starting this activity at the level of the IETF (maybe BoF session at the IETF San Diego meeting)
Further information : contact [email protected]
