Page 1 ADANETS Workshop Jan 29, 2003ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 ADANETS WP2: QoS...

ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0

ADANETS WP2:QoS management

ADANETS Workshop 29/01/2003

L.Maknavicius


QoS work scope

QoS in ADANETS: Optimal transport capacity of IP flows originating from

different applications Mainly IP core networks QoS parameters expressed through an SLA/SLS Service differentiation by per flow priority handling Three-fold solution set:

• Policy-based management for provisioning

• Pro-active assurance

• Multi-domain QoS negotiation


Prioritizing the Traffic Flows:example

Low Priority: Web Traffic, FTPLow Priority: Web Traffic, FTP

Medium Priority: E-mail, Transactional AppsMedium Priority: E-mail, Transactional Apps

High Priority: Critical Data ApplicationsHigh Priority: Critical Data Applications

Highest Priority: Voice and VideoHighest Priority: Voice and Video


From the contract to the network

EthernetIPATM/FREthernet

MPLS

queueingclassify meter

dropper

shaping

(re)markfilter

encrypt

authenticateauthorizeNAT

DNS DHCP

decrypt

firewall

PPP

User “Transparent”Network

Cloud

wants

IKE

access to

radius

routing

Application

Server

SLAQoSPerf.

SLA


Overall management view

CustomerCustomer

ServiceinventoryService

inventorySLS DefinitionSLS Definition

ProvisioningProvisioning

ServiceTemplate/

Offer

ServiceTemplate/

Offer

AssuranceAssuranceAssurance config.

Actions, indicators

Policy ServerPolicy ServerMediation / TranslationMediation / Translation

SLA

SLA


Relevant standards (1):QoS mechanisms overview

Horizontal QoS mechanisms (consistent techniques shared by all network nodes, such as signalling, priority labelling, …)

Vert

ical

QoS

mech

an

ism

s (

betw

een a

dja

cent

lavels

)

QoS over ATM QoS over optics(SDH) QoS over Ethernet

QoS over Frame Relay

MPLS

IntServ /RSVP DiffServ

Layer 2

Layer 3

Layer 4

Upperlayers

Bandwidth brokers

Application/system-related QoS: client/server response time,

data backup, srv performance, …

Layer 7

QoS

based

policy

mgmt

(Policy

framework,

COPS)

Trafficmgmt

Net-work

elements

QoS routing/CBR


Relevant standards (2):IETF

IntServ - per-micro flow resource reservation DiffServ – per class traffic prioritization MPLS - forwarding scheme TE – resource/performance optimization

CBR – route selection wrt objectives & constraints Policy-based management

Policy Server

PDP Policy Repository

Policy mgmt tool

COPS

PEPs Models to represent

policy information: PCIM, PCIMe, QPIM, IPVPN


QoS mgmt Framework (1):overview

Network

SLS

Service Mgt

Traffic Forecast

ElementManager

NE

DataCollector

SML

NM

LE

ML

Network InventoryTopology / State

NetworkConfig Mgt

NetworkOptimization

ProblemDetection

Traffic Engineering


QoS mgmt Framework (2):network provisioning

Network

SLS

Service Mgt

Traffic Forecast

NE

Scenario 1:NetworkProvisioning

ElementManager

DataCollector


NetworkConfig Mgt

NetworkOptimization

ProblemDetection

Traffic Engineering


QoS mgmt Framework (3):service provisioning

Network


SLS

Service Mgt

Traffic Forecast

NetworkConfig Mgt

NE

Scenario 2:ServiceProvisioning

ElementManager

NetworkOptimization

ProblemDetection

Traffic Engineering

DataCollector


QoS mgmt Framework (4):TE (assurance & netw optimizn)

Network

SLS

Service Mgt

Traffic Forecast

NE

Scenario 3:TrafficEngineering

ElementManager

DataCollector


NetworkConfig Mgt

NetworkOptimization

ProblemDetection

Traffic Engineering


QoS Framework instantiationfor service provisioning

BGP/MPLS Network

SLS

Service Mgt

Proxy

NE

DataCollector

SML

NM

LE

ML


PolicyManager

NetworkOptimization

ProblemDetection

Traffic Engineering

PolicyRepository

PolicyServer

PEP

Support Functions

Connection Mgr

Bandwidth Mgr


Assurance part:proactive SLS management

SLA violation detection

Pro-active SLS violation

management

Network Capacity Planning

Traffic Engineering

Measures, alarms, performances, trends

SLA SLA SLA

SLA

Network fault

SLA violation

Network Planning commands (traffic forecasts)

TE commands Rules , ...

Root Cause Analysis

Models, …

Alarm filtering & correlation

Check SLA commitments

+ classify violations

Determine correction actions


Multi-domain QOS negotiation:protocol- & PBM-based approach

SLS1 SLS2

network provider

customer SLS PEP SLS PDP

COPS-SLS

desired QoS

accept/reject/proposal


ADANETS WP2 – QoS mgmt: status & conclusions

Achieved: Comprehensive QoS management Framework Pro-active SLS violation management

Task list: D2.1 “Analysis of standards on QoS provisioning on IP

networks & proposition of QoS mgmt framework” – available (public)

D2.2 “Assurance of SLS & QoS commitments” (restricted) D2.3 “Defining specification for QoS negotiation over

multiple network domains” - available (public) D2.4 “Policy server demo” – scheduled for 2003

TBD: QoS end-to-end vision Other Frwk instantiations wrt demo technical choices

Requests: [email protected]

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