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Page 1ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0
ADANETS WP2:QoS management
ADANETS Workshop 29/01/2003
L.Maknavicius
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 2
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 3
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 4
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 5
Overall management view
CustomerCustomer
ServiceinventoryService
inventorySLS DefinitionSLS Definition
ProvisioningProvisioning
ServiceTemplate/
Offer
ServiceTemplate/
Offer
AssuranceAssuranceAssurance config.
Actions, indicators
Policy ServerPolicy ServerMediation / TranslationMediation / Translation
SLA
SLA
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 6
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 7
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 8
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 9
QoS mgmt Framework (2):network provisioning
Network
SLS
Service Mgt
Traffic Forecast
NE
Scenario 1:NetworkProvisioning
ElementManager
DataCollector
Network InventoryTopology / State
NetworkConfig Mgt
NetworkOptimization
ProblemDetection
Traffic Engineering
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 10
QoS mgmt Framework (3):service provisioning
Network
Network InventoryTopology / State
SLS
Service Mgt
Traffic Forecast
NetworkConfig Mgt
NE
Scenario 2:ServiceProvisioning
ElementManager
NetworkOptimization
ProblemDetection
Traffic Engineering
DataCollector
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 11
QoS mgmt Framework (4):TE (assurance & netw optimizn)
Network
SLS
Service Mgt
Traffic Forecast
NE
Scenario 3:TrafficEngineering
ElementManager
DataCollector
Network InventoryTopology / State
NetworkConfig Mgt
NetworkOptimization
ProblemDetection
Traffic Engineering
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 12
QoS Framework instantiationfor service provisioning
BGP/MPLS Network
SLS
Service Mgt
Proxy
NE
DataCollector
SML
NM
LE
ML
Network InventoryTopology / State
PolicyManager
NetworkOptimization
ProblemDetection
Traffic Engineering
PolicyRepository
PolicyServer
PEP
Support Functions
Connection Mgr
Bandwidth Mgr
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 13
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
ADANETS Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 14
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 Workshop Jan 29, 2003 ADANETS-WP2-Alcatel-SLIDE/29012003-V1.0 Page 15
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: Linas.Maknavicius@alcatel.fr