A testbed of terabit IP routers running MPLS over DWDM · A testbed of terabit IP routers running...

A testbed of terabit IP routers running MPLS over DWDM

IST 1999-20675

ATRIUM

Wim Barbaixhttp://www.alcatel.be/atrium

AtriumAtrium-Dusseldorf.ppt pp0101

The Atrium Project

Duration: 30 months:January 2001 - June 2003.

Objectives of the Project:Develop an advanced testbed for experiments and validation of an Advanced Terabit Router (ATR) : the A7770 RCPResearch, Design and experiment with a set of traffic management algorithms and protocols

Allow the ATR to operate in a Diffserv capable , MPLS based AS. Interconnect the AS with other AS with similar capabilities

Test the final version of the ATR with very high demanding applications


Atrium partners & roles

Partner M ajor Focal PointsAlcatel Equipm ent (ATR routers)

InstallationTesting

CoordinationDem onstration

FTR&D – France TelecomM obistar

N etwork installation and m aintenanceTesting

ResearchDem onstration

Universite de Liege InstallationResearchTesting

Dem onstration

Faculte Universitaires N otreDam e de la Paix N am ur

ResearchTesting

Dem onstration


Structure of the Atrium Project

Installation and

Integrationof the Network

Demonstration withreal applications

Test interoperabilityof MPLS in a

diffserv AS

Research intra domain

TE

Research inter domain

TE

Exploitation & dissemination

Project Management


Workpackage 0

Project management and Coordination

Coordination of external Liaison, exploitation and dissemination

Coordinate visibility at international levels

Decide on agreements with third parties

Dissemination and exploitations of results

Interconnectivity to third party testbeds and experiments

M14 : give access to 4 non atrium projects

M30 : access to minimum 15 projects


Workpackage 0 : accomodation of other projects

Methods to accommodate other projects

Collocate equipment with the ATR

Interconnect the Atrium project to other infrastructure

M8 : VTHD : experimental network of FT R&D

M12 - M16 : Connection to Belnet - Renater

M16 : Connect to Geant network of Dante.

M24 : others

Coordination Committee


Workpackage 1Installation and integration of the Network

Deploy 4 PoPs with the A7770 Routing Core Platform

Antwerp, Liege and Paris (2)

Connect the A7770 RCPs to local network elements

test the IP forwarding capabilities

test the MPLS forwarding capabilities

Interconnect the PoPs with OC-48 links

Isolated AS.

Validate the label edge router capabilities

Connect with GE ports to host other experiments

Connect the testbed to external existing networks


Workpackage 1 : phases

Phase 2 : Connected autonomous system ( M12 )

Alcatel

7770

ULg

7770

AS #2 : VTHDNon-7770

Paris

7770


OC12 POS

Proposal for Antwerp Local configuration: layout

7770 RCPRouting Core Platform

Smartbits

OC48 POS

Juniper M40 Router

10/100 BaseT

OC48 POS

Cisco 7204

GE

OC3 POS

GE

Router testerPR 5200

Cisco 7204

OC3 POS

Atrium

OC48 POS

Linux PC W S Ultra sparc


Workpackage 1 : phases

Phase 3 : Connected autonomous system

Alcatel

7770

ULg

7770

AS #2 : VTHD

Paris7770

7770

AS #x : Renater / Geant

AS #y : Belnet


Workpackage 0 : Cooperation with IST projects

MoicaneMultiple Organisation Interconnection for Collaborative AdvancedNetwork Experiments ( wireless, DSL, LAN, ATM )Request for an IP QOS backbone from late 2001 to end 2002Request for interconnectivity for their “islands”

Polish Optical Network

MPLS/QOS setup

QOS measurements

Member of Optimist


Workpackage 0 : Dante

Cooperation with Dante

Request to join a Test program

Collaboration with TF-NGN workgroup

Interconnect to Atrium.


The A7770 RCP

Scalable ArchitecturesSurvive exponential traffic growthwithout exponential investments

MultiserviceIP PlatformInnovative IP services

to generate new revenues

Service ManagementFlexible service deploymentat reduced operating costs

Carrier Grade OperationHigh customer satisfaction

to secure revenues

Optical IP InternetworkingCollapsing data and transport layer

to simplify network

Guaranteed Service Level

Agreements

Wire speed L2/L3 forwardingFlexible filtering, policing, ...OSPF, IS-IS, BGP, ...DiffServ+MPLS

Optical IP InternetworkingSONET, SDH, Ethernet, low cost155 Mb/s up to 10 Gb/s10 Gb/s per boardDynamic path allocationCo-ordinated multilayer restoration

Easy and Effective

Management

Global management solutionCross-domain managementSLA managementTraffic engineeringAutomation

High Performance and

Scalability

640 Gb/s switching capacityScalable switching technologyIP TrunkingDistributed forwardingForwarding table distribution

Non-Stop Networking

High density systemRedundant equipmentVariety of protection schemesHot restart of applicationsOn-line system upgrade


WP2 : Conformance , Interoperability and Performance testing

Definition of the testing tools and the systems to be tested

Stand-alone test : Conformance and Performance of the A7770 & interoperability with selected network components like Cisco 12000, Juniper M160

Intra-card OC48 ThroughputUni-directional stream

0

1000000

2000000

3000000

4000000

5000000

6000000

-100 100 300 500 700 900 1100 1300 1500

IP-PDU length (bytes)

Rat

e (p

ps)

MeasurementsTheory


WP2 : Traffic Engineering Platform tests

Off line Traffic Engineering

Discovery of network

Visualization of network

Routers and interfaces

capacity

LSPs

primary

backup LSPs


WP2 : Conformance , Interoperability and Performance testing

Isolated AS test : Performance of the 3 node network

Forwarding plane : throughput

Control plane : reactions on topology change

Connected network tests: Inter-domain conformance, interoperability and the performance of the 2 AS network

Validation of the network techniques developed by WP3/4


WP3 : Intra-domain Traffic Engineering

Scope of WP3:Propose and assess protocols and algorithms for intra-domain traffic engineering in IP/MPLS networks

Subproblems:QoS support on MPLS LSPsLSP computationLSP protection and restoration in case of failuresMulticast support

Approach: 1. Requirements, 2. Framework, 3. Design/simulation, 4. Prototyping/testing

Current status: Framework due end of Dec. 2001


WP3 : Quality of Service model

MPLS/Diffserv networksDiffserv = QoS per class, stateless coreDiffServ/MPLS based on E-LSPs

With several QoS classes per LSPMore scalable than L-LSPs: uses less labels, and allows to merge LSPs

MPLS label = path id, 3-bit EXP-field = QoS id (gives 8 DSCPs)8 DSCPs: e.g. EF, BE and 3 AF classes with 2 drop precedence levels each

EF has priority, all others get quantifiable relative QoSBandwidth reservation per E-LSP, with a subset reserved for EF

Design of an adaptive scheduler for quantifiable relative QoSDesign of suitable policing and buffer acceptance algorithms


WP3: LSP computation

Focus on traffic engineered E-LSPsDecentralized on-line algorithmsPath computation at ingress nodes

On-demand, per E-LSPAlgorithms under study

Based on unreserved and/or unused bandwidth on links

Needs to advertise link states in a scalable wayAlgorithms under study

Needs also per-hop admission control and backtrackingDue to the decentralized scheme

More global re-optimization if needed


WP3 : Protection and restoration

No a priori restrictionsLocal (link/node) recovery and edge-to-edge recovery consideredPrecomputed/pre-established and on demand backup LSPs considered

Performance requirementsSpeed of repairQuality of repair: losses, delay variations, reorderings

Scalability requirementsAggregation of back-up LSPs

QoS protection


WP3 : Multicast support

Preliminary issuesSuccess of SSM (Source-specific multicast)Comparison of the cost of multicast mechanisms compared to unicastMulticast transition scheme

Traffic engineering for multicast trafficDynamic establishment of multicast traffic engineered LSPs

Link with unicast protocols for Reverse Path Forwarding

QoS support on multicast LSPsProtection/restoration of multicast LSPs


WP4 : Interdomain traffic engineering

ObjectivesDefine new protocols and mechanisms to support across interdomain boundaries

Quality of ServiceFast restoration and fault toleranceTraffic engineering

Work planAnalysis the interdomain traffic of several ISPs to better understand its characteristicsPropose extensions to existing protocols and define need protocols and mechanisms when neededEvaluate these protocols and mechanisms


WP4 : Analysis of interdomain traffic

Analysis of all the interdomain traffic received by two ISPs

Research ISP serving universitiesDialup ISPThird (larger) ISP is under study

Main findingsEven small ISPs send and receive packets from a large portion of the InternetMost traffic comes from sources located at a distance of 2-3 AS hops from the studied ISPTop 100 AS sends between 60% and 80% of all traffic received by studied ISPsVariability of the traffic could be a concern for TE


WP4 : New protocols and mechanisms

Two parallel activities are ongoing

Short term solution

Define extensions to existing routing (BGP) and signaling protocols (RSVP-TE) to deal with pecularities of interdomain

BGP extensions have been proposed within IETF

Longer term solution

Development of a new interdomain routing protocol to better support traffic engineering, QoS and fast restoration


WP5 : Demonstration and Experiments

Definition of tests to understand the behavior of a network model based on IETFs DiffServ model for QOS and MPLS traffic engineering

Experiments based on results of WP3 and WP4.

Identify and build

killer application and demonstration


WP5 : experiment


OC12 POSOC48 POS

Juniper M40 Router Paris


OC12 POS

Juniper M40 Router

Smartbits

OC48 POS

OC48 POS

EBN/M*

Antwerp


G MPLS@ OIF UNI

Next step 1 : Network Dynamic through Management

Any Transport network

Alcatel 1354, 1353Transport

Management

Alcatel 1355 BOND

7770

7670

7770 RCPSONET/SDH

TrafficManagement

AVA-TE

Alcatel 5620Data Network Management

AVA Traffic Engineering Cross-Domain TE (MPLS and Transport)

1355BOND

Bandwidth-on-demand application O-SLA for O-VPN supportG MPLS@ OIF UNI protocol

Other client’s applications


Next step 2: Dynamic Networks through Signalling & Routing

OXCs with G MPLS controller

Alcatel 1354Transport Management

Alcatel 1355 BOND

G MPLS@ U NI

G MPLS@ U NI

G MPLS@ N NI

TrafficManagementAVA-TE

Alcatel 5620Data Network Management

CrossConnects fully GMPLS enabled

G MPLS Control PlaneSupport overlay model UNI, NNIService Level Agreement

Router

Support overlay model UNI

7770

7670

A testbed of terabit IP routers running MPLS over DWDM · A testbed of terabit IP routers running...

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