enabling 5g network slicing over heterogeneous optical ... · optical metro network optical core...

Enabling5Gnetworkslicingoverheterogeneousopticalnetworks

ONDM2017Workshop

RamonCasellas,RicardVilalta,RicardoMartínez,andRaulMuñoz- CTTC/CERCA

CommunicationNetworksDivision,Av.CarlFriedrichGauss,7,08860Castelldefels,Spain

[email protected] ©CTTC2017Allrightsreserved

ONDM2017Workshop- Opticalnetworksfordatacentresinthe5Gera 1rosshaul5G C

the integrated fronthaul/backhaul

v SlicingMacroscopicConcept:partition(slice)asinglephysicalinfrastructureintomultiplevirtualXoptimizedaccordingtospecificservices,businessmodels,etc.q X?Networks?Infrastructures?Functions?q Networkvirtualization?VirtualPrivateNetwork?ETSINFVNetworkService?

§ Allcanbeseenasaparticularcases.

v Definitionsq NextGenerationMobileNetworks(NGMN)WhitePaperq 3GPPTR28.801V1.0.0(2017-03)Studyonmanagementandorchestrationofnetwork

slicingfornextgenerationnetwork(Release14)§ asetofnetworkfunctionsandtheresourcesforthesenetworkfunctionswhicharearranged

andconfigured,formingacompletelogicalnetworktomeetcertainnetworkcharacteristics.§ MaybecomposedofsubnetsofPhysicalNetworkFunctionsand/orVirtualizedNetwork

Functions.§ PhysicalNetworkFunctionsandVirtualizedNetworkFunctionsmaybelongtooneormore

networkslicesubnet(s).

q Researchpapers,Whitepapers…

Alogicalconstructencompassingmultipleinterconnectedfunctions,customizedandoptimizedforaservice(set)orvertical.

Introduction:slicingasanemergingrequirementfor5G

ONDM2017Workshop- Opticalnetworksfordatacentresinthe5Gera 2

5GPPPWhitepaper(MWC2016)


Optical Core NetworkOptical Metro Network

Core Cloud

Infrastructure Layer

Optical Access Network

Satellite Network

RAN and wireless backhaul

Edge Cloud

Network Function Layer

Multi-service Control Layer

Business Function Layer

Edge Cloud

Business Service Layer

Network Function

Repository

Vertical #1 Services(e.g., Factory of the Future)

Mobile broadband Services Vertical #2 Services (e.g,, Automotive)

Service #1

Service #2

Service #3

Service #1

Service #2

Service #3

Service #1

Service #2

Service #3

Net

wor

k-ce

ntric

ser

vice

sVe

rtic

al-c

entri

c se

rvic

es

Northbo

undInterfa

ces

Southb

ound

Interfaces

Vertical #1 Function

Repository


Repository


Repository

OpticalWireless SatelliteAbstract resources:

Source: 5GPPP White paper MWC2016: https://5g-ppp.eu/wp-content/uploads/2016/02/BROCHURE_5PPP_BAT2_PL.pdf

v Goalà Todynamicallyprovidemultiple,highlyflexible,end-to-enddedicatednetworkslices(consideringvirtualnetwork,cloudandfunctionsresources)overthesamephysicalinfrastructureinordertodeliververtical-specificrequirements

q Control,ManagementandOrchestrationsystemsforslicelife-cyclemanagement.

v Slicescanbecreatedandoperatedbythe5Gnetworkoperatororenablenewbusinessmodels,e.g.“Slice-as-a-Service”.

v Whataboutmulti-tenancy?

q Relatedtotheconceptofownershipand/oruse.

q NetworkSlicingisanenablerforflexiblemulti-tenancy.

q Ultimatelyempoweringtenanttocontrolallocatedslice(recursively)

SlicingasaService


v Definesanewgenerationoftransportnetworksfor5G,integratingbothfronthaulandbackhaulsegmentsintoacommontransportinfrastructure.

v ConvergedFronthaulandBackhaulundercommonSDN/NFV-basedcontrol,capableofsupportingnew5GRANarchitectures(vRAN)andperformancerequirements.q XCF– CommonFramecapableoftransportingthemixtureofvariousFronthaulandbackhaultraffic

q XFE– ForwardingElementforforwardingtheCrosshaultrafficintheXCFformatundertheXCIcontrol

q XPU– ProcessingUnitforexecutingvirtualizednetworkfunctionsand/orcentralizedaccessprotocolfunctions

q XCI– ControlInfrastructurethatisSDN-basedandNFV-enabledforexecutingtheorchestrator’sresourceallocationdecisions

5G-Crosshaulproject


XFE XFE

XPU

XPU

XFE

XFE

XFE

XFE

XFE XFE

XPUXPU

Virtual Infrastructure 2

Tenant Y SDN-based Control

Virtual Infrastructure 1

5G-Crosshaul Physical Resource

XPU Virtual Infrastructure 3

Tenant Z SDN-based Control Tenant X

SDN-based Control

Network Servicesoffed by Tenant ZVNF1

VNF2

VNF3

Network service 2

VNF1 VNF2 VNF3

Network service 1

Multi-Tena

ncy

5G-CrosshaulSlicing

v WhatisNetworksFunctionVirtualization(NFV)?q Insimpletermsà a deploymentmodelandconceptaroundtheideaofreplacingdedicated

networkappliances— suchasroutersandfirewalls— withsoftware(guests)runningonhostsq Reliesontheconceptofhost“virtualization”

§ E.g.Hypervisors

v ETSI/NFVIarchitectureq NFVI:NFVInfrastructure

§ UsedtosupporttheinstantiationofVirtualMachines(VMs)q VIM:VirtualizedInfrastructureManager

§ Managesandprovidesaccesstostorage,networkandcomputerresources(NFVI)q MANO:ManagementandOrchestration

§ DealswiththeorchestrationofVirtualizedNetworkFunctionsandhowtodeploythem(withinthesocalledNetworkServices)

v Benefitsq Lowercosts:replacingdedicatedapplianceswithsharedservers.Efficientresourceusageq Reduceoperationalcostswithfewerappliancestodeployandmaintainq Supporton-demandpay-as-yougodeploymentmodelsq EnableInnovationbymakingiteasiertodevelopnetworkfunctionsq Deployvirtualizedsolutionsoncommercial,off-the-shelf(COTS)hardware

Apotentiallysuitableframeworkforslicing:ETSINFV



8

VM11

VirtualSoftSwitch

HypervisorDomain

NFVInode

ComputeDomain

VM21

NFVInode

NetworkDomain

NFVI-PoP NFVI-PoP

NFVInode

NetworkElement

NetworkElement

NetworkElement

NIC

Agent

Agent

NetworkElement

CPU/MEM

VIM

Or-Vi Or-WiNFV-Orchestrator

VIM/WIM VIM

Or-Vi

NFVIdomain NFVIdomain

HypervisorControl

NetworkControl

ComputeControl

NetworkControl

HypervisorControl

NetworkControl

ComputeControl

ONDM2017Workshop- Opticalnetworksfordatacentresinthe5Gera


9

VM11

VirtualSoftSwitch

HypervisorDomain

NFVInode

ComputeDomain

VM21

NFVInode

NetworkDomain

NFVI-PoP NFVI-PoP

NFVInode

NetworkElement

NetworkElement

NetworkElement

NIC

Agent

Agent

NetworkElement

CPU/MEM

VIM

Or-Vi Or-WiNFV-Orchestrator

VIM/WIM VIM

Or-Vi

NFVIdomain NFVIdomain

HypervisorControl

NetworkControl

ComputeControl

NetworkControl

HypervisorControl

NetworkControl

ComputeControl


Underspecified :focusedtoprovision“paths”betweenVNFsinVNF-FG

Notadaptedfor“virtualinfrastructures”usecases

“Toomuchabstracted”…

Veryrigid.

NoteasytointegrateopticalnetworkcontrolfocusedonL2/L3management

(e.g OpenStackNeutronML2)

Mainfocusisthe“NetworkService”doesnotcoverallusecases.

Multi Tenant Application (MTA)

VirtualInfrastructureAllocation/Modification/DeallocationAPI

VirtualInfrastructureControlAPI(Limitedform)

Tenant VI operation

VirtualInfrastructureXCI-basedControlAPI(Enablesrecursion)

Tenant Applications

Operator or Tenant

VI allocation

5G CrosshaulMANO (XCI)

(a) (b) (c)VIdescription(datamodel)

ETSINSAllocation/Modification/DeallocationAPI

Operator or Tenant

NS allocation

(d) NSDescriptorVNFDescriptorsVNF-FGDescriptor.

Tenant VI operation (recursion)

NFV orchestrator

VNF Manager(

s)

Virtual Infrastructure

Manager (VIM)

SDN ctrl

Crosshaul Forwarding

Element (XFE)

Crosshaul Forwarding

Element (XFE)

CrosshaulForwarding

Element (XFE)

Control PlaneDataPlane

Hardware

NFVI / VNFs Virtualization layer

AF

5G CrosshaulMANO(XCI)

Non-Crosshaul interfaceCrosshaul interface

Computing ctrlStorage ctrl Plugin 1

Plugin 2

…

Plugin n

Plugin 1

Plugin 2

…

Plugin n

Plugin 1

Plugin 2

…Plugin n

Crosshaul Processor

Unit (XPU)

Crosshaul Processor

Unit (XPU)

Crosshaul Processor

Unit (XPU)

Legacy Transport

(λ/time switch, BBU, …)

Legacy Transport

(λ/time switch, BBU, …)

Non-XFE/XPU Crosshaul

Nodes(switch, BBU, mmwave…)

PHY / Link layerPHY / Link layer

Southbound Interface (SBI)

Northbound Interface (NBI)

Crosshaul Common Frame (XCF) InterfaceNon-XCF Frame Interface

VNF Manager(

s)

VNF Manager(

s)

5G-CrosshaulSlicing:ExtendingtheNFVframework

X. Li, R. Casellas, G. Landi, A. de la Oliva, X. Costa-Pérez, A. Garcia-Saavedra,T. Deiß, L. Cominardi, R. Vilalta, “5G-Crosshaul Network Slicing: Enabling Multi-Tenancy in Mobile Transport Networks”, accepted for publication IEEE Communications Magazine, 2017

EnsuresupportforMulti-Tenancy

Offer“virtualinfrastructure”services(lower-level)

RealisticT-SDN/NFVintegration

11

ETSINFVHypervisorDomain

NFVInode

ComputeDomain

ETSINFVNetworkDomain

NFVI-PoP

NetworkElement

NIC

Agent

AgentCPU/MEM

VIM

HypervisorControl

NetworkControl

ComputeControl

NFVInode

NFVI-PoP

NIC

Agent

AgentCPU/MEM

NetworkOrchestrator

ChildController

ChildController

AgentNetworkElement

Agent

SDNNetworkController,

AS-PCE,…

NetworkElement

PCCNetworkElement

Mgmt

PCEP

Netconf,…


NetworkControl

SDNOrchestrator

“BeyondNFVO”OfferSlicingservicesinadditiontoETSI/NFVNS.Nativelysupportnetworkvirtualizationandmulti-tenancy.

XX

X X

X

Network Topology Abstraction

Uniform Resource identificationMulti-domain Abstracted Topology and Connection database

Cooperative routing, spectrum assignment and coordinated path provisioning

Overarching control – coordination and orchestration functions

Control Adaptation

XX

X X

X


Control Adaptation

XX

X X

X


Control Adaptation

Control Domain 1Local TED and Connection DB

Control Domain 2Local TED and Connection DB

Control Domain NLocal TED and Connection DB

NetworkOrchestrationandOverarchingControl


v Hybridmodels,veryheterogeneousintermsofprotocolsandinterfaces

GenericNetworkOrchestration

13

CONTROLPLANE

NetworkElementNetwork

ElementNetworkElementNetwork

Element


ElementNetworkElement

LayerLParent

Controller



NetworkElement



Element

LayerLChild

Controller

LayerLChild

Controller

LayerHController

Domain(Multi-Layer)Orchestrator

DataPlaneLayerHDataPlaneLayerL



Element

HIERARCHYLEVELABSTRACTIO

N

DomainOrchestrator

LayerHDataPlaneLink

LayerLdomain1 LayerLdomain2

DATAPLANE

Multi-LayerOrchestration

HierarchicalControl

PeerModel

Domain(NetworkSegment,Administrative,…)Domain

Vendor1Controller

Vendor2Controller

Sub-Domains(VendorSegmentation…)



Domain(Multi-Layer)Orchestrator

NetworkElement


ElementGMPLSController

OpenFlow,NetconfREST,…

AS-PCE

PCEP

Domain

OFC2017– SC448Monday,20March2017– IntroductiontoControlandManagementofOpticalNetworks

SlicingoverMulti-domainflexi-gridnetworks:ACTN


ROADM

GMPLS Controller

CCIROADM

CCI

PCC PCC

OSPF-TE

RSVP-TE

MDSCMDTED

MDLSPDB

Provisioning

Underlying physical network infrastructure –Data & Control Plane (Domain 1)

Topology Management

PCEP

Network HypervisorAbstraction and Virtualization Tenant Control of

Allocated slices

CNC(Tenant 1)

Management &Orchestration

Tenant / SLiceAllocation REST API

Virtualization and abstraction

Tenant /Slice

Manager

ApplicationsApplicationsClient/Tenant

Applications

CNC / SC(Tenant 2)

ApplicationsApplicationsClient/Tenant

Applications

TopologyMonitoring REST API

Stackable

CNC-2.1

CNC-2.2

PCEP Active Stateful Capabilities for provisioning and Link State for

Topologyabstractionandmanagement

TEDLSPDB

Provisioning Topology Management


PNC

MDSC

TEDLSPDB

Provisioning Topology Management


PNC

Underlying physical network infrastructure –Data & Control Plane (Domain 2)

GMPLS Controller

ROADM

GMPLS Controller

CCIROADM

CCI

PCC PCC

OSPF-TE

RSVP-TEGMPLS

Controller

SlicingoverMulti-domainflexi-gridnetworks:experimental


Examplewith2tenants/slices.


Example:dynamicinstantiationofCNC


OpenStackKeystone/NovaRESTAPI

AS-PCETenantRESTAPI

Tenant1

BGP-LSorPCEPLS

TenantManagerGUI172.16.102.254(10.1.6.202)

172.16.102.101(10.1.6.101) 172.16.102.114(10.1.6.114)

Provisioning&TopologyRESTAPI

AS-PCE172.16.102.101(10.1.6.101

)

hi-PCE10.1.6.228hi-PCE

10.1.6.227

SliceTED

SliceLSPDB

PCEP

OSPF-TERSVP-TE

12

3

Tenant1App/NMS

4

10.1.6.226

TEDLSPDB

hi-PCETenant1

NovaControllerComputenodeNetworkHypervisor

lo-PCE

TEDLSPDB

172.16.102.101(10.1.6.101)

10.1.6.20110.1.6.207

v Slicingasanemergingrequirementfor5Gnetworks;asliceisalogicalconstructinvolvingfunctionsandtheirinterconnection,tailoredforservicesandverticals.TheconceptsomehowgeneralizesETSINetworkservices,virtualnetworks,VPNs,etc.

v TheETSINFVframework,allowingtheinstantiationofNetworkServices,providesaplatformtosupportnetworkslicing,complementedwitha“SliceManager”or“Multi-TenancyApplication”

q Doesnotfullycoverallusecases,speciallywhenpartitioningthephysicalnetwork,allowingultimateSDNcontroloverthevirtualinfrastructure

v IntegratingopticaltransportnetworksandgeneralizingtheslicingconceptrequiresafinerjointorchestrationofnetworkandITresources,withimprovedvisibilityoftheopticalnetworkanditscontrolandmanagement.

v Inparticular,weconsideredtheactualpartitioningofamulti-domainflexi-gridopticalnetworkandhowtheIETFACTNandhierarchicalActive-StatefulPCEsupporttheconcept.

Conclusions


Thankyou!Questions?

[email protected]://networks.cttc.es/ons

This work has been partially funded by the European Commission through the H2020-ICT-2014-2 project 5G-Crosshaul (671598) and the Spanish Ministry

MINECO project DESTELLO (TEC2015-69256-R).


enabling 5g network slicing over heterogeneous optical ... · optical metro network optical core...

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