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Enhanced Network Control Plane architectures supporting Cloud Computing applications: GMPLS+/PCE+. Nicola Ciulli Project Steering Committee On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010. NCP problem statement.

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enhanced network control plane architectures supporting cloud computing applications gmpls pce

Enhanced Network Control Plane architectures supporting Cloud Computing applications:GMPLS+/PCE+

Nicola Ciulli

Project Steering Committee

On-demand Infrastructure Services Provisioning Workshop,

OGF 28, Munich, Mar 15th2010

ncp problem statement
NCP problem statement
  • Grids, cloud computing and SOAs at largerely on a vital commodity: the network
    • An ever-increasing number of distributed [super-]computing applications
      • Highly-demanding requirements for dynamicity and flexibility in Net + IT resource control (e.g. automated scaling up/down)
    • …but their network service(s) still treated as “always-on”
      • Application layer unable to exploit the automatic control potentialities of the current optical (and not-optical) network technologies
      • IT resources dynamics completely uncorrelated from the network ones
        • Common trend to over-provision network services

 inefficient resource utilization in the network, above all in case of fault recovery

ncp problem statement cont d
NCP problem statement (cont’d)
  • [DEMAND] More and more massive utilisation of these Net+IT services by end-users
  • [OFFER] A rapid migration from telecommunication networks to global communication infrastructures
    • Network infrastructure
    • Computing/storage elements (IT)
    • Software and tools to control, monitor and manage the Net+IT services
  • Often virtually composed on top of incumbent providers
  • … and with a “revolution” in actors’ roles and responsibilities along the value-chain
    • Infrastructure providers, network operators, virtual network operators,
    • Service/Content providers, Over the Top (OTTs), etc.
geysers reference model
GEYSERS reference model

Roles

App/Service Providers

Application

Application

Application Interface

Network Control Plane (Extended ASON/GMPLS and PCE Control Plane)

(virtual)

Network

Operators

GMPLS+/PCE+

GMPLS+/PCE+

Logical Infrastructure Composition Layer

Infrastructure Providers

Network Infrastructure

IT Infrastructure

IT Infrastructure

Resources

IT: storage, computing

IT: storage, computing

optical infrastructure

4

nips network it provisioning service
NIPS: Network+IT Provisioning Service
  • Beyond a UNI, towards a App-to-Net i/f
  • Generalized semantics to describe
    • the functional characteristics of both IT sites and NEs (exported from LICL)
      • i.e. resourcetypes, capabilities and availabilities
        • E.g. sites, attached services, capabilities and capacities of network, computing and storage elements, etc.
    • also the non-functional service characteristics
      • Workflow descriptions
      • Interaction properties
      • Service Level Agreements
      • Pricing/charging models
      • etc.

a service that allows the provisioning of network and IT resources in a single-step, through a set of seamlessly integrated procedures

planned features 1
Planned features [1]
  • Provide a single reference point for the Application layer (Network+IT Provisioning Service interface – NIPS)
    • [downward] e2e dynamic (advance) reservations with differentiated service guarantees (QoS but also resiliency) on a per-user/service basis
    • [upward] Reporting SLA fulfilment for subsequent workflow adjustments
  • Capability of dynamic e2e resource composition of Net + IT resources
    • “One-step” Net+IT resource reservation
    • Scheduled/advance reservation (various degrees from fully distributed to centralized)
    • Trusted mechanisms for accessing resources
    • Coordinated recovery strategies for an overall service resiliency
planned features 2
Planned features [2]
  • Supporting new connection paradigms, i.e. beyond p2p
    • assisted unicast (i.e. network quotations about performance and prices of <src, dst> pairs)
    • restricted anycast (i.e. with a set of equivalent dst in which NCP+ will pick the best one)
    • full anycast (i.e. dst choice totally delegated to NCP)
  • Coordinated service provisioning and maintenance through the LICL
    • Dynamic provisioning, monitoring and recovery functions
    • Logical infrastructure re-planning based on TE considerations, network & SLA fulfilment benchmarking
  • Backward compatibility and interoperability with std GMPLS and PCE
    • ASON/GMPLS (by ITU-T and IETF CCAMP WG)
    • PCE (by IETF PCE WG)
    • UNI and E-NNI interfaces (by OIF + possible influences from OGF NSI WG)
reference deployment scenario
Reference deployment scenario

PCE+ protocol

PCE+ protocol

PCE

PCE+

x-NNI

NIPS UNI

PCE+

I-NNI

x-NNI

NIPS UNI

I-NNI

I-NNI

GMPLS+/PCE+

Region/Area

GMPLS+/PCE+

Region/Area

PCE+ protocol

Standard

GMPLS/PCE NCP

(inner core)

PCE+

x-NNI

I-NNI

GMPLS+/PCE+ NCP

(outer core)

GMPLS+/PCE+

Region/Area

NIPS UNI

ncp major innovations
NCP major innovations

AAA

for net+IT provisioning services

GEYSERS

enhanced NCP

Application dynamics and granularity at the user-network interface

(NIPS)

  • Extended communication paradigms
  • assisted unicast
  • restricted anycast
  • full anycast

New service composition dynamicsat the SOA layer

BoD services planned + provisioned by the NCP but optionally hocked to the NMSdecision flow

Cross-layer service monitoringand escalation of recoveryprocedures

Scheduled BoDservices handled by the NCP in a distributed/federated way

Energy-efficient network + IT resource routing and provisioning

main work items for gmpls pce
Main work items for GMPLS+/PCE+
  • @Routing plane [GMPLS+/PCE+]
    • Protocol extensions for Net+IT resource advertisements
    • NIPS route computation
    • Procedures for inter-domain NIPS routing
  • @Signalling plane [GMPLS+]
    • Protocol extensions for Net+IT resource reservations
    • Procedures for seamless NIPS signalling
    • Procedures for coordinated inter-layer recovery and escalations
    • NIPS interface specification
      • To let end-user apps or the brokering/scheduling entities on the Enterprise Service Bus (ESB) stimulate the GMPLS+ NCP
reference specs and architectures
Reference specs and architectures
  • ASON/GMPLS core specs
    • ITU-T SG15 work on ASON and Transport Ethernet
    • OIF for ASON Network Interfaces (UNI, E-NNI sig+rout.)
    • IEFT RFCs & I-Ds for
    • signalling (G.RSVP-TE)
    • routing (G.OSPF-TE)
    • recovery mechanisms
    • support for multiple switching technologies (MRN/MLN)
    • PCE architecture and inter-PCE comms
  • OASIS SOA application requirements and framework
  • OGF: NSI, OCCI?
expected impacts on sdos
Expected impacts on SDOs
  • e.g. by contributing to
  • NSI-WG
  • Tentative ISOD WG
slide13

Thank you

Any questions?

Nicola Ciulli, n.ciulli<at>nextworks.it

13

starting point of work prototyping testing
Starting point of work: prototyping & testing
  • A number of existing platforms to be extended/used
    • For GMPLS+/PCE+ (protocol stacks in Linux controllers)
    • For std GMPLS/PCE (protocol stacks embedded in optical nodes)
  • … and a solid R&D test-beds background from the team
    • Telco SME: Nextworks (NCP WP Lead)
    • Telco manufacturers: ADVA, Alcatel-Lucent Italy
    • Pan-European Carriers: Interoute
    • Service Providers: SAP AG
    • Telecom Operators & NREN: Telefonica I+D, Polish PTT, PSNC
    • Universities and Research Centers: i2CAT, Univ. Essex, Univ. Amsterdam, Athens Information Technology, Tech. Univ. Braunschweig, IBBT

15

planned delivery of the major results
Planned delivery of the major results
  • [Q1-2011] GMPLS+/PCE+ architecture (high/low level)
  • [Q1-2012] First prototypes for testbed integration and validations
  • [Q3-2012] Final prototype releases
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