enhanced network control plane architectures supporting cloud computing applications: gmpls+/pce+...
TRANSCRIPT
Enhanced Network Control Plane architectures Enhanced Network Control Plane architectures supporting Cloud Computing applications:supporting Cloud Computing applications:
GMPLS+/PCE+GMPLS+/PCE+Nicola Ciulli
Project Steering Committee
On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15th2010
3On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
NCP problem statement
• Grids, cloud computing and SOAs at large rely 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
4On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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.
5On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010 5
GEYSERS reference model
IT: storage, computing
optical infrastructure
Infrastructure Providers
App/Service Providers
Network Infrastructure IT InfrastructureIT Infrastructure
Logical Infrastructure Composition Layer
Application
Application Interface
Application
Resources
Roles
IT: storage, computing
(virtual)Network Operators
GMPLS+/PCE+
Network Control Plane (Extended ASON/GMPLS and PCE Control Plane)
GMPLS+/PCE+
6On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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. resource types, 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
7On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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
8On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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)
9On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
Reference deployment scenario
x-NNI
I-NNI
I-NNI
GMPLS+/PCE+Region/Area
x-NNII-NNI
GMPLS+/PCE+Region/Area
PCE+
PCE+
PCE+
PCE+ protocol
NIPS UNI
NIPS UNI
NIPS UNI
GMPLS+/PCE+Region/Area
GMPLS+/PCE+ NCP(outer core)
StandardGMPLS/PCE NCP
(inner core)
x-NNI
I-NNI
PCE
PCE+ protocol
PCE+ protocol
10On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
NCP major innovations
Application dynamics and granularity at the
user-network interface(NIPS) Extended
communication paradigms • assisted unicast• restricted anycast• full anycast
New service composition dynamics
at the SOA layerBoD services planned +
provisioned by the NCP but optionally hocked to the NMS
decision flow
Scheduled BoD services handled by
the NCP in a distributed/federated
way
Cross-layer service monitoring and
escalation of recovery procedures
Energy-efficient network + IT resource
routing and provisioning
GEYSERSenhanced NCP
AAAfor net+IT provisioning
services
11On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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
12On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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?
13On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
Expected impacts on SDOs
e.g. by contributing to • NSI-WG• Tentative ISOD WG
14On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
Thank youAny questions?
Nicola Ciulli, n.ciulli<at>nextworks.it
14
15On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
Energy-data awareness and crunching
16On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
Starting point of work: prototyping & testingStarting 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
16
17On-demand Infrastructure Services Provisioning Workshop, OGF 28, Munich, Mar 15 th 2010
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