Distributed multi-tenant cloud/fog and heterogeneous SDN/NFV - - PowerPoint PPT Presentation

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Distributed multi-tenant cloud/fog and heterogeneous SDN/NFV - - PowerPoint PPT Presentation

Dec 04, 2022 514 likes •680 views

Distributed multi-tenant cloud/fog and heterogeneous SDN/NFV orchestration for 5G services Ricard Vilalta, A. Mayoral, Raul Muoz, Ramon Casellas, Ricardo Martnez The need for generic control functions and a Transport API The NBI of the

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Distributed multi-tenant cloud/fog and heterogeneous SDN/NFV orchestration for 5G services

Ricard Vilalta, A. Mayoral, Raul Muñoz, Ramon Casellas, Ricardo Martínez

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  • The NBI of the domain controllers are typically technology and vendor dependent.
  • The multi-domain SDN orchestrator shall implement different plugins for each of the

controller’s NBI.

  • The ONF Transport API defines a generic functional model of a control plane that

can be used regardless of a particular vendor, and defines the associated protocol.

The need for generic control functions and a Transport API

WAN (e.g. WDM/Flexi-grid) MAN (Packet Transport Network) MAN (Packet Transport Network)

OF 1.3

OF 1.3 OF 1.3 OF 1.0 OF 1.0 OF 1.0 MAN Controller (SDN) WAN Controller (GMPLS/PCE) MAN Controller (SDN) Transport API (T-API) Multi-domain SDN controller

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ONF Transport API Overview

  • Objective – realize the software-centric approach

to standardization

  • Purpose-specific API to facilitate SDN

control of Transport networks

  • Focus is on functional aspects of

transport network control/mgmt

  • Target is YANG & JSON API libraries
  • Demonstrable code
  • Activity scoped based on use case contributions

and discussions. Examples include

  • Bandwidth on Demand
  • E2E Connectivity Service
  • Multi-layer Resource Optimization and

Restoration

  • Multi-Domain Topology and

Monitoring

  • Network Slicing and Virtualization
  • Topology Service
  • Retrieve Topology, Node, Link & Edge-Point

details

  • Connectivity Service
  • Retrieve & Request P2P, P2MP, MP2MP

connectivity

  • Across (L0/L1/L2) layers
  • Path Computation Service
  • Request for Computation & Optimization of

paths

  • Virtual network Service
  • Create, Update, Delete Virtual Network

topologies

  • Notification Framework
  • Subscription and filtering
  • Autonomous mechanism

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Architecture includes:

  • PCE
  • Topology Manager
  • Provisioning Manager
  • VNTM
  • Flow Server
  • OAM Handler
  • Abstraction Manager
  • Cognition Policer

Multi-domain SDN controller for handling network complexity

Multi-domain SDN controller

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T-API enables integration of heterogeneous wireless and transport networks

  • 5G services requires the integration of all network segments (radio/fixed access,

metro and core) with heterogeneous wireless and optical technologies.

  • T-API enables the integration of multiple Radio Access Technologies (RAT) with

heterogeneous control planes and technologies (5G, mmWave, LTE/LTE-A, Wi-Fi, etc.)

Metro Access/Aggregattion Network Core Transport Network RAT2 MAN Controller E2E Network Controller RAT1 RAT1 Controller RAT2 controller WAN Controller T-API T-API T-API T-API

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Hierarchical SDN Control using T-API

  • We have proposed a hierarchical control approach with different levels of hierarchy (parent/child

architecture) for scalability, modularity, and security purposes in multi-technology multi-domain heterogeneous wireless/optical networks

  • Each successively higher level has the potential for greater abstraction and broader scope, and each

level may exist in a different trust domain.

  • T-API can be used as the NBI of the child SDN controller and as SouthBound Interface (SBI) of a

parent SDN controller in order to provision E2E services

Metro Access/Aggregattion Network Core Transport Network RAT2 MAN Controller Wireless Network Controller E2E Network Controller RAT1 RAT1 Controller RAT2 controller WAN Controller T-API Transport Network Controller T-API T-API T-API T-API T-API

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Peer SDN Control using T-API

  • In a multi-carrier scenario there's no hierarchy, no cross-domain control, no cross-domain
  • visibility. It is reasonable that a peer interconnection model is needed.
  • The Peer SDN model corresponds to a set of controllers, interconnected in an arbitrary

mesh, which cooperate to provision end-to-end services.

  • The controllers hide the internal control technology and synchronize state using East/West
  • interfaces. T-API can be used as the East/West interface.

Metro Access/Aggregattion Network Core Transport Network RAT2 MAN Controller Wireless Network Controller RAT1 RAT1 Controller RAT2 controller WAN Controller T-API T-API Transport Network Controller T-API T-API WAN Controller MAN Controller Transport Network Controller RAT2 controller RAT1 Controller Wireless Network Controller

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  • A Global orchestrator acts as a unified cloud and network operating system

enabling the dynamic management of the virtual cloud and network resources allocated to the specific tenants (slices)

  • T-API is a key enabler for the integration of cloud and network resources

T-API enables global orchestration of cloud and network resources

Metro Access/Aggregattion Network Core Transport Network RAT2 MAN Controller Wireless Network Controller E2E Network Controller RAT1 RAT1 Controller RAT2 controller WAN Controller Transport Network Controller T-API T-API Core DC cloud

  • rchestrator

Global cloud and network orchestrator T-API

Virtual computing and storage resoruces Virtual network resources

T-API T-API T-API T-API

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5G Network Slicing

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5G Network Slicing Proof-of-Concept

Multi-tenant 5G Network Slicing Architecture with Dynamic Deployment of Virtualized Tenant Management and Orchestration (MANO) Instances, A. Mayoral et al., submitted at ECOC 2016.

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The need to unify fog and cloud computing for Telcos: The TelcoFog node

  • We propose a highly distributed and ultra-dense fog infrastructure which can be allocated to

the extreme edge of the network for a Telecom Operator network to provide services based

  • n NFV, MEC or IoT services.
  • The proposed flexible and programmable Fog computing architecture will be based on:
  • containers,
  • software-defined virtual switches and networking,
  • Multi-layer security enabling multi-tenancy, network and service virtualization
  • Smart resource migration and orchestration for mobility support
  • pen APIs, and
  • big data and analytics.
  • Interoperability between different services, orchestrators, nodes, sensors and actuators will

be provided with the extensive and massive usage of YANG information models.

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TelcoFog Scenarios

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UE UE

TelcoFog Tenant1 TelcoFog Tenant2

TelcoFog Controller

Big Data Smart City

Telco Cloud Public Cloud

Access SDN controller SD-WAN controller

ONT

PON OLT MACs

Scenario 1: Network Operator Scenario 2: Smart City TelcoFog node TelcoFog Edge Network

NFV MEC

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TelcoFog Proof-of-Concept

  • End-to-End SDN Orchestration of IoT Services Using an SDN/NFV-enabled Edge

Node

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Conclusion

  • ONF Transport API as an enabler for multi-vendor inter-operability
  • Multi-domain SDN controller handles network heterogeneity and complexity
  • Hierarchical/Peer SDN control are both sides of the same coin
  • IT and SDN joint orchestration in future NFV deployments will be needed
  • 5G Network Slicing – Adding new functionalities to Network Virtualization
  • TelcoFog: unifying fog and cloud computing for Telcos

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Thank you! Questions?

ricard.vilalta@cttc.es http://networks.cttc.es/ons

The research leading to these results has received funding from EU FP7 project COMBO (317762), EU H2020 5G-Crosshaul (H2020-671598) and Spanish MINECO project DESTELLO (TEC2015-69256-R).

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