Introduction of ONOS and core technology

ONOS SDN Controller소스코드 분석 및 SDN 응용개발

Mobile Convergence Lab, Computer Engineering, Kyung Hee University

Sangyun Han

Email : sangyun0628@khu.ac.kr

SDN/NFV 이론, 실습, 최신동향

[ONOS 소개 및 최신동향]

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목차A Table of Contents

etc…

ON.LAB

Open Networking Lab 소개 및 관련 프로젝트

ONOS

ONOS(Open Network Operating System) 소개, 아키텍처 분석

최신동향 및 Use-case기업 관련 UseCase, 방향성

Q&A

질의응답

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Non-profitTools/Platforms for SDN community

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• Non-profit, carrier and vendor neutral

• Provide technical shepherding

• Build community

• Many organizations supports

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Supporting members

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Projects

SDN Network Operating System & SDN Control Platform

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• Carrier grade SDN OS for service providers

• SDN OS with scalability, high availability, high performance and right abstractions

• By

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Their mission is to enable Service Providersto build real SDN/NFV solutions.

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ONOS community

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15Mobile Convergence Laboratory

ONOS의 목표는뭘까?

기존의 수많은SDN controller

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C++/Python

C/C++

Python

Java

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commercialproducts

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commercialproducts

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High Availability

• Multiple Instance Clustering

• Fault tolerance using Distributed Core

• Five Nines availability

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High Availability High Performance

• High Throughput• ~500K-1M path setups/second

• High Volume• ~500GB-1TB state data

• Low Latency• 10~100ms

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High Availability High Performance Scalability

• OSGi based OSS Karafè Deploy, Config• Distributed Clusteringè Sync, Share• Dynamic Clustering

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High Availability High Performance Scalability White Box (Open)

Reference : ONOS wiki

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High Availability High Performance Scalability White Box (Open)

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Avocet Blackbird Cardinal Drake Emu Falcon Goldeneye H…

1.0.01.1.0

1.2.0

1.3.0 1.4.01.5.0

1.6.01.2.11.0.1 1.5.11.2.2

ONOS ArchitectureThe changing history of architecture

Overall architecture

Subsystem Structure

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Architectural Tenets

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• High availability, scalability and performance

• Strong abstractions and simplicity

• Protocol and device behavior independence

• Separation of concerns and modularity

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The History of ONOS architecture

Founded - 2012

ONOS prototype 12013

(scalability, availability)

ONOS prototype 22013

(performance)

First OpenAvocet 1.0.02014.12.05

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Prototype-1 (1G core)

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Prototype-2 (2G core)

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Clustering Synchronize Data Sharing

Avocet(v1.0) & Blackbird(v1.1) (3G core)

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Cardinal(v1.2) (4G core)

• RAFT Consensus Algorithm• Copycat/Atomix OSS• ConsistentMap• CP system

• Gossip protocol based anti-entropy• EventuallyConsistentMap• AP system

ONOS Overall Architecture

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ONOS Core Technology

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구체적인 서비스를위한 Application 계층

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Application 계층에네트워크 정보 전달,하위 컴포넌트 제어를위한 인터페이스 제공

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ONOS의 핵심적인 역할을 하며, HA와 Scalability를 위한분산 클러스터링 기능

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네트워크 인프라 제어를위한 인터페이스 제공Network Element 추상화

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Network Element 설정을 위한 프로토콜OpenFlow : SDNNetConf : Legacy

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ONOS Core Subsystems

Device Link Host

Topology

Flow Rule

Path

Packet

StatisticsIntent

Application

Leadership

Messaging

Storage Region

Mastership

Driver

Group

Security

Flow Objective

Event

OpenFlow NetConf OVSDB

Core Cluster

. . .

Proxy ARPMobility L2 Forwarding

REST API GUI CLI

Network Cfg.

SDN IP / BGP Packet / Optical

Tunnel

. . .

OSGi / Apache Karaf

Network Virt.

Device Cfg.

Config

UI Extension

External Apps

Graph

Discovery Tenant . . .

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ONOS Subsystems Structure

Northbound

Core

Southbound

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ONOS Subsystems Structure

• Provider• Interface with the network via

protocol-specific library

• Manager• Receives information from

Providera and serves it to application and service

• Store• Synchronizing the information

received by the Manager

• Distrbuted• Set up as a cluster of instances

• Symmetric• Each instance runs identical software and configuration

• Fault-tolerant• Cluster remains operational in the face of node failures

• Location Transparent• A client can interact with any instance. The cluster presents the

abstraction of a single logical instance

• Dynamic• The cluster can be scaled up/down to meet usage demands

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ONOS Distributed Architecture

Scale-out / HA scenarios

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Distributed Core

Instance 1

Scale-out by Distributed Core (1)

Network GraphGlobal network view

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Distributed Core

Instance 1 Instance 2 Instance 3

Scale-out by Distributed Core (2)

Network GraphGlobal network view

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Distributed Core

Instance 1 Instance 2 Instance 3

HA by Distributed Core (1)

Network GraphGlobal network view

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Distributed Core

Instance 1 Instance 2 Instance 3

HA by Distributed Core (2)

Network GraphGlobal network view

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Distributed Core

Instance 1 Instance 2 Instance 3

HA by Distributed Core (3)

Network GraphGlobal network view

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E

ONOS Application (1/3)

• Apps are delivered via ONOS App aRchive (.oar) files• pom.xml / features.xml / bundle 을 포함하여 .oar 파일 형태로 배포• OAR 파일은 maven으로 빌드할 때, onos-maven-plugin에 의해 생성

• ONOS application 종류• Bundle application

• Service Interface application

• Service Component application

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ONOS Application (2/3)

• ONOS application 종류• Bundle application

• API를 제공하지 않고 자체적으로 모든 기능을 수행

• Service Interface application• 다른 app에서 접근가능한 API를 제공하는 형태 ex>CLI, REST api, GUI

• Service Component application• Activate/Deactivate 등 메소드를 가진 형태

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ONOS Application (3/3)

• Maven을 이용한 ONOS app 프로젝트 생성 방법• maven template toolkit에 의해 skeleton code가 제공

• ONOS archetype• onos-bundle-archetype

• $onos-create-app bundle [groupId] [artifactId]

• onos-cli-archetype• $onos-create-app cli [groupId] [artifactId]

• onos-ui-archetype• $onos-create-app ui [groupId] [artifactId]

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APIhttps://wiki.onosproject.org/display/ONOS/Download+packages+and+tutorial+VMshttp://api.onosproject.org/1.3.0/

Recent Trend of ONOSTrend

Use case

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The center of SDN/NFV

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ONOS Framework(ONOSFW)

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ONOS as an SDN controller within the

VIM

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ONOS with Linux Foundation

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Central Office Re-architected as a Datacenter

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Mobile Convergence Laboratory 61http://opencord.org/

Mobile Convergence Laboratory 62http://opencord.org/https://vimeo.com/148210802Webinar : ONOS CORD

Mobile Convergence Laboratory 63http://opencord.org/https://vimeo.com/148210802Webinar : ONOS CORD

Mobile Convergence Laboratory 64http://opencord.org/https://vimeo.com/148210802Webinar : ONOS CORD

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M-CORD E-CORDR-CORD

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OpenFlowSwitch

SDN-IP

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1

2

3

4

eBGP

eBGP

Receive External router’s advertisement iBGP

TransformRouting information-> intent request

Translate request into OpenFlow entries

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Pi only SDN (1/3)

Raspberry Pi

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Pi only SDN (2/3)

ONOS controller

Pi Stack Switch(SDN Switch)

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Pi only SDN (3/3)

Raspberry Pi Screen running ONOS

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Use Cases Feature Proposals

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