Open, Hierarchical

SDN Control Systems:

Ecosystem Progress

Chris Janz, Technical VP

Next-Generation Optical Networks, Nice 2016

2

“ Network Infrastructure is our most important platform, it is our core competitiveness to

engage in Internet business.”

- Sun Zhengyi in SoftBank

SaaS

PaaS

Operator

OTT

IaaS

NaaS

Cloud

Data Center

Network

Application

Operator

OTT

Communication Information Entertainment Social networking

Service Cloud Cloud Service

Distributed Data Center Centralized Data Center

E2E network DCI

Cloud

Data Center

Network

Application

3

The provisioning of planned inter-DC services takes several days to

weeks.

Burst services such as big data analysis and cloud computing bring

heavy IDC workloads, resulting in unpredictable service quality

deterioration.

Service faults should be quickly located. The KPI for level-1 fault

recovery must be less than 2 hours.

Services provisioned in

minutes/seconds.

Dynamic BW adjustment for

scheduled workload operations.

Workload-network service

scheduling automation.

Quick, efficient and

automated fault recovery.

The global DC traffic in 2019 is predicted to rise to

10.4 ZB, at the CAGR of 25%. Source: Cisco,

Fast service provisioning Flexible service pipes Simplified Operations

Global Data Center Traffic Growth

4

OTN network

Common IDC B Common IDC A

Super

IDC

Huawei T-SDN Controller

Challenge

Transport-SDN IDC Network

• Inter-IDC operations underpin almost all Baidu

services.

• All inter-IDC traffic is forwarded by the super IDC,

resulting in IDC load imbalances and a requirement

for excess transport capacity.

DCI Network in Eastern China

Bandwidth calendaring: Bandwidth can be added or

deleted at planned times for planned IDC operations.

Load balancing: Bypass function based on OTN cross-

connection improves global network efficiency.

App: Service departments such as Baidu finance and

video can provision services online, simplyfing operations.

Huawei BoD Other apps

5

Third-party SDN

controller

Multi-Domain

Management Service

Models

Policy

Management …… Netmatrix

Orchestration

NMS

BoD Automation

Multi-Layer

Management

OVPN

……

…… Applications

SBI (PCEP)

NBI

TE DB

LSP DB SNC-T

Controller

IDC

Enterprise

IDC

Enterprise

RESTful API

RESTful API

QX

MTOSI

Resource

Management Route

Computation Restoration

Service

Configuration

BSS/OSS

6

① E2E Service Provisioning

Value: days/hours down to minutes/seconds for service provisioning with SRLG management between IP & optical.

② Multi-Layer Traffic Optimization

Value: avoid local traffic congestion, reduce CAPEX.

A1 B1

A2

A3

B2

“Mice flow” services multiplex in IP layer

“Elephant flow” services

bypass via optical layer

③ Multi-Layer Protection & Restoration

Value: protection auto-negotiation across IP & optical, reduce CAPEX.

IPTV

1 2

④ OAM Synergy, Fast Troubleshooting

Value: unified control, fast service troubleshooting, reduce OPEX.

7

Orchestration

IP+Optical Control Synergy

Transport Control Federation

Transport Domain Controller

(Vendor C)

Transport Domain Controller

(Vendor D)

IP Control Federation

Hierarchical SDN Controller

(IP + Optical) NBI: IP/MPLS Link/Tunnel

IP Controller (Vendor A)

IP Controller (Vendor B)

Hierarchical SDN Controller

NBI: Standards-Based Abstract Topology/Tunnel

NBI: Intent, Abstract Topology/Tunnel

NFV

Evolved OSS/BSS, CSO, etc.

“Narrow Waist”

Service Composition Cross-Domain Composition

Network Resource Real-Time Control

OPEN-O

Arbitrary SBIs

Legacy/Proprietary Domain Controllers, SBIs Controller Hierarchy/Federation Standard Transport (TE) NBI Abstractions Open Source Hierarchical Controllers, Orchestrators Clear Orchestration/Control Demarcation

8

ONOS-Based Hierarchical Controller

Domain A

Domain B

Domain C

OSN 9800

ONF T-APIs:

- Topology Service

- Connectivity Request/Retrieval

- Path Computation Request/Retrieval

T-SDN Domain Controller

T-SDN Domain Controller

T-SDN Domain Controller

Transport domain controllers,

Transport equipment domains

http://www.marketwired.com/press-release/huawei-crowned-winner-of-sdn-idol-2016-at-open-networking-summit-2107082.htm

9

Global topology capture & display

High-performance restoration (multiple approaches)

E2E service provisioning (rich constraint menus)

ONOS and standard T-APIs support workable multi-vendor, multi-domain T-SDN on an open system basis

https://www.youtube.com/watch?v=jcmXgXVEeCk

10

Hierarchical Controller

Domain Controller A

Domain Controller B

Domain Controller D

Domain Controller E

Hierarchical Controller

Hierarchical Controller

Domain Controller C

Hierarchical Controller

Potentially unlimited number of levels of hierarchical controllers Parent-child and lateral confederation among hierarchical controllers

Standard N-S and E-W interfaces based on IETF YANG models

Standard I/F (N-S)

Standard I/F(E-W)

IETF Drafts: Hierarchical Control Framework

• ACTN Requirements: draft-ietf-teas-actn-requirements

• ACTN Framework: draft-ceccarelli-teas-actn-framework

IETF Drafts: Topology

• Network Topology: draft-ietf-i2rs-yang-network-topo

• Abstract TE Topology: draft-ietf-teas-yang-te-topo

• OTN TE Topology: draft-zhang-ccamp-l1-topo-yang

• WDM Topology: draft-ietf-ccamp-wson-yang

IETF Drafts: Tunnel

• TE Tunnel: draft-ietf-teas-yang-te

• Transport tunnel: draft-zhang-ccamp-transport-ctrlnorth-yang

ONOS Hummingbird & “I” releases:

• Critical–mass for PoC demo support:

“I “release (11/16)

In parallel – OSSDN Breckenridge:

• PAL for ONF T-API support NB

11

Other-Party

Domain Controller

Cross-stratum

orchestration Application

model

Policy

management …… Orchestration layer

EMS/NMS

Traditional NMS

BoD Automation Planning OVPN

… …

Third-party app Application layer

SBI (PCEP)

NBI

SNC-T

Controller

RESTful API

QX

Resource

management Path

computing Restoration

Service

configuration

BSS/OSS

Super Controller

RESTful/RestConf/YANG

RESTful/RestConf/YANG

IDC

Enterprise Enterprise

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