leveraging the change for nfv ras design · page 9 huawei technologies co., ltd. sounds good，but...

www.huawei.com HUAWEI TECHNOLOGIES CO., LTD.

Leveraging

the Change

for NFV RAS Design

Xuewen (Sean) Gong

Chief Expert of NFV/SDN RAS Design

HUAWEI TECHNOLOGIES CO., LTD.

NFV is on the Fast Lane for Commercial Deployment

2013 2014 2015 2016 2020

PoC

From lab to

field trial

Beginning of

commercial

deployment

More

commercial

deployment Widely started commercial

deployment

Theory

discussion

2012

Industry start

2017

0% 10% 20% 30% 40% 50% 60% 70%

Selecting NFV use cases

Incomplete standards

CIO-CTO responsibility …

Test/service validation …

Lack of open NFV …

Unknown ROI

Integrating NFV into …

Unknown TCO

OSS/BSS for NFV

Finding/training staff

Products not carrier grade

Source: NFV Strategies , Global Service Provider Survey, Infonetics, 2015 Source: Hype Cycle for CSP Infrastructure,Gartner

TECHNOLOGY

TRIGGER

PEAK OF

INFLATED

EXPECTATIONS

TROUGH OF

DISILLUSIONMENT

SLOPE OF

ENLIGHTMENT

PLATEAU OF

PRODUCTIVITY

MATURITY

VIS

IBIL

ITY

NFV@2013

NFV@2014

NFV@2015 NFV ISG

NFV POC

Early adoption

commercial

Hype Cycle of NFV Technology Barriers to Evaluating or Deploying NFV


The Profound Change Brings Big Challenges, and We are Working on It

1. Less reliable COTS

2. Virtualization layer decouples

HW/SW and breaks the traditional

telecom HA design.

3 , New fault modes by the new

virtualization layer.

5. Integration of HW/SW Components from different providers

make fault localization more challengeable (Cross-

layers/Nodes)

6. New and Complex software may have more defects

4. Open Source: Bazaar vs. Cathedral,

Far more about Function —— Reliability& Availability is key for NFV’s commercial success！


The other Side of the Coin

Scale out, Load balance

Loose Coupling/Decoupling

Distributed /De-centralization

Statelessness

......

Not Only Challenges but

also Opportunities for HA

Session Database

Load Balancer

Service Processing

Cloud OS

Hardware


VNF Load Balancing Models

Infrastructure Network Load Balancer

VNF E2E Load Balancing

VNF External Load Balancer

Source: ETSI GS NFV-SWA 001


VNF Scaling Models

On-Demand Scaling (ex: scale out/in) Auto Scaling trigger by the VNF Manager



State is Hell, Stateless for HA

Source: ETSI GS NFV-REL 001


State is hell...Everything that can

be stateless should be stateless.

——Ken Arnold

State can‘t be avoided, it‘s about

where you store it.


Leverage the Dynamic for HA Diversity Design

Source: ETSI GS NFV REL001

Service/Software Defined Availability


Sounds Good，BUT Not Silver Bullet

Provider 2014 Downtime

(hrs/yr)

2015Downtime

(hrs/yr)

Amazon Web

Service

2.41 2.5

Microsoft

Azure

39.77 10.82

Google Cloud

Platform

4.46 11.57

Joyent 2.6 0.57

Rackspace 7.52 12.5

Source: CloudHarmony

“Verizon upgrade triggers 40-hours cloud service outage” Fierce Telecom,, 1/12/2015

“Google Compute Engine, AOL Mail Suffer Early Morning Outages”, DataCenterKnowledge, 2/19/2015

“Google suffers new cloud outage, promises to be “better prepared”” SiliconANGLE， 3/9/2015

“£17m: Cost of Apple 12-hour cloud outage”, CloudHUB, 3/12/2015

“JetBlue Computer Outage Causes Major Check-In Delays”NBC News，3/30/2015

………

Apple to Apple? The 9s Facts —— E2E？ Real time service？ Partial Outages?......


Small Details make Big Difference， and No “One Size Fit All” When you design distributed systems, you have to say, "Failure happens all the time." So when

you design, you design for failure. It is your number one concern ——Ken Arnold


Huawei’s Best Practice for Carrier-Grade NFV ——Architecture and innovative Design for HA

Distributed

Database

CloudEPC

DC DC

No service interruption upon DC Failure

True Cloudified Architecture

Stateless

Process Unit

Distributed

Load Balancer Balanced service distribution between DC

No service loss with smooth Scaling

3rd Party

Virtualization

Higher resource utilization

Virtualization Cloudification

>10 min

Virtualization

Seconds

20% Resources Saving

Active-Standby Data synchronization

between active and standby

Cloudification

Cloudification

Faster scaling in & out

Higher Availability with All-Active Backup

All-Active No need data synchronization

between each node

SOA BUS

1

2

3

Key Design Concepts: SOA + Stateless Design + Session LB


Huawei’s Best Practice for Carrier-Grade NFV ——Leverage Carrier-Grade Best Practice

System Design

Architecture

evaluation

FMEA HW & SW Design

Physical Design

Information Develop

Validate & TestMaintenance

Test

Design review

Failure mode

database

(device)

Design rule

database

Test case

database

Quality Target

Operational Improvement

TOP problem

DCR E-flow PDM ECSupplier

contract E-flow

GT 3000PCN / problem

fixed E-flow

Management

improvement

CMMI

improvement

IPD / ISC / ORM

improvement

Technical

improvement

Failure mode analysis

database


Quality problem

CMM defect

trace E-flow

Parts for analysis

trace E-flow

Device for analysis

Trace E-flow

GCRMS

Service problem

report

Root case analysis trouble shooting

Batch Analysis

Failure Reporting

Defect prevention

Correct action

Plan Develop Qualify launch Life cycleConcept

correct action

trace e-flow

inte

gra

tion

Improvement Correct actionDefect prevention Root case analysis

Failure mode

database

(equipment)

Failure mode

database

(network)

System Design

Architecture

evaluation

FMEA HW & SW Design

Physical Design

Information Develop

Validate & TestMaintenance

Test

Design review

Failure mode

database

(device)

Design rule

database

Test case

database

Quality Target

Operational Improvement

TOP problem

DCR E-flow PDM ECSupplier

contract E-flow

GT 3000PCN / problem

fixed E-flow

Management

improvement

CMMI

improvement

IPD / ISC / ORM

improvement

Technical

improvement


database


Quality problem

CMM defect

trace E-flow

Parts for analysis

trace E-flow

Device for analysis

Trace E-flow

GCRMS

Service problem

report

Root case analysis trouble shooting

Batch Analysis

Failure Reporting

Defect prevention

Correct action

Plan Develop Qualify launch Life cycleConcept

correct action

trace e-flow

inte

gra

tion

Improvement Correct actionDefect prevention Root case analysis

Failure mode

database

(equipment)

Failure mode

database

(network)

FRACAS (Failure Reporting, Analysis and Corrective Action

System)


Keep Moving forward and to Be Ready for Cloud Native Carrier Grade NFV

We are here

Dedicated

Service and Data

Tightly coupled

HW - SW Binding

Virtualization

Service and Data

Tightly coupled

Decoupled

Cloudification

Session Database layer

Load Balancer

Service Processing Unit

Separated interface layer

from service layer internal

Separated service state

from service process unit

Decoupled VNF Internally

Cloud Native

Micro Module

PaaS

Slicing

On-Demand

Break from inside instead of crash by outside

Copyright©2015 Huawei Technologies Co., Ltd. All Rights Reserved.

The information in this document may contain predictive statements including, without limitation,

statements regarding the future financial and operating results, future product portfolio, new technology,

etc. There are a number of factors that could cause actual results and developments to differ materially

from those expressed or implied in the predictive statements. Therefore, such information is provided

for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the

information at any time without notice.

leveraging the change for nfv ras design · page 9 huawei technologies co., ltd. sounds good，but...

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