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www.lightreading.com

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NFV in Mobile CoreNetworks

Controlling the virtualizedenvironment

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Agenda

Commercial & Technical Drivers for NFV

NFV in Mobile Core

Discussion of NFV Platform Roadmap Conclusion

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Drivers for NFV

Feartelco networking at risk of being relegated to expensive niche

Opportunity9M servers sold in 2012; only 300K to telecom operators

InspirationWeb-scale companies now a force in networking

Source: Telefonica, 2013

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Network Functions as Software

New design challengeswrite functions to scale in a cloud infrastructure

New operational challengessecurity, reliability, provisioning, management, etc.

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Two Approaches to NFV(to be pursued simultaneously)

Application-driven NFV Platform-driven NFV

Operator starts with

a particular function

or domain e.g. IMS

Increase VNFs over

time as technology

& opportunity allow

Faster, less risky;

an opportunity to

experiment

Operator starts to

develop a horizontal

platform to run VNFs

Evolve platform to

support demanding

workloads; add VNFs

Strategic, disruptive,

expensive; long-term

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NFV in Mobile Core

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HSS

CSCF

TAS

MME

MME

Anti Virus

TCP Opt

GC-NAT

DPI

Parental

Charging

RCS

HSS

Web Proxy

IPsec

Video

Analytics

P-CSCF

Firewall

IMSSubscriber

database

SGW PGW

Gi-LAN

PCRF

PCRF

PolicyMME Pool

= Services LAN= Control-plane = Data-plane

Internet

Control-Plane will Lead

Key Debate is around Bearer-Plane Functions

Virtualization in the Mobile Core

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Control-plane will Lead

Control-plane applications are transaction-ratecentric and are already deployed on x86platforms (either COTS or proprietary)

Relatively straightforward to virtualize thesefunctions

Virtualized solutions can perform better thancurrent hardware-defined products

e.g. greater elasticity and adaptability to signallingsurges

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Gi-LAN Service Chaining

P-GW

External Networks

e.g. InternetSGi

VideoOptimization

Firewall &

IPSAd Insertion

Parental

Control

Policy

Enforcement

Video

Cache

Trusted Service

Content Partner

Content Partner

Untrusted

Website w/Video

Virtualized Services in the Cloud

Policy-controlled

Service Flows

OCSHSS

Virtualized Control-Plane

CSCF PCRF

SDN

Need for application awareness

& policy orchestration

Workflow Enabled by Virtualization9

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Fully Virtualized Mobile Core

vPGW

vSGW

vDPI

vFW

vMME

vHSS

vDNS

vPCRF

Internet

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NFV & Service Agility

Software-centric networking changes the innovation model

Workflows created in software according to service definitions

Use case-specific service chaining mapped to traffic profiles

A model that replicates the functionality of physical nodesin VMs is probably not the best approach

Service

Definition

Software

Configured

Workflow

Routing

Processing

Charging

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NFV Platform

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Roadmap to NFV

VNF

VM2

VNF

VM1

VNF

VM3

VNF

VM4

Virtual izat ion

ATCA or x86-based

telecom serverVNF

VM2

VNF

VM1

VNF

VM3

VNF

VM4

Virtual izat ion

COTS x86based server

Network

Function

Unvir tual ized

ATCA or telecom

platform

Server

ConsolidationOpen Server

Consolidation

VNF

VM4

VM5VNFVM1

VM2

VM3

C l o u d

COTS x86 based

resource cloud

VNF

VM6

Business and OPEX

transformation

Network

Function

Unvir tual ized

Bare metal port to

COTS x86based server

Port to COTS

Server

(e.g. for data-

plane PoC)

(also for PoC)

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When is the Technology GoodEnough?

Time

Capability

NFV Cloud / SP SDNCreate a platform with

potential to leap-frog

classic pathway

Classic Network

Performance jump w/ new

generation platforms; then

incremental gains

Duplication of costs &

intellectual investment!

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Conclusion

The mobile core is an attractive network domainto virtualize using NFV principles

The control-plane can benefit most from

virtualization and will lead the transition It looks viable to virtualize the data-plane, but it

will take time to make it commercially attractive

NFV-based solutions need to be markedly betterthan the classic pathway

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Documents

LRU-Track-2-amdocs-11.14.13