vcpe challenges and ways forward

ECI Proprietary

VIRTUAL CPE –

CHALLENGES AND

PATHS FORWARD

Hayim Porat

ECI CTO

ECI Telecom Proprietary and Confidential 2ECI Proprietary 2

NFV PROMISE

NFV value already proven in

data centers

Expected to speed past SDN

in terms of CSP network

deployment

But lot’s remains to be done

NFV

From Gartner Hype Cycle for Communications

Service Provider Infrastructure, August 2015

SDN

Plateau in CSP networks reached in:

2-5 years 5-10 years

Today’s Discussion:

v-CPE use case


PHYSICAL CPE (P-CPE)

Network functions for

interworking enterprise

LANs across the WAN

Demarcation, routing, VPN,

NAT, WAN optimization,

security, etc.

Implemented physically at

customer premises using

multiple dedicated

appliances

Service Provider or

Cloud NetworkP-CPE

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VIRTUAL CPE (V-CPE) AT

CUSTOMER PREMISES

Implements physical CPE

functions in software (VNFs) on

a standard commercial server

Consolidates functionality

facilitating mgmt and upgrades

Some functions need to

persist in legacy P-CPE

Does not provide benefits of

cloud-based virtualization

P-CPE

V-CPE

Virtual network

functions (VNFs)

of physical CPE

Service Provider

or Cloud Network

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CLOUD-BASED V-CPE

VNFs implemented anywhere

between the customer premises

and remote data centers

Provides cloud implementation

benefits: Elastic use of shared

resources

Statistical multiplexing

New services models

Virtualization based on ETSI

NFV framework

P-CPE

V-CPEVirtual network

functions (VNFs)

of physical CPE

Service Provider

or Cloud Network

May be 100’s of km apart


ANTICIPATED

BENEFITS OF V-CPE Service providers – New

revenue streams

Enterprises – Outsourcing

and simplification

Other:

Lower equipment costs

Eliminate truck rolls

Best of breed applications

Customization

Continuous updates


YET HEADWINDS

EXIST

Virtualization issues• Functional distribution

• Management complexity

NFV issues• Performance

• Energy

Link issues• Traffic Tromboning

• Security

• Latency


FUNCTIONAL DISTRIBUTIONNATURAL CUSTOMER PREMISES FUNCTIONS

Termination point

Enterprise network monitoring

L2 forwarding

Access link encryption

Ethernet access

Wireless LAN

WAN load balancing

WAN optimizationP-CPE

V-CPE


V-CPE

Service Provider

or Cloud Network

Routing and

multicast

Session

border control

NAT and/or

DHCP

IPsec Security (firewalls, DPI,

DDOS, etc)

Configuration

management

Performance

monitoring and

logging

VoIP (PBX)

Value added

business services

Caching

FUNCTIONAL DISTRIBUTIONWAN LOCATABLE FUNCTIONS


MANY FUNCTIONAL DISTRIBUTION DECISIONS

Service Provider

or Cloud Network

P-CPE

V-CPE V-CPE

WAN Locatable Functions

Routing and multicast

Session border control

NAT and/or DHCP

L2 and L3 VPN

IPsec

Security (firewalls, DPI, DDOS, etc)

Configuration management

Performance monitoring and logging

VoIP (PBX)

Value added business services

Caching

Natural Customer Premises Functions

Termination point

Enterprise network monitoring

L2 forwarding

Access link encryption

Ethernet access

Wireless LAN

WAN load balancing

WAN optimization

Virtual or physical?

Virtual at CP or

within WAN?

Customer

Portal

NFV MANO

EMS

NMS

OSS

Local

Mgmt


ADD MANAGEMENT COMPLEXITY

Service Provider

or Cloud NetworkP-CPE

V-CPE

V-CPE

WAN Locatable

FunctionsNatural Customer

Premises Functions

NFVi

Manager

VNF

Manager

Orches-

trator

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NFV ISSUESPLATFORM VERSUS APPLIANCE

General purpose vs.

dedicated appliances

Input/output

processing

Power

consumption

FW throughput

about 10 Gbps

600W

FW throughput

60 Gbps

250W

SW licensing

costs


CHEAPER YES? BUT HOW MANY

X =?


BUSINESS CASE CONSIDERATION

COST OF ENERGY

Annual Energy cost (assume 1000 servers)

= 1000 x 0.5kW x $0.1/kWh x 24 x 365

= $0.5M/year

Significant costs moving from

businesses to the carrier

X

=

?

ECI Proprietary 15

P-CPE

1. Cleartext

2. Service provider

IPSec Tunnel

4. User’s

encrypted traffic

Service

Provider or

Cloud Network

3. IPsec decryption,

vCPE processing,

User encryption

vCPE needs cleartext to

process data

However the medium

between the CP and

cloud is unprotected

Hence both user

encryption and tunnel

encryption is required

Doubles processing and

energy costs

LINK ISSUES

V-CPE

V-CPE

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P-CPE

V-CPEService Provider

or Cloud Network

V-CPE

Can occur frequently• DHCP

• DNS

• AAA

Creates link congestion

Can add many 10s of

ms to transactions

LINK ISSUESTROMBONING AND

LATENCY

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SO HOW DO WE

BEST LAUNCH

THE GOOD SHIP

V-CPE?


SOME STEPS TO

CONSIDER

NFV acceleration

NFV at the network edge

Hyper-converged cloud


NFV ACCELERATION

Supplement NFV for intensive

input/output or other processing

tasks not best suited to general

purpose computing

Create a hybrid device with best

of both worlds

Optimize for first cost and

energy costs

Optional add-on only when

needed


NFV TO THE NETWORK

EDGE

Reduces latency

Limits tromboning to the last

mile

Also a platform for edge

computing services (e.g.

MEC, IoT, M2M, AR)Service Provider

or Cloud Network

P-CPE

V-CPE

Move NFV from anywhere in the

network or cloud, to as close as

possible to the network edge

V-CPE

V-CPE

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HYPER CONVERGED

CLOUD

Strong fit with distributed

network edge computing

Eases complexity through

local plus hierarchical

management

Servers Storage Network Management Security Facilities Services

Converged Infrastructure

Compute

Storage

Networking

Intelligence

Virtual Machine

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Multiple platforms for best

application fit Neptune packet transport

system integrated blade

Stand-alone module

I/O acceleration

Library of best of breed VNFs

Fully hyper converged cloud

platform based on

OpenStack

ECI ELASTIC

VIRTUALIZATION

Mercury NFV platforms


“Simplicity is a great virtue but it requires hard work

to achieve it and education to appreciate it. And to

make matters worse: complexity sells better.”― Edsger W. Dijkstra

ECI Proprietary

THANK YOU!

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vcpe challenges and ways forward

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