Carrier Ethernet Transport

Dr. Kumar N SivarajanCTO

© Tejas Networks Ltd

Tejas Networks

A pioneering Indian telecom product companyA world leader in optical transmission technology . Products enable seamless

transmission of voice and data traffic on fiber-optic networks

Among the top ten vendors in the world in the Optical Transmission market.Products deployed in every major telecom network in India and across the

world

Committed to R&D and IPR creation. Indigenous chip-to-chassis design

Distinguished Product

Company Award

CSIR Technology Award from Prime Minister of India

Dr. Manmohan Singh

Award for Excellence

in R&D & Innovation

Deloitte Technology

Fast -50 India 2005-06-07-08-09

Fast-500 Asia 2006-07-08; Emerging Company of

the Year, 2007

Mobilityexplosion

Internet/Dataexplosion

Convergence puts pressure on investments made in circuit switching

Applications are emerging faster than ever…

…and are by need required to be ubiquitous…

…are mission critical (unlike the dot com age)…

…driving unprecedented bandwidth in the networks.

The Bandwidth Equation

Internet in 2000 = YouTube in 2009

Networks are evolving to carry

greater data while supporting voice

Capital invested in circuit switched networks

SDH/SONET equipment deployed

TDM based transmission

Transmission evolution: Carrier Ethernet is an answer to the challenges of convergence

SDH/SONET brought in circuit switched reliability and stability to transmission.

There is also a need to preserve scalability and OAM of SDH/SONET

Sporadic nature ofData traffic

Multiple services over a single channel

Restrictive nature of Point-point transmission

Challenges Carrier Ethernet solutions

Efficient bandwidth utilization with stat-muxing

SLA definition and assurance based on type of traffic

Multicast and multipoint transmissionConnection oriented Ethernet

Carrier grade OAM

The service provider question

How can I provide enhanced Carrier Ethernet services to customers in a converged environment

while protecting existing investments in circuit switched networks?

An answer: Carrier Ethernet over SDH

Various standards define pieces of it

But the question still remained

ITU-T G.707 + ITU-T G.7042 + ITU-T G.7041 = Ethernet over SDH

How does one productize it to answer the service provider question optimally?

Should it be a box replacing a box? Can it not be made simpler for a service provider to upgrade to Carrier Ethernet?

IEEE 802.1 + 802.3 + 802.1ah + ITU G.8032 + ITU Y.1731 = Carrier Grade Ethernet

= Ethernet Services

We combined standards to arrive at a solution

Carrier Ethernet over SDH Transport

The Tejas answer: Introducing ELAN

What is it?

What does it look like?

How does it work?

Advantage service provider!

Carrier Ethernet over SDH on a single card

Plug and play into an SDH/SONET box for Carrier Ethernet enablement

Maximize ROI. Potential investment saving of 90% as compared to investing in new equipment & new fiber and bandwidth saving of 50%

Application: Digital TV provisioning

STM-16 ring

NeedA digital TV infrastructure was to beset up for Western Indian Region

4 * 700 Mbps = 2.8 Gbps! 4 times the bandwidth

•25 transport locations •10 video add/drop points,•150 DTV channel service • 6 Gbps bandwidth needed • STM-16 to STM-64 upgrade estimate $500K

Challenge

Solution: Digital TV with ELAN

STM-16 ringwith ELAN

ChallengeHow to avoid additional infrastructure cost of $500K?

Impact

•Existing STM-16 Equipment re-used

•Multicasting prevented bandwidth explosion

•Reduced capex from $500K to $40K. A saving of 92%!!

•Revenue from a new segment

Only 700 Mbps neededSaving addition of 3-times the bandwidth!

Application: WiMAX backhaul

NeedA cellular broadband service was to be introduced nationwide implementing a WiMAXvariant that supported mobility upto 120 kmph

East AsianTelecom Service Provider

Commercial area Peak traffic 9 AM – 6 PM

Residential area peak traffic7 PM – 8 AM

Peak traffic 9 AM – 6 PM

Peak traffic7 PM – 8 AM

Peak traffic 9 AM – 6 PM

•Varying loads

•Bandwidth needed to be efficiently utilized

•New service to be gradually introduced using existing SDH network

•SDH needed to support efficient utilization

Challenge

100 Mbps

100 Mbps

100 Mbps

100 Mbps

100 Mbps

500 Mbps allocated!

Solution: WiMAX backhaul with ELAN

ChallengeEfficient bandwidth utilization, gradual introduction of new service while re-using existing SDH infrastructure

East AsianTelecom Service Provider

Commercial area Peak traffic 9 AM – 6 PM

Residential area peak traffic7 PM – 8 AM

• 50% savings in bandwidth

•Equals 504 leased line circuits that can be sold

•At TRAI per annum rates for 120 kms, amounts to additional revenue of US$ 2M

Impact

ELAN enabled STM-4 ring caters to demand

ELAN enabled STM-4 ring caters todemand

Shared STM-4 ring of 50 x 5 = 250 Mbps

STM-4 ringwith ELAN

Game changer in the ecosystem

The first one of its kind in the industry. Competition was still thinking boxes!

+Service Provider saves on the cost side and gains on the revenue side for an unmatchable ROI

Received standards approval from Metro Ethernet Forum

Using Carrier Ethernet for multicasting video distribution is an architecture adopted by other service providers as a standard today

A pioneering Indian telecom product company

Global success: Deployed in 50+ countries

Active contributor to global standards

Committed to R&D and product excellence

Distinguished Product

Company Award

CSIR Technology Award from Prime Minister of India

Dr. Manmohan Singh

Award for Excellence

in R&D & Innovation

Deloitte Technology

Fast -50 India 2005-06-07-08-09

Fast-500 Asia 2006-07-08;

Emerging Company of

the Year, 2007

Award for

Excellence in R&D

DSIR, Government of

India, Award for

Excellence in R&D