06 - idnog04 - dion leung (coriant) - emerging trends & real deployments for data center...

Dion Leung, Ph.D., VP Business Development

Emerging Trends & Real Deployments for

Data Center Interconnection (DCI)

Jakarta, July 27, 2017

Who is Coriant?

• Our Mission: Global optical transport networking leadership

• Our Customers: Trusted Tier 1 supplier serving over 500

customers globally, including 90% of the world’s top 50 service

providers and leading enterprises

• Our Company:

– Formed in 2013 and built upon the distinguished heritage and

proven solutions of industry-leading networking suppliers:

» Nokia Siemens Networks

» Tellabs

» Sycamore Networks

– Private company with deep financial resources and committed

ownership

– Over 70 sites in 40+ countries serving 100+ countries

– 35+ years of large deployment & service delivery experience

Connecting

Innovation and

Value

From the Edge

of Your Network

to the Core of

your Business

© 2017 Coriant. All rights reserved. 2

Facebook – presented at NGON 2016

3

Limelight Networks – presented at SWC 2015

4

Equinix – presented at NGON 2016

5

Trends for Data Center Interconnection (DCI)?

6

M

U

X

Individually

Colored

Wavelengths

D

E

M

U

X

Fiber Pair (or Single Core)

Individually

Colored

Wavelengths

Equally spaced channels (aka standard ITU grid)#Open transponders over

any DWDM line systems

#Flexible optical layer

connecting metro, regional,

subsea DCs

Optical layer functions

become #pluggable

© 2017 Coriant. All rights reserved. Company Confidential.

Data Center Interconnection & Applications

7

• Between racks or meet-me-room

on the same floor

• Between racks on different floor

• Between two or more data centers

8

Interconnections “Within” a DC

• Between racks on the same floor and/or

different floors

– X-connection has been one of the main

revenue streams for colocation providers

– For telco and content providers,

x-connections monthly cost can be a large

part of the OPEX, especially in carrier-

dense, expensive DCs in NY, HK, Tokyo

– Low cost DWDM point-to-point solutions are

deployed to reduce monthly recurring cost

– There is also growing interest by hyperscale

DC to deploy point-to-point DWDM

connecting spine and leaf switches

Interconnections Between DCs - Metro & Regional

9

• Between two or more DCs

– DC-to-DC connectivity across metro, regional,

long-haul/submarine regions, e.g. within metro

Jakarta, or between Jakarta to Surabaya, or

between Singapore to Tokyo

– Colocation service providers need high-

speed connectivity to make their tenants feel

like all servers, switches, routers are “virtually”

located in the same DC

– Dark fiber providers who wants to expand

their business from sell “dark” fibers to

wavelength services

– Content providers who are looking to build

their own content delivery network (from leasing

bandwidth to build-their-own network)

Cable Landing Station (CLS) to DC and

DC-to-DC over Submarine Links

10

• Bandwidth Requirements Continue to

Drive Subsea and CLS-to-DC Links

– The new data centers in the region,

especially in HK/SG/JP, have continued to

demand faster connections from the

submarine cables

– Capacity of backhaul links between CLS

and local DC has to be upgraded

accordingly

– It is not uncommon for these links to carry

Tbps of capacity

What is an Open Line System (OLS) Concept?

11

• Open Line System (OLS) Model

– Open network decouples “optical layer” from “wavelength service layer”

– Open software interfaces make network management simpler

– These open transponders must be simple to manage without forcing to use

a traditional NMS system

DWDM

ROADM

Open DWDM line system from Vendor A

(metro, regional, LH, subsea)

Vendor C

Vendor B

Open

Transponder

DCI Pizza Box

NMS, CLI, NetConf, API

Vendor C

Vendor B

Open

Transponder

DCI Pizza Box

DWDM

ROADM

DWDM

ROADM

12© 2017 Coriant. All rights reserved. Source: IHS/Infonetics: 100G+ and ROADM Strategies, Global Service Provider Survey (Nov. 2015)

DCI Applications Constraints Open Line System Drivers

Cost/port and power density lead but …

… ease of integration and DC

automation is key, and…… requirement for Best-in-

Class functions emerging

Infonetics: What are the Drivers for OLS?

Customer’s Requests for the Past 12 Months…

• Conducted trials with 3rd party optical line systems

• A change, a new movement, a new way of growing

their transport networks

13

Customer Proof of Open Line Systems Concept

14

200G/16QAM Transmission (490km) TrialTier 2 Service Provider: Link details for London – Leeds

• 200G/16QAM wavelengths Open Line

Transponder from Coriant and Cisco

over Nokia Transmission

15© 2017 Coriant. All rights reserved. Company Confidential.

Leeds

1830 OLT

1 degree

Site 2

1830 ROADM

2 degree

Site 3

1830 ROADM

2 degree

Site 4

1830 ROADM

2 degree

Site 5

1830 ROADM

2 degree

Site 6

1830 OLA

RAMAM

London

1830 OLT

1 degree

114 km

32 db

70 km

20 db

73 km

21 db

75 km

23 db

98km

30 db

67km

20 db

16QAM @ 191.75THz 16QAM @ 191.75THz

Proof point with Tier 1 US Carrier – 1500km

“Just wanted to let you know that

our soak test of the Groove

between DFW and DEN has

completed and was successful at

8QAM running 150G. We ran for

two days with no errors. The plan

is to put some production traffic on

this unit.”

Global Network Services


Trends for Data Center Interconnection (DCI)?

17

M

U

X

Individually

Colored

Wavelengths

D

E

M

U

X


Individually

Colored

Wavelengths




become #pluggable


Miniaturization: EDFA Technology Example

MSA / Module Based XFP / Pluggable Based

18

EDFA: MSA (90x70mm2) EDFA: Ultra-Mini (60x40mm2)

EDFA: XFP & OFP2


XFP-EDFA

Other Possible “Pluggable” Functions…

Miniaturization of Optical Layer Components− EDFAs

− EVOAs

− OCM

− WSS

− OSC

Compact Low Loss Filters− Low insertion loss-Enables extended passive architectures

and more complex channel plans

− Reduced footprint

EVOAs with Auto Attenuation− EVOA with integrated photodiode

Power Tone for Amplifier Gain Setting: − Cost-effective solution for automatic gain setting on amplifiers

EDFA: MSA (90x70mm2) EDFA: Ultra-Mini (60x40mm2) EDFA: XFP & OFP2

Pluggable Optical Layer: Trends and Evolution

20

Low Upfront Cost

Functionality

Passive Fixed Gain

Amplifier

Variable Gain

Amplifier

Manual Gain

Setting

OCMPer Ch Power Monitoring,

Auto balancing and gain

setting

CWDM Filters EVOAs

for extended

reach

Broadcast &

Select ROADM

Raman Amplifier

DWDM Filters Route & Select

ROADM

Power ToneAmplifier gain setting

OSCIn-band Management &

Amplifier Gain Setting

OTDR

Allow users to optimize, mix-and-match functionalities

for a variety of DCI applications… hopefully with better costing

Pre-Amp+

Booster

Trends for #DCI?

21

M

U

X

Individually

Colored

Wavelengths

D

E

M

U

X


Individually

Colored

Wavelengths



#Flexible optical layer

connecting metro, regional,

subsea DCs


become #pluggable


ROADM – Basic Concept and Value

• For initial Point-to-Point network, Fixed OADM (FOADM) network architecture worked fine.

• A problem arises when we have intermediate location that requires “partial” adding/dropping of traffic manual patch work is needed

DC1 DC340km

12dB

DC220km

8dB

5 months ago: 10 x 10GE connectivity between DC1 and DC3

10 x 10GE

5 x 100GbE

Next month: 5 x 100GE connectivity between DC1 and DC3 (via DC2)


What Do You Need to Do at DC2?

• Some cable patching work is required to get the 100G wavelengths passing via DC2

• For small l counts, the job is manageable. But for full 40/80/96 DWDM channels,

ROADM architecture will allow user-selective add/drop capability.

DE

MU

X MU

Xl

l

l

l

l

l

l

l

l

l

1. Engineers puts in a physical patch

cord, which introduces insertion loss

and it affects the overall link budget.

2. Each wavelength added

needs to be re-balanced…

l 3. Regeneration is often

needed due to deficit power budget

DC1

DC2

DC3


How a 4-Degree ROADM Node Works…

A/D

Ex2

Ex4

Ex3

ROADM

Fiber

Line

A/D

Ex3

Ex2

Ex4

ROADM

Fiber

Line

A/D

Ex2

Ex4

Ex3

ROADM

Fiber

Line

l

Mux / Demux

l

l A/D

ROADM

Fiber

Line

Ex2

Ex3

Ex4

Mux / Demux

l

lExpress Cable

Automatic

Power

Equalized

Wavelengths

Adding new ROADM

“degrees” when new

connectivity is needed

DC1 DC3

DC2

DC4DC5

Various Kinds of ROADM Implementation Today…

25

What types of ROADM line system is right for you?

It depends on your application and design objectives.


Individual

Modules

ROADM-on-a-

Blade

Pluggable

Optical Layer

Footprint & Power

Flexibility (to mix & match

components)

ROADM Scalability

(Degrees, Channels)

Advanced ROADM

Add/Drop (CDC, Flexigrid)

Performance/Reach

Ease of Installation

Cost of Replacing Failed

Hardware/Sparing

A Good Optical Planning Tool “Always” Helps…


Especially if you fiber optic

layer begins to grow…

… or if latest technologies,

including colorless,

directionless, contentionless,

gridless, are considered.

Thank You.

You can find me on Linkedin

https://www.linkedin.com/in/dionleung/

06 - idnog04 - dion leung (coriant) - emerging trends & real deployments for data center...

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