Next Generation IP over WDM Network Architectures · PDF fileNext Generation IP over WDM...

Next Generation IP over WDMNetwork ArchitecturesGeoff BennettDirector of Product Marketing, Infinera

Acknowledgements

Curtis VillamizarDrew PerkinsSerge Melleg

Infinera Confidential and Proprietary | 2

Agenda

Where did we begin?Defining the problemsSolving the problems:g p

Lower CapExLower OpExF t i d liFaster service delivery

Examples


Where did we begin?

V i D Vid IVoice Data Video Internet

ADMADM ADM

ADM

ADM

Fiber


Three fundamental changes

IP ( i ) d IIP (private) and Internet

WDM

Transmission moves to IP Massive

IncreaseWDM WDM

WDM

WDMmoves to“all-optical” Convergence Increase

In Demand

Fiber


Implications for IP and Optical Compatibility

System vendors move to all optical architectures

WDM and IP moved further apart than

Sell off component divisions

pever before

Sell off component divisions

Component companyOptical systems

vendors

p p yComponent companyComponent company


Component company

Defining The Problems

Need to drive out CapExSimplify layers?Remove equipment?

N d t d i t O ENeed to drive out OpExIP and optical have different skill setsMust reduce the operational burden as new serviceMust reduce the operational burden as new service demands escalate?

Improve service delivery timep yWhy do I have to wait between 6 and 20 weeks just to get a transponder card?Too many different transponder types!!!


Too many different transponder types!!!

Lowering CapExg p


Cost Issues in IPoWDM Networks

1. High cost of IP router ports


Industry Data Points

80%

100% Significant difference between IP and transport equipment costs

20%

40%

60%costsUp to 5x differential between router & transport DWDM opticsOpportunity for greatest CapEx

0%

20%

640G Core Router (no lineinterface cards)

800G DWDM Terminal (notransponder)

Opportunity for greatest CapEx savings:

Cap or reduce router scalingCap or reduce number of router

t i dports requiredDrive functionality into the DWDM transport layer

Focus should be on minimizing80%

100%

120%

t per

Gb/

s

Focus should be on minimizing total network cost……optimizing between IP and transport layers20%

40%

60%

Rel

ativ

e co

st


0%40G SR POS

(router)40G POSDWDM(router)

10G SR POS(router)

10G DWDMTransponder

(<500km)

10G DWDMTransponder

(1500km)


1. High cost of IP router ports2. High cost of IP router ports


Network Cost vs. Interface Type

16%

18%

20%

80%

90%

100%

Volu

me

10GbE

OC-768 POS

10%

12%

14%

16%

50%

60%

70%

80%

ost/T

raffi

c V

OC-192 POS

Mixed OC-192/768 POS

2%

4%

6%

8%

10%

20%

30%

40%

P N

etw

ork

C

0%0%

IP Traffic Volume (Tb/s)

IP

High cost of Layer 3 POS router ports Historically lower cost points for Ethernet interfaces & switchesCost savings from use of converged Layer 2/3 switches (“Ethernet


Cost savings from use of converged Layer 2/3 switches ( Ethernet router”)


1. High cost of IP router ports2. High cost of IP router ports3. High cost of IP router portsg p


IP Network ArchitecturePresent Mode of Operation

IP core links (router trunks)IP core links (router trunks) primarily connected between adjacent router-adjacent routerIP core links carried overIP core links carried over dedicated wavelengths on WDM networkLittle/no router bypass (and thus little pass through trafficthus little pass-through traffic in WDM layer)End-end IP demands pass through multiple router hops

C i iConsume routing capacity for pass-through demands

Increasing inefficiency & cost as traffic volume scales


IP Network ArchitectureFuture Mode of Operation

As IP traffic volume grows….

Service demand

Minimize end-end IP demands transiting through intermediate router hopsIncrease number of direct

t t t li krouter-to-router core links (router trunks)

Router “bypass” for end-end demands between nodes

Traffic offloaded from three pairs of router ports


Network Cost vs. IP Bypass (10GbE)

Relative IP Network Costs (10GbE Ports) Relative WDM Network Costs (10GbE Ports)( )

0.298Tb/s

0.849Tb/s

( )

0.298Tb/s

0.849Tb/s

100%

90%

95%

100%

2.384Tb/s

6.75Tb/s

19 072Tb/s

2.384Tb/s

6.75Tb/s

90%

95%

80%

85%

90%

19.072Tb/s

38.145Tb/s

19.072Tb/s

38.145Tb/s

85%0 10 20 30 40 50 60 70 80

70%

75%

0 10 20 30 40 50 60 70 80

Number of IP Bypass Links Number of IP Bypass Links

Source: “Network Cost Savings from Router Bypass in IP over WDM Core Networks”Serge Melle Drew Perkins and Curtis Villamizar


Serge Melle, Drew Perkins and Curtis Villamizar

http://www.infinera.com/technology/techpapers.html

Lowering OpExg p


Re-unite IP and Optical

Make optical more compatible with IP


Optical Network Staff IP Network StaffNetwork Staff

Re-unite IP and Optical: How?

Put “digital” back into the optical network

Hide the “physics” from the network designerp y gRemove the cumulative problems of optics

Loss, Chromatic dispersion, PMD, Amp balancing

Put back “point and click” provisioningPut back digital PM and OAMEnable GMPLS to reach its full potential

Without the crippling cost of external cross-connects


Faster Service Deliveryy


It takes a long time to roll out a major optical transmission j pnetwork…

…or does it?


Forecasting capacity growth…

…is one of the biggest problems for the network designer

It takes my optical supplier X months to

My traffic forecasts have to be pp

deliver transponders absolutely accurate!

With dozens of different transponders and muxponders how can I keep stocks?


muxponders, how can I keep stocks?

Just-In-TAM™

These companies can offer the fastest turn-up of high-speed bandwidth in the industry

1. Your Infinera network offers 100G capacity with each DLM.2. Customer order comes in. Pre-provision and test if desired.

speed bandwidth in the industry

3. Order two Tributary Adapter Modules, one for each end point.4. TAMs arrive within 10 days of order.5. Install TAMs, activate, and test.5. Install TAMs, activate, and test.6. Connect to customer…. Start billing!

Service Order:10G wave


10G wave

Proving the concept…

Level3:10GbE LAN PHY10G in 10 days Interoute

10G in 10 DaysXO:

10G in 10 Days“We've pretty much built a national network in eight weeks since signing the contractin eight weeks since signing the contract, and we can increase capacity pretty much at the touch of a button. It has taken the guesswork out of the optical network We

Cox: Carphone Warehouse:

guesswork out of the optical network. We often get last-minute demand from the sales teams, and you need a technology partner that can help meet that demand….”


Cox:Owned backbone

Carphone Warehouse:Owned backbone

p- Paul Jackson, Head of Transmission

Solving The Problems

Driving out CapExOptimize router ports vs traffic demandResult: cost-optimize overall network

N d t d i t O ENeed to drive out OpExMake optical more compatible with IPPut the “digital” back into the optical network:Put the digital back into the optical network:

Digital design, digital service provisioning, digital performance monitoring

Improve service delivery timeRapid network deploymentT l t t f t i d d


Tolerant to unforecast service demands

Thank YouThank You

Geoff Bennett

[email protected]


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