Post on 16-Mar-2018
Next Generation IP over WDMNetwork ArchitecturesGeoff BennettDirector of Product Marketing, Infinera
Acknowledgements
Curtis VillamizarDrew PerkinsSerge Melleg
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Agenda
Where did we begin?Defining the problemsSolving the problems:g p
Lower CapExLower OpExF t i d liFaster service delivery
Examples
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Where did we begin?
V i D Vid IVoice Data Video Internet
ADMADM ADM
ADM
ADM
Fiber
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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
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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
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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!!!
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Too many different transponder types!!!
Cost Issues in IPoWDM Networks
1. High cost of IP router ports
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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
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0%40G SR POS
(router)40G POSDWDM(router)
10G SR POS(router)
10G DWDMTransponder
(<500km)
10G DWDMTransponder
(1500km)
Cost Issues in IPoWDM Networks
1. High cost of IP router ports2. High cost of IP router ports
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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
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Cost savings from use of converged Layer 2/3 switches ( Ethernet router”)
Cost Issues in IPoWDM Networks
1. High cost of IP router ports2. High cost of IP router ports3. High cost of IP router portsg p
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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
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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
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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
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Serge Melle, Drew Perkins and Curtis Villamizar
http://www.infinera.com/technology/techpapers.html
Re-unite IP and Optical
Make optical more compatible with IP
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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
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It takes a long time to roll out a major optical transmission j pnetwork…
…or does it?
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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?
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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
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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….”
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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
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Tolerant to unforecast service demands