Integrating Optical and L2/L3 - Home | Internet2 SES, UAS, CV, etc. Trail Trace Identifier (TTI) Backward Defect Indication (BDI) Backward Error Indication (BEI) Bit-Interleaved Parity

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Integrating Optical and L2/L3

Why IPoDWDM Makes Sense

Kevin McGrattan

Consulting Systems Engineer

Joint Techs July 2012

20120718-mcgrattan-WhyIPoDWDM

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• Definition

• Some history and current situation

• What’s changed?

• Why IPoDWDM makes sense today?

• Summary

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Traditional Routing and Switching

+

ITU Grid Optics

+

OTN Framing

+

Platform Integration

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• External Device Integration

• Modem

• CSU/DSU

• M13 mux to channelized DS3

• DWDM Transponders 10G

100G

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• IPoDWDM

Expensive (dedicated) IPoDWDM line cards

mod (4) interface requirement for 10G

Lack of flexibility (always an IPoDWDM port)

• Earlier generation pluggable optics

Fixed wavelengths

Optical performance (or lack of)

Manageability (lack of integration)

• Organization and Behavioral Issues

Separate transport and routing groups

…and management tools

…and operational models

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• Improved pluggable optics

• Full C-band tunable optics

• ITU-T G.709 Encapsulation

Performance Monitoring

Coding gain with Forward Error Correction

OOB communication channel with GCC

• Platform integration

Optical layer visibility

Integrated management

Performance monitoring

Traffic engineering with fast re-route

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• Digital Optical Monitoring (DOM)

• Fixed ITU grid XENPAK

• Fixed ITU grid XFP (better size, power, performance)

• Full C-band tunable ITU grid XFP

• Fixed ITU grid SFP+

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Min Max

XENPAK Pout -1.0 3.0 dBm

Pin (noise limited) -17.0 -7.0 dB

Dispersion Tolerance -500 1600 ps/nm

XFP Pout -1.0 3.0 dBm

Pin (noise limited) -18.0 -7.0 dB

Dispersion Tolerance -500 1600 ps/nm

Transponder Pout 3.0 4.0 dBm

Pin (noise limited) -20.0 -8.0 dB

Dispersion Tolerance -1200 1200 ps/nm

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• Performance management

• Performance improvement

OTUk OH

ODUk OH OPUk OH

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• Optical

Transmit power (opt), receive power (opr), laser bias current (lbr)

• Performance Monitoring

ES, SES, UAS, CV, etc.

Trail Trace Identifier (TTI)

Backward Defect Indication (BDI)

Backward Error Indication (BEI)

Bit-Interleaved Parity (BIP-8)

• Forward Error Correction

Corrected bits

Uncorrectable words

• …plus loopbacks

*non-exhaustive list

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• Capex savings

Lower entry cost to add capacity

Lower sparing costs

No dedicated IPoDWDM cards or transponders to purchase

• Opex savings

Improved alarm correlation

Improved reliability (fewer components and jumpers)

Faster troubleshooting

Faster MTTR

• Optical + IP integration

• End to end SDN Potential

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Optics Type L2/L3 Optics

Power

Transponder

Power

Power

(total)

Optical

Shelf

Slots

XENPAK 8W 0 8W 0

XFP 3.5W 0 3.5W 0

10G Transponder 1.5W 50W 51.5W 1

40G Muxponder 1.5W 143W 144.5W 0.5

(4 channels) (36.1W)

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Reactive Protection Proactive Protection

DWDM

Router

Interface

working

route

protect

route

fail-

over

FEC Limit

Pre

-FE

C B

it E

rro

rs

Rou

ter

Bit E

rro

rs

Time

protect

route

working

route

FEC Limit

Protection Trigger

Pre

-FE

C B

it E

rro

rs

Rou

ter

Bit E

rro

rs

Time

DWDM / ROADM DWDM / ROADM

Hitless

Switch LOF

Gray

Port

On

Router

Trigger

Enabled

Transponder

Gray

Port

On

Router

Transponder

FEC

FEC FEC

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Secure Management

Channel (PPC)

Router Management

• L2/L3 Interface Information

• Routing Protocols

• IP Addressing

• Security

DWDM Management

• L1 Interface Information

• Wavelength Usage

• Power Levels and Thresholds

• Performance Monitoring

• Retains existing operational model

• Respects boundaries between packet / optical administrative groups

15454 MSTP ASR9000

Cisco Transport Controller

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WSON

UNI-C

MSTP

ASR9000

UNI-N

GMPLS

UNI

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• SFP+ Optics

Fixed wavelength only?

• 40G optics support

Including G.709 with FEC and PM

• 100G?

• ONF New Transport Working Group

To discuss other transport technologies, such as optical, circuit, and wireless

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• A 10G connection is still quite useful

• Utilize vacant channel capacity

• Simplify intra-POP x-connects and visibility

• Recurring operational savings (power and space)

• (Relatively) low cost DWDM pluggable optics

• Tunable DWDM optics availability

• G.709 encapsulation (FEC)

• Tight integration with router

• Improved OA&M model (SONET like benefits)

• Any service, any wavelength, any port

• Envision programing IPoDWDM via an API in an SDN environment!

Thank you.