Coherent OpticsWhy they don't just work in my switch.pdf

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1、Coherent Pluggable Optics promise the simplicity of pluggables for 80km+links,but often dont work when you plug them into your switch.Why not?What can you do?Coherent Optics Why Dont They Just Work in My Switch?Don Barnetson,VP Product,CredoCoherent Optics:Why Dont They Just Work In My Switch?EMEA D

2、eploymentsNETWORKINGZR,ZR+Pluggable Coherent Optics and Supporting EDFA amplifiers enable extended reach over single mode fiberZR 80kmZR+-500km+ZR/ZR+modules replace transpondersfor DCI and metro applications to 500kmDramatic reduction in cost and complexity Chassis-ModuleCoherent Pluggable Optics a

3、lso make excellent dark fiber testersWhat are Coherent Pluggable Optics?400G ZRQSFP-DD ModuleQSFP-DD EDFAAmplifierTransponderStandards Based ModulesQSFP,QSFP-DD,OSFPAll with standard AUI host interfacesHigher Power(Up to 32W)than grey opticsNew cooling form factors QSFP-DD Type 2A/2B;OSFP closed top

4、Additional Control Plane CMIS+C-CMIS Extensions+Vendor Specific CommandsAnother 32 pages of C-CMIS plus many Vendor Specific pagesCoherent Pluggable Optics EcosystemPower/CoolingLegacy switches designed for DR/FR optics;Coherent power 2x higherOften means leaving half of the ports unplugged or plugg

5、ing 400Gb ports with 100Gb opticsWith port costs of$300-$3,000 wasting radix is unaffordableSoftwareC-CMIS commands are new and not consistently implemented by every module makerC-CMIS drivers not fully implemented in many switch OSs(eg SONiC)Many module makers have proprietary commands needed to ac

6、cess functionalityNOS Module“Allow”ListNOSs typically maintain a list of qualified modules;only those modules workTesting+Licensing often required for Allow ListWhy Dont Coherent Pluggables Always Work?Decouple Coherent Pluggable Optics from host switch/routing platformPatch Panel for PluggablesLow