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Performance Monitoring in Photonic Networks

Performance Monitoring in Photonic Networks. John Drake Chromisys. Packet. SONET. Photons. SONET. Packet. Cross Connect. SONET Muxes. SONET Muxes. Cross Connect. DWDM. DWDM. Routers. Routers. Current Networking. Packet. Photons. Packet. ~. ~. ~. ~. ~. ~. ~. ~. ~. ~.

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Performance Monitoring in Photonic Networks

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  1. Performance Monitoring in Photonic Networks John Drake Chromisys

  2. Packet SONET Photons SONET Packet Cross Connect SONET Muxes SONET Muxes Cross Connect DWDM DWDM Routers Routers Current Networking Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  3. Packet Photons Packet ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Photonic Switch Photonic Switch Photonic Switch Routers Routers ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Photonic Networking Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  4. ~ ~ ~ ~ ~ ~ Photonic Network Model OXC OADM Router Router DWDM DWDM ATM switch ATM switch PXC PXC Router PXC Photonic Switch DWDM Dense Wavelength Division Multiplexer OADM Optical Add Drop Multiplexer Control Plane Flows Proprietary Signaling Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  5. Photonic Network Model Advantages • Supports Overlay Model and Peer Model • Overlay • Photonic Switch computes the path • Network-level abstraction • Peer • Router computes the path (The router has enough information about the characteristics of the optical devices/network) • Link-level abstraction Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  6. Challenges of Photonic Networks • Optical layer information not available • SONET • Is unaware of optics • Makes network opaque • Digital wrappers don’t offer a solution either • Provisioning, switching, management and monitoring functions need to move to optical domain Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  7. Proposed Optical Parameters • Dispersion (chromatic and Dispersion Mode) • Optical power level and signal-to-noise ratio (OSNR) • Bit rate • Q-Factor • Wavelength registration • Wavelength selective component drift • Optical cross talk • Optical power transients • Bit error rate • Jitter • Insertion loss Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  8. Control Plane • Control plane used to communicate, monitoring is done on the actual wavelength • Flows to be supported • Router - PXC • PXC – DWDM • PXC - PXC • DWDM systems can continue to use proprietary implementations ([de]mux – oamp – oadm) • Out-of-band on dedicated standard ITU channel Performance Monitoring in Photonic Networks in Support of MPL(amda)S

  9. For Further Study • Final List of optical parameters • Agreed techniques for measurements of optical parameters • Synthesis of optical parameters for link state database and network management • Interface between PXC and DWDM Performance Monitoring in Photonic Networks in Support of MPL(amda)S

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