OTN, everybody now talking OTN, instead of CWDM/DWDM, what exactly OTN was, here we collect some document and information, to show you some basic fundamental about OTN.
History of transport network
ITU-T OTN Definition
Firstly What is OTN?
- OTN is an industry-standard optical transport protocol
- OTN is intended to promote network evolution beyond SONET/SDH
Eliminates traditional TDM transport complexity and related costs
Removes the gaps/bottlenecks specific to emergent packet and wavelength transport
- OTN offers tremendous CAPEX/OPEX benefits to carriers
Reducing CAPEX via common transport framework
Lowers cost-per-bit via technology simplification and transport commonality
Integrates physical and optical layer processing across Network Elements (NEs)
Consequently reduces the number of NEs across the network.
Reducing OPEX through network simplification and integration
Less equipment = less Operations Administration and Operations, Administration, Provisioning (OAM&P)
Technology offers simplified fault isolation and improved trouble-shooting.
How Does OTN Technology Benefit Today’s Carriers?
- COMMONALITY – via wavelength-based optical transport
Payload equivalency for SONET/SDH, Ethernet, and/or DWDM transport
Common network management platform support
Permits ‘endpoint-only’ management by avoiding termination at every midpoint.
- TRANSPARENCY – across the optical domain
Integrates physical and optical layers for seamless networking
Promotes integration across disparate networks via common transport framework
- EFFICIENCY – for overall cost reduction and network monetization
Simplified multiplexing/demultiplexing of sub-rate traffic
Reduction in signal overhead requirements relative to payload.
- EVOLUTION – to emerging technologies
Provides simple transition to 40G and 100G transmission speeds
Purpose-built for Packet Optical and Wavelength-based transport
Integrated, standardized Forward Error Correction (FEC) for extended optical reach
Ideal for comprehensive Control-Plane network implementation.
How Does OTN Technology Expand Carrier Applications?
- Optical Wavelength Services:
Offers customers full end-to-end transparency
Protocol-independent transmission of SONET/SDH, Ethernet, IP, and/or Lambdas
Simplifies end-customer network management
Ideal for Carrier’s carrier applications, wholesale bandwidth services, etc.
- Differentiated Services:
New Service Level Agreement (SLA) options
-Via OTN Control-Plane mesh
New Integrated multi-domain operations
– E.g. Multi-Region networking to integrate Physical, Transport, and Data layers under a common network management model for customer control
Bandwidth on Demand Services
-Fast provisioning via end to end OTN
–To be continued..
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