What's the difference between optical transport network and traditional Ethernet transport network?

1, using different technologies:

SDH: It is a technology that provides corresponding information structure by transmitting digital signals at different rates.

MSTP: It is a more advanced SDH, which is based on SDH to transmit Ethernet.

OTN: It uses wavelength division technology.

PTN: Packet switching technology is used.

2. Different applications:

Sdh: IP service, ATM service.

MSTP: A variety of bandwidth services.

OTN: Provide network protection and improve security.

PTN: Suitable for all kinds of coarse and fine-grained services and end-to-end networking capabilities.

3, the principle is different:

SDH: Mapping, Positioning and Multiplexing.

MSTP: The traditional SDH multiplexer, digital cross linker (DXC), WDM terminal, network layer 2 switches and lP edge router are integrated into one network device for unified control and management.

OTN: Realize the transmission, multiplexing, routing and monitoring of service signals in the optical domain, and ensure its performance index and survivability.

PTN: Set a layer between the IP service and the underlying optical transmission medium. It is designed for the burst of packet service traffic and the requirement of statistical multiplexing transmission, with packet service as the core and supporting multi-service provision.

Contact person:

Are all optical transmission technologies.

Baidu encyclopedia -SDH

Baidu encyclopedia -MSTP

Baidu encyclopedia-optical transmission network

Baidu encyclopedia -PTN