Automatically Switched Optical Network (ASON) is a concept for the evolution of transport networks which allows for dynamic policy-driven control of an optical or SDH network based on signaling between a user and components of the network. Its aim is to automate the resource and connection. Optical-layer ASON, also known as WSON, grooms OCh wavelength services through wavelength selective switching (WSS). Dynamic rerouting is based on dynamic optical cross-connections. It's a traffic protection and restoration, mechanism used in high capacity networks. Traditionally, it was necessary to configure cross-connections in the Network Elements (such as an optical switch) to create a new. **ASON (Automatically Switched Optical Network)** in an **OTN (Optical Transport Network)** is a control plane technology that enables dynamic, intelligent, and automated provisioning, management, and restoration of optical connections.
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