FOAN-Network Strategies to Enhance Survivability and Resilience of the FOAN

The availability and survivability of FOANFuture Optical Access Network (FOAN) and optical sensor networks (OSNOptical Sensor Networks (OSN)) will be jeopardized by software and/or hardware failures, resulting in network outages and increasing subscriber dissatisfaction. Additionally, it erodes the reputation of service providers and network operators, eroding the organizations’ long-term profitability. Natural disasters such as heavy rain, flooding, landslides, storms, and an extremely foggy environment can all result in network failure. Network inaccessibility can also occur as a result of network element failure, software failure, or a man-made situation such as a cyberattack or network outage due to a power failure. Enhancing resilience capabilities and thus minimizing network outages and increasing network availability will be critical challenges for FOANFuture Optical Access Network (FOAN) network operators. In a truly multi-channel, multi-vendor, and multi-service environment, ensuring a common protocol to improve network availability becomes even more challenging. Protection mechanisms for various sections of FOANFuture Optical Access Network (FOAN), including CAN adapters, OLT, feeder fiber, and the ODN network, as well as end-to-end protection in the event of natural disasters and man-made disasters, will be presented and discussed in order to ensure the availability of FOANFuture Optical Access Network (FOAN). This chapter will describe the FOANFuture Optical Access Network (FOAN) software and hardware sections’ survivability mechanisms. Mechanisms for ensuring the survivability and availability of OWOptical Wireless (OW)-FSOFree Space Optics (FSO) networks under extreme adverse environmental conditions will be addressed to ensure subscribers can access and use FTTXFiber-to-the-X (FTTX), 5G, 6G, IoTInternet-of-Things (IoT), and Smart City applications and services. The fiber bus protection scheme, self-healing architectures, 1:1 and 1:N protection paths, photonic-millimeter-wave bridge mechanism, P-cyclePreconfigured protection cycle (P-cycle) scheme, pre-configured k&k scheme, multipath and end-to-end protection schemes, and restoration mechanisms will all be discussed for the FOANFuture Optical Access Network (FOAN) and OWOptical Wireless (OW)-FSOFree Space Optics (FSO) networks. This chapter will discuss the incorporation and use of state-of-the-art intelligent test and measurement equipment, visualizers, and analyzers to monitor and ensure FOAN'sFuture Optical Access Network (FOAN) 24 × 7 availability and profitability.