Network Redundancy and Link Aggregation are essential features of managed industrial switches eliminates this single point of failure by providing alternate communication paths that activate automatically when a fault occurs. In industrial automation, downtime isn't just. Which Industrial Ethernet switches can be operated as redundancy manager and standby master in a ring? This entry shows which Industrial Ethernet switches can be used in ring topologies with media redundancy and support the redundancy manager and standby master functions. However, these networks face myriad challenges such as data loss, network latency, equipment failure, etc., which can lead to delays. Power redundancy allows a network device to connect to two power sources simultaneously. This design is particularly common in industrial Ethernet switches used in mission-critical networks. In industrial scenarios such as smart manufacturing, rail transit, and energy and power, a single fiber break or switch failure can halt an entire production line, resulting in losses of up to hundreds of thousands of yuan per hour. In industrial environments, network downtime frequently results in costly delays, production losses, and even potential danger to employees.