Network device for providing redundancy in industrial network

The present disclosure describes a network device for providing redundancy in an industrial network. The network device comprises a first port group connected to a first network segment of the industrial network, and a switching module comprising a plurality of southbound ports, wherein at least one southbound port is connected to a corresponding terminal device. Each port group has a pair of redundant northbound ports connected to a linked redundant entity, the linked redundant entity having two or more interconnection ports, the interconnection ports being connectable to one or more southbound ports of the switching module based on a network topology, the method and the device are used for realizing redundant link between terminal equipment connected to a southbound port and a first network segment. 本公开描述了用于在工业网络中提供冗余的网络设备。网络设备包括连接到工业网络的第一网络段的第一端口组，以及包括多个南向端口的交换模块，其中至少一个南向端口连接到对应的终端设备。每个端口组具有连接到链接冗余实体的一对冗余北向端口，链接冗余实体具有两个或更多个互连端口，互连端口基于网络拓扑能够连接到交换模块的一个或多个南向端口，用于实现在连接到南向端口的终端设备与第一网络段之间的冗余链接。