3 results about "Ethernet Ring Protection Switching" patented technology

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for communication resilience in a Ring Network Topology. In some aspects, a top Ethernet node, implemented in a Ring Network Topology (“RNT”) that includes multiple additional Ethernet nodes, receives downstream traffic having a virtual local area network (“VLAN”) service address. The top Ethernet node can determine that the downstream traffic is destined for a given device serviced by a given Ethernet node, from among the multiple additional Ethernet nodes, that terminates a given Ethernet Ring Protection Switching (“ELPS”) group. The top Ethernet node can determine a given VLAN subnetwork that has been mapped to the given ELPS group, and transmit the downstream traffic through the RNT using the given VLAN subnetwork.

A method and device for determining a topology change source, and a communication system belong to the technical field of network. After a first network device in an Ethernet ring protection switching (ERPS) network receives a topology change message sent by a second network device in the ERPS network, the topology change source is determined according to trace information carried by the topology change message. The application can realize fast tracing of the topology change source.

The invention provides a tug network system and a data processing method, and relates to the technical field of tugs. The tug network system comprises a main server, a plurality of switches and a plurality of ship subsystem devices, the plurality of switches form a ring network based on an Ethernet ring protection switching protocol, a first switch in the plurality of switches is in communication connection with the main server, and a second switch in the plurality of switches is in communication connection with the ship subsystem devices. At least part of target switches in the plurality of switches are in communication connection with the ship subsystem equipment; each target switch is used for receiving the ship subsystem real-time data collected and sent by the corresponding ship subsystem equipment, and forwarding the ship subsystem real-time data to the first switch along an unblocked physical shortest path in the ring network; the first switch forwards the real-time data of the ship subsystem to the main server; and the main server is used for generating a first auxiliary driving instruction according to the real-time data of the ship subsystem, so that ring network redundancy can be realized, the communication reliability can be improved, the hardware modification cost can be reduced, and the expansibility can be improved.