Link switching method, link redundancy backup network, and computer-readable storage medium

Abstract

The invention discloses a link switching method, a link redundancy backup network and a computer-readable storage medium. A link switching method is applied to a redundant backup network including at least two ring networks, including: a first ring network Each node in the inter-ring redundant backup port in the blocked state sends an inter-ring interaction notification message to the inter-ring redundant backup port periodically. When any node in the second ring network determines that the When a ring port in the network is disconnected, the first inter-ring interaction notification response message is sent, and when at least one node in the first ring network receives the first inter-ring interaction notification response message, the ring Select one of the redundant backup ports among the ports to set it as the forwarding state. The link switching method, link redundancy backup network and computer-readable storage medium disclosed by the invention can avoid the problem of two links that cannot communicate with each other in the ring due to the failure of two ring ports caused by nodes in the ring network.

Description

Technical field [0001] Embodiments of the present invention relate to network techniques, and more particularly to a link switching method, a link redundant backup network, and a computer readable storage medium. Background technique [0002] In industrial networks, in order to improve the reliability of data transmission, a loop topology is usually used to provide redundant protection for data transmission. When using a ring topology, the corresponding ring control mechanism must be used to avoid generating a broadcast storm in the network, and can switch to the standby link to the standby link in the ring network in the loop network to ensure normal transmission of data packets. . [0003] For example, Distributed Redundancy Protocol (DRP) is a dedicated loop protection protocol, which regular topology detection through a device in the loop network or the active news of all devices to obtain a network topology transformation. . However, in the existing DRP protocol, when a redu...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a link switching method, a link redundancy backup network and a computer-readable storage medium, which can avoid the problem of two links that cannot communicate with each other in the ring due to the failure of two ring ports caused by nodes in the ring network

Images