Intersect looped network, node and protecting method of random topology intersect looped network

Abstract

The invention discloses a protection method for an arbitrarily topologized cross ring network, nodes and the cross ring network. The method comprises the steps that each ether ring network is respectively set into a respective layer ring declining vertically from the uppermost layer of ring in an arbitrarily topologized cross ring network formed through a plurality of ether ring networks being crossed; the position between two nodes on the edges corresponding to an arbitrary first ether ring network in the cross ring network is inspected for passages, a slave port is ensured to be in the unlocked status through the master nodes of an arbitrary ring of the first ether ring network and the rings in the lower layers if the inspection result is negative, wherein, when the nodes on the edges are adopted as virtual nodes which adopts the network composed of all the rings in the upper layers of the first ether ring network as the first ether ring network, the virtual nodes are connected intothe node where the port of the first ether ring network is positioned.

Description

technical field [0001] The invention relates to the Ethernet ring network technology, in particular to a method for protecting an intersecting ring network of an arbitrary topology, a node and an intersecting ring network. Background technique [0002] At present, the Ethernet ring network is gradually popularized and applied. figure 1 It is a schematic diagram of the structure of a single Ethernet ring network. see figure 1 , in a single Ethernet ring network, including a master node and multiple transmission nodes, the master node and each transmission node transmit business data on the Ethernet ring network to complete various business functions. [0003] Since the Ethernet ring network is a ring network structure, it is necessary to prevent loops, so as to avoid broadcast storms caused by unknown unicasts and broadcasts being circulated on the ring. At present, for a single Ethernet ring network, there are relatively mature technologies to avoid loops and ensure data ...

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