Data protection method of dual-connection network

A dual-homing connection and data protection technology, applied in the field of communication, to improve the anti-fault ability, prevent data duplication and broadcast storm effect

CN101626335AInactive Publication Date: 2010-01-13无棣鑫岳化工集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-01-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a data protection method of a dual-connection network when a first data node and an auxiliary control node are in dual-connection with a second data node through a control node. The data protection method comprises the following steps that: the control node blocks a port directly connected with a protection link when the protection link and a non-protection link are in a serviceable state; and the control node opens the port directly connected with the protection link when the non-protection link fails and the protection link is in the serviceable state. The data protection method of the dual-connection network of the invention improves the anti-failure ability of the dual-connection network, enables the switch speed to satisfy the requirement of a carrier Ethernet, prevents failures such as the data duplication, broadcast storm, and the like of the dual-connection network, and can be used in a plurality of network structures.
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Description

technical field

[0001] The invention relates to the communication field, in particular to a data protection method for a dual-homing connection network. Background technique

[0002] In the actual application of the network, the networking structure of dual-homing connection is widely used to improve the reliability of the network. With the development of the network towards the direction of multi-service bearing, especially some services have higher and higher requirements on the reliability and real-time performance of the network, a highly reliable dual-homing connection network protection method is required in the network, and it can meet the switching requirements. High real-time requirements with a convergence time of less than 50 milliseconds.

[0003] figure 1 is the network topology diagram of Ethernet dual-homing connection; figure 1 As shown, the nodes S1, S2 and S3 are Ethernet switches or network devices with Ethernet switching functions, forming an Ethernet ...

Examples

Embodiment Construction

[0036] The data protection method of the highly reliable dual-homing connection network can realize the following functions:

[0037] When the links of the dual-homing network are all intact, by blocking a certain port, the communication of the dual-homing network has one and only one transmission path, and the link corresponding to the blocked port is used as the backup link;

[0038] When the link of the dual-homing network fails, if the faulty link is not the above-mentioned backup link, open the above-mentioned blocked port and enable the backup link, so that the communication of the dual-homing network can be transmitted through the above-mentioned port to form a new path. allowing communication to be restored.

[0039] For example, when the data protection method of the above-mentioned dual-homing connection network is applied to the network shown in FIG. The communication path between and network A is:

[0040] Network B Node S3 Node S1 R1 Network A;

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