Method and system for controlling recovery of planar node after restarting in automatic switched optical network
A recovery method and automatic switching technology, applied in the field of optical communication, can solve the problems of reducing network interconnection interoperability, business connection deletion, and inability to completely restore the state before restart, so as to achieve the effect of ensuring interconnection interoperability
Inactive Publication Date: 2014-04-30
ZTE CORP
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[0005] The purpose of the present invention is to provide a method and system for recovering control plane nodes in an automatic switched optical network after restarting, aiming at solving the problems in the prior art that the recovery of nodes after restarting will lead to the deletion of service connections or the inability to fully restore the problems before restarting. state, or the recovery process will degrade the interconnectivity of the network
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] In the embodiment of the present invention, the path state block and reserved state block related to each node are backed up. When a node restarts, the adjacent normal node or the first recovery node sends the relevant information after establishing hello communication with the restarted node. Path (Path) recovery message, restart the node to retrieve the backup path state block and reserved state block and trigger their switching, thereby restoring the refresh process between nodes; restore the refresh process segment by segment, when the refresh process between all nodes resumes, the entire...
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The invention is applicable to the field of automatic switched optical networks, and provides a method and a system for controlling recovery of a planar node after restarting in the automatic switched optical network. The method comprises the following steps that: each node backs up a related path state block and a reservation state block when connection and service are normal; when a node is restarted, a neighboring normal node or previously recovered node establishes hello communication with the restarted node and then transmits a recovery message to the restarted node; and the restarted node retrieves the related path state block and the reservation state block according to the received recovery message, triggers the blocks to switch the blocks and recovers the updating process between the restarted node and the node for transmitting the recovery message. Thus, the signaling state of the restarted node can be completely and quickly recovered while the interconnection and intercommunication of the network equipment is ensured and service connection is not deleted.
Description
technical field [0001] The invention relates to the field of optical communication, in particular to a recovery method and system after a restart of a control plane node in an automatic switching optical network. Background technique [0002] In an Automatic Switched Optical Network (ASON for short), there is a basic principle: the failure of the control plane cannot affect the transmission plane, resulting in service interruption or instantaneous interruption. In the ASON network, the failure of the control plane can be divided into two situations: one is that the network element node fails, such as the node restarts, and the control information is lost, but the underlying services still exist; the other situation is that the control channel fails, If the link between the two nodes connecting the control plane is disconnected, the communication is interrupted. When the network element node of the control plane fails, such as after the node is restarted, the original contro...
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IPC IPC(8): H04B10/032H04Q11/00
Inventor 刘志伟
Owner ZTE CORP