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LSDB (LinkState Database) synchronization method and system in OSPF (Open Shortest Path First)

A technology of synchronization system and compression method, which is applied in the field of network communication, can solve the problem of low efficiency of database synchronization, achieve the effect of reducing data volume, accelerating speed, and reducing the number of Update messages

Inactive Publication Date: 2015-03-11
PHICOMM (SHANGHAI) CO LTD
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Problems solved by technology

[0004] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of LSDB synchronous method and system in OSPF, be used to solve the low problem of LSDB (LinkState Database, link state database) synchronous efficiency in the prior art

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  • LSDB (LinkState Database) synchronization method and system in OSPF (Open Shortest Path First)
  • LSDB (LinkState Database) synchronization method and system in OSPF (Open Shortest Path First)
  • LSDB (LinkState Database) synchronization method and system in OSPF (Open Shortest Path First)

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Embodiment Construction

[0027] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...

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Abstract

The invention provides an LSDB (LinkState Database) synchronization method and system in OSPF (Open Shortest Path First). The LSDB synchronization method in the OSPF comprises the following steps: negotiating and determining to adopt a preset compression mode on LSA (LinkState Advertisement) data needing to be transmitted for synchronization; compressing the LSA data needing to be transmitted according to the compression mode, and encapsulating the LSA data in an LSU (LinkState Update) message for transmission; and receiving the LSU message, and decompressing the LSA data in the LSU message. The LSDB synchronization system in the OSPF comprises a compression confirmation module and a compressing and transmitting module, wherein the compression confirmation module is used for negotiating and determining to adopt the preset compression mode on the LSA data needing to be transmitted for synchronization; and the compressing and transmitting module is used for compressing the LSA data needing to be transmitted according to the compression mode and encapsulating the LSA data in the LSU message for transmission. According to the technical scheme disclosed by the invention, the LSA data is compressed, the amount of data needing to be transmitted for LSDB synchronization can be greatly reduced, and the LSDB synchronization speed is increased. Meanwhile, the system can be completely compatible with conventional equipment.

Description

technical field [0001] The invention relates to a network communication technology, in particular to an LSDB synchronization method and system in OSPF. Background technique [0002] The existing LSDB (LinkState Database, Link State Database) synchronization is that the two devices first perform LSA (LinkState Advertisement, Link State Broadcast) summary synchronization through the DD (Database Description) message, and the DD message describes each link in the local LSDB. Summary information of the LSA. Then, by comparing the difference between the local LSA and the remote LSA, it determines which LSAs are needed, and requests an LS Req (LinkState Request) message. After receiving the request, it sends the corresponding LSA to the opposite end. The existing implementation is to encapsulate the LSA in the LS Update (LinkState Update) message for sending, and then send the LS Ack (LinkState Acknowledge) for confirmation after receiving it locally. Among them, the LS Update m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06
CPCH04L67/1095H04L69/04
Inventor 郭俊敏
Owner PHICOMM (SHANGHAI) CO LTD
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