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A link state information processing method and device

A technology of link status information and information processing method, applied in the field of network communication, can solve the problems of data traffic fluctuation, data packets cannot reach some network nodes, network shock, etc., to improve accuracy and stability, avoid network The effect of a brief interruption in traffic

Active Publication Date: 2017-03-15
NEW H3C TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the link status information in the LSDB changes, the intermediate system needs to recalculate the route and change the forwarding path of the data packet. Frequent changes in the LSDB will cause data traffic to fluctuate and impact the network.
If the link state information in the LSDB is inaccurate, data packets may fail to reach some network nodes

Method used

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  • A link state information processing method and device
  • A link state information processing method and device
  • A link state information processing method and device

Examples

Experimental program
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Embodiment 1

[0041] For the process on intermediate system A, please refer to figure 2 , in step SA210, when the change of the non-IP prefix information causes the LSP fragment to be regenerated, the receiving party is notified to suspend the processing of the LSP fragment. When the LSP fragments are regenerated on the intermediate system A, and the reason for regenerating the LSP fragments is the change of the non-IP prefix information, the intermediate system B is notified to suspend the processing of the LSP fragments.

[0042] In an optional implementation manner, the intermediate system A may implement step SA210 in the following manner: regenerate LSP fragments; if all local IP prefix information has not changed, and non-IP prefix information has changed, notify The receiver suspends processing LSP fragments. After the LSP fragments are regenerated, the intermediate system A compares the local information used to regenerate the LSP this time with the local information used when the...

Embodiment 2

[0055] In the second embodiment, the intermediate system A notifies the intermediate system B to suspend the processing of the LSP fragment by setting a flag in the LSP fragment (such as setting the reserved position of the ATT field to 1), and adopts the Hello message carrying the preset update notification field. The message (such as adding a TLV field in the Hello message, and updating the LSDB in the agreed format) informs the intermediate system B to process all LSP fragments received this time.

[0056] For the process on intermediate system A, please refer to Figure 4 . After detecting that the LSP fragments of the local IS system need to be regenerated, the intermediate system A regenerates the LSP fragments.

[0057] The intermediate system A judges whether all the local IP prefix information has not changed and the non-IP prefix information has changed, if not, sends the LSP fragment that needs to be updated according to the normal process; if yes, after setting th...

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Abstract

The present invention provides a method for processing link state information, which is applied to an intermediate system, including: when the change of non-IP prefix information causes LSP fragmentation to be regenerated, notify the receiver to suspend processing LSP fragmentation; send all regenerated LSP Fragmentation; notify the receiver to process all LSP fragments. Through the technical solution of the present invention, the problem that the IS-IS route of the LSP receiver is deleted from the routing table due to LSP regeneration and then added to the routing table causes short interruption of data flow is avoided.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a link state information processing method and device. Background technique [0002] IS-IS (Intermediate System to Intermediate System Intra-Domain RoutingExchange Protocol, intermediate system to intermediate system intra-domain routing information exchange protocol), as an internal gateway protocol, is widely used due to its good scalability and fast convergence speed. in various large networks. Among them, the intermediate system (IS) is the basic unit for generating routes and disseminating routing information in the IS-IS protocol, which is equivalent to a router in TCP / IP. [0003] IS-IS is a routing protocol based on the link state. The working mechanism is that the LSP (Link State Protocol Data Unit, Link State Protocol Data Unit) that describes the link state is diffused between the intermediate systems, and the same link state protocol data unit i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/751H04L45/02
Inventor 周贵鲁陆亦雄
Owner NEW H3C TECH CO LTD
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