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Bidirectional forwarding detection method

A bidirectional forwarding detection and forwarding flow technology, applied in the field of switches, can solve problems such as complex configuration work, affecting normal network service transmission, failure to detect data link failures in time, and achieve the effect of ensuring timeliness

Active Publication Date: 2016-01-06
湖州帷幄知识产权运营有限公司
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Problems solved by technology

[0004] On the other hand, in the traditional forwarding detection network protocol (BidirectionalForwardingDetection, BFD), it may be necessary to negotiate the sending and receiving rates between the source and the destination. Since the negotiation operation is distributed, if the constructed network is very large, Then the configuration of the response will be very complicated
At the same time, if the rate negotiated by both parties is too high, the sending and receiving of bidirectional detection packets (BFD packets) will affect the transmission of normal network services; breakdown on the road

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0050] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0052]In a preferred embodiment of the present invention, based on the above-mentioned problems in the prior art...

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Abstract

The invention discloses a bidirectional forwarding detection method, and belongs to the technical field of switches. The method comprises that S1) a switch receives a data message which is not matched by a forwarding flow table, and uploads a data message flow associated with the data message to a flow controller; S2) the flow controller extracts characteristic information from the data message flow, and processes the characteristic information by combining preset forwarding information to form a new data message forwarding path; and S3) the flow controller issues a bidirectional forwarding detection message to both source-end and target-end switches, which are associated with the data message forwarding path, to trigger corresponding bidirectional forwarding detection. The method has the advantages that bidirectional forwarding detection can be carried out in any data transmission channel, the data transmission path can be re-planned in a unified way, normal data transmission is not influenced, and link faults can be detected timely.

Description

technical field [0001] The invention relates to the technical field of switches, in particular to a bidirectional forwarding detection method. Background technique [0002] Today's networks require fast detection of communication failures between adjacent systems so that alternate paths can be established faster or switched to other links in the event of a failure. Currently, many network hardware or software cannot provide the above functions, such as Ethernet. There are also some network hardware or software that cannot implement the path detection function, such as forwarding engines or interfaces. [0003] The current network generally adopts a slow Hello (handshake) mechanism, especially in routing protocols, without the help of hardware, the detection time will be very long, so a large amount of data will be lost during the fault detection response time. And for nodes that do not allow routing protocols, no method for detecting their link status has been found in the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/24
Inventor 翟跃
Owner 湖州帷幄知识产权运营有限公司
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