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Link performance detection method and device based on BFD (Bidirectional Forwarding Detection)

A link performance and detection method technology, applied in the field of communication, can solve problems such as the inability to provide link performance detection of BFD routing and switching equipment

Inactive Publication Date: 2011-08-17
NEW H3C TECH CO LTD
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Problems solved by technology

[0007] The present invention provides a BFD-based link performance detection method and its equipment to solve the problem that the existing BFD technology cannot provide link performance detection between two BFD routing and switching devices

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  • Link performance detection method and device based on BFD (Bidirectional Forwarding Detection)
  • Link performance detection method and device based on BFD (Bidirectional Forwarding Detection)
  • Link performance detection method and device based on BFD (Bidirectional Forwarding Detection)

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Embodiment Construction

[0075] In view of the above-mentioned problems in the prior art, the embodiment of the present invention implements link performance detection between devices at both ends of a BFD session by extending the BFD protocol message, and further performs QoS control according to the link performance detection result.

[0076] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0077] see figure 1 , is a schematic diagram of a BFD-based link performance detection and QoS control flow provided by an embodiment of the present invention. After the BFD detection function is enabled on the network device and a BFD session is established with the peer device, the network devices at both ends of the BFD session can exchange BFD packets at the negotiated BFD detection interval through the link between them. . In the embodiment of the present invention, by extending the BFD message, it can carry relevant parameters for dete...

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Abstract

The invention discloses a link performance detection method and device based on BFD (Bidirectional Forwarding Detection), which are applied to two devices for enabling BFD detection and building a BFD session. The method comprises the following steps that: first equipment counts the performance parameter of a detected link and sends a BFD message to second equipment of the BFD session, wherein the BFD message contains the performance parameter; the first equipment receives a BFD response message returned by the second equipment, wherein the BFD response message contains the performance parameter of the detected link counted by the second equipment; the first equipment determines the performance of the detected link according to the link performance parameter counted by the second equipment and the link performance parameter counted by the first equipment in the received BFD response message; and / or, the second equipment determines the performance of the detected link according to the link performance parameter counted by the first equipment and the link performance parameter counted by the second equipment in the BFD response message. By use of the invention, the problem that the link performance detection between two BFD route switching devices cannot be realized by using the current BFD technology can be solved.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a BFD-based link performance detection method and a device thereof. Background technique [0002] BFD (Bi-Directional Forwarding Detection, bidirectional forwarding detection protocol), is gradually developed from the basic transmission technology, so it can detect faults at all layers of the network. In essence, BFD is a high-speed independent HELLO protocol, similar to the protocol used in routing protocols, such as Open Shortest Path First (Open Shortest Path First, OSPF), or can be combined with links, interfaces, tunnels, An IS-to-IS protocol for establishing relationships between routing or other network forwarding components. [0003] BFD enables the establishment of peering relationships with neighboring systems, and then each system monitors the BFD rate from the other system at the negotiated rate. The monitoring rate can be set in millisecond increme...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/56
Inventor 宋小恒
Owner NEW H3C TECH CO LTD
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