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Method and device of bidirectional forwarding detection (BFD) oscillation damping

A bidirectional forwarding detection and oscillation damping technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as business interruption and achieve the effect of avoiding interruption

Inactive Publication Date: 2010-08-11
ZTE CORP
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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a method and device for two-way forwarding detection oscillation damping, to solve the problem of service interruption caused by the continuous squeeze of the SCTP buffer when a link is frequently interrupted

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  • Method and device of bidirectional forwarding detection (BFD) oscillation damping
  • Method and device of bidirectional forwarding detection (BFD) oscillation damping
  • Method and device of bidirectional forwarding detection (BFD) oscillation damping

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Embodiment Construction

[0035] The basic idea of ​​the present invention is: when the link is frequently broken, the line card processing board (LP, Line Process) calculates the penalty value through the oscillation damping algorithm, and judges whether the BFD session enters the damping state according to the corresponding conditions; when the BFD session After entering the damping state, LP judges whether the BFD session exits the damping state according to the corresponding conditions.

[0036] The method described in the present invention will be described in detail below with specific examples.

[0037] The method for detecting oscillation damping through bidirectional forwarding provided by the present invention is implemented jointly by using a distributed architecture, that is, jointly implemented by a route master processing board (RP, Route Process) and LP. Among them, RP and LP are located in the network element device, corresponding to the same BFD session has its own BFD process, the BFD...

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Abstract

The invention discloses a method and a device of bidirectional forwarding detection (BFD) oscillation damping. When a chain circuit is frequently disconnected intermittently, a line card processing board computes a penalty value through an oscillation damping algorithm and enables a BFD session to be in a damping state according to the corresponding condition; and after the fault of the chain circuit is eliminated, an LP enables the BFD session to be out of the damping state according to the corresponding condition. The method and the device of the invention solve the problem of service interruption caused by continuous extrusion of a SCTP buffer area when a certain chain circuit is frequently disconnected intermittently, so that services can be transmitted through other normal chain circuits, thereby avoiding the interruption of the whole service.

Description

technical field [0001] The present invention relates to bidirectional forwarding detection (BFD, Bidirectional Forwarding Detection) technology, in particular to a method and device for bidirectional forwarding detection oscillation damping. Background technique [0002] Bidirectional Forwarding Detection (BFD) is a protocol proposed by the International Standards Organization IETF and used to quickly detect faults in the forwarding path in Ethernet. The forwarding path includes: direct physical links, virtual circuits, tunnels, and multi-hop channels and non-directly connected channels, etc. BFD provides a unified fault detection method for network managers, enabling network managers to detect forwarding path faults at a uniform rate, which can not only make the network re-convergence time consistent and predictable, but also make the network Shaping and planning just got easier. Utilizing BFD to implement fault detection can help IP networks realize the transmission of v...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/24H04L12/56H04L45/28
CPCH04L41/0672H04L41/0661
Inventor 刘春江
Owner ZTE CORP
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