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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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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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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[0035] The basic idea of ​​the present invention is: when the link is frequently disconnected, 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 enters the damping state; After entering the damping state, the LP judges whether the BFD session exits the damping state according to the corresponding conditions.

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

[0037] The method for two-way forwarding detection oscillation damping provided by the present invention adopts a distributed architecture to jointly realize, that is, a routing general control processing board (RP, Route Process) and LP jointly realize. Among them, the RP and LP are located in the network element device, corresponding to the same BFD session and have their own...

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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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