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Method and device for multi-point fault recovery based on state PCE

A multi-point failure and state technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as long service failure recovery time, inability to cope with multi-point failures, and high real-time computing pressure, to improve the recovery success rate. , Save rerouting recovery time, and solve the effect of fault recovery

Active Publication Date: 2021-06-01
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the above defects or improvement needs of the prior art, the present invention provides a solution for multi-point fault recovery based on state PCE, the purpose of which is to realize fast recovery of multi-point faults through multi-point fault simulation, abstraction and pre-computation This solves the technical problems that the traditional solution cannot cope with multi-point failures and real-time computing pressure, low efficiency, and long recovery time from business failures

Method used

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  • Method and device for multi-point fault recovery based on state PCE
  • Method and device for multi-point fault recovery based on state PCE
  • Method and device for multi-point fault recovery based on state PCE

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Embodiment 1

[0040] In order to solve the technical problems that the traditional solution cannot cope with multi-point failures and the real-time computing pressure is high, the efficiency is low, and the business failure recovery time is long, the embodiment of the present invention provides a method for multi-point failure recovery based on the state PCE, such as image 3 As shown, it mainly includes the following steps (for the complete process, please refer to Figure 8 ):

[0041] Step 10, the state PCE simulates various fault topologies for the current service according to the TE link topology and the service information of the current service, and performs simulation calculation to obtain recovery routes corresponding to different fault topologies.

[0042] First, PCC (Path Computation Clients, that is, Path Computation Clients) will report the service information of the TE link topology and the current service to the status PCE. The service information mainly refers to the origina...

Embodiment 2

[0068] On the basis of the method for recovering from multi-point faults based on the state PCE provided in the above-mentioned embodiment 1, the present invention also provides a device for recovering from multi-point faults based on the state PCE that can be used to implement the above method, such as Figure 11 Shown is a schematic diagram of the device architecture of the embodiment of the present invention. The apparatus for performing multi-point fault recovery based on stateful PCE in this embodiment includes one or more processors 21 and memory 22 . in, Figure 11 A processor 21 is taken as an example.

[0069] The processor 21 and the memory 22 may be connected via a bus or in other ways, Figure 11 Take connection via bus as an example.

[0070] The memory 22 is a non-volatile computer-readable storage medium as a method for recovering from multi-point faults based on state PCE, and can be used to store non-volatile software programs, non-volatile computer-executa...

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Abstract

The invention discloses a multi-point fault recovery method and device based on a state PCE, and the state PCE simulates various different fault topologies for the current service according to the TE link topology and the service information of the current service, and carries out the simulation calculation, and obtains the recovery routes corresponding to the different fault topologies. The state PCE abstracts each TE link, each fault topology and each recovery route calculated by simulation, and stores a recovery route simulation result corresponding to each fault topology in an abstract form; and when a TE link fault occurs in the original route of the current service, the state PCE updates the fault topology in real time and abstracts the fault topology, further searches a corresponding recovery route from the simulation result based on the abstracted real-time fault topology, and switches the current service to the recovery route. According to the scheme, the rerouting recovery time is effectively saved, the rerouting recovery success rate is improved, and the processing pressure of real-time routing calculation of the PCE server can be reduced.

Description

technical field [0001] The invention belongs to the field of control plane technology, and more specifically relates to a method and device for recovering from multi-point faults based on stateful PCE. Background technique [0002] With the rapid development of ROADM (Reconfigurable Optical Add-Drop Multiplexer, reconfigurable optical add-drop multiplexer) all-optical network, the network scale, nodes and business volume are increasing rapidly, and the efficiency and success rate of the control plane based on real-time damage calculation Both have become bottlenecks in the stable operation of the live network. At this stage, operators require 100% recovery for engineering network single-point failures, and require S-level switching time and be as short as possible, and have put forward requirements for fast multi-point failures and high recovery rates. Among them, in TE (Traffic Engineering, that is, traffic engineering) link topology, a single point of failure means that t...

Claims

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Application Information

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IPC IPC(8): H04L12/24
CPCH04L41/0654
Inventor 胡续坤
Owner FENGHUO COMM SCI & TECH CO LTD
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