CN105743565A - Optical transport network protection switching method and device - Google Patents
Optical transport network protection switching method and device Download PDFInfo
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- CN105743565A CN105743565A CN201410741256.8A CN201410741256A CN105743565A CN 105743565 A CN105743565 A CN 105743565A CN 201410741256 A CN201410741256 A CN 201410741256A CN 105743565 A CN105743565 A CN 105743565A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention provides an optical transport network protection switching method and device, relates to the field of the information transmission in an optical transmission network. The method comprises: the first client-side single board of the optical transmission network is configured to obtain detection information of a work line through a work line-side single board, and the detection information of the work line is obtained by detecting the work line through the work line-side single board; and if obtained detection information of the work lines shows the work line has faults, the first client-side single board executes a protection switching strategy, and the business data is switched to a protection line from the work line. According to the scheme of the invention, the decision of the protection group of each business data is intensively executed by an original crossing single board and executed through being dispersed on each client-side single board, therefore, in the condition of a plurality of protection groups, the protection switching processing time is shortened, and the capacity resource of the crossing single board is released.
Description
Technical field
The present invention relates to the field of information transmission in optical transport network, particularly a kind of pretection switch method of optical transfer network and device.
Background technology
Traditional OTN (optical transfer network, OpticalTransportNetwork) is based on circuit-switched technology to transmit data.Shown in Fig. 1 is existing OTN framework, and in circuit switching, business datum is sent to intersection veneer by each customer side veneer, intersection veneer determine transmission line.Business datum is distributed to the line side veneer in fixed transmission path by the veneer that intersects, and is transmitted by line side veneer afterwards, arrives opposite end.Under this circuit-switched technology, it is necessary to be responsible for the pretection switch work in transmission path by intersection veneer.That is, the veneer that intersects carrys out monitoring circuit (i.e. primary transmission line) whether fault, and after determining fault, based on APS agreement, work is switched in execution, makes protection circuit (i.e. standby transport circuit) substitute working line.
Owing to the speed based on circuit-switched technology transmission data is far away from packet switch.Therefore, current more existing forward position companies begin at and attempt by packet-switch technology transport service data on OTN.Packet-switch technology, also referred to as packet technology, is that business datum is divided into certain length, and each part is called a packet, is transmitted each grouped data by transmitting the mode of packet, and grouped data reassembles in opposite end the business datum of OTN.
Owing to the cross grain of packet switch is less; therefore the capacity requirement of intersection veneer is bigger; and be by intersecting the responsible execution of veneer concentration in traditional OTN pretection switch method, therefore occupy very big capacity, so being currently needed for again researching and developing the pretection switch scheme of OTN.
Summary of the invention
The technical problem to be solved in the present invention is to provide pretection switch method and the device of a kind of optical transfer network, it is possible to replaced the execution pretection switch of intersection veneer by customer side veneer
For solving above-mentioned technical problem, embodiments of the invention provide a kind of pretection switch method of optical transfer network, including:
First customer side veneer of optical transfer network obtains the detection information of working line to active line trackside veneer, and the detection information of described working line is that this working line is detected and obtains by active line trackside veneer；
If the detection information of the described working line got indicates described working line to break down, then described first customer side veneer performs pretection switch strategy, business datum is switched to protection circuit by working line.
Wherein, described first customer side veneer performs pretection switch protection side slightly, business datum is switched to protection circuit by working line, including:
Described first customer side veneer is to described active line trackside veneer transmitted traffic shutdown command so that described active line trackside veneer cuts out the flow switch of this working line；
Described first customer side veneer is to institute's protective wire trackside veneer transmitted traffic open command and switches order; make described protective wire trackside veneer open the flow switch of this protection circuit, and switch order complete the pretection switch action of described business datum according to described.
Wherein, described first customer side veneer obtains the detection information of protection circuit to protective wire trackside veneer, and the detection information of described protection circuit is that this protection circuit is detected and obtains by protective wire trackside veneer；
Wherein, described first customer side veneer indicates described working line to break down in the detection information of described working line, and when the detection information of described protection circuit indicates described protection circuit not have fault, performs the pretection switch of business datum.
Wherein, described method also includes:
Described first customer side veneer, after the pretection switch completing described business datum, sends to the second customer side veneer of described optical transfer network and switches notice；
Wherein, described second customer side veneer obtains the detection information of working line to active line trackside veneer; and after determining that working line breaks down according to the detection information got; start timing; if timing reaches predetermined threshold value; fail to receive and switch notice from the first customer side veneer, then replace what described first customer side veneer performed described business datum to switch protection.
Additionally, embodiments of the invention also provide for the pretection switch device of a kind of optical transfer network, including:
Acquisition module, for obtaining the detection information of working line to active line trackside veneer, the detection information of described working line is that this working line is detected and obtains by active line trackside veneer；
Pretection switch module, if the detection information of the described working line for getting indicates described working line to break down, then performs pretection switch strategy, business datum is switched to protection circuit by working line.
Wherein, described pretection switch module includes:
First sends submodule, is used for described active line trackside veneer transmitted traffic shutdown command so that described active line trackside veneer cuts out the flow switch of this working line；
Second sends submodule; for to institute's protective wire trackside veneer transmitted traffic open command and switch order; make described protective wire trackside veneer open the flow switch of this protection circuit, and switch order complete the pretection switch action of described business datum according to described.
Wherein, described device also includes:
Second acquisition module, for obtaining the detection information of protection circuit to protective wire trackside veneer, the detection information of described protection circuit is that this protection circuit is detected and obtains by protective wire trackside veneer；
Wherein, described pretection switch module indicates described working line to break down in the detection information of described working line, and when the detection information of described protection circuit indicates described protection circuit not have fault, performs the pretection switch of business datum.
Wherein, described device also includes:
Sending module, for switching after protection module completes the pretection switch of described business datum described, sends to the second customer side veneer of described optical transfer network and switches notice；
Wherein, described second customer side veneer obtains the detection information of working line to active line trackside veneer; and after determining that working line breaks down according to the detection information got; start timing; if timing reaches predetermined threshold value; fail to receive and switch notice from the first customer side veneer, then replace what described first customer side veneer performed described business datum to switch protection.
Additionally, embodiments of the invention also provide for a kind of customer side veneer, including the pretection switch device of above-mentioned optical transfer network.
Having the beneficial effect that of the technique scheme of the present invention:
Adopt the solution of the present invention; the decision-making of the protection group of each business datum, by the concentrative implementation of original intersection veneer, is distributed on each customer side veneer and performs, when protection group number is numerous; shorten pretection switch and process the time, and discharge the capacity resource of intersection veneer.
Accompanying drawing explanation
Fig. 1 is the framework schematic diagram of existing OTN；
Fig. 2 is the step schematic diagram of the pretection switch method of the present invention；
Fig. 3 is the schematic flow sheet that the present invention performs the pretection switch method of transmission line；
Fig. 4 is the structural representation of the pretection switch device of the present invention.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
In the prior art; the wrap protection of OTN transmission line is by intersecting veneer concentrative implementation; in jumbo protection group situation; it is difficult to carry out in time corresponding pretection switch; for this; the invention provides a kind of pretection switch method of brand-new optical transfer network and device, customer side veneer replace the execution pretection switch of intersection veneer.
As it is shown in figure 1, described pretection switch method includes:
Step 11, the first customer side veneer of optical transfer network obtains the detection information of working line to active line trackside veneer, and the detection information of described working line is that this working line is detected and obtains by active line trackside veneer；
Step 12, if the detection information of the described working line got indicates described working line to break down, then described first customer side veneer performs pretection switch strategy, business datum is switched to protection circuit by working line.
The method adopting the present embodiment, in Optical Transmission Network OTN, can be distributed on each customer side veneer by the decision-making of pretection switch group, when protection group number is numerous, shortens pretection switch and processes the time.
In addition; traditional circuit-switched technology uses the mode transport service data of dual transmitting and receiving; dual transmitting and receiving refers to: business datum is sent to opposite end by transmitting terminal by working line and protection circuit simultaneously; opposite end preferentially receives the business datum on working line; after working line fault, receive the business datum on protection circuit.Therefore, under this dual transmitting and receiving mechanism, the flow of working line and protection circuit is constantly in open mode, takies the cross-capacity intersected on veneer in vain.For this, preferably, the present invention achieves the flow unlatching/closing function controlling working line and protection circuit on customer side veneer.That is, above-mentioned steps 12 specifically includes:
Step 121, described first customer side veneer is to described active line trackside veneer transmitted traffic shutdown command so that described active line trackside veneer cuts out the flow switch of this working line；
Step 122; described first customer side veneer is to institute's protective wire trackside veneer transmitted traffic open command and switches order; make described protective wire trackside veneer open the flow switch of this protection circuit, and switch order complete the pretection switch action of described business datum according to described.
Under working line normal operation, the flow of protection circuit is in normally off.When, after working line fault, the first customer side veneer can control active line trackside veneer and cut out the flow on working line, thus no longer taking the capacity resource of intersection veneer.
Specifically, on the basis of above-described embodiment, described method also includes:
Step 13, described first customer side veneer obtains the detection information of protection circuit to protective wire trackside veneer, and the detection information of described protection circuit is that this protection circuit is detected and obtains by protective wire trackside veneer；
Wherein, described first customer side veneer indicates described working line to break down in the detection information of described working line, and when the detection information of described protection circuit indicates described protection circuit not have fault, performs the pretection switch of business datum.
That is, the state of protection circuit and working line caught by the first customer side veneer simultaneously, when working line fault, only at protection circuit under normal circumstances, switches business datum to protection circuit.
Additionally, for the execution being further ensured that this programme, a second customer side veneer also can be added; build a protection group with the first customer side veneer, form redundancy scheme, namely; if the first customer side veneer cannot perform the pretection switch of working line, then it is responsible for execution by the second customer side veneer.
When being embodied as such scheme, described second customer side veneer and the first customer side veneer are the same, obtain the detection information of working line to active line trackside veneer, and the detection information according to working line determines whether working line breaks down in real time.First customer side veneer, after the pretection switch completing described business datum, sends to the second customer side veneer of described optical transfer network and switches notice；After described second customer side veneer determines that working line breaks down; start timing; if timing reaches predetermined threshold value; fail to receive and switch notice from the first customer side veneer; then determine the first customer side veneer generation unusual condition; and perform redundancy protocol, what replace the described first customer side veneer described business datum of execution switches protection.
Execution flow process to working line Yu the pretection switch of protection circuit is presented herein below describe in detail.
As it is shown on figure 3, first, working line is carried out fault detect by the active line trackside veneer of the working line in OLT system in real time.Assume that active line trackside veneer detects that working line breaks down, then send fault warning by its communication module to the first customer side veneer.In this process; the state of working line can be detected by active line trackside veneer according to existing APS (AutomaticProtectionSwitched APS) agreement; after detecting fault, send APS warning message to the first customer side veneer；
The communication module of the first customer side veneer is after receiving fault warning, by the APS agreement of its internal operation, selects corresponding protection circuit, and by communication module transmitted traffic shutdown command to active line trackside veneer.
Correspondence flow switch, after receiving flow switch order, cuts out by active line trackside veneer plate.
First customer side business board receives response by communication module and successfully reports hereinafter, sends and opens flow switch order and switch order to the protective wire trackside veneer of protection circuit.It should be noted that switching order is existing order, the relevant information (configuration such as multicast mode) of protection circuit side veneer configuration transport service data can be controlled.
Protective wire trackside single-deck is received by communication module after opening flow switch order, is opened by correspondence flow switch, and sets up the connection of business datum according to guarded command.
Below customer side veneer is implemented redundancy scheme to be specifically introduced.
Network management configuration specifies the first customer side veneer to be master controller; another the second customer side veneer is from controller; main operation controller APS agreement; thus active line trackside veneer and protective wire trackside veneer are monitored; and send flow switch order and switch order; APS agreement is run from controller, but not transmitted traffic switch command and switch order.
First customer side veneer is receiving the fault warning that First Line trackside veneer sends while; pass to the second customer side veneer; if the pretection switch of first customer side veneer successful execution working line and protection circuit; then switch notice to the second customer side, make the APS data that the first customer side veneer and the second customer side veneer run keep consistent.
After second customer side veneer determines active line trackside single board default according to APS agreement; if what do not receive the first customer side veneer within Preset Time switches notice; then think that the first customer side veneer is abnormal; automatically become master controller, and transmitted traffic switch command and switch order to protective wire trackside veneer.
First customer side veneer recovers normal, sends out status information to from the second customer side veneer by communication between plates, makes the second customer side veneer revert to from controller.
Additionally, another embodiment of the present invention also provides for the pretection switch device of a kind of optical transfer network, being applied to the first customer side veneer of optical transfer network, described optical transfer network is based on packet-switch technology transport service data, and as shown in Figure 4, described device includes:
Acquisition module, for obtaining the detection information of working line to active line trackside veneer, the detection information of described working line is that this working line is detected and obtains by active line trackside veneer；
Pretection switch module, if the detection information of the described working line for getting indicates described working line to break down, then performs pretection switch strategy, business datum is switched to protection circuit by working line.
Compared with prior art; the device of the present embodiment; the treatment mechanism centralized from traditional intersection veneer becomes by the packet type treatment mechanism of each customer side veneer, so that the response speed of pretection switch is faster, meets the optical transmission system time requirement to pretection switch well.
Described pretection switch module includes:
First sends submodule, is used for described active line trackside veneer transmitted traffic shutdown command so that described active line trackside veneer cuts out the flow switch of this working line；
Second sends submodule; for to institute's protective wire trackside veneer transmitted traffic open command and switch order; make described protective wire trackside veneer open the flow switch of this protection circuit, and switch order complete the pretection switch action of described business datum according to described.
Wherein, the device of the present embodiment also includes:
Second acquisition module, for obtaining the detection information of protection circuit to protective wire trackside veneer, the detection information of described protection circuit is that this protection circuit is detected and obtains by protective wire trackside veneer；
Wherein, described pretection switch module indicates described working line to break down in the detection information of described working line, and when the detection information of described protection circuit indicates described protection circuit not have fault, performs the pretection switch of business datum.
Wherein, the device of the present embodiment also includes:
Sending module, for switching after protection module completes the pretection switch of described business datum described, sends to the second customer side veneer of described optical transfer network and switches notice；
Wherein, described second customer side veneer obtains the detection information of working line to active line trackside veneer; and after determining that working line breaks down according to the detection information got; start timing; if timing reaches predetermined threshold value; fail to receive and switch notice from the first customer side veneer, then replace what described first customer side veneer performed described business datum to switch protection.
Obviously, the pretection switch device of the present embodiment is corresponding with a upper embodiment pretection switch method, all can reach identical technique effect.
Additionally, another embodiment of the present invention also provides for a kind of customer side veneer, include the pretection switch device of above-mentioned optical transfer network.The customer side veneer of the present embodiment can replace intersection veneer to perform the wrap protection of business datum, thus the capacity releasing intersection veneer takies.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from principle of the present invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
1. the pretection switch method of an optical transfer network, it is characterised in that including:
First customer side veneer of optical transfer network obtains the detection information of working line to active line trackside veneer, and the detection information of described working line is that this working line is detected and obtains by active line trackside veneer；
If the detection information of the described working line got indicates described working line to break down, then described first customer side veneer performs pretection switch strategy, business datum is switched to protection circuit by working line.
2. method according to claim 1, it is characterised in that
Described first customer side veneer performs pretection switch protection side slightly, business datum is switched to protection circuit by working line, including:
Described first customer side veneer is to described active line trackside veneer transmitted traffic shutdown command so that described active line trackside veneer cuts out the flow switch of this working line；
Described first customer side veneer is to institute's protective wire trackside veneer transmitted traffic open command and switches order; make described protective wire trackside veneer open the flow switch of this protection circuit, and switch order complete the pretection switch action of described business datum according to described.
3. method according to claim 1, it is characterised in that also include:
Described first customer side veneer obtains the detection information of protection circuit to protective wire trackside veneer, and the detection information of described protection circuit is that this protection circuit is detected and obtains by protective wire trackside veneer；
Wherein, described first customer side veneer indicates described working line to break down in the detection information of described working line, and when the detection information of described protection circuit indicates described protection circuit not have fault, performs the pretection switch of business datum.
4. method according to claim 1, it is characterised in that also include:
Described first customer side veneer, after the pretection switch completing described business datum, sends to the second customer side veneer of described optical transfer network and switches notice；
Wherein, described second customer side veneer obtains the detection information of working line to active line trackside veneer; and after determining that working line breaks down according to the detection information got; start timing; if timing reaches predetermined threshold value; fail to receive and switch notice from the first customer side veneer, then replace what described first customer side veneer performed described business datum to switch protection.
5. the pretection switch device of an optical transfer network, it is characterised in that including:
Acquisition module, for obtaining the detection information of working line to active line trackside veneer, the detection information of described working line is that this working line is detected and obtains by active line trackside veneer；
Pretection switch module, if the detection information of the described working line for getting indicates described working line to break down, then performs pretection switch strategy, business datum is switched to protection circuit by working line.
6. device according to claim 5, it is characterised in that
Described pretection switch module includes:
First sends submodule, is used for described active line trackside veneer transmitted traffic shutdown command so that described active line trackside veneer cuts out the flow switch of this working line；
Second sends submodule; for to institute's protective wire trackside veneer transmitted traffic open command and switch order; make described protective wire trackside veneer open the flow switch of this protection circuit, and switch order complete the pretection switch action of described business datum according to described.
7. device according to claim 5, it is characterised in that also include:
Second acquisition module, for obtaining the detection information of protection circuit to protective wire trackside veneer, the detection information of described protection circuit is that this protection circuit is detected and obtains by protective wire trackside veneer；
Wherein, described pretection switch module indicates described working line to break down in the detection information of described working line, and when the detection information of described protection circuit indicates described protection circuit not have fault, performs the pretection switch of business datum.
8. device according to claim 1, it is characterised in that also include:
Sending module, for switching after protection module completes the pretection switch of described business datum described, sends to the second customer side veneer of described optical transfer network and switches notice；
Wherein, described second customer side veneer obtains the detection information of working line to active line trackside veneer; and after determining that working line breaks down according to the detection information got; start timing; if timing reaches predetermined threshold value; fail to receive and switch notice from the first customer side veneer, then replace what described first customer side veneer performed described business datum to switch protection.
9. a customer side veneer, it is characterised in that including:
The pretection switch device of the optical transfer network as described in any one of claim 5-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741256.8A CN105743565A (en) | 2014-12-08 | 2014-12-08 | Optical transport network protection switching method and device |
| PCT/CN2015/096000 WO2016091094A1 (en) | 2014-12-08 | 2015-11-30 | Optical transport network protection switching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741256.8A CN105743565A (en) | 2014-12-08 | 2014-12-08 | Optical transport network protection switching method and device |
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| CN105743565A true CN105743565A (en) | 2016-07-06 |
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| CN201410741256.8A Pending CN105743565A (en) | 2014-12-08 | 2014-12-08 | Optical transport network protection switching method and device |
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| CN (1) | CN105743565A (en) |
| WO (1) | WO2016091094A1 (en) |
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| CN108259082A (en) * | 2016-12-29 | 2018-07-06 | 中兴通讯股份有限公司 | The method of pretection switch and control business board |
| CN110391841A (en) * | 2018-04-16 | 2019-10-29 | 中兴通讯股份有限公司 | A kind of dual-homing protection method, apparatus and dual-homing protection network |
| WO2021253999A1 (en) * | 2020-06-18 | 2021-12-23 | 中兴通讯股份有限公司 | Data access method and apparatus, chip and computer storage medium |
| WO2022105560A1 (en) * | 2020-11-18 | 2022-05-27 | 中兴通讯股份有限公司 | Service protection method, optical transport network device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112751607A (en) * | 2019-10-31 | 2021-05-04 | 中兴通讯股份有限公司 | Protection switching method and system for link aggregation port |
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| CN101170320B (en) * | 2007-11-28 | 2015-09-16 | 中兴通讯股份有限公司 | The method of crossed master/slave switching |
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| CN1921326A (en) * | 2006-08-29 | 2007-02-28 | 华为技术有限公司 | Method, device and system for main-standby inverting control |
| CN101515833A (en) * | 2008-02-21 | 2009-08-26 | 中兴通讯股份有限公司 | Method and device for realizing protection rearrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108259082A (en) * | 2016-12-29 | 2018-07-06 | 中兴通讯股份有限公司 | The method of pretection switch and control business board |
| CN108259082B (en) * | 2016-12-29 | 2021-02-12 | 中兴通讯股份有限公司 | Protection switching method and control service board |
| CN110391841A (en) * | 2018-04-16 | 2019-10-29 | 中兴通讯股份有限公司 | A kind of dual-homing protection method, apparatus and dual-homing protection network |
| WO2021253999A1 (en) * | 2020-06-18 | 2021-12-23 | 中兴通讯股份有限公司 | Data access method and apparatus, chip and computer storage medium |
| WO2022105560A1 (en) * | 2020-11-18 | 2022-05-27 | 中兴通讯股份有限公司 | Service protection method, optical transport network device and storage medium |
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| WO2016091094A1 (en) | 2016-06-16 |
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Application publication date: 20160706 |