CN115314365A - Fast switching method for single protection group set - Google Patents
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- CN115314365A CN115314365A CN202210783413.6A CN202210783413A CN115314365A CN 115314365 A CN115314365 A CN 115314365A CN 202210783413 A CN202210783413 A CN 202210783413A CN 115314365 A CN115314365 A CN 115314365A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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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
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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Abstract
The invention discloses a fast switching method of a single protection group set, which comprises the steps of establishing a protection group set in a network equipment management system, and establishing a plurality of member protection groups, a first control switch and a second control switch in the protection group set, wherein any member protection group comprises a main pipeline, a standby channel and a fault detector, and the fault detector is used for detecting fault information of the main pipeline; binding a plurality of member protection groups with a first control switch and connecting the member protection groups with a main pipeline through the first control switch; the fault detector transmits fault information to the protection group set; the protection group set switches the first control switch to be communicated with standby pipelines of a plurality of member protection groups; updating a plurality of member protection groups; and switching the first control switch to be communicated with the main pipelines of the plurality of member protection groups. The invention effectively ensures the performance of protection switching and simultaneously solves the problem of error switching of all protection groups of the protection binding group in the prior art.
Description
Technical Field
The invention relates to the technical field of network equipment management, in particular to a fast switching method of a single protection group set.
Background
In the network protection technology, each working link is allocated with a dedicated high-priority protection link, and network resource switching is realized in a predictable manner after the working link fails, so that a network provider can more easily and effectively plan a network and understand the activity state of the network, and a bearer network has a protection switching capability of less than 50ms (sub 50 ms). Network applications such as large customer lines with high requirements on network communication quality are usually configured with dedicated protection groups in advance when a network is opened, so as to ensure the SLA quality of network services and realize carrier-class operation.
Due to the limited resources of the optical fiber path of the network, various network services are actually carried on the hard pipe of the shared optical fiber path by dividing the soft pipe. Each network protection group is provided with a dedicated fault detection mode in the working pipeline and the protection pipeline of the network protection group. When the optical fiber access fails, each protection group discovers network faults in a fault detection mode of the protection group, and triggers batch switching of each protection group. In order to improve the efficiency of protection switching, when the network protection switching is realized, a plurality of protection groups sharing the same working link and protection link are usually bound, and when any member protection group in the binding group detects a pipeline fault, all the protection groups are triggered to switch; however, the protection group binding technology enforces the binding of a plurality of protection groups, if a hose line of a certain protection group fails, all protection groups of the protection group are triggered to be switched by mistake, and a subsequent protection group switched by mistake is recovered to a normal state without a mechanism.
Disclosure of Invention
According to an embodiment of the present invention, a method for fast switching a single protection group set is provided, which includes the following steps:
creating a protection group set in an external network equipment management system, and creating a plurality of member protection groups, a first control switch and a second control switch in the protection group set, wherein any member protection group comprises a main pipeline, a standby channel and a fault detector, and the fault detector is used for detecting fault information of the main pipeline;
binding a plurality of member protection groups with a first control switch, wherein the plurality of member protection groups are respectively connected with main pipelines of the plurality of member protection groups through the first control switch;
the fault detector transmits the fault information of the main pipeline to the protection group set;
the protection group set switches the first control switch to be communicated with the standby pipelines of the plurality of member protection groups;
updating a plurality of member protection groups;
and switching the first control switch to be communicated with the main pipelines of the plurality of member protection groups.
Further, the updating process is carried out on a plurality of member protection groups, and comprises the following substeps:
updating the state of a plurality of member protection groups;
a plurality of member protection groups actively poll the link states of the plurality of member protection groups to obtain a plurality of problem protection groups;
several problem protection groups are updated.
Further, the status updating of the plurality of member protection groups comprises the following substeps:
updating the state of the member protection group corresponding to the main pipeline with the fault;
and updating the state of the protection groups of the other members.
Further, the status update comprises the following processing steps;
updating the link state of the member protection group;
and replacing the first control switch bound with the member protection group with a second control switch, and connecting the member protection group with the spare pipeline of the member protection group through the second control switch.
Further, updating a plurality of problem protection groups, comprising the following substeps;
creating a third control switch in the set of protection groups;
and replacing the second control switch bound with the problem protection group with a third control switch to bind, wherein the problem protection group is connected with the main pipeline of the problem protection group through the third control switch.
Further, updating a plurality of problem protection groups comprises the following substeps:
and replacing the second control switch bound with the problem protection group with the first control switch.
Further, updating a plurality of problem protection groups comprises the following substeps:
updating the link state of the problem protection group;
and replacing the first control switch bound with the problem protection group with a second control switch, and connecting the problem protection group with a standby pipeline of the problem protection group through the second control switch.
Further, after the status of the plurality of member protection groups is updated, after the delay of the first time period, and after the status update of all the plurality of member protection groups is completed, the link status of the plurality of member protection groups is actively polled.
Further, after the protection group set switches the first control switch to be communicated with the standby pipelines of the plurality of member protection groups, after the time delay of a second time period, the plurality of member protection groups are updated after the plurality of member protection groups are all communicated with the standby pipelines of the plurality of member protection groups.
According to the method for rapidly switching the single protection group set, the performance of protection switching can be effectively guaranteed, and meanwhile the problems that all protection groups of a protection binding group can be triggered to be switched by mistake and the protection groups switched by mistake are recovered to a normal state without a subsequent mechanism in the prior art if a hose pipeline of a certain protection group breaks down can be solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology.
Drawings
FIG. 1 is a schematic diagram of a first implementation according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a second implementation according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating steps of a fast switching method for a single protection group set according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating sub-steps of step S5 in FIG. 1;
FIG. 5 is a flowchart illustrating sub-steps of step S51 in FIG. 4;
fig. 6 is a flowchart of the processing steps of the status update of step S51 in fig. 4;
FIG. 7 is a flowchart illustrating sub-steps of step S53 according to a first implementation example of the present invention;
fig. 8 is a flowchart of sub-steps of step S53 according to a second implementation of the embodiment of the invention;
fig. 9 is a flowchart of sub-steps of step S53 according to a third implementation of an example of the invention.
Detailed Description
The present invention will be further explained by describing preferred embodiments of the present invention in detail with reference to the accompanying drawings.
First, a fast switching method of a single protection group set according to an embodiment of the present invention will be described with reference to fig. 1~9, which is used for transmitting data and has a wide application scenario.
When an actual network is deployed, a network protection group is typically deployed for each customer for the purpose of meeting requirements such as SLAs agreed with the customer, and these network protection groups typically have the same primary pipe and backup pipe. Thus, in this embodiment, a protection group having the same primary pipeline and standby pipeline in configuration is defined as a protection group set, and member protection groups in the protection group set may be in different protection group switching states.
As shown in fig. 1~3, the fast switching method for a single protection group set according to the embodiment of the present invention includes the following steps:
in S1, as shown in 1~3, a protection group set is created in an external network device management system, and a plurality of member protection groups, a first control switch (switch a) and a second control switch (switch B) are created in the protection group set, where any member protection group includes a main pipe, a standby pipe, and a fault detector, and the fault detector is configured to detect fault information of the main pipe.
In S2, as shown in 1~3, a plurality of member protection groups are bound to a first control switch (switch a), and the plurality of member protection groups are respectively connected to the main pipelines of the plurality of member protection groups through the first control switch (switch a), so that the plurality of member protection groups use the main pipelines to carry services through the first control switch (switch a).
In S3, as shown in 1~3, the fault detector transmits the fault information of the main pipeline to the protection group set.
In S4, as shown in 1~3, the protection group set switches the first control switch (switch a) to communicate with the standby pipes of the member protection groups, so that the member protection groups use the standby pipes to carry the traffic through the first control switch (switch a).
In S5, as shown in 1~3, update processing is performed on a plurality of member protection groups.
Further, the updating process is carried out on a plurality of member protection groups, and comprises the following substeps:
in S51, as shown in fig. 4, status update is performed for a plurality of member protection groups.
Further, the status updating is carried out on a plurality of member protection groups, and the method comprises the following substeps:
in S511, as shown in fig. 5, the state of the member protection group corresponding to the failed primary pipe is updated.
In S512, as shown in fig. 5, status update is performed on the remaining member protection groups.
Further, the status update comprises the following processing steps;
in S5101, as shown in fig. 6, the link status of the member protection group is updated so that the link status of the member protection group coincides with the link actually applied by the protection group.
In S5102, as shown in fig. 6, the first control switch (switch a) bound to the member protection group is replaced with a second control switch (switch B), and the member protection group is connected to the standby pipe of the member protection group through the second control switch (switch B), so that the member protection group uses the standby pipe to carry traffic.
In S52, as shown in fig. 4, a plurality of protection groups actively poll link statuses of a plurality of protection groups, and a plurality of problem protection groups are obtained.
Further, after the status of the plurality of member protection groups is updated, after the delay of the first time period, and after the status update of all the plurality of member protection groups is completed, the link status of the plurality of member protection groups is actively polled.
In S53, as shown in fig. 4, update redo is performed for a plurality of problem protection groups.
Further, updating and redoing a plurality of problem protection groups, comprising the following substeps;
in S531, as shown in fig. 1 and 7, a third control switch (switch C) is created in the protection group set.
In S532, as shown in fig. 1 and 7, the second control switch (switch B) bound to the problem protection group is replaced with the third control switch (switch C) to bind to the problem protection group, and the problem protection group is connected to the main pipe of the problem protection group through the third control switch (switch C), so that the problem protection group uses the main channel to carry the service through the third control switch (switch C).
Further, updating and redoing a plurality of problem protection groups, comprising the following substeps:
in S531, as shown in fig. 2 and 8, the second control switch (switch B) bound to the problem protection group is replaced with the first control switch (switch a), so that the problem protection group uses the main channel to carry the service through the first control switch (switch a), which is the second implementation scheme of this embodiment, and the problem that, in the prior art, if some protection groups have a fault due to their own hose lines, all protection groups of the protection binding group are triggered to perform false switching is solved.
Further, the updating and redoing of the plurality of problem protection groups comprises the following substeps:
in S531, as shown in fig. 9, the link status of the problem protection group is updated.
In S532, as shown in fig. 9, the first control switch (switch a) bound to the problem protection group is replaced with the second control switch (switch B), and the problem protection group is connected to the standby pipe of the problem protection group through the second control switch (switch B), so that the problem protection group uses the standby channel to carry the service through the second control switch (switch B).
Further, after the protection group set switches the first control switch (switch A) to be communicated with the standby pipelines of the plurality of member protection groups, after the time delay of a second time period, the plurality of member protection groups are updated after the plurality of member protection groups are all communicated with the standby pipelines of the plurality of member protection groups.
In S6, as shown in 1~3, the first control switch (switch a) is switched to communicate with the main pipelines of the plurality of member protection groups.
In the above, with reference to 1~9, the fast switching method for a single protection group set according to the embodiment of the present invention is described, which can effectively ensure the performance of protection switching, and can solve the problems that, in the prior art, if a hose pipeline of a certain protection group fails, all protection groups of a protection binding group are triggered to perform false switching, and a subsequent protection group that is erroneously switched is recovered to a normal state without a mechanism.
It should be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (9)
1. A fast switching method for a single protection group set is characterized by comprising the following steps:
creating a protection group set in an external network equipment management system, and creating a plurality of member protection groups, a first control switch and a second control switch in the protection group set, wherein any member protection group comprises a main pipeline, a standby channel and a fault detector, and the fault detector is used for detecting fault information of the main pipeline;
binding the plurality of member protection groups with the first control switch, wherein the plurality of member protection groups are respectively connected with the main pipelines of the plurality of member protection groups through the first control switch;
the fault detector transmits the fault information of the main pipeline to the protection group set;
the protection group set switches a first control switch to be communicated with the standby pipelines of the plurality of member protection groups;
updating the plurality of member protection groups;
and switching the first control switch to be communicated with the main pipelines of the plurality of member protection groups.
2. The method for fast switching of a single protection group set according to claim 1, wherein the updating process for the plurality of member protection groups comprises the following sub-steps:
updating the state of the plurality of member protection groups;
the member protection groups actively poll the link states of the member protection groups to obtain a plurality of problem protection groups;
updating the number of issue protection groups.
3. The method for fast switching of a single protection group set according to claim 2, wherein the status update of the plurality of member protection groups comprises the following sub-steps:
updating the state of the member protection group corresponding to the main pipeline with the fault;
and updating the state of the rest member protection groups.
4. A fast switching method for a single protection group set according to claim 2 or 3, wherein said status update comprises the following processing steps;
updating the link state of the member protection group;
and replacing the first control switch bound with the member protection group with the second control switch, wherein the member protection group is connected with a standby pipeline of the member protection group through the second control switch.
5. A method for fast switching of a set of single protection groups according to claim 2, wherein updating said plurality of problem protection groups comprises the sub-steps of;
creating a third control switch in the set of protection groups;
and replacing the second control switch bound with the problem protection group with the third control switch to bind, wherein the problem protection group is connected with the main pipeline of the problem protection group through the third control switch.
6. A method for fast switching of a set of single protection groups according to claim 2, wherein updating said plurality of problem protection groups comprises the sub-steps of:
and replacing the second control switch bound with the problem protection group with the first control switch.
7. A method for fast switching of a set of single protection groups according to claim 2, wherein updating said plurality of problem protection groups comprises the sub-steps of:
updating the link state of the problem protection group;
and replacing the first control switch bound with the problem protection group with the second control switch, wherein the problem protection group is connected with a standby pipeline of the problem protection group through the second control switch.
8. The method for fast switching between single protection group sets according to claim 2, wherein after the status update is performed on the plurality of member protection groups, after a delay of a first time period elapses and the status update is completed for all the plurality of member protection groups, the link statuses of the plurality of member protection groups are actively polled.
9. The method for rapidly switching over a single protection group set according to claim 1, wherein after the protection group set switches over the first control switch to be connected to the standby pipes of the plurality of member protection groups, after a delay of a second time period, the plurality of member protection groups are updated after all the plurality of member protection groups are connected to the standby pipes of the plurality of member protection groups.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102325042A (en) * | 2011-07-19 | 2012-01-18 | 中兴通讯股份有限公司 | PE (provider edge router) and protection method of homologous homoclinic PWs (pseudo wires) |
| US20120163163A1 (en) * | 2010-12-23 | 2012-06-28 | Electronics And Telecommunications Research Institute | Apparatus and method for protection switching of multiple protection group |
| CN102571458A (en) * | 2012-03-05 | 2012-07-11 | 中兴通讯股份有限公司 | Switching method and device for tunnel protection sets |
| WO2012100571A1 (en) * | 2011-01-24 | 2012-08-02 | 中兴通讯股份有限公司 | Centralized management method and system for multiple tunnels with the same path |
| CN102739529A (en) * | 2012-06-18 | 2012-10-17 | 中兴通讯股份有限公司 | Method and device for protecting pseudo wire protection group |
| CN102868441A (en) * | 2012-08-22 | 2013-01-09 | 中兴通讯股份有限公司 | Protection switching method and system and optical network node |
| WO2016058320A1 (en) * | 2014-10-15 | 2016-04-21 | 中兴通讯股份有限公司 | Method, device and system for reducing centralized protection switching time in potn system |
| CN106941445A (en) * | 2017-02-27 | 2017-07-11 | 烽火通信科技股份有限公司 | The method and system of the quick stratification pretection switch of MPLS TP |
| CN108462601A (en) * | 2017-11-22 | 2018-08-28 | 上海欣诺通信技术股份有限公司 | More protection group reverse methods, device and network element device applied to optical transport network |
| CN112511326A (en) * | 2020-03-16 | 2021-03-16 | 中兴通讯股份有限公司 | Switching method, device, equipment and storage medium |
| CN113794632A (en) * | 2021-08-31 | 2021-12-14 | 新华三信息安全技术有限公司 | Network protection method and device |
-
2022
- 2022-07-05 CN CN202210783413.6A patent/CN115314365B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120163163A1 (en) * | 2010-12-23 | 2012-06-28 | Electronics And Telecommunications Research Institute | Apparatus and method for protection switching of multiple protection group |
| WO2012100571A1 (en) * | 2011-01-24 | 2012-08-02 | 中兴通讯股份有限公司 | Centralized management method and system for multiple tunnels with the same path |
| CN102325042A (en) * | 2011-07-19 | 2012-01-18 | 中兴通讯股份有限公司 | PE (provider edge router) and protection method of homologous homoclinic PWs (pseudo wires) |
| CN102571458A (en) * | 2012-03-05 | 2012-07-11 | 中兴通讯股份有限公司 | Switching method and device for tunnel protection sets |
| CN102739529A (en) * | 2012-06-18 | 2012-10-17 | 中兴通讯股份有限公司 | Method and device for protecting pseudo wire protection group |
| CN102868441A (en) * | 2012-08-22 | 2013-01-09 | 中兴通讯股份有限公司 | Protection switching method and system and optical network node |
| WO2016058320A1 (en) * | 2014-10-15 | 2016-04-21 | 中兴通讯股份有限公司 | Method, device and system for reducing centralized protection switching time in potn system |
| CN106941445A (en) * | 2017-02-27 | 2017-07-11 | 烽火通信科技股份有限公司 | The method and system of the quick stratification pretection switch of MPLS TP |
| CN108462601A (en) * | 2017-11-22 | 2018-08-28 | 上海欣诺通信技术股份有限公司 | More protection group reverse methods, device and network element device applied to optical transport network |
| CN112511326A (en) * | 2020-03-16 | 2021-03-16 | 中兴通讯股份有限公司 | Switching method, device, equipment and storage medium |
| CN113794632A (en) * | 2021-08-31 | 2021-12-14 | 新华三信息安全技术有限公司 | Network protection method and device |
Non-Patent Citations (2)
| Title |
|---|
| SHICHENG ZHANG: "Efficient and reliable protection mechanism in long-reach PON", 《JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING》, vol. 8, no. 1, XP011596782, DOI: 10.1364/JOCN.8.000023 * |
| 侯磊: "保护组叠加倒换方法的研究与应用", 《信息技术与网络安全》, vol. 38, no. 2, pages 33 - 36 * |
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