CN107086956A - A kind of implementation method of Ethernet pretection switch - Google Patents
A kind of implementation method of Ethernet pretection switch Download PDFInfo
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- CN107086956A CN107086956A CN201710393656.8A CN201710393656A CN107086956A CN 107086956 A CN107086956 A CN 107086956A CN 201710393656 A CN201710393656 A CN 201710393656A CN 107086956 A CN107086956 A CN 107086956A
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- link
- egress
- oam
- master control
- protection module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of method that Ethernet pretection switch is realized, this method includes：S1; the link of two progress business datum configuration distributings is set up between source and egress, one is active link, and another is reserve link; source and egress are equipped with the Ethernet OAM for being respectively equipped with master control protection module, active link and reserve link and realizing the end-to-end OAM intercommunications of link；S2, Ethernet OAM sends OAM message in the way of the FPGA cycles give out a contract for a project, and OAM message includes the OAM CV frames for detecting chain alarming information and the APS frames with cfm id, and the APS frames of wherein active link are not enabled, and the APS frames of reserve link are enabled；S3; master control protection module according to the OAM message of active link and reserve link, judges Link State respectively, if active link failure or recovering the reserve link failure after normal or active link switching; then the master control protection module of source and egress, which is issued, switches order, carries out link switchover.
Description
Technical field
The present invention relates to Ethernet pretection switch technical field, and in particular to a kind of realization side of Ethernet pretection switch
Method.
Background technology
The actual demand runed according to carrier network, is generally divided into 3 major classes by the management work of network：Operation
(Operation), management (Administration), safeguard (Maintenance), i.e. OAM, it is main complete to commodity network and
Prediction, planning and configuration work that business is carried out, and the progress such as test to network and its business and fault management
Regular job activity.
Protection switch time PST (Protection Switching Time) is defined as, and occurs the moment from networking failure
Start to continue up to and be activated across the Protection path corresponding to the operating path of the failure, and position at the time of playing a role
A period of time, the protection switch time of light path be actually caused by network failure the light path out-of-service time, in this section
In time, all business information of impaired light path carrying will be all lost.
With 4G and it is following can the phase the 5G epoch arrival, the data service of existing optical-fiber network transmission equipment increases fast
Speed, and occupy leading, miscellaneous service all develops towards IPization direction, and PTN technologies are arisen at the historic moment.PTN has perfect OAM machines
System, while there are a variety of OAM agreements for different scenes.But current PTN device is with Ethernet bearing IPization business
When, Ethernet OAM technology and business are not organically combined so that 50ms is protected under the conditions of carrier class protection can not meet linear protection
The demand of protective switching.
The content of the invention
For defect present in prior art, realized it is an object of the invention to provide a kind of Ethernet pretection switch
Method, under Ethernet cable protection business model, can realize that Ethernet service switching time meets telecom operators and advised
Fixed 50ms protection switch time demands.
To achieve the above objectives, the present invention is adopted the technical scheme that：
A kind of method that Ethernet pretection switch is realized, this method includes：
S1, sets up the link of two progress business datum configuration distributings, wherein a link is between source and egress
Active link, another link is reserve link, and source and egress are equipped with master control protection module, the active link and standby
The Ethernet OAM for realizing the end-to-end OAM intercommunications of link is respectively equipped with link；
S2, Ethernet OAM sends OAM message in the way of the FPGA cycles give out a contract for a project, and the OAM message includes being used to detect chain
The APS frames of the OAM CV frames of road warning information and the link identification address cfm id that originated with Ethernet OAM, wherein active link
APS frames do not enable, the APS frames of reserve link are enabled；
S3, master control protection module according to the OAM message of active link and reserve link, judges Link State respectively, if main
With the master control protection module of the reserve link failure, then source and egress of link failure or recovery normally or after active link switching
Issue and switch order, carry out switching for active link and reserve link.
On the basis of above-mentioned technical proposal, if source master control protection module is according to OAM CV frames and the cfm id of APS frames
Judge that active link breaks down, then frame is switched in source master control protection module generation, broadcasted to all single-decks of source, carry out source
Active link to reserve link switching；Meanwhile,
Source master control protection module generation response frame is sent to egress, and it is concurrent that egress receives generation claim frame after response frame
Egress master control protection module is given, frame is switched in the generation of egress master control protection module, is broadcasted to all single-decks of egress, is carried out egress
Switching of the active link to reserve link.
On the basis of above-mentioned technical proposal, if source master control protection module is according to OAM CV frames and the cfm id of APS frames
Judge that active link recovers normal, then frame is switched in master control protection module generation, broadcasted to all single-decks of source, carry out the standby of source
With the switching of link to active link；Meanwhile,
Source master control protection module generation response frame is sent to egress, and it is concurrent that egress receives generation claim frame after response frame
Egress master control protection module is given, frame is switched in the generation of egress master control protection module, is broadcasted to all single-decks of egress, is carried out egress
Switching of the reserve link to active link.
On the basis of above-mentioned technical proposal, the cycle of giving out a contract for a project of the OAM CV frames is 3.33ms.
On the basis of above-mentioned technical proposal, during the active link failure, the APS frames are sent out soon using 3.33ms as the cycle
Three frames.
On the basis of above-mentioned technical proposal, when the active link is normal, the cycle of giving out a contract for a project of the APS frames is 1s.
On the basis of above-mentioned technical proposal, cfm id are generated by the md id of Ethernet OAM, ma id and mep id.
Compared with prior art, the advantage of the invention is that：
The method that a kind of Ethernet pretection switch of the present invention is realized, OAM message is sent in the way of the FPGA cycles give out a contract for a project,
OAM message include OAM CV frames and APS frames, no matter active link or reserve link failure, OAM CV frames can be in respective link
Upper report and alarm information, and these warning information inform master control protection module by APS frames so that master control protection module is perceived
Link failure simultaneously issues and switches order, disclosure satisfy that 50ms protection switch times demand as defined in telecom operators, reduces network
Service is influenceed by link terminal.
Brief description of the drawings
Fig. 1 is the flow chart in the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, the embodiment of the present invention provides a kind of method that Ethernet pretection switch is realized, this method includes：
S1, sets up the link of two progress business datum configuration distributings, wherein a link is between source and egress
Active link, another link is reserve link, and source and egress are equipped with master control protection module, active link and reserve link
On be respectively equipped with the Ethernet OAM for realizing the end-to-end OAM intercommunications of link；
S2, Ethernet OAM sends OAM message in the way of the FPGA cycles give out a contract for a project, and OAM message includes being used to detect that link is accused
The APS frames of the OAM CV frames of alert information and the link identification address cfm id that originated with Ethernet OAM, OAM CV frames are given out a contract for a project week
Phase is 3.33ms, and the APS frames of wherein active link are not enabled, and the APS frames of reserve link are enabled, and during active link failure, APS
Frame three frames of fast hair by the cycle of 3.33ms, when active link is normal, the cycle of giving out a contract for a project of APS frames is 1s；
S3, master control protection module according to the OAM message of active link and reserve link, judges Link State respectively, if main
With the master control protection module of the reserve link failure, then source and egress of link failure or recovery normally or after active link switching
Issue and switch order, carry out switching for active link and reserve link.
Specific determination methods are as follows：If source master control protection module judges to lead according to the cfm id of OAM CV frames and APS frames
Broken down with link, then frame is switched in source master control protection module generation, broadcasted to all single-decks of source, carry out the primary of source
Switching of the link to reserve link；Meanwhile, source master control protection module generation response frame is sent to egress, and egress receives response
Claim frame is generated after frame and egress master control protection module is sent to, frame is switched in the generation of egress master control protection module, all to egress
Single-deck is broadcasted, and carries out the active link of egress to the switching of reserve link.If source master control protection module according to OAM CV frames and
The cfm id of APS frames judge that active link recovers normal, then frame is switched in master control protection module generation, wide to all single-decks of source
Broadcast, carry out the reserve link of source to the switching of active link；Meanwhile, source master control protection module generation response frame is sent to place
End, egress, which is received, to be generated claim frame and is sent to egress master control protection module after response frame, egress master control protection module is generated
Frame is switched, is broadcasted to all single-decks of egress, the reserve link of egress is carried out to the switching of active link.
Cfm id are generated by the md id of Ethernet OAM, ma id and mep id.Cfm id are write in APS frames, and passed through
Protection module is sent in FPGA modes, realizes that protection module is associated with Ethernet OAM, passes through Ethernet OAM therein source chain
Line address is known that active link or reserve link break down, and the link is issued and switches order.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (7)
1. a kind of method that Ethernet pretection switch is realized, it is characterised in that this method includes：
S1, sets up the link of two progress business datum configuration distributings between source and egress, wherein a link is primary
Link, another link is reserve link, and source and egress are equipped with master control protection module, the active link and reserve link
On be respectively equipped with the Ethernet OAM for realizing the end-to-end OAM intercommunications of link；
S2, Ethernet OAM sends OAM message in the way of the FPGA cycles give out a contract for a project, and the OAM message includes being used to detect that link is accused
The APS frames of the OAM CV frames of alert information and the link identification address cfm id that originated with Ethernet OAM, wherein active link
APS frames are not enabled, and the APS frames of reserve link are enabled；
S3, master control protection module according to the OAM message of active link and reserve link, judges Link State respectively, if primary chain
Road failure recovers the reserve link failure after normal or active link switching, then the master control protection module of source and egress is issued
Switch order, carry out switching for active link and reserve link.
2. the method that a kind of Ethernet pretection switch as claimed in claim 1 is realized, it is characterised in that：
If source master control protection module judges that active link breaks down according to the cfm id of OAM CV frames and APS frames, source
Frame is switched in the generation of master control protection module, is broadcasted to all single-decks of source, carries out the active link of source to the switching of reserve link；
Meanwhile,
Source master control protection module generation response frame is sent to egress, and egress, which is received, to be generated claim frame and be sent to after response frame
Frame is switched in egress master control protection module, egress master control protection module generation, is broadcasted to all single-decks of egress, is carried out the primary of egress
Switching of the link to reserve link.
3. the method that a kind of Ethernet pretection switch as claimed in claim 2 is realized, it is characterised in that：
If source master control protection module judges that active link recovers normal according to the cfm id of OAM CV frames and APS frames, master control
Frame is switched in protection module generation, is broadcasted to all single-decks of source, carries out the reserve link of source to the switching of active link；Together
When,
Source master control protection module generation response frame is sent to egress, and egress, which is received, to be generated claim frame and be sent to after response frame
Frame is switched in egress master control protection module, egress master control protection module generation, is broadcasted to all single-decks of egress, is carried out the standby of egress
Switching of the link to active link.
4. the method that a kind of Ethernet pretection switch as claimed in claim 1 is realized, it is characterised in that：The OAM CV frames
The cycle give out a contract for a project for 3.33ms.
5. the method that a kind of Ethernet pretection switch as claimed in claim 1 is realized, it is characterised in that：The active link event
During barrier, the APS frames three frames of fast hair by the cycle of 3.33ms.
6. the method that a kind of Ethernet pretection switch as claimed in claim 1 is realized, it is characterised in that：The active link is just
Chang Shi, the cycle of giving out a contract for a project of the APS frames is 1s.
7. the method that a kind of Ethernet pretection switch as claimed in claim 1 is realized, it is characterised in that：Cfm id are by Ethernet
OAM md id, ma id and mep id generation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710393656.8A CN107086956A (en) | 2017-05-27 | 2017-05-27 | A kind of implementation method of Ethernet pretection switch |
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| CN201710393656.8A CN107086956A (en) | 2017-05-27 | 2017-05-27 | A kind of implementation method of Ethernet pretection switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468394A (en) * | 2019-09-09 | 2021-03-09 | ***通信有限公司研究院 | Protection switching method, node equipment and storage medium |
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| CN1808926A (en) * | 2005-01-20 | 2006-07-26 | 北京格林威尔科技发展有限公司 | Method and apparatus of protective switching at both ends of non-framed 2M communication channel |
| US20070081465A1 (en) * | 2001-12-17 | 2007-04-12 | Puppa Gary J | System and method for detecting failures and re-routing connections in a communication network |
| CN102355363A (en) * | 2011-08-12 | 2012-02-15 | 中兴通讯股份有限公司 | Method and apparatus for automatic protection switching |
| CN103580886A (en) * | 2012-07-25 | 2014-02-12 | 中兴通讯股份有限公司 | Packet transport network protection switching device and method |
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2017
- 2017-05-27 CN CN201710393656.8A patent/CN107086956A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070081465A1 (en) * | 2001-12-17 | 2007-04-12 | Puppa Gary J | System and method for detecting failures and re-routing connections in a communication network |
| CN1808926A (en) * | 2005-01-20 | 2006-07-26 | 北京格林威尔科技发展有限公司 | Method and apparatus of protective switching at both ends of non-framed 2M communication channel |
| CN102355363A (en) * | 2011-08-12 | 2012-02-15 | 中兴通讯股份有限公司 | Method and apparatus for automatic protection switching |
| CN103580886A (en) * | 2012-07-25 | 2014-02-12 | 中兴通讯股份有限公司 | Packet transport network protection switching device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112468394A (en) * | 2019-09-09 | 2021-03-09 | ***通信有限公司研究院 | Protection switching method, node equipment and storage medium |
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Application publication date: 20170822 |
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