CN107483138B - Cluster Clock management system and management method - Google Patents
Cluster Clock management system and management method Download PDFInfo
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- CN107483138B CN107483138B CN201710863048.9A CN201710863048A CN107483138B CN 107483138 B CN107483138 B CN 107483138B CN 201710863048 A CN201710863048 A CN 201710863048A CN 107483138 B CN107483138 B CN 107483138B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
- H04J3/0691—Synchronisation in a TDM node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0679—Clock or time synchronisation in a network by determining clock distribution path in a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
- H04J3/0688—Change of the master or reference, e.g. take-over or failure of the master
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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
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
- H04L41/064—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis involving time analysis
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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
- H04L41/0677—Localisation of faults
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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
- H04L41/12—Discovery or management of network topologies
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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
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention discloses a kind of cluster Clock management system and management methods, are related to multi-chassis cascading router field, including clock interface comprising clock status upstream Interface and clock control downstream interface.More frame router clusters, are divided into multiple clock subnet members, and each clock subnet member is equipped with the exchange frame of an acquisition clock status information.Timing source module comprising the first timing source and the second timing source introduced from the exchange frame of clock subnet member.Clock control plane is used to obtain clock planning topological diagram and generates and issue clock configuration.Clock control planar collecting clock status information, and generate clock operation topological diagram, if clock plans that topological diagram is different with clock operation topological diagram, it recalculates to obtain new clock planning topological diagram, realizes the switching of clock path between switching and the exchange frame between the first timing source and the second timing source.The present invention is able to achieve the synchronization of whole clock and clock path protection of more frame router clusters.
Description
Technical field
The present invention relates to multi-chassis cascading router fields, and in particular to a kind of cluster Clock management system and management method.
Background technique
With development communication technologies, the computing capability, transfer capability and port density of core backbone network equipment are all mentioned
Higher requirement is gone out.For conventional router in reliability, scalability etc. has the difficulty for being difficult to go beyond.More frame router collection
Group becomes an important development direction of change of technique.
More frame router clusters are from 1+4 cluster to 2+8 cluster, 4+16 cluster direction evolution.By taking 4+16 cluster as an example, table
4 exchange frames are shown with, hang 4 business frames under each exchange frame, altogether 16 business frames.Wherein, the access of business is business frame,
There are service access board, such as 40G board on business frame, 100G board etc., the only access of business do not exchange.Exchange
Board is only exchanged on frame, does not have service access board.Exchange frame is connected with all business frames, and the exchange of business is complete in exchange frame
At, such as will be on the repeat in work of business frame 1 to business frame 2.
As the quantity of multi-chassis cascading center is more and more.The management of clock path becomes extremely complex between circle, when
When clock path breaks down between frame and frame, the clock path management of multi-chassis cascading how is solved, clock path is protected and cut
It changes, guarantees that the clock of cluster entirety is synchronous to the full extent, be the problem for needing to solve at present.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide one kind to be able to achieve more frame router clusters
Whole clock is synchronous and the cluster Clock management system of clock path protection.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of cluster Clock management system, comprising:
Clock interface comprising clock status upstream Interface and clock control downstream interface, the clock status uplink connect
Mouth and clock control downstream interface share identical clock information model；
More frame router clusters, are divided into multiple clock subnet members, and each clock subnet member is equipped with a friendship
Frame is changed, the exchange frame is used to acquire the clock status information of corresponding clock subnet member；
Timing source module comprising the first timing source and the second timing source, first timing source and the second timing source from
The exchange frame of the clock subnet member of more frame router clusters introduces；And
Clock control plane is used to carry out clock path between the exchange frame and plans, clock planning is calculated and opens up
Figure is flutterred, then clock configuration is generated by clock planning topological diagram, by the clock control downstream interface to each friendship
It changes frame and carries out issuing for clock configuration；It is all described that the clock control plane also passes through the clock status upstream Interface collection
The clock status information of exchange frame acquisition, and according to the clock status information, generate more frame router clusters
Clock runs topological diagram, if clock planning topological diagram and clock operation topological diagram are different, when recalculating to obtain new
Clock plans topological diagram, realizes clock path between switching and the exchange frame between the first timing source and the second timing source
Switching.
Based on the above technical solution, the clock control plane is more according to the clock status acquisition of information
All timing source clock status of frame router cluster and timing source clock SSM information are believed according to the timing source clock status
Breath and timing source clock SSM information generate the clock operation topological diagram of more frame router clusters.
Based on the above technical solution, the timing source clock status includes dropout and the normal two kinds of shapes of signal
State, the clock control plane determine that position occurs for failure according to the state change of the timing source clock status.
Based on the above technical solution, each clock subnet member is hung over multiple under the exchange frame under including
Business frame, the exchange frame acquire the clock status information from the business frame by the clock status upstream Interface, and
The exchange frame controls the business frame by the clock control downstream interface and configures progress corresponding actions to the clock.
At the same time, the object of the invention is also to provide a kind of whole clock for being able to achieve more frame router clusters is synchronous
With the cluster clock management method of clock path protection.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of management method using above-mentioned cluster Clock management system, method includes the following steps:
Each exchange frame in more frame router clusters acquires the clock status information of corresponding clock subnet member；
Between clock control Floorplanning exchange frame clock path plan, be calculated clock planning topological diagram, then by when
Clock plans that topological diagram generates clock configuration, carries out clock configuration to each exchange frame by clock control downstream interface and issues；
Clock control plane collects the clock status information of all exchange frame acquisitions, and root by clock status upstream Interface
According to clock status information, the clock operation topological diagram of more frame router clusters is generated；And
Judge whether clock planning topological diagram and clock operation topological diagram are identical, and if they are the same, cluster Clock management system is protected
It holds standing state to continue to run, if it is different, clock control plane determines that position occurs for failure, and new clock is calculated again
Plan topological diagram, clock path cuts between the switching and the exchange frame between the first timing source of realization and the second timing source
It changes.
Based on the above technical solution, exchange frame acquires clock status from business frame by clock status upstream Interface
Information, then the clock status information that all exchange frames acquire is collected by clock status upstream Interface by clock control plane；When
Clock plane issues clock with postponing, and exchange frame is received by clock control downstream interface and responds clock configuration.
Based on the above technical solution, clock control plane is according to the more frame router clusters of clock status acquisition of information
All line clock states and line clock SSM information, according to all line clock status informations and line clock SSM information
Generate the clock operation topological diagram of more frame router clusters.
Based on the above technical solution, line clock state includes dropout and the normal two states of signal, when
Clock plane determines that position occurs for failure according to the state change of line clock state.
Compared with the prior art, the advantages of the present invention are as follows:
Cluster Clock management system of the invention includes clock control plane, and clock control plane is used to swap
Clock path is planned between frame, clock planning topological diagram is calculated, then generate clock configuration by clock planning topological diagram, is passed through
Clock control downstream interface carries out clock configuration to each exchange frame and issues.Clock control plane also passes through clock status uplink
Interface collects the clock status information of all exchange frame acquisitions, and according to clock status information, generates more frame router clusters
Clock runs topological diagram, if clock plans that topological diagram is different with clock operation topological diagram, clock control plane determines failure
Position, and new clock planning topological diagram is calculated again, realize the switching between the first timing source and the second timing source with
And between the exchange frame clock path switching.So as to the entire cluster all devices clock of centralized management, can collect
The internal whole clock for realizing cluster of group is synchronous, realizes the clock path protection of the inside of cluster.
Detailed description of the invention
Fig. 1 is the structural block diagram of clock control plane and exchange frame in the present invention；
Fig. 2 is that the clock in the present invention plans topological diagram；
Fig. 3 is that the clock in the present invention runs topological diagram；
Fig. 4 is clock path schematic diagram when working normally in the present invention between exchange frame；
Fig. 5 is clock path schematic diagram when breaking down in the present invention between exchange frame.
Fig. 6 is the flow chart of the management method of cluster Clock management system in the present invention.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Shown in Figure 1, the present invention provides a kind of cluster Clock management system comprising clock interface, more frame routers
Cluster, timing source module and clock control plane.
Clock interface includes clock status upstream Interface and clock control downstream interface, clock status upstream Interface and clock
Control downstream interface shares identical clock information model, and data structure is identical.When the data structure is in data feedback channel, representative
Be clock status information.In down going channel, representative is clock configuration information.Data structure is as shown in the table:
More than the 1 frame router cluster data structure table of table
In upper table, this clock subnet member exchange frame clock work mode lock refers to locking, and hold refers to keeping,
Free refers to free oscillation.This clock subnet member line clock state los refers to that dropout, normal refer to signal
Normally.SSM (Synchronous Status Message Synchronication status message), is used to indicate locked clock source quality etc.
Grade, and whether can be used for locking.
More frame router clusters are divided into multiple clock subnet members, and each clock subnet member is equipped with an exchange frame, hands over
Frame is changed for acquiring the clock status information of corresponding clock subnet member.More frame router clusters in the present invention are 4+16 collection
Group, is divided into 4 clock subnet members, and each clock subnet member is equipped with an exchange frame, 4 business are hung under each exchange frame
Frame.In each clock subnet member, exchange frame acquires clock status information from business frame by clock status upstream Interface.
Timing source module includes the first timing source and the second timing source, and the first timing source and the second timing source can be respectively from more
The exchange frame of the different clock subnet member of two of frame router cluster introduces.Second timing source is the backup of the first timing source,
When the first timing source breaks down, cluster Clock management system can enable the second timing source.
Clock control plane is planned for carrying out clock path between the exchange frame, and clock planning topology is calculated
Figure, the process of calculating are based on YD/T1267 national standard, this is the standard of clock, refer specifically to the selection of clock source, thus the present invention this
In be no longer described in detail.Clock planning topological diagram can be found in shown in Fig. 2, then generate clock configuration by clock planning topological diagram, when passing through
Clock downstream interface carries out clock configuration to each exchange frame and issues.
Clock control plane also passes through the clock status information that clock status upstream Interface collects all exchange frame acquisitions, and
According to clock status information, the clock operation topological diagram of more frame router clusters is generated, clock operation topological diagram can be found in Fig. 3 institute
Show, clock operation topological diagram can only react present clock working condition, so not having clock backup path on figure.Under normal circumstances
Clock runs topological diagram and clock planning topological diagram should be identical, if it is different, certain link fails are just represented, when needing
Clock plane is checked: whether access problems, if need to plan again.
Specifically, reference table 1 is it is found that when data structure is in data feedback channel, representative is clock status information.Clock control
Plane all line clock states of more frame router clusters according to clock status acquisition of information and line clock SSM letter
Breath.The initial clock configuration that clock control planar junction intersection group clock network management/order line is collected, then according to line clock shape
State information and line clock SSM information generate the clock operation topological diagram of more frame router clusters.
Then, judge whether clock planning topological diagram and clock operation topological diagram are identical, if they are the same, cluster Clock management system
Blanket insurance is held standing state and is continued to run, if it is different, clock control plane determines that position occurs for failure, and is calculated again new
Clock plans topological diagram, realizes clock path between switching and the exchange frame between the first timing source and the second timing source
Switching.
Its specific process can refer to Fig. 4 and Fig. 5, while can refer to three following tables.
2 clock status upstream Interface information table of table
By the information in table 2, the initial clock that clock control planar junction intersection group clock network management/order line is collected is matched
It sets, topology is then run according to the clock that line clock status information and line clock SSM information generate more frame router clusters
Then figure will be planned that topological diagram generates clock configuration and carries out clock to each exchange frame by clock control downstream interface by clock
Configuration issues.Clock control plane can collect the clock status information of exchange frame acquisition in real time, but to each exchange
After frame carries out the issuing of clock configuration, afterwards during only after clock status information changes, just can be secondary again
At with issue clock configuration, if there is no variations for clock status information, it will keep the clock issued configuration to carry out normal
Work.
3 clock control downstream interface information table of table
With reference to Fig. 4 and table 3, expression be cluster Clock management system worked well when situation, respectively with exchange frame 1,
Exchange frame 2, exchange frame 3 and exchange frame 4 indicate exchange frame corresponding to the 4 clock subnet members divided.First timing source is from friendship
Subnet member where changing frame 1 introduces, and the subnet member where the second timing source from exchange frame 3 introduces.Clock control planar junction intersection
The initial clock configuration that group's clock network management/order line is collected, determines between all line clock SSM information and exchange frame
Upstream-downstream relationship.According to the upstream-downstream relationship between line clock SSM information and exchange frame, that is, it can determine each exchange frame
Current lock source.Wherein the priority of line clock SSM information is higher than the upstream-downstream relationship between exchange frame, that is to say, that current
The determination of locking source can pay the utmost attention to line clock priority.Normal clock path at this time are as follows: 1 → exchange frame of exchange frame 4, exchange
1 → exchange frame of frame, 2 → exchange frame 3.
When appearance failure as shown in Figure 5.Physical connection between exchange frame 1 and exchange 2 breaks down, and (break fibre, laser
Device is without output etc.).Exchange frame 2 and exchange frame 3 can not be synchronized to the clock of exchange frame 1 at this time, need to change clock path.By
In failure has occurred, corresponding clock status information can also be changed correspondingly.Clock control plane passes through clock status uplink at this time
Interface collects the clock status information of all exchange frame acquisitions, a new clock planning topological diagram is recalculated, by new
Clock planning topological diagram generates new clock configuration again, is then carried out by clock control downstream interface to each exchange frame new
Clock configuration issue, realize the switching between the first timing source and the second timing source and the clock path between exchange frame
Switching.Clock control plane enables the second timing source at this time, and exchange frame 2 and exchange frame 3 are synchronized on the second timing source.Because
Second timing source is the backup of the first timing source, although physical connection breaks down between exchange frame 1 and exchange frame 2, is passed through
The switching of clock path still can guarantee that the clock of entire cluster is synchronous.
If route clock status will be sent out in the upstream data of exchange frame 2 in addition, failure as shown in Figure 5 has occurred
It is raw to change, normally become dropout from signal.Therefore clock control plane is based on line clock state change and is known that event
Where barrier occurs.
Shown in Figure 6, the present invention also provides a kind of management method using above-mentioned cluster Clock management system, this method
The following steps are included:
S1. each exchange frame in more frame router clusters acquires the clock status letter of corresponding clock subnet member
Breath；
S2. between clock control Floorplanning exchange frame clock path plan, be calculated clock planning topological diagram, then by
Clock plans that topological diagram generates clock configuration, is carried out under clock configuration by clock control downstream interface to each exchange frame
Hair；
S3. clock control plane collects the clock status information of all exchange frame acquisitions by clock status upstream Interface,
And according to clock status information, the clock operation topological diagram of more frame router clusters is generated；
S4. judge whether clock planning topological diagram and clock operation topological diagram are identical, if they are the same, cluster Clock management system
Standing state is kept to continue to run, if it is different, clock control plane determines that position occurs for failure, and when being calculated new again
Clock plans topological diagram, realizes clock path between switching and the exchange frame between the first timing source and the second timing source
Switching.
Specifically, exchange frame by clock status upstream Interface from business frame acquire clock status information, then by when clock
Plane processed collects the clock status information of all exchange frame acquisitions by clock status upstream Interface；When clock control plane issues
With postponing, exchange frame is received by clock control downstream interface and responds clock configuration clock.Specifically, exchange frame is receiving clock
With postponing, lock, free or hold can be set for the operating mode of this clock subnet member according to clock configuration, then obtained
The input source entry number of this clock subnet member and the specifying information of each entry, then judge whether it is business frame clock source,
If it is not, then controlling the clock hardware of the exchange frame, clock is extracted from corresponding clock port, if then to business frame downstream interface
Configured, notify that corresponding business frame carries out clock recovery, corresponding business frame is received with postponing control clock hardware, from it is corresponding when
Clock port recovered clock, and give exchange frame.
Clock control plane according to all timing source clock status of the more frame router clusters of clock status acquisition of information and
Timing source clock SSM information generates more frame routers according to all timing source clock status information and timing source clock SSM information
The clock of cluster runs topological diagram.Wherein, timing source clock status includes dropout and the normal two states of signal, when clock
Plane processed can determine that position occurs for failure according to the state change of timing source clock status.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of cluster Clock management system characterized by comprising
Clock interface comprising clock status upstream Interface and clock control downstream interface, the clock status upstream Interface and
Clock control downstream interface shares identical clock information model；
More frame router clusters are divided into multiple clock subnet members, and each clock subnet member is equipped with an exchange frame,
The exchange frame is used to acquire the clock status information of corresponding clock subnet member；
Timing source module comprising the first timing source and the second timing source, first timing source and the second timing source respectively from
The exchange frame of the different clock subnet member of two of more frame router clusters introduces, and the second timing source is the standby of the first timing source
Part；And
Clock control plane is used to carry out clock path between the exchange frame and plans, clock planning topological diagram is calculated,
Again by the clock planning topological diagram generate clock configuration, by the clock control downstream interface to each exchange frame into
Row clock configuration issues；The clock control plane also passes through the clock status upstream Interface and collects all exchange frames
The clock status information of acquisition, and according to the clock status information, generate the clock fortune of more frame router clusters
Row topological diagram recalculates to obtain new clock planning if the clock plans that topological diagram is different with clock operation topological diagram
Topological diagram realizes the switching of clock path between switching and the exchange frame between the first timing source and the second timing source.
2. cluster Clock management system as described in claim 1, it is characterised in that: the clock control plane according to it is described when
All timing source clock status of more frame router clusters and timing source clock SSM information described in clock state information acquisition, according to
The timing source clock status information and timing source clock SSM information generate the clock operation topology of more frame router clusters
Figure.
3. cluster Clock management system as claimed in claim 2, it is characterised in that: the timing source clock status includes signal
It loses and the normal two states of signal, the clock control plane determines event according to the state change of the timing source clock status
Position occurs for barrier.
4. cluster Clock management system as described in claim 1, it is characterised in that: each clock subnet member includes lower extension
Multiple business frames under the exchange frame, the exchange frame are acquired by the clock status upstream Interface from the business frame
The clock status information, and the exchange frame controls the business frame to the clock by the clock control downstream interface
Configuration carries out corresponding actions.
5. a kind of management method using cluster Clock management system described in claim 1, which is characterized in that this method includes
Following steps:
Each exchange frame in more frame router clusters acquires the clock status information of corresponding clock subnet member；
Clock path is planned between clock control Floorplanning exchange frame, clock planning topological diagram is calculated, then advised by clock
It draws topological diagram and generates clock configuration, clock configuration is carried out to each exchange frame by clock control downstream interface and is issued；
Clock control plane collects the clock status information of all exchange frames acquisition by clock status upstream Interface, and according to when
Clock status information generates the clock operation topological diagram of more frame router clusters；And
Judge whether clock planning topological diagram and clock operation topological diagram are identical, if they are the same, cluster Clock management system keeps existing
It is stateful to continue to run, if it is different, clock control plane determines that position occurs for failure, and new clock planning is calculated again
Topological diagram realizes the switching of clock path between switching and the exchange frame between the first timing source and the second timing source,
First timing source and the second timing source are introduced from the exchange frame of two different clock subnet members of more frame router clusters respectively,
Second timing source is the backup of the first timing source.
6. management method as claimed in claim 5, it is characterised in that: exchange frame passes through clock status upstream Interface from business frame
Clock status information is acquired, then collects the clock of all exchange frame acquisitions by clock status upstream Interface by clock control plane
Status information；Clock control plane issues clock with postponing, and exchange frame is received by clock control downstream interface and responds clock
Configuration.
7. management method as claimed in claim 5, it is characterised in that: clock control plane is more according to clock status acquisition of information
All line clock states of frame router cluster and line clock SSM information, according to all line clock status informations and line
Road clock SSM information generates the clock operation topological diagram of more frame router clusters.
8. management method as claimed in claim 6, it is characterised in that: line clock state includes that dropout and signal are normal
Two states, clock control plane determine that position occurs for failure according to the state change of line clock state.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863048.9A CN107483138B (en) | 2017-09-22 | 2017-09-22 | Cluster Clock management system and management method |
| BR112019028079-0A BR112019028079A2 (en) | 2017-09-22 | 2018-08-27 | cluster clock management system, and, management method. |
| PCT/CN2018/102394 WO2019056917A1 (en) | 2017-09-22 | 2018-08-27 | Cluster clock management system and management method |
| PH12020550001A PH12020550001A1 (en) | 2017-09-22 | 2020-01-02 | Cluster clock management system and management method |
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| CN201710863048.9A CN107483138B (en) | 2017-09-22 | 2017-09-22 | Cluster Clock management system and management method |
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| CN107483138B true CN107483138B (en) | 2019-04-16 |
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| BR (1) | BR112019028079A2 (en) |
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| CN107483138B (en) * | 2017-09-22 | 2019-04-16 | 烽火通信科技股份有限公司 | Cluster Clock management system and management method |
| CN108599916A (en) * | 2018-05-10 | 2018-09-28 | 烽火通信科技股份有限公司 | A kind of cluster internal clock wiring system and clock synchronizing method |
| CN113131997B (en) | 2019-12-31 | 2022-09-02 | 华为技术有限公司 | Method, device and system for protecting connection of electrical layer subnet |
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| CN101562490B (en) * | 2009-05-31 | 2013-01-30 | 华为技术有限公司 | Method for clock synchronization as well as equipment frame and system thereof |
| JP6147467B2 (en) * | 2011-11-14 | 2017-06-14 | 富士通株式会社 | Frame transmission apparatus and synchronization method |
| WO2012167572A1 (en) * | 2011-11-25 | 2012-12-13 | 华为技术有限公司 | Polybox clustered optical network switching node, optical burst synchronization method and line frame |
| CN105991204A (en) * | 2015-01-28 | 2016-10-05 | 中兴通讯股份有限公司 | Clock synchronization method and cluster routing system |
| CN106533771B (en) * | 2016-11-24 | 2019-12-06 | 新华三技术有限公司 | Network equipment and control information transmission method |
| CN107483138B (en) * | 2017-09-22 | 2019-04-16 | 烽火通信科技股份有限公司 | Cluster Clock management system and management method |
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2018
- 2018-08-27 WO PCT/CN2018/102394 patent/WO2019056917A1/en active Application Filing
- 2018-08-27 BR BR112019028079-0A patent/BR112019028079A2/en unknown
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2020
- 2020-01-02 PH PH12020550001A patent/PH12020550001A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309122A (en) * | 2007-05-17 | 2008-11-19 | 华为技术有限公司 | Clock track relation establishing method and clock track relation computing apparatus |
| US8887117B1 (en) * | 2013-10-07 | 2014-11-11 | Taiwan Semiconductor Manufacturing Company Ltd. | Register clustering for clock network topology generation |
| CN107018015A (en) * | 2017-03-15 | 2017-08-04 | 烽火通信科技股份有限公司 | A kind of router cluster network element management method and cluster routers |
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| Publication number | Publication date |
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| WO2019056917A1 (en) | 2019-03-28 |
| CN107483138A (en) | 2017-12-15 |
| PH12020550001A1 (en) | 2020-10-12 |
| BR112019028079A2 (en) | 2020-07-28 |
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