WO2012068791A1

WO2012068791A1 - Method, network device and network management platform for intelligent clock maintenance

Info

Publication number: WO2012068791A1
Application number: PCT/CN2011/071179
Authority: WO
Inventors: 徐健新
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-22
Filing date: 2011-02-22
Publication date: 2012-05-31
Also published as: CN102025418A; CN102025418B

Abstract

The invention discloses a method, network device and network management platform for intelligent clock maintenance. The method includes: receiving an intelligent clock start instruction transmitted by a network management platform; calculating the Synchronization Status Message (SSM) level of each light direction clock according to the extracted SSM byte information of each light direction clock; comparing the SSM level of each light direction clock, and locking a first clock with the optimal SSM level; reporting the locked first clock information to the network management platform for establishing an intelligent clock topology map. The method, network device and network management platform for intelligent clock maintenance provided by the invention effectively avoid the occurrence of network service code error and even the crash phenomenon of a base station resulted from clock configuration error, and ensure the stability of the network; meanwhile the automatic locking of the optimal clock is achieved without the manual operation, and the work efficiency is high.

Description

Intelligent clock maintenance method, network device and network management platform

The present invention relates to the field of optical network technologies, and in particular, to a method, a network device, and a network management platform for intelligent clock maintenance. Background technique

With the rapid development of network information, the optical network composed of a large number of network devices is becoming larger and larger, which is more and more complicated. As a result, the optical network clock configuration is complicated, the workload is large, and the clock maintenance work is heavy. At the same time, the clock configuration process is prone to error. Once the clock configuration is faulty, it is easy to cause the clock to lose lock, or it cannot be locked, which eventually leads to network service error, and even causes the base station to crash.

In an optical network system, the configuration of the clock is currently manually configured. It needs to be manually planned before the configuration, and then the network devices are configured one by one, which takes a long time. Moreover, the artificial clock configuration method has low degree of automation, poor operability of maintenance means, and large workload, and cannot meet high-efficiency work requirements. Summary of the invention

The main purpose of the present invention is to provide a method for intelligent clock maintenance, a network device, and a network management platform, which prevent network service error caused by clock configuration errors, and even cause a base station crash phenomenon to ensure network stability.

The invention provides a method for intelligent clock maintenance, which comprises the steps of:

Receiving an intelligent clock start command sent by the network management platform;

Calculating an SSM level of each optical direction clock according to the extracted SSM byte information of each optical direction clock; Comparing the SSM levels of the optical direction clocks, and locking the SSM level to the optimal first clock;

The locked first clock information is reported to the network management platform for establishing a smart clock topology. Preferably, the comparing the SSM levels of the optical direction clocks, and locking the SSM level to the optimal first clock specifically includes:

Compare the SSM levels of the optical direction clocks;

Locking the SSM level to the optimal first clock, and returning the SSM byte information of the first clock; calculating the SSM level of the first clock according to the SSM byte information of the first clock; and setting the SSM level of the first clock to the first The SSM levels of the unlocked optical clocks are compared to determine that the SSM level of the first clock is optimal.

Preferably, the method for maintaining the smart clock, after reporting the locked first clock information to the network management platform, for establishing the smart clock topology, further includes:

Receiving an SSM byte information unavailable information that locks the first clock;

Comparing the SSM levels of the first unlocked optical direction clocks, and locking the SSM level to the optimal second clock;

The locked second clock information is reported to the network management platform for updating the smart clock topology. Preferably, comparing the SSM levels of the first unlocked optical direction clocks, and locking the second clock with the SSM level being optimal includes:

Comparing the SSM levels of the first unlocked optical direction clocks;

Locking the SSM level to the optimal second clock, and returning the SSM byte information of the second clock; calculating the SSM level of the second clock according to the SSM byte information of the second clock; and setting the SSM level of the second clock to the second The SSM levels of the unlocked optical direction clocks are compared to determine that the SSM level of the second clock is optimal.

Preferably, the SSM levels of the optical direction clocks are not equal to each other.

The invention further provides a network device for intelligent clock maintenance, which comprises: a first receiving module, configured to receive an intelligent clock start command sent by the network management platform, and a calculation module, configured to calculate an SSM level of each optical direction clock according to the extracted SSM byte information of each optical direction clock;

The locking module is configured to compare the SSM levels of the optical direction clocks, and lock the SSM level to an optimal first clock;

The reporting module is configured to report the locked first clock information to the network management platform for establishing an intelligent clock topology.

Preferably, the locking module comprises:

a comparison submodule for comparing SSM levels of the optical direction clocks;

The lock submodule is configured to lock the first clock with an optimal SSM level, and return SSM byte information of the first clock;

a calculation submodule, configured to calculate an SSM level of the first clock according to the SSM byte information of the first clock;

The second comparison submodule is configured to compare the SSM level of the first clock with the SSM level of the first unlocked optical direction clocks to determine that the SSM level of the first clock is optimal.

Preferably, the first receiving module is further configured to receive SSM byte information unavailable information that locks the first clock;

The locking module is further configured to compare the SSM levels of the first unlocked optical direction clocks, and lock the second clock with the optimal SSM level;

The reporting module is further configured to report the locked second clock information to the network management platform for updating the smart clock topology.

Preferably, the first comparison submodule is further configured to compare SSM levels of the first unlocked optical direction clocks;

The locking submodule is further configured to lock a second clock with an SSM level being optimal, and return SSM byte information of the second clock; The calculating submodule is further configured to calculate an SSM level of the second clock according to the SSM byte information of the second clock;

The second comparison submodule is further configured to compare the SSM level of the second clock with the SSM level of the second unlocked optical direction clocks to determine that the SSM level of the second clock is optimal.

The invention further provides a method for intelligent clock maintenance, which comprises:

Sending a smart clock start command to the network device, so that the network device starts the instruction according to the smart clock, locks the clock with the SSM level as the optimal, and reports the locked clock information;

Receiving locked clock information reported by the network device;

Configure the smart clock topology based on the received locked clock information.

The invention further provides a network management platform for intelligent clock maintenance, which comprises:

a sending module, configured to send a smart clock start command to the network device, so that the network device locks the clock with the SSM level as the optimal clock and reports the locked clock information according to the smart clock start command; the second receiving module is configured to receive the network device report Lock clock information;

The configuration module is configured to configure a smart clock topology according to the received locked clock information. It can be seen that, by comparing the SSM levels of the optical direction clocks, the SSM level is locked to the optimal first clock, and the locked first clock information is reported to the network management platform for establishing an intelligent clock topology. The network error is prevented due to clock configuration error, and even the base station crashes, which ensures the stability of the network. At the same time, the automatic locking of the optimal clock is realized, no manual operation is required, and the work efficiency is high. DRAWINGS

1 is a flow chart of an embodiment of a method for clock maintenance of the present invention;

2 is another flow chart of an embodiment of a method for clock maintenance of the present invention;

3 is another flow chart of an embodiment of a method for clock maintenance of the present invention;

4 is a schematic structural diagram of an embodiment of a network device for clock maintenance according to the present invention; 5 is another schematic structural diagram of an embodiment of a clock maintenance network device according to the present invention; FIG. 6 is a flowchart of another implementation of a method for clock maintenance according to the present invention;

7 is a schematic structural view of an optical network system of the present invention;

8 is a schematic diagram showing the relationship between a network device and a clock topology of the present invention;

FIG. 9 is a schematic structural diagram of an embodiment of a network management platform for clock maintenance according to the present invention. detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1 , an embodiment of an intelligent clock maintenance method of the present invention is provided, which includes: Step S101: Receive an intelligent clock start command sent by a network management platform;

Step S102: Synchronize state information according to the extracted optical direction clocks (SSM,

Synchronization Status Message (Byte Synchronization Status Message), which calculates the SSM level of each optical direction clock; Step S103: Compare the SSM levels of the optical direction clocks, and lock the SSM level to the optimal first clock;

Step S104: Report the locked first clock information to the network management platform, so as to establish a smart clock topology relationship table.

An optical network system consists of multiple network devices. Each network device includes one or more optical signal interfaces. The SSM information carried by optical signals in different directions is different. Before calculating the SSM level in each optical direction, optical signals from different optical directions are calculated. Extract the respective SSM information. When calculating the SSM level, the optical link characteristics of the number of nodes, the cost of the optical link, and the shared risk link group ( SRLG) are added to the calculated SSM level on the ITU-T standard algorithm. In the calculation formula. Because the characteristics of these optical links in different optical directions are different, and the clock SSM information in different optical directions is different, the calculated SSM level for each optical direction is unique.

Further, in the foregoing method for maintaining the smart clock, according to the extracted light directions The SSM level of the clock is calculated. The SSM levels of the optical clocks in each optical direction are unequal, that is, the SSM information of each clock is unique. The SSM level is also unique. of. In the foregoing method for maintaining the clock, the SSM algorithm has multiple modes, and only needs to ensure that the SSM level of the different calculated clocks in the final direction is unique. For example, the SSM byte information and the optical link cost are combined to calculate. Because the optical links in different directions have different optical link costs, the SSM byte information is combined with the optical link cost to calculate different directions. The SSM level of the clock is different.

Further, in the foregoing method for maintaining an intelligent clock, the SSM level of each optical direction clock is compared, and the first clock that is optimal for locking the SSM level includes:

Step S201: Comparing SSM levels of the optical direction clocks;

Step S202: Lock the SSM level to the optimal first clock, and return the SSM byte information of the first clock.

Step S203: Calculate an SSM level of the first clock according to the SSM byte information of the first clock.

Step S204: Compare the SSM level of the first clock with the SSM level of each of the first unlocked optical direction clocks, and determine that the SSM level of the first clock is optimal.

In addition, if the SSM level of the first clock is compared with the SSM level of the first unlocked optical direction clock, and the SSM level of the first clock is determined to be not the optimal level, the SSM of each optical direction clock is recalculated and compared. The level of the SSM is the best clock, and the specific steps are the same as the above steps S201 to S204, and details are not described herein.

Further, in the foregoing method for maintaining the smart clock, the information about the locked first clock is reported to the network management platform for establishing the smart clock topology, and the following processing is included: receiving the SSM byte information that locks the first clock Unavailable information; compares the SSM levels of the first unlocked optical direction clocks, and locks the SSM level to the optimal second clock; reports the locked second clock information to the network management platform for updating the smart clock topology Figure. Further, referring to FIG. 3, in the foregoing method for maintaining the smart clock, the SSM level of the first un-locked optical direction clock is compared, and the second clock with the SSM level being optimally locked includes:

Step S301: Comparing SSM levels of the first unlocked optical direction clocks; Step S302: Locking the SSM level to an optimal second clock, and returning SSM byte information of the second clock;

Step S303: Calculate an SSM level of the second clock according to the SSM byte information of the second clock.

Step S304: Compare the SSM level of the second clock with the SSM level of the second unlocked optical direction clock to determine that the SSM level of the second clock is optimal.

In addition, if the SSM level of the second clock is compared with the SSM level of the second unlocked optical direction clock, and the SSM level of the second clock is determined to be not the optimal level, the first unlocked each is recalculated and compared. The SSM level of the optical direction clock is the best clock for the SSM level. The specific steps are the same as those of the foregoing steps S301 to S304, and are not described here.

In the foregoing method for maintaining the smart clock, comparing the SSM levels requires obtaining SSM information according to the ITU-T standard, calculating the SSM level by using the SSM algorithm, and then comparing the SSM levels. According to the ITU-T standard, the SSM level includes the following (but not limited to the following): G.811, G.812 transit office, G.812 local office, and G.813. When calculating the SSM level, the number of nodes passed, the optical link cost, and the optical link characteristics such as SRLG are added to the calculation formula, and the calculated SSM level is unique.

The method for maintaining the smart clock is performed by comparing the SSM levels of the optical clocks to lock the SSM level to the optimal first clock, and reporting the locked first clock information to the network management platform for establishing the smart clock. The topology map effectively prevents network service error caused by clock configuration errors, and even causes the base station to crash, ensuring the stability of the network; at the same time, the automatic locking of the optimal clock is realized, no manual operation is required, and the work efficiency is high. . Referring to FIG. 4, an embodiment of the network device 100 for intelligent clock maintenance of the present invention is provided, which includes: a first receiving module 10, a computing module 20, a locking module 30, and a reporting module 40. The first receiving module 10 is configured to receive an intelligent clock start command sent by the network management platform. The calculation module 20 is configured to calculate an SSM level of each optical direction clock according to the extracted SSM byte information of each optical direction clock. The locking module 30 is configured to compare the SSM levels of the optical direction clocks and lock the first clock with the SSM level being optimal. The upper module 40 is configured to report the locked first clock information to the network management platform for establishing a smart clock topology.

An optical network system consists of multiple network devices. Each network device includes one or more optical signal interfaces. The SSM information carried by optical signals in different directions is different. Before calculating the SSM level in each optical direction, optical signals from different optical directions are calculated. Extract the respective SSM information. In calculating the SSM level, these optical link characteristics are added to the calculation formula for calculating the SSM level on the ITU-T standard algorithm by the number of nodes passing through, the cost of the optical link, and the SRLG level. Because the characteristics of these optical links are different for different optical directions, and the clock SSM information of different optical directions is different, the calculated SSM level for each optical direction is unique.

Further, in the embodiment of the smart clock maintenance network device 100, the SSM level of each optical direction clock is calculated according to the extracted SSM byte information of each optical direction clock, where the extracted SSM information of each optical direction clock is not mutually Equal, that is, the SSM level of each direction clock is unique. In the foregoing method for maintaining the clock, there are various ways to calculate the SSM level of the clock, and it is only necessary to ensure that the SSM level of the different calculated clocks is unique. For example, the SSM byte information and the optical link cost are combined to calculate. Because the optical links in different directions have different optical link costs, the SSM byte information is combined with the optical link cost to calculate different directions. The SSM level of the clock is different.

Further, referring to FIG. 5, in the embodiment of the network device 100 for intelligent clock maintenance, the locking module 30 includes: a first comparison sub-module 31, a locking sub-module 32, a calculation sub-module 33, and a second comparison sub-module 34. The first comparison sub-module 31 is used for the SSM of each optical direction clock. Levels are compared. The locking sub-module 32 is configured to lock the first clock with the SSM level being optimal, and return the SSM byte information of the first clock. The calculating submodule 33 is configured to calculate an SSM level of the first clock according to the SSM byte information of the first clock. The second comparison sub-module 34 is configured to compare the SSM level of the first clock with the SSM level of each of the first unlocked optical direction clocks to determine that the SSM level of the clock is optimal.

In addition, if the SSM level of the first clock is compared with the SSM level of the first unlocked optical direction clock, and the SSM level of the first clock is determined to be not the optimal level, the SSM of each optical direction clock is recalculated and compared. Level, locks the SSM level to the optimal clock.

Further, in the embodiment of the network device 100 for intelligent clock maintenance, the first receiving module 10 is further configured to receive SSM byte information unavailable information for locking the first clock. The locking module 30 is further configured to compare the SSM levels of the first unlocked optical direction clocks to lock the second clock with the optimal SSM level. The upper module 40 is further configured to report the locked second clock information to the network management platform for updating the smart clock topology.

Further, in the embodiment of the network device 100 for intelligent clock maintenance, the first comparison sub-module 31 is further configured to compare the SSM levels of the first unlocked optical direction clocks. The locking sub-module 32 is further configured to lock a second clock with an optimal SSM level and return SSM byte information of the second clock. The calculating submodule 33 is further configured to calculate an SSM level of the second clock according to the SSM byte information of the second clock. The second comparison sub-module 34 is further configured to compare the SSM level of the second clock with the SSM level of the second unlocked optical direction clocks to determine that the SSM level of the second clock is optimal.

In addition, if the SSM level of the second clock is compared with the SSM level of the second unlocked optical direction clock, and the SSM level of the second clock is determined to be not the optimal level, the first unlocked each is recalculated and compared. The SSM level of the optical direction clock locks the SSM level as the optimal clock.

Further, in the foregoing embodiment of the network device 100 for intelligent clock maintenance, the SSM level is For comparison, the SSM information is obtained according to the ITU-T standard, the SSM level is calculated by the SSM algorithm, and then the SSM level is compared. According to the ITU-T standard, the SSM levels include the following (but not limited to the following): G.811, G.812 transit office, G.812 local office, and G.813. When calculating the SSM level, the number of passed nodes, the optical link cost, and the optical link characteristics such as SRLG are added to the calculation formula, and the calculated SSM level is unique.

The embodiment of the network device 100 for intelligent clock maintenance, by comparing the SSM levels of the optical direction clocks, locks the first clock with the best SSM level, and reports the locked first clock information to the network management platform for establishment. The intelligent clock topology map effectively prevents network service errors caused by clock configuration errors, and even causes the base station to crash, ensuring the stability of the network. At the same time, the automatic clock locking is achieved without manual operation. efficient.

Referring to FIG. 6, another method embodiment of intelligent clock maintenance according to the present invention is provided. The method includes: Step S401: Send a smart clock start command to a network device, so that the network device locks the SSM level according to an intelligent clock start command. a clock, and reporting the locked clock information; Step S402, receiving the locked clock information reported by the network device;

Step S403: Configure a smart clock topology according to the received locked clock information.

Further, in another method embodiment of the smart clock maintenance, in the smart clock topology diagram, a clock locked by each network device is recorded, and a schematic diagram of a network device and a clock topology relationship in the entire optical network is attached. Referring to FIG. 7, the optical network includes five network devices, a, b, c, d, and e, which are connected to each other. The network device a is externally connected with a clock A. The network device c is externally connected to the clock network device &, b, c, d, e. After receiving the intelligent clock start command, respectively calculating the clock SSM level of its own different light direction, and locking the SSM level. The optimal clock, and the clock information is locked to the network management platform. In the optical network system, the network devices &, b, c, d, and e respectively lock the clock eight. Therefore, the following relationship is recorded in the intelligent clock topology map configured by the network management platform: network device & ^→ clock A; network device 13 ^→ network device & ^→ clock A; network device c → network device a → clock A; network device d → network Device a→clock A; network design E→network device a→clock A; and a schematic diagram of the relationship between the network device and the clock topology as shown in FIG. 8 is attached, and the icon indicates the direction of the clock source locked by each network device.

Configure intelligent clock topology maps, including building smart clock topologies and updating smart clock topologies. When the lock clock information reported by the network device is received for the first time, the smart clock topology is established according to the locked clock information; after receiving the lock clock information reported by the receiving network device, the smart clock extension is updated according to the reported locked clock information. Park map.

In another embodiment of the smart clock maintenance, the smart clock start command is sent to the network device, so that the network device locks the clock with the SSM level as the optimal clock according to the smart clock start command, and configures according to the locked clock phenomenon reported by the network device. The intelligent clock topology map effectively prevents the network service error caused by the intelligent clock configuration error, and even causes the base station to crash, ensuring the stability of the network; at the same time, the automatic locking of the optimal clock is realized, and no manual operation is required. high working efficiency.

Referring to FIG. 9, an embodiment of a network management platform 200 for intelligent clock maintenance of the present invention is provided, which includes: a sending module 210, a second receiving module 220, and a configuration module 230. The sending module 210 is configured to send a smart clock start command to the network device, so that the network device locks the clock with the SSM level as the optimal clock according to the smart clock start command, and reports the locked clock information. The second receiving module 220 is configured to receive the locked clock information reported by the network device. The configuration module 230 is configured to configure a smart clock topology according to the received locked clock information.

Further, in the embodiment of the network management platform 200 for intelligent clock maintenance, in the smart clock topology diagram, the clock locked by each network device is recorded, and the relationship between the network device and the clock topology in the entire optical network is attached. . Referring to FIG. 7, the optical network includes five network devices, a, b, c, d, and e, which are connected to each other. The network device a is externally connected with a clock A, and the network device c is externally connected with a clock B. After receiving the intelligent clock start command, the network devices &, b, c, d, and e respectively calculate the clock SSM level of their own optical direction, lock the clock with the best SSM level, and report the locked clock information to the network management. platform. In the optical network system, the network Devices a, b, c, d, and e respectively lock the clock eight. Therefore, the following relationship is recorded in the intelligent clock topology map configured by the network management platform: network device a→clock A; network device b→network device a→clock A; network device c→network device a→clock A; network device d→network Device a→clock A; network device e→network device a→clock A; and a schematic diagram of the relationship between the network device and the clock topology as shown in FIG. 8 is attached, and the icon indicates the direction of the clock source locked by each network device.

In the embodiment of the network management platform 200 for intelligent clock maintenance, the smart clock start command is sent to the network device, so that the network device locks the clock with the SSM level as the optimal clock according to the smart clock start command, and according to the locked clock phenomenon reported by the network device. The intelligent clock topology is configured to effectively prevent network service errors caused by clock configuration errors, and even cause the base station to crash, ensuring the stability of the network. At the same time, the automatic clock locking is achieved without manual operation. high working efficiency.

It should be understood that the above is only a preferred embodiment of the present invention, and thus the scope of the invention is not limited thereby, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are used directly or indirectly. Other related technical fields are equally included in the scope of patent protection of the present invention.

Claims

Claim

A method for maintaining an intelligent clock, comprising the steps of:

Calculating an SSM level of each optical direction clock according to the extracted SSM byte information of each optical direction clock;

Comparing the SSM levels of the optical direction clocks, and locking the SSM level to the optimal first clock;

The locked first clock information is reported to the network management platform for establishing a smart clock topology.

2. The method of claim 1, wherein the comparing the SSM levels of the optical direction clocks to the SSM level of the optical clock is:

Compare the SSM levels of the optical direction clocks;

The method of the intelligent clock maintenance according to claim 1, wherein after the first clock information is reported to the network management platform for establishing the smart clock topology, the method further includes:

The locked second clock information is reported to the network management platform for updating the smart clock topology.

The intelligent clock maintenance method according to claim 3, wherein the SSM levels of the first unlocked optical direction clocks are compared, and the SSM level is locked to be optimal. The second clock specifically includes:

Comparing the SSM levels of the first unlocked optical direction clocks;

The method for maintaining an intelligent clock according to any one of claims 1 to 4, wherein the SSM levels of the optical direction clocks are not equal to each other.

6. A network device for intelligent clock maintenance, characterized in that:

a first receiving module, configured to receive an intelligent clock start command sent by the network management platform, and a calculating module, configured to calculate an SSM level of each optical direction clock according to the extracted SSM byte information of each optical direction clock;

The intelligent clock maintenance network device according to claim 6, wherein the locking module comprises:

The second comparison submodule is configured to compare the SSM level of the first clock with the SSM level of each of the first unlocked optical direction clocks, and determine that the SSM level of the first clock is optimal.

The intelligent clock maintenance network device according to claim 6, wherein the first receiving module is further configured to receive SSM byte information unavailable information that locks the first clock;

The intelligent clock maintenance network device according to claim 8, wherein the first comparison submodule is further configured to compare SSM levels of the first unlocked optical direction clocks;

The locking submodule is further configured to lock a second clock with an optimal SSM level, and return SSM byte information of the second clock;

The calculating submodule is further configured to calculate an SSM level of the second clock according to the SSM byte information of the second clock;

The intelligent clock maintenance network device according to any one of claims 6 to 9, wherein the SSM levels of the optical direction clocks are not equal to each other.

11. A method for maintaining intelligent clocks, comprising:

Receiving locked clock information reported by the network device;

A network management platform for intelligent clock maintenance, comprising: a sending module, configured to send a smart clock start command to a network device, so that the network device root According to the intelligent clock start command, the SSM level is locked to the optimal clock, and the locked clock information is reported; the second receiving module is configured to receive the locked clock information reported by the network device;

The configuration module is configured to configure a smart clock topology according to the received locked clock information.