CN111464342A - Distributed routing convergence method and system for network equipment management information - Google Patents
Distributed routing convergence method and system for network equipment management information Download PDFInfo
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L12/46—Interconnection of networks
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a method and a system for converging a distributed route of network equipment Management information, relating to the field of route convergence of PTN equipment, wherein the method comprises the following steps that a switching network board in the PTN equipment receives first MCC (Management Communication Channel) corresponding to the number of network elements, detects the number of the first MCC and judges: when the number of the first MCC is less than a preset threshold value, the switching network board sends all the first MCC to a network element management board, and the network element management board performs port convergence on all the first MCC; when the number of the first MCCs is larger than the preset threshold value, the switch network board forwards the first MCCs exceeding the preset threshold value to the capacity expansion routing board, the capacity expansion routing board performs port aggregation on the first MCCs exceeding the threshold value to obtain a second MCC, the second MCC is fed back to the switch network board, the switch network board sends the second MCC and the first MCCs which are not processed by the capacity expansion routing board to a network element management board together, and the network element management board performs port aggregation on the first MCCs and the second MCCs.
Description
Technical Field
The invention relates to the field of PTN (packet transport network) equipment route convergence, in particular to a network equipment management information distributed route convergence method and a network equipment management information distributed route convergence system.
Background
When a Packet enters a Network, a short mark with a fixed length is distributed to the Packet, and the mark and the Packet are packaged together, and in the whole forwarding process, a Switching node only forwards the Packet according to the mark.
ITU-T (international telecommunication union telecommunication standards branch office, ITU-T for ITU telecommunication standardization Sector) originally proposed T-MP L S, which extended a subset of functions of IETF MP L S for meeting connection-oriented requirements of Transport networks (such as OAM (Operation maintenance management) and protection, etc.).
Therefore, in the OAM mechanism of PTN, it is managed in the form of network elements, each representing an end device, with an independent management IP address. Further, an MCC (Management Communication Channel) is set to implement transmission of Management data such as a control command, service configuration, and alarm performance between maintenance endpoints, so as to implement network Management. The transmission of the management data is based on a TCP/IP protocol, and each network element of the PTN network not only terminates the data of the network element, but also is responsible for providing routing and forwarding functions for the data of the next hop, so as to ensure that the data of the network management server can arrive at any target network element in the network hop by hop, and vice versa.
In order to use the MCC, firstly, the PTN device implements encapsulation of the MCC using an Open Shortest Path First (OSPF) protocol, so as to manage IP routing of data, and both routing and data forwarding are completed by a CPU of the device, that is, software routing and software forwarding.
The standard board card-inserted PTN device has an NMU (network element management disk) to complete the management of the whole network element, and the IP routing protocol OSPF of the management data, i.e. the aggregation and convergence of MCC, is also implemented on this NMU board. The number of ports supported by OSPF is the number of physical ports of the device, i.e. the number of MCC entries received initially, and one MCC corresponds to one physical port. A physical port of one device can only be connected to another device, so there may only be one neighbor on one physical port. Because the physical ports are always limited, the CPU only needs to select the capacity of routing operation and data forwarding for the number of the physical ports for cost.
However, as shown in fig. 1, in the case of transparent transmission of a metropolitan area network, a physical port of a central office PTN device needs to manage many remote miniaturized PTN devices through the metropolitan area network, the method is to make the physical port support multiple MCCs, and distinguish them by using a V L AN label, the metropolitan area network is distributed to remote ends according to a V L AN label, and each MCC V L AN is used to manage one remote end.
In this application scenario, due to the distribution of V L AN, each MCC V L AN of a physical port of a device is connected to another device, that is, each MCC V L AN corresponds to a neighbor, so there are many neighbors on a physical port.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for converging a network device management information distributed route, which can strengthen the function of converging the PTN device to the distributed route, support more objective MCC convergence and further support more remote ends to be managed. .
To achieve the above object, in a first aspect, an embodiment of the present invention provides a method for aggregating distributed routes of network device management information, including:
the switching network board in the PTN device receives a first MCC (management communication Channel) corresponding to the number of network elements, detects the number of the first MCC, and determines:
when the number of the first MCC is less than a preset threshold value, the switching network board sends all the first MCC to a network element management board, and the network element management board performs port convergence on all the first MCC;
when the number of the first MCCs is larger than the preset threshold value, the switch network board forwards the first MCCs exceeding the preset threshold value to the capacity expansion routing board, the capacity expansion routing board performs port aggregation on the first MCCs exceeding the threshold value to obtain a second MCC, the second MCC is fed back to the switch network board, the switch network board sends the second MCC and the first MCCs which are not processed by the capacity expansion routing board to a network element management board together, and the network element management board performs port aggregation on the first MCCs and the second MCCs.
As a preferred embodiment, the capacity expansion routing board is provided with an upper capacity expansion limit, and when the number of the first MCCs exceeding a preset threshold is greater than the upper capacity expansion limit, the sum of the capacity expansion upper limits of the plurality of capacity expansion routing boards is set to be greater than the number exceeding the threshold;
the exchange network board sends the first MCCs exceeding the threshold number to each capacity expansion routing board respectively, and the number of the first MCCs received by each capacity expansion routing board is smaller than the capacity expansion upper limit;
and the switching network board sends the second MCC of each expansion routing network board and the first MCC which is not processed by the expansion routing board to a network element management board together.
As a preferred embodiment, the network element includes a routing device directly connected to the PTN device through a physical link and a routing device directly connected to the PTN device through a virtual link.
As a preferred embodiment, the port aggregation is a route aggregation implemented by the PTN device using the OSPF protocol.
As a preferred embodiment, the first MCC is network management information of a corresponding network element, and the network management information includes a control command, a service configuration, and an alarm performance.
In a second aspect, an embodiment of the present invention further provides a network device management information distributed route aggregation system:
the network element management board is used for carrying out port aggregation on all the first MCCs, or carrying out port aggregation on the second MCC and the first MCCs which are not processed by the capacity expansion routing board;
a capacity expansion routing board for carrying out port convergence on the first MCCs exceeding the preset threshold value to obtain second MCCs and feeding back the second MCCs to the switching network board
A switching network board, configured to receive a first MCC (management communication Channel) corresponding to the number of network elements received by the PTN device, detect the number of the first MCC, and forward the first MCC according to the number of the first MCC:
-sending all first MCCs to the element management board when the number of first MCCs is smaller than a preset threshold.
When the number of the first MCCs is larger than the preset threshold, the switch network board forwards the first MCCs exceeding the threshold number to a self-expansion route board, and sends the second MCC to a network element management board together with the first MCCs which are not processed by the self-expansion route board.
As a preferred embodiment, the capacity expansion routing board is provided with an upper capacity expansion limit, and when the number of the first MCCs exceeding a preset threshold is greater than the upper capacity expansion limit, the sum of the capacity expansion upper limits of the plurality of capacity expansion routing boards is set to be greater than the number exceeding the threshold;
the exchange network board sends the first MCCs exceeding the threshold number to each capacity expansion routing board respectively, and the number of the first MCCs received by each capacity expansion routing board is smaller than the capacity expansion upper limit;
and the switching network board sends the second MCC of each expansion routing network board and the first MCC which is not processed by the expansion routing board to a network element management board together.
As a preferred embodiment, the network element includes a routing device directly connected to the PTN device through a physical link and a routing device directly connected to the PTN device through a virtual link.
As a preferred embodiment, the ports converge to route management implemented by the PTN device using the OSPF protocol.
As a preferred embodiment, the first MCC is network management information of a corresponding network element, and the network management information includes a control command, a service configuration, and an alarm performance.
Compared with the prior art, the invention has the advantages that:
the network equipment management information distributed route aggregation method and the system directly utilize other interfaces to add a new auxiliary board card, namely an expansion route board, on the existing PTN equipment, and compared with the traditional method of directly replacing the whole equipment or replacing a high-performance NMU board, the method and the system are more convenient and efficient to modify, and simultaneously save the cost. The capacity expansion routing board bears part of MCC convergence/port convergence work belonging to the network element management board, so that a user can support more services under the condition of not replacing the PTN equipment, and meanwhile, the capacity expansion routing board and the original network element management board process a large amount of MCC together, so that the PTN equipment can run more efficiently.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings corresponding to the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a view of MCC V L AN transparent transmission application scenario;
FIG. 2 is a flowchart illustrating steps of a distributed routing aggregation method for network device management information according to the present invention;
fig. 3 is a diagram illustrating the structure of the network device management information distributed route convergence system according to the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The embodiment of the invention provides a method and a system for converging distributed routes of network equipment management information, which can process more routing operations of physical port data and more data forwarding by adding a capacity-expansion routing board on the conventional PTN equipment.
In order to achieve the technical effects, the general idea of the application is as follows:
the switching network board in the PTN device receives a first MCC (management communication Channel) corresponding to the number of network elements, detects the number of the first MCC, and determines:
when the number of the first MCC is less than a preset threshold value, the switching network board sends all the first MCC to a network element management board, and the network element management board performs port convergence on all the first MCC;
when the number of the first MCCs is larger than the preset threshold value, the switch network board forwards the first MCCs exceeding the preset threshold value to the capacity expansion routing board, the capacity expansion routing board performs port aggregation on the first MCCs exceeding the threshold value to obtain a second MCC, the second MCC is fed back to the switch network board, the switch network board sends the second MCC and the first MCCs which are not processed by the capacity expansion routing board to a network element management board together, and the network element management board performs port aggregation on the first MCCs and the second MCCs.
In summary, the present invention determines the number of the first MCCs through the switch network board, and if the number of the first MCCs is within the processing capability range of the network element management board, the first MCCs can be directly forwarded to the network element management board for processing, thereby ensuring the processing speed and efficiency of the first MCCs. When the number of the first MCCs exceeds the port convergence capability of the network element management, the switch network board needs to split the first MCCs, firstly, a part of the first MCCs are handed to a newly inserted capacity-expansion routing board for port convergence, and the aggregated first MCCs are aggregatedIs/are as followsThe second MCC, together with the remaining unprocessed first MCC and second MCC, is forwarded to the network element management board, thereby assisting the network element management board to complete the port aggregation of all the first MCCs. The auxiliary board card is ensured to be newly added under the condition of not replacing the existing PTN equipment and the existing network element management board, namely, the auxiliary board card is newly addedAfter the route board is expanded, the existing PTN device can still continue to process a large amount of port convergence, route calculation, forwarding and other work.
It should be noted that, the MCC (Management Communication Channel) is used to implement transmission of Management data such as control commands, service configuration, and alarm performance between maintenance endpoints, so as to implement network Management. The transmission of the management data is based on a TCP/IP protocol, and each network element of the PTN network not only terminates the data of the network element, but also is responsible for providing routing and forwarding functions for the data of the next hop, so that the data of the network management server can reach any target network element in the network hop by hop. The first MCC is network management information of a corresponding network element, and the network management information comprises a control command, service configuration and alarm performance. For the PTN device, the management information of other ports received by the PTN device may be used as an entry of one port corresponding to one first MCC, that is, one device corresponding to one first MCC entry, and may be aggregated into the routing management information of the PTN device, that is, the port, through sorting and assembling of the first MCC entries, that is, port aggregation.
In the case of transmitting metropolitan area network, the network element management disk of central office PTN equipment needs to manage many remote miniaturized PTN equipment through metropolitan area network, the method is that the network element management disk supports multiple MCCs, the MCCs are distinguished by adopting V L AN labels, the metropolitan area network is distributed to remote ends according to V L AN labels, and each MCC V L AN is used for managing one remote end.
In order to better understand the technical solution, the following detailed description is made with reference to specific embodiments.
Referring to fig. 2, an embodiment of the present invention provides a method for aggregating distributed routes of network device management information, where the method includes:
s1: the switching network board in the PTN device receives a first MCC (management communication Channel) corresponding to the number of network elements, detects the number of the first MCC, and determines the number.
If the existing PTN device is in a metropolitan area network, more remote small-model devices need to be managed through the metropolitan area network, that is, more first MCC entries are supported. If the original network element management board is directly used for processing, the processing capacity of the original network element management board may be exceeded, so that the processing efficiency of the equipment is low, and even the equipment cannot normally operate. If the PTN device is in the downstream branch of the trans-metropolitan area network, however, it may receive a small number of MCCs within its processing power. Further, the location where some PTN devices are located, the entries that receive the first MCC are not constant, but rather fluctuating. The method comprises the steps of firstly using a first MCC received by a switching network board, detecting the number of the MCC, and then performing specific operation according to the number of entries received by the current PTN equipment.
It should be noted that the network element includes a routing device directly connected to the PTN device through a physical link and a routing device directly connected to the PTN device through a virtual link.
The PTN network performs device management in the form of network elements, where each network element represents a port and a device corresponding to the port. The port and device are identified, ordered and managed by the IP address of the device.
It should also be noted that port aggregation is routing management implemented for PTN devices using the OSPF protocol.
S2: and when the number of the first MCC is less than a preset threshold value, the switching network board sends all the first MCC to a network element management board, and the network element management board performs port convergence on all the first MCC.
The current first MCC with a small number is in the processing capacity of the network element management board, and the first MCC can directly complete port aggregation, so that the switching network board directly sends the first MCC to the network element management board for port aggregation.
S3: when the number of the first MCCs is larger than the preset threshold value, the switch network board forwards the first MCCs exceeding the preset threshold value to the capacity expansion routing board, the capacity expansion routing board performs port aggregation on the first MCCs exceeding the threshold value to obtain a second MCC, the second MCC is fed back to the switch network board, the switch network board sends the second MCC and the first MCCs which are not processed by the capacity expansion routing board to a network element management board together, and the network element management board performs port aggregation on the first MCCs and the second MCCs.
And allocating the first MCC which exceeds the processing capacity of the network element management board to the capacity expansion routing board, so that the processing capacity of the PTN equipment to more network elements and equipment can be increased under the condition of not updating the equipment and hardware. The existing PTN equipment carries out statistics, compilation and aggregation on the network equipment connected with the existing PTN equipment according to an IP routing protocol OSPF, and further carries out calculation, forwarding and command according to the result. However, when the first MCC exceeds the processing capability of the PTN device, port aggregation at the beginning cannot be achieved, and subsequent network element management cannot be achieved. The invention distributes the first MCC which exceeds the processing capacity part to a capacity-expanding route board, and the capacity-expanding route board finishes the work load of part of port convergence and transfers the work load to a network element management board for final port convergence work. The setting mode ensures that the existing equipment can still carry out port convergence under the condition of more first MCC items, thereby further completing the subsequent network element management work.
It should be noted that the second MCC is similar to the first MCC, but the plurality of first MCCs are port aggregated and integrated into the communication channel management information similar to the first MCC.
As a preferred embodiment, the capacity expansion routing board is provided with an upper capacity expansion limit, and when the number of the first MCCs exceeding a preset threshold is greater than the upper capacity expansion limit, the sum of the capacity expansion routing boards to the upper capacity expansion limit is set to be greater than the number exceeding the threshold;
the exchange network board sends the first MCCs exceeding the threshold number to each capacity expansion routing board respectively, and the number of the first MCCs received by each capacity expansion routing board is smaller than the capacity expansion upper limit;
and the switching network board sends the second MCC of each expansion routing network board and the first MCC which is not processed by the expansion routing board to a network element management board together.
The number of the capacity expansion routing network boards can be flexibly set, and the specific number can be selected according to the requirement of the current PTN equipment. The flexible setting of the number of the capacity expansion routing boards further improves the upper limit of the existing PTN equipment for processing the first MCC, and can process more first MCCs. Meanwhile, the PTN equipment of the same model is more diversified in the selected capacity expansion route board scheme in different processing environments.
As shown in fig. 3, the present invention further provides a distributed routing convergence system for network device management information, which includes a network element management board, a capacity expansion routing board, and a switching network board:
the network element management board is used for carrying out port aggregation on all the first MCCs, or carrying out port aggregation on the second MCC and the first MCCs which are not processed by the capacity expansion routing board;
and the capacity expansion routing board is used for carrying out port convergence on the first MCCs with the number exceeding the preset threshold value to obtain second MCCs and feeding the second MCCs back to the switching network board.
A switching network board, configured to receive a first MCC (management communication Channel) corresponding to the number of network elements received by the PTN device, detect the number of the first MCC, and forward the first MCC according to the number of the first MCC:
-sending all first MCCs to the element management board when the number of first MCCs is smaller than a preset threshold.
When the number of the first MCCs is larger than the preset threshold, the switch network board forwards the first MCCs exceeding the threshold number to a self-expansion route board, and sends the second MCC to a network element management board together with the first MCCs which are not processed by the self-expansion route board.
Three pieces of hardware are provided in the PTN device: the network element management board, the capacity expansion routing board and the interactive web board can distinguish different first MCC numbers to perform specific processing: when the number of the first MCC is within the processing capacity range of the network element management board, the first MCC is directly forwarded to the network element management board by the switching network board for processing, so that the processing of the first MCC can be completed in time; and when the number of the first MCCs exceeds the processing capacity of the network element management board in the current PTN device, the invention obtains a second MCC which is processed by forwarding part of the first MCCs to the capacity-expansion routing board, and then assembles the first MCCs which are not processed by the capacity-expansion routing board and sends the first MCCs to the network element management board. And ensuring that all the first MCC can obtain port aggregation, thereby completing the subsequent routing management of the PTN equipment without exceeding the capability range of the network element management board.
Further, the capacity expansion routing board is provided with a capacity expansion upper limit, and when the number of the first MCCs exceeding a preset threshold part is larger than the capacity expansion upper limit, the sum of the capacity expansion upper limits of the plurality of capacity expansion routing boards is larger than the number exceeding the threshold;
the exchange network board sends the first MCCs exceeding the threshold number to each capacity expansion routing board respectively, and the number of the first MCCs received by each capacity expansion routing board is smaller than the capacity expansion upper limit;
and the switching network board sends the second MCC of each expansion routing network board and the first MCC which is not processed by the expansion routing board to a network element management board together.
It should be noted that the network element includes a routing device directly connected to the PTN device through a physical link and a routing device directly connected to the PTN device through a virtual link.
It should also be noted that port aggregation is routing management implemented for PTN devices using the OSPF protocol.
Various modifications and specific examples in the foregoing method embodiments are also applicable to the system of the present embodiment, and the detailed description of the method is clear to those skilled in the art, so that the detailed description is omitted here for the sake of brevity.
Generally, according to the method and system for converging the distributed routes of the network device management information provided by the embodiment of the invention, the capacity expansion route board is arranged to assist the network element management board in carrying out port connection, so that compared with the traditional method of directly replacing the whole device, the capacity of the PTN device can be improved more efficiently and rapidly, and meanwhile, the cost is lower.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for converging distributed routes of network equipment management information is characterized by comprising the following steps:
the switching network board in the PTN device receives a first MCC (Management communication channel) corresponding to the number of the network elements, detects the number of the first MCC, and determines:
when the number of the first MCC is less than a preset threshold value, the switching network board sends all the first MCC to a network element management board, and the network element management board performs port convergence on all the first MCC;
when the number of the first MCCs is larger than the preset threshold value, the switch network board forwards the first MCCs exceeding the preset threshold value to the capacity expansion routing board, the capacity expansion routing board performs port aggregation on the first MCCs exceeding the threshold value to obtain a second MCC, the second MCC is fed back to the switch network board, the switch network board sends the second MCC and the first MCCs which are not processed by the capacity expansion routing board to a network element management board together, and the network element management board performs port aggregation on the first MCCs and the second MCCs.
2. The method of claim 1, wherein: the capacity-expansion routing board is provided with a capacity-expansion upper limit, and when the number of the first MCC which exceeds a preset threshold part is larger than the capacity-expansion upper limit, the sum of the capacity-expansion upper limits of a plurality of capacity-expansion routing boards is larger than the number exceeding the threshold;
the exchange network board sends the first MCCs exceeding the threshold number to each capacity expansion routing board respectively, and the number of the first MCCs received by each capacity expansion routing board is smaller than the capacity expansion upper limit;
and the switching network board sends the second MCC of each expansion routing network board and the first MCC which is not processed by the expansion routing board to a network element management board together.
3. The method of claim 1, wherein: the network element comprises a routing device directly connected with the PTN device through a physical link and a routing device directly connected with the PTN device through a virtual link.
4. The method of claim 1, wherein: the port convergence is route convergence realized by PTN equipment by using an OSPF protocol.
5. The method of claim 1, wherein: the first MCC is network management information of a corresponding network element, and the network management information comprises a control command, service configuration and alarm performance.
6. A distributed routing convergence system for network equipment management information is characterized in that:
the network element management board is used for carrying out port aggregation on all the first MCCs, or carrying out port aggregation on the second MCC and the first MCCs which are not processed by the capacity expansion routing board;
a capacity expansion routing board for carrying out port convergence on the first MCCs exceeding the preset threshold value to obtain second MCCs and feeding back the second MCCs to the switching network board
A switching network board, configured to receive a first MCC (management communication Channel) corresponding to the number of network elements received by the PTN device, detect the number of the first MCC, and forward the first MCC according to the number of the first MCC:
-sending all first MCCs to the element management board when the number of first MCCs is smaller than a preset threshold.
When the number of the first MCCs is larger than the preset threshold, the switch network board forwards the first MCCs exceeding the threshold number to a self-expansion route board, and sends the second MCC to a network element management board together with the first MCCs which are not processed by the self-expansion route board.
7. The system of claim 6, wherein:
the capacity-expansion routing board is provided with a capacity-expansion upper limit, and when the number of the first MCC which exceeds a preset threshold part is larger than the capacity-expansion upper limit, the sum of the capacity-expansion upper limits of a plurality of capacity-expansion routing boards is larger than the number exceeding the threshold;
the exchange network board sends the first MCCs exceeding the threshold number to each capacity expansion routing board respectively, and the number of the first MCCs received by each capacity expansion routing board is smaller than the capacity expansion upper limit;
and the switching network board sends the second MCC of each expansion routing network board and the first MCC which is not processed by the expansion routing board to a network element management board together.
8. The system of claim 6, wherein: the network element comprises a routing device directly connected with the PTN device through a physical link and a routing device directly connected with the PTN device through a virtual link.
9. The system of claim 6, wherein: the ports converge to route management implemented by the PTN device using OSPF protocol.
10. The system of claim 6, wherein: the first MCC is network management information of a corresponding network element, and the network management information comprises a control command, service configuration and alarm performance.
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