CN101707533B - Network control method and system based on chain state in multiservice PCM optical access network - Google Patents
Network control method and system based on chain state in multiservice PCM optical access network Download PDFInfo
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- CN101707533B CN101707533B CN2009102094799A CN200910209479A CN101707533B CN 101707533 B CN101707533 B CN 101707533B CN 2009102094799 A CN2009102094799 A CN 2009102094799A CN 200910209479 A CN200910209479 A CN 200910209479A CN 101707533 B CN101707533 B CN 101707533B
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Abstract
The invention provides a network control method and a system based on chain state in a multiservice PCM optical access network. A topological structure of network element equipment in a multiservice PCM optical access network is established in network management equipment; the network management equipment sends an authentication message to carry out identity authentication and compatible detection on the network element equipment; the authenticated network element equipment is added into a management area by the network management equipment, configuration is carried out on the network element equipment according to the configuration files, each network element equipment is mapped into a network element object and management of the configuration information of the network element equipment is realized according to the network element object; and the network management equipment acquires information loaded by all the network element equipment and dynamically adjusts network setting according to the loaded information. The invention also processes the information of each network element equipment in the multiservice PCM optical access network on the basis of object-oriented models, and simultaneously can adjust the network topological structure dynamically according to the loaded information of the network element equipment.
Description
Technical field
The present invention relates to pulse code modulation PCM Optical Access Network, relate in particular in a kind of multi-service pulse code modulation PCM Optical Access Network network control method and system based on Link State.
Background technology
PCM (Pulse Code Modulation) is a pulse code modulation, also claims digital circuit, and it mainly satisfies the digital special line demand of user's high bandwidth, high reliability.It can be regarded as a kind of specific implementation of DDN, and for the user, difference of them is the difference of user terminal access device.
Digital circuit (PCM) inserts and is meant Access Networks such as not relying on DDN and FR, and 2,000,000 relayings of PCM directly are provided by transmission system, user network is inserted a kind of access way of INTERNET by ISP.Its main feature is not rely on Access Networks such as DDN and FR, and technology is comparatively simple, and leased-line charge is lower, and transmission quality has higher assurance again simultaneously.
Data communication is as a kind of new communication service, and its development can not break away from original communication network basis, must utilize original communications facility to be used as the means of transfer of data in the ordinary course of things.Public PCM utilizes by the existing optical networking of electric department and telephone exchange circuit and the broad covered area of setting up, multiple functional communication network, thereby utilizes PCM to set up user's specific computer network to have small investment, instant effect, characteristics such as easy to use.
The PCM optical transport network is a kind of of telecommunications access network, and this network is present in the edge of communication backbone, mainly finishes last 1 kilometer access of multiple mixed services such as large user's voice service, Ethernet data business, V35 video traffic, RS232 business.Be widely used in telecom operators' public network and private networks such as electric power, railway.The Network Management Equipment of present multi-service PCM Optical Access Network need be safeguarded a large amount of routing iinformations, when adding network, network element device need broadcast himself routing iinformation, a large amount of broadcast messages can cause the information of access network to be blocked up, the availability of reduction system, must utilize simple structure to organize network element device in the access network, and adopt new route issue mechanism to reduce the quantity of broadcast.
The network element device that the Network Management Equipment of present multi-service PCM Optical Access Network can only be selected to fix is as root node, and descend or network delay when elongated when the disposal ability of said network element equipment, can have a strong impact on the monitoring capacity of Network Management Equipment to access network, therefore, can dynamically adjust root node and become the inevitable requirement that Network Management Equipment adapts to complex environment.And the application can dynamically adjust network topology structure according to the load information of network element device simultaneously also based on the information of each network element device in the OO models treated multi-service PCM Optical Access Network.
Summary of the invention
Network control method based on Link State is provided to provide in a kind of multi-service PCM Optical Access Network the object of the invention, utilize described network control method can find automatically with the apparatus for establishing network in the topological structure of equipment, make things convenient for the beginning and the network management of PCM optical access device greatly, the user can see topology of networks and variation intuitively.
Based on the network control method of Link State, specifically comprise in a kind of multi-service PCM Optical Access Network:
A, set up the topological structure of network element device in the multi-service PCM Optical Access Network in Network Management Equipment, described topological structure is a tree type chain structure;
B, Network Management Equipment send checking message to all network element devices, network element device is carried out authentication and compatible the detection, whether compatible described checking message comprises: be used to judge whether network element device is the authentication message of validated user, be used for detecting between this network element device and the Network Management Equipment compatible detect-message according to the type of network element device and/or version number;
C, Network Management Equipment will add management domain by the network element device of checking, and according to configuration file network element device will be configured, and each network element device is mapped as the network element object, realize management to the network element device configuration information according to the operation to the network element object;
D, Network Management Equipment obtain the load information of all network element devices, and dynamically adjust network settings according to above-mentioned load information.
Wherein, the step of setting up the topological structure of network element device in the multi-service PCM Optical Access Network in Network Management Equipment is specially:
The arbitrary network element device of Network Management Equipment in multi-service PCM Optical Access Network sends connection request message, and network element device sends login request message to Network Management Equipment after receiving above-mentioned connection request message, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, and sends checking message according to above-mentioned login request message to network element device, if network element device is by checking then it is made as root node; If network element device then sends connection request message to another network element device not by checking, till determining root node;
Network Management Equipment sends the network topology probe message to the network element device as root node, after root node is received the network topology probe message of Network Management Equipment, all change the network address and the device address of destination address in the network topology probe message into 0xff, and all network element devices that Xiang Yuqi has network to connect are broadcasted this network topology probe message;
All receive the network element device of this network topology probe message all to coupled this network topology probe message of all lower level network element device broadcasts, by that analogy, till not having the lower level network element equipment that links to each other, each network element device of network topology probe message traversal multi-service PCM Optical Access Network;
All network element devices that receive this network topology probe message all send the topology probe response message to root node, root node is transmitted to Network Management Equipment with the topology probe response message, and Network Management Equipment is set up the topological structure of network element device according to the topology probe response message.
Wherein, each network element device is mapped as the network element object, according to the operation of network element object being realized the step to the management of network element device configuration information is specially:
Network Management Equipment is that the network element device in the multi-service PCM Optical Access Network distributes ID, according to network element device ID with the network element device information stores of reported by network element equipment in the information bank of Network Management Equipment, utilize Object Manager to set up the network element object and the network element object ID is set for network element device, set up the mapping relations between network element device ID and the network element object ID, Network Management Equipment utilizes the network element object ID to carry out data query and network element device operation;
Network Management Equipment is inquired about network element device information according to the network element object ID to information bank, described information bank is mapped as the network element object ID network element device ID and inquires about network element device information according to the said network element device id, be encapsulated in network element device information in the network element object and send to Network Management Equipment, Network Management Equipment is controlled network element device according to network element device information.
Also comprise, Network Management Equipment carries out dynamic routing to be safeguarded, concrete steps comprise: the Network Management Equipment periodically network element device of each in network sends the existing state query messages, each network element device sends the existing state inquiry request response message after receiving described existing state query messages, after Network Management Equipment is received this existing state inquiry request response message, according to fixing route survival condition, judge and the processing dynamic routing;
Described route survival condition is described below: if Network Management Equipment is received the existing state inquiry request response message of network element device, the time-to-live adds 1; Otherwise the time-to-live subtracts 1; The time-to-live of each network element device of Network Management Equipment initialization is N, N is the even number greater than 3, time-to-live equals the activity threshold that N/2 is a network element device, time-to-live equals 0 and is the network element device inefficacy, when time-to-live that Network Management Equipment detects certain network element device during, report the advance notice that it is about to lose to other network element device that links to each other with described network element device immediately less than N/2; When the time-to-live that Network Management Equipment detects certain network element device is 0, report that to other network element device that links to each other with described network element device it lost efficacy immediately, simultaneously the described network element device of deletion in the topological structure of Network Management Equipment.
Wherein, Network Management Equipment obtains the load information of all network element devices, and comprises according to the concrete steps that above-mentioned load information is dynamically adjusted network settings:
Network Management Equipment detects and writes down the load information of all network element devices, and adds up the load average value in nearest a period of time of all network element devices;
In the load at certain time intervals of root node all greater than load threshold, then Network Management Equipment is preserved relevant routing iinformation, from all network element devices, choose another minimum network element device of load average value as root node, with root node and the minimum location swap of network element device in network topology of load average value, rebulid network topology structure with this;
When the load average value of upper level network element equipment during greater than the load average value of coupled arbitrary lower level network element equipment, Network Management Equipment is preserved relevant routing iinformation, the location swap of network element device in network topology with load average value minimum in described upper level network element equipment and the coupled lower level network element equipment rebulids network topology structure with this.
Comprise that also when detecting new network element device pre-connection to multi-service PCM Optical Access Network, the process of setting up link management specifically comprises:
Network element device is waited for the request message that connects that Network Management Equipment sends, if do not receive this request message that connects in the given time, then sends login request message to Network Management Equipment, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to Network Management Equipment after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process of setting up link management, the link management that network management system is initiated standard to network element device is set up flow process; If checking is unsuccessful, does not then carry out and set up the link management flow process;
Perhaps,
Network element device sends connect request message and login request message to network management system, and request starts the register flow path of network element device; Network management system receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to network management system after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process of setting up link management, the link management that network management system is initiated standard to network element device is set up process; If checking is unsuccessful, does not then carry out and set up the link management flow process.
Network control system based on Link State is provided to provide in a kind of multi-service PCM Optical Access Network the object of the invention, utilize described network control system can find automatically with the apparatus for establishing network in the topological structure of equipment, make things convenient for the beginning and the network management of PCM optical access device greatly, the user can see topology of networks and variation intuitively.
Based on the network control system of Link State, described system comprises Network Management Equipment and network element device, specifically comprises in a kind of multi-service PCM Optical Access Network:
Network Management Equipment, in the network element device of multi-service PCM Optical Access Network, determine root node, Network Management Equipment is set up the topological structure of network element device by root node all network element device radio network topology probe message in network according to the topology probe response message of network element device transmission;
Network Management Equipment sends checking message to all network element devices, network element device is carried out authentication and compatible the detection, whether compatible described checking message comprises: be used to judge whether network element device is the authentication message of validated user, be used for detecting between this network element device and the Network Management Equipment compatible detect-message according to the type of network element device and version number;
Network element device receives the checking message that Network Management Equipment sends, and the checking response message that will comprise identity information, device type and version number information sends to Network Management Equipment;
Network Management Equipment will add management domain by the network element device of checking, and according to configuration file network element device will be configured, and each network element device is mapped as the network element object, realize management to the network element device configuration information according to the operation to the network element object;
Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information.
Wherein, the topological structure of setting up network element device in the multi-service PCM Optical Access Network in Network Management Equipment is specially:
The arbitrary network element device of Network Management Equipment in multi-service PCM Optical Access Network sends connection request message, and network element device sends login request message to Network Management Equipment after receiving above-mentioned connection request message, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, and sends checking message according to above-mentioned login request message to network element device, if network element device is by checking then it is made as root node; If network element device then sends connection request message to another network element device not by checking, till determining root node;
Network Management Equipment sends the network topology probe message to the network element device as root node, after root node is received the network topology probe message of Network Management Equipment, all change the network address and the device address of destination address in the network topology probe message into 0xff, and all network element devices that Xiang Yuqi has network to connect are broadcasted this network topology probe message;
All receive the network element device of this network topology probe message all to coupled this network topology probe message of all lower level network element device broadcasts, by that analogy, till not having the lower level network element equipment that links to each other, each network element device of network topology probe message traversal multi-service PCM Optical Access Network;
All network element devices that receive this network topology probe message all send the topology probe response message to root node, root node is transmitted to Network Management Equipment with the topology probe response message, and Network Management Equipment is set up the topological structure of network element device according to the topology probe response message.
Wherein, each network element device is mapped as the network element object, realizes the management of network element device configuration information is specially according to operation to the network element object:
Network Management Equipment is that the network element device in the multi-service PCM Optical Access Network distributes ID, according to network element device ID with the network element device information stores of reported by network element equipment in the information bank of Network Management Equipment, utilize Object Manager to set up the network element object and the network element object ID is set for network element device, set up the mapping relations between network element device ID and the network element object ID, Network Management Equipment utilizes the network element object ID to carry out data query and network element device operation;
Network Management Equipment is inquired about network element device information according to the network element object ID to information bank, described information bank is mapped as the network element object ID network element device ID and inquires about network element device information according to the said network element device id, be encapsulated in network element device information in the network element object and send to Network Management Equipment, Network Management Equipment is controlled network element device according to network element device information.
Also comprise, Network Management Equipment carries out dynamic routing to be safeguarded, comprise: the Network Management Equipment periodically network element device of each in network sends the existing state query messages, each network element device sends the existing state inquiry request response message after receiving described existing state query messages, after Network Management Equipment is received this existing state inquiry request response message, according to fixing route survival condition, judge and the processing dynamic routing;
Described route survival condition is described below: if Network Management Equipment is received the existing state inquiry request response message of network element device, the time-to-live adds 1; Otherwise the time-to-live subtracts 1; The time-to-live of each network element device of Network Management Equipment initialization is N, N is the even number greater than 3, time-to-live equals the activity threshold that N/2 is a network element device, time-to-live equals 0 and is the network element device inefficacy, when time-to-live that Network Management Equipment detects certain network element device during, report the advance notice that it is about to lose to other network element device that links to each other with described network element device immediately less than N/2; When the time-to-live that Network Management Equipment detects certain network element device is 0, report that to other network element device that links to each other with described network element device it lost efficacy immediately, simultaneously the described network element device of deletion in the topological structure of Network Management Equipment.
Wherein, Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information and comprise:
Network Management Equipment detects and writes down the load information of all network element devices, and adds up the load average value in nearest a period of time of all network element devices;
In the load at certain time intervals of root node all greater than load threshold, then Network Management Equipment is preserved relevant routing iinformation, from all network element devices, choose another minimum network element device of load average value as root node, with root node and the minimum location swap of network element device in network topology of load average value, rebulid network topology structure with this;
When the load average value of upper level network element equipment during greater than the load average value of coupled arbitrary lower level network element equipment, Network Management Equipment is preserved relevant routing iinformation, the location swap of network element device in network topology with load average value minimum in described upper level network element equipment and the coupled lower level network element equipment rebulids network topology structure with this.
Comprise that also when detecting new network element device pre-connection to multi-service PCM Optical Access Network, the process of setting up link management specifically comprises:
Network element device is waited for the request message that connects that Network Management Equipment sends, if do not receive this request message that connects in the given time, then sends login request message to Network Management Equipment, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to Network Management Equipment after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process of setting up link management, the link management that network management system is initiated standard to network element device is set up flow process; If checking is unsuccessful, does not then carry out and set up the link management flow process;
Perhaps,
Network element device sends connect request message and login request message to network management system, and request starts the register flow path of network element device; Network management system receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to network management system after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process of setting up link management, the link management that network management system is initiated standard to network element device is set up process; If checking is unsuccessful, does not then carry out and set up the link management flow process.
Description of drawings
Fig. 1 is the network topology structure figure of multi-service PCM Optical Access Network in the prior art;
Fig. 2 is the network topology structure figure of multi-service PCM Optical Access Network in the specific embodiment of the invention;
Fig. 3 is a schematic diagram of dynamically adjusting root node in the specific embodiment of the invention;
Fig. 4 is a schematic diagram of dynamically adjusting the network element device topology location in the specific embodiment of the invention;
Fig. 5 is the flow chart of network control method in the specific embodiment of the invention.
Embodiment
The present invention is described in detail below in conjunction with embodiment:
Fig. 1 is the network topology structure figure of multi-service PCM Optical Access Network in the prior art, comprising Network Management Equipment and network element device A, B, C, D, E, F, G, H and I, network element device A is a root node, and network element device A, B, C, D, E, F, G, H and I are connected by communication link respectively.The network of Fig. 1 connects comparatively complicated, and the topology information that Network Management Equipment will be preserved is comparatively complicated, and causes broadcast storm when sending broadcast in network easily.
Fig. 2 is the network topology structure figure of multi-service PCM Optical Access Network in the specific embodiment of the invention, and the network element device topological structure of PCM Optical Access Network is a tree type chain structure, and node branch links to each other by optical fiber between the node in the network greater than 2.Route is single route, that is to say in the network only to have unique route between any two network element devices.As shown in Figure 2, only there is unique route between any two network element devices in the tree type chain structure.
By and root node between hop count network element device is carried out classification, network element device A is a root node, the hop count between network element device B, C and D and the network element device A is 1, therefore, network element device B, C and D are 1 grade of node; Hop count between network element device E, F, G, H and I and the network element device A is 2, and therefore, network element device E, F, G, H and I are 2 grades of nodes.
When Network Management Equipment will be connected in the multi-service PCM Optical Access Network, Network Management Equipment at first any one network element device in multi-service PCM Optical Access Network sends connection request message, after described network element device is received the connection request message of Network Management Equipment transmission, send login request message to Network Management Equipment, request starts the register flow path of network element device.Network Management Equipment receives the login request message that network element device sends, and sends checking message according to above-mentioned login request message to network element device, if network element device is by checking then it is made as root node; If network element device then sends connection request message to another network element device, till root node is determined not by checking.
If in the multi-service PCM Optical Access Network time, do not have root node in the network when having Network Management Equipment to insert, the routing state of all network element devices all is initialized as inactive state.
Network Management Equipment sends the network topology probe message to the network element device as root node, after root node is received the network topology probe message of Network Management Equipment, all change the network address and the device address of destination address in the network topology probe message into 0xff, and all network element devices that Xiang Yuqi has network to connect are broadcasted this network topology probe message.
All receive the network element device of this network topology probe message all to coupled this network topology probe message of all lower level network element device broadcasts, for example, after network element device B receives the network topology probe message, send the network topology probe message to all coupled lower level network element equipment, promptly send the network topology probe message to network element device E and F, by that analogy, when the network element device of receiving the network topology probe message does not have continuous lower level network element equipment, no longer send the network topology probe message, so far, each network element device of network topology probe message traversal multi-service PCM Optical Access Network.
All network element devices that receive this network topology probe message all send the topology probe response message to root node, root node is transmitted to Network Management Equipment with the topology probe response message, and Network Management Equipment is set up the topological structure of network element device according to the topology probe response message.
Fig. 3 is a schematic diagram of dynamically adjusting root node in the specific embodiment of the invention.Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information.Network Management Equipment detects and writes down the load information of all network element devices, sense cycle is set by the network management personnel, for example, can detect the load information of 1 all network element device every 1/0.1/0.01 second, and add up load average value in nearest a period of time of all network element devices, for example, add up load average value in nearest 30 minutes of all network element devices.In the load at certain time intervals of root node all greater than load threshold, for example, loading in time interval of 30 minutes of root node all greater than 80%, then Network Management Equipment is preserved relevant routing iinformation, from all network element devices, choose another minimum network element device of load average value as root node, with root node and the minimum location swap of network element device in network topology of load average value, rebulid the network topology relation with this.
Fig. 4 is a schematic diagram of dynamically adjusting the network element device topology location in the specific embodiment of the invention.Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information.Network Management Equipment detects and writes down the load information of all network element devices, sense cycle is set by the network management personnel, for example, can detect the load information of 1 all network element device every 1/0.1/0.01 second, and add up load average value in nearest a period of time of all network element devices, for example, add up load average value in nearest 30 minutes of all network element devices.When the load average value of upper level network element equipment during greater than the load average value of coupled arbitrary lower level network element equipment, for example, recently in 30 minutes, the load average value of network element device B is respectively 65%, lower level network element equipment E that directly links to each other with network element device B and the load average value of F are respectively 45% and 35%, as can be seen, the load average value of network element device B is greater than any one of network element device E and F load average value, at this moment, Network Management Equipment is preserved relevant routing iinformation, with the location swap of network element device in network topology of load average value minimum in described upper level network element equipment and the coupled lower level network element equipment, rebulid the network topology relation with this.In lower level network element equipment E and F that network element device B directly links to each other, the load average value minimum of network element device F, then the location swap in network topology with network element device B and network element device F rebulids the network topology relation with this.
The concrete steps that the Network Management Equipment dynamic routing is safeguarded comprise: the Network Management Equipment periodically network element device of each in network sends the existing state query messages, each network element device sends the existing state inquiry request response message after receiving described existing state query messages, after root node is received this existing state inquiry request response message, according to fixing route survival condition, judge and the processing dynamic routing.
Described route survival condition is described below: Network Management Equipment is received the existing state inquiry request response message of network element device, and the time-to-live adds 1, otherwise the time-to-live subtracts 1, the time-to-live of each network element device of Network Management Equipment initialization is N, N is the natural number greater than 3, for example, is set to 10.Time-to-live equals the activity threshold that N/2 is a network element device, and the time-to-live equals 0 and is that network element device lost efficacy, and promptly the time-to-live equals 5 and be the activity threshold of network element device, and it is the network element device inefficacy that the time-to-live equals 0.When time-to-live that Network Management Equipment detects certain network element device during less than N/2, report the advance notice of losing of described network element device immediately to coupled network element device, promptly when time-to-live that Network Management Equipment detects certain network element device less than 5 the time, report the advance notice of losing of described network element device immediately to coupled network element device.When the time-to-live that network node detects certain network element device is 0, report that to coupled network element device described network element device lost efficacy immediately, simultaneously this network element device of deletion in the topological structure of Network Management Equipment.
When detecting new network element device and be connected to multi-service PCM Optical Access Network, network element device is waited for the request message that connects that Network Management Equipment sends, if do not receive this request message that connects in the given time, then send login request message to Network Management Equipment, request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to Network Management Equipment after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process that connects, the link management that network management system is initiated standard to network element device is set up flow process; If checking is unsuccessful, does not then carry out and set up the link management flow process.
When detecting new network element device and be connected to multi-service PCM Optical Access Network, can also send connect request message and login request message to network management system by network element device, request starts the register flow path of network element device; Network management system receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to network management system after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process that connects, the link management that network management system is initiated standard to network element device is set up process; If checking gets nowhere then does not carry out and set up the link management flow process.
Fig. 5 is the flow chart of network control method in the specific embodiment of the invention, and concrete steps are:
A, set up the topological structure of network element device in the multi-service PCM Optical Access Network in Network Management Equipment, described topological structure is a tree type chain structure;
B, Network Management Equipment send checking message to all network element devices, network element device is carried out authentication and compatible the detection, whether compatible described checking message comprises: be used to judge whether network element device is the authentication message of validated user, be used for detecting between this network element device and the Network Management Equipment compatible detect-message according to the type of network element device and/or version number;
C, Network Management Equipment will add management domain by the network element device of checking, and according to configuration file network element device will be configured, and each network element device is mapped as the network element object, realize management to the network element device configuration information according to the operation to the network element object;
D, Network Management Equipment obtain the load information of all network element devices, and dynamically adjust network settings according to above-mentioned load information.
The present invention also provides in a kind of multi-service PCM Optical Access Network based on the network control system of Link State, and described system comprises Network Management Equipment and network element device, is specially:
Network Management Equipment, in the network element device of multi-service PCM Optical Access Network, determine root node, Network Management Equipment is set up the topological structure of network element device by root node all network element device radio network topology probe message in network according to the topology probe response message of network element device transmission;
Network Management Equipment sends checking message to all network element devices, network element device is carried out authentication and compatible the detection, whether compatible described checking message comprises: be used to judge whether network element device is the authentication message of validated user, be used for detecting between this network element device and the Network Management Equipment compatible detect-message according to the type of network element device and version number;
Network element device receives the checking message that Network Management Equipment sends, and the checking response message that will comprise identity information, device type and version number information sends to Network Management Equipment;
Network Management Equipment will add management domain by the network element device of checking, and according to configuration file network element device will be configured, and each network element device is mapped as the network element object, realize management to the network element device configuration information according to the operation to the network element object;
Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information.
The form of routing table data is in the specific embodiment of the invention:
| Type of message | A last route pointer | Next route pointer | The route existing state | Local port number | The distal end slogan | The far-end network address | The remote equipment address |
| Routing table | XX?XX | XX?XX | XX | XX | XX | XX | XX |
This data format is made up of a last route pointer, next route pointer, route existing state, local terminal routed port number, opposite end/far-end routed port number, opposite end/far-end route network address, opposite end/far-end routing device address.The routing table data structure is used in Network Management Equipment the routing iinformation of all nodes in the storage networking, and this is a most important data format in the route control method.Wherein go up a route pointer, next route pointer and be used for a last routing iinformation and the next routing iinformation of memory node respectively, finish the structure and the operation of route chained list; The route existing state of route existing state indication present node takies a byte, the full blood state of 10 expressions, just survival fully; 6 expressions, half blood state, life is dangerous, need enter monitoring state at once; 0 expression is dead, needs deletion; The local terminal routed port number takies a byte, record node local terminal routed port number, and scope 0～66, wherein 0～63 is the sign of 64 E1,64 sign serial ports, 1,65 sign serial ports, 2,66 sign Ethernets; Opposite end/far-end routed port number takies a byte, record node far-end routed port number, and scope 0～63, wherein 0～63 is the sign of 64 E1; Opposite end/far-end route network address takies a byte, scope 0～255, and the network address of sign far-end route, the network address toggle switch on can only change equipment could change; Opposite end/far-end routing device address takies a byte, scope 0～255, and the device address of sign far-end route, the device address toggle switch on can only change equipment could change.
The form of route messages frame is in the specific embodiment of the invention:
| Type of message | Frame head | Source address | Destination address | Controlled flag/data length | Information | Postamble |
| Routing Protocol | 5A?9C?C2 | XX?XX | XX?XX | XX | XXXXXXXX | AA?D1 |
Form by frame head, source address, destination address, controlled flag/data length, information, postamble.
Frame head: the length of a. frame head is 3 bytes; B. frame head is represented the beginning of message; C. control frame message, frame head is 5AH9CH C2H.
Source address, destination address: the length of a. source address is 2 bytes, the length of destination address is 2 bytes; B. address packet includes network address and device address, the network address be preceding, the device address after; Be used for equipment of unique identification.C. the address also comprises the IP address of PC and the IP address of equipment lesser calorie, get the IP address back two; D. all device addresses all are unique in the whole network; Generally can change the network address and device address by toggle switch on the change equipment or wire jumper, 00H and 0FFH do not allow to use; E. working as the address is 0FFH, during 0FFH, is broadcast address, transmits message to all devices.
Controlled flag/data length: the length of a. controlled flag/data length is 1 byte; B. control mark is the control messages number of control frame message; C. data length is the message-length of Frame message, is 16H to the maximum.
Information: the length of a. information area is 1～16 byte; B. the valid data that a piece of news carries are represented in the information area.
Postamble: the length of a. postamble is 2 bytes;
Postamble has only two kinds of possible values: 0AAH 0D1H and 2AH 0D1H.The purpose of postamble is whole frame information is carried out parity check, guarantees binary system in the frame " 1 " number be even number (comprising frame head and postamble).
The form of topology probe message is in the specific embodiment of the invention:
| Type of message | Frame head | Source address | Destination address | Postamble |
| Route exploration message | 5A?9C?C2 | XX?XX | XX?XX | AA?D1 |
This probe message is made up of frame head, source address, destination address, postamble.Wherein, frame head accounts for 3 bytes, is 5AH 9CHC2H; Source address accounts for 2 bytes, is generally back 2 bytes of PC IP address; 2 bytes of destination address, the probe message that PC sends, destination address is that the network address of the equipment of root node adds the device address.The probe message that node sends, destination address are that the network address of new discovery node adds the device address.
The form of topology probe response message is in the specific embodiment of the invention:
| Type of message | Frame head | Source address | Destination address | Routing iinformation length | Routing iinformation | Postamble |
| Probe message is replied | 5A?9C?C2 | XX?XX | XX?XX | XX | XXXXXXXX | AA?D1 |
The topology probe response message is the response message that produces at topology probe message.Increase these two contents of routing iinformation length and routing iinformation, be used for passing back concrete route messages.Root node is by this message, sets up dynamically and upgrades routing table data.
The form of existing state query messages is in the specific embodiment of the invention:
| Type of message | Frame head | Source address | Destination address | Local port number+1 | The distal end slogan | The far-end network address | The remote equipment address | Postamble |
| The existing state inquiry | 5A?9C C2 | XX?XX | XX?XX | XX | XX | XX | XX | AA?D1 |
This message is made up of frame head, source address, destination address, Local port number+1, distal end slogan, far-end network address, remote equipment address, postamble.
The form of existing state inquiry request response message is in the specific embodiment of the invention:
| Type of message | Frame head | Source address | Destination address | Distal end slogan+1 | Local port number | The far-end network address | The remote equipment address | Postamble |
| The existing state inquiry | 5A?9C C2 | XX?XX | XX?XX | XX | XX | XX | XX | AA D1 |
This message is made up of frame head, source address, destination address, distal end slogan+1, Local port number, far-end network address, remote equipment address, postamble.
The form of route discovery message is in the specific embodiment of the invention:
| Type of message | Frame head | Source address | Destination address | Local port number | The distal end slogan | The far-end network address | The remote equipment address | Postamble |
| The existing state inquiry | 5A?9C C2 | XX?XX | XX XX | XX | XX | XX | XX | AA?D1 |
Route discovery message is made up of frame head, source address, destination address, Local port number, distal end slogan, far-end network address, remote equipment address, postamble.
The present invention not only can dynamically adjust root node to adapt to the needs of complex environment, but also, can dynamically adjust network topology structure according to the load information of network element device simultaneously based on the information of each network element device in the OO models treated multi-service PCM Optical Access Network.
Claims (10)
- In the multi-service PCM Optical Access Network based on the network control method of Link State, it is characterized in that, comprising:A, set up the topological structure of network element device in the multi-service PCM Optical Access Network in Network Management Equipment, described topological structure is a tree type chain structure;B, Network Management Equipment send checking message to all network element devices, network element device is carried out authentication and compatible the detection, whether compatible described checking message comprises: be used to judge whether network element device is the authentication message of validated user, be used for detecting between this network element device and the Network Management Equipment compatible detect-message according to the type of network element device and/or version number;C, Network Management Equipment will add management domain by the network element device of checking, and according to configuration file network element device will be configured, and each network element device is mapped as the network element object, realize management to the network element device configuration information according to the operation to the network element object;D, Network Management Equipment obtain the load information of all network element devices, and dynamically adjust network settings according to above-mentioned load information.
- 2. network control method as claimed in claim 1 is characterized in that, the step of setting up the topological structure of network element device in the multi-service PCM Optical Access Network in Network Management Equipment is specially:The arbitrary network element device of Network Management Equipment in multi-service PCM Optical Access Network sends connection request message, and network element device sends login request message to Network Management Equipment after receiving above-mentioned connection request message, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, and sends checking message according to above-mentioned login request message to network element device, if network element device is by checking then it is made as root node; If network element device then sends connection request message to another network element device not by checking, till determining root node;Network Management Equipment sends the network topology probe message to the network element device as root node, after root node is received the network topology probe message of Network Management Equipment, all change the network address and the device address of destination address in the network topology probe message into 0xff, and all network element devices that Xiang Yuqi has network to connect are broadcasted this network topology probe message;All receive the network element device of this network topology probe message all to coupled this network topology probe message of all lower level network element device broadcasts, by that analogy, till not having the lower level network element equipment that links to each other, each network element device of network topology probe message traversal multi-service PCM Optical Access Network;All network element devices that receive this network topology probe message all send the topology probe response message to root node, root node is transmitted to Network Management Equipment with the topology probe response message, and Network Management Equipment is set up the topological structure of network element device according to the topology probe response message.
- 3. network control method as claimed in claim 1 is characterized in that, each network element device is mapped as the network element object, according to the operation of network element object being realized the step to the management of network element device configuration information is specially:Network Management Equipment is that the network element device in the multi-service PCM Optical Access Network distributes ID, according to network element device ID the network element device configuration information of reported by network element equipment is stored in the information bank of Network Management Equipment, utilize Object Manager to set up the network element object and the network element object ID is set for network element device, set up the mapping relations between network element device ID and the network element object ID, Network Management Equipment utilizes the network element object ID to carry out data query and network element device operation;Network Management Equipment is inquired about the network element device configuration information according to the network element object ID to information bank, described information bank is mapped as the network element object ID network element device ID and inquires about the network element device configuration information according to the said network element device id, be encapsulated in the network element device configuration information in the network element object and send to Network Management Equipment, Network Management Equipment is controlled network element device according to the network element device configuration information.
- 4. network control method as claimed in claim 1, it is characterized in that, comprise that also Network Management Equipment carries out dynamic routing and safeguards, concrete steps comprise: the Network Management Equipment periodically network element device of each in network sends the existing state query messages, each network element device sends the existing state inquiry request response message after receiving described existing state query messages, after Network Management Equipment is received this existing state inquiry request response message,, judge and the processing dynamic routing according to fixing route survival condition;Described route survival condition is described below: if Network Management Equipment is received the existing state inquiry request response message of network element device, the time-to-live adds 1; Otherwise the time-to-live subtracts 1; The time-to-live of each network element device of Network Management Equipment initialization is N, N is the even number greater than 3, time-to-live equals the activity threshold that N/2 is a network element device, time-to-live equals 0 and is the network element device inefficacy, when time-to-live that Network Management Equipment detects certain network element device during, report that to other network element device that links to each other with described network element device it loses advance notice immediately less than N/2; When the time-to-live that Network Management Equipment detects certain network element device is 0, report that to other network element device that links to each other with described network element device it lost efficacy immediately, simultaneously the described network element device of deletion in the topological structure of Network Management Equipment.
- 5. network control method as claimed in claim 1 is characterized in that Network Management Equipment obtains the load information of all network element devices, and comprises according to the concrete steps that above-mentioned load information is dynamically adjusted network settings:Network Management Equipment detects and writes down the load information of all network element devices, and adds up the load average value in nearest a period of time of all network element devices;In the load at certain time intervals of root node all greater than load threshold, then Network Management Equipment is preserved relevant routing iinformation, from all network element devices, choose another minimum network element device of load average value as root node, with root node and the minimum location swap of network element device in network topology of load average value, rebulid network topology structure with this;When the load average value of upper level network element equipment during greater than the load average value of coupled arbitrary lower level network element equipment, Network Management Equipment is preserved relevant routing iinformation, the location swap of network element device in network topology with load average value minimum in described upper level network element equipment and the coupled lower level network element equipment rebulids network topology structure with this.
- 6. network control method as claimed in claim 1 is characterized in that, comprises that also the process of setting up link management specifically comprises when detecting new network element device and be connected to multi-service PCM Optical Access Network:Network element device is waited for the request message that connects that Network Management Equipment sends, if do not receive this request message that connects in the given time, then sends login request message to Network Management Equipment, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to Network Management Equipment after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process of setting up link management, the link management that Network Management Equipment is initiated standard to network element device is set up flow process; If checking is unsuccessful, does not then carry out and set up the link management flow process;Perhaps,Network element device sends connect request message and login request message to Network Management Equipment, and request starts the register flow path of network element device; Network Management Equipment receives the login request message that network element device sends, send checking message according to above-mentioned login request message to network element device, network element device sends the checking response message to Network Management Equipment after receiving checking message, judge after the Network Management Equipment Receipt Validation response message, if be proved to be successful, then carry out the flow process of setting up link management, the link management that Network Management Equipment is initiated standard to network element device is set up process; If checking is unsuccessful, does not then carry out and set up the link management flow process.
- In the multi-service PCM Optical Access Network based on the network control system of Link State, described system comprises Network Management Equipment and network element device, it is characterized in that, comprising:Network Management Equipment, in the network element device of multi-service PCM Optical Access Network, determine root node, Network Management Equipment is set up the topological structure of network element device by root node all network element device radio network topology probe message in network according to the topology probe response message of network element device transmission;Network Management Equipment sends checking message to all network element devices, network element device is carried out authentication and compatible the detection, whether compatible described checking message comprises: be used to judge whether network element device is the authentication message of validated user, be used for detecting between this network element device and the Network Management Equipment compatible detect-message according to the type of network element device and version number;Network element device receives the checking message that Network Management Equipment sends, and the checking response message that will comprise identity information, device type and version number information sends to Network Management Equipment;Network Management Equipment will add management domain by the network element device of checking, and according to configuration file network element device will be configured, and each network element device is mapped as the network element object, realize management to the network element device configuration information according to the operation to the network element object;Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information.
- 8. network control system as claimed in claim 7 is characterized in that, each network element device is mapped as the network element object, realizes the management of network element device configuration information is comprised according to the operation to the network element object:Network Management Equipment is that the network element device in the multi-service PCM Optical Access Network distributes ID, according to network element device ID the network element device configuration information of reported by network element equipment is stored in the information bank of Network Management Equipment, utilize Object Manager to set up the network element object and the network element object ID is set for network element device, set up the mapping relations between network element device ID and the network element object ID, Network Management Equipment utilizes the network element object ID to carry out data query and network element device operation;Network Management Equipment is inquired about the network element device configuration information according to the network element object ID to information bank, described information bank is mapped as the network element object ID network element device ID and inquires about the network element device configuration information according to the said network element device id, be encapsulated in the network element device configuration information in the network element object and send to Network Management Equipment, Network Management Equipment is controlled network element device according to the network element device configuration information.
- 9. network control system as claimed in claim 7, it is characterized in that, comprise that also Network Management Equipment carries out dynamic routing and safeguards, specifically comprise: the Network Management Equipment periodically network element device of each in network sends the existing state query messages, each network element device sends the existing state inquiry request response message after receiving described existing state query messages, after Network Management Equipment is received this existing state inquiry request response message,, judge and the processing dynamic routing according to fixing route survival condition;Described route survival condition is described below: if Network Management Equipment is received the existing state inquiry request response message of network element device, the time-to-live adds 1; Otherwise the time-to-live subtracts 1; The time-to-live of each network element device of Network Management Equipment initialization is N, N is the even number greater than 3, time-to-live equals the activity threshold that N/2 is a network element device, time-to-live equals 0 and is the network element device inefficacy, when time-to-live that Network Management Equipment detects certain network element device during, report that to other network element device that links to each other with described network element device it loses advance notice immediately less than N/2; When the time-to-live that Network Management Equipment detects certain network element device is 0, report that to other network element device that links to each other with described network element device it lost efficacy immediately, simultaneously the described network element device of deletion in the topological structure of Network Management Equipment.
- 10. network control system as claimed in claim 7 is characterized in that Network Management Equipment obtains the load information of all network element devices, and dynamically adjusts network settings according to above-mentioned load information and comprise:Network Management Equipment detects and writes down the load information of all network element devices, and adds up the load average value in nearest a period of time of all network element devices;In the load at certain time intervals of root node all greater than load threshold, then Network Management Equipment is preserved relevant routing iinformation, from all network element devices, choose another minimum network element device of load average value as root node, with root node and the minimum location swap of network element device in network topology of load average value, rebulid network topology structure with this;When the load average value of upper level network element equipment during greater than the load average value of coupled arbitrary lower level network element equipment, Network Management Equipment is preserved relevant routing iinformation, the location swap of network element device in network topology with load average value minimum in described upper level network element equipment and the coupled lower level network element equipment rebulids network topology structure with this.
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| CN105515814A (en) * | 2014-10-16 | 2016-04-20 | 中兴通讯股份有限公司 | Method and device for loading network element objects and method and device for storing network element information |
| CN105306274B (en) * | 2015-11-12 | 2018-10-16 | 北京讯风光通信技术开发有限责任公司 | A kind of dynamic ring-network topology management method of PCM nodes |
| CN106487946B (en) * | 2016-10-12 | 2019-11-19 | 重庆金美通信有限责任公司 | A kind of large-scale communication network network IP resource contention detection method, system and equipment |
| CN108512676B (en) * | 2017-02-27 | 2022-09-09 | 中兴通讯股份有限公司 | Channel analysis method, device and storage medium |
| CN107704698A (en) * | 2017-10-18 | 2018-02-16 | 清华大学 | Device network topological diagram automatic generation method and device based on pipeline registration |
| CN113472558B (en) * | 2020-03-31 | 2023-11-21 | 北京华为数字技术有限公司 | Network deployment method and device |
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| CN101188514A (en) * | 2007-11-09 | 2008-05-28 | 华为技术有限公司 | Method, device and system for automatically discovering network element device |
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| CN101188514A (en) * | 2007-11-09 | 2008-05-28 | 华为技术有限公司 | Method, device and system for automatically discovering network element device |
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