Space-ground integrated network management system based on SNMP (Simple Network Management Protocol)
By constructing an SNMP-based integrated space-ground network management system, the problems of real-time performance and data quantification in spacecraft network management were solved, enabling real-time monitoring and management of the spacecraft network. This system adapts to the differences between various devices and improves the timeliness of network status judgment and management efficiency.
Patent Information
- Application Number
- CN202511019893.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2025-11-18
AI Technical Summary
Existing technologies for spacecraft network management suffer from problems such as difficulty in directly managing at the network layer, difficulty in quantifying management data, and lag in network status judgment. In particular, there is a lack of efficient integrated space-ground network management methods in spacecraft integrated testing systems and on-orbit spacecraft network management.
A space-ground integrated network management system based on SNMP is constructed. It connects to ground test spacecraft, on-orbit operating spacecraft, integrated test system and on-orbit support system through network connection devices. A network monitoring module is configured, and the status of network devices is monitored using the SNMP protocol. The system reads management information database files and provides alarm prompts.
It enables real-time status monitoring of the integrated spacecraft test system and the on-orbit spacecraft network, supports remote testing, improves the timeliness of network status judgment, quantifies management data, and adapts to the differences in brands, models and operating systems of different equipment.
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Figure CN120979898A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of network management, and relates to a space-ground integrated network management system based on SNMP. BACKGROUND
[0002] It is a trend of contemporary spacecraft technology development to add network communication technology into a spacecraft information system. With the gradual establishment of a space-ground integrated network between a spacecraft and a ground comprehensive test system and an on-orbit support system, there is an increasing demand for network communication of a larger scale and a higher rate in the comprehensive test of the spacecraft and the on-orbit management stage. In order to ensure the normal operation of the integrated network, an efficient network management method is needed to implement management on the network.
[0003] At present, network management related to the spacecraft mainly stays in the stage of scattered management, that is, the spacecraft comprehensive test system network and the network on the spacecraft are managed as independent local area networks. In the spacecraft comprehensive test system network, the running state of the equipment and software in the application layer of the five-layer OSI network model is taken as a criterion for judging whether the network state is normal or not. The running state of the network on the spacecraft is mainly judged through the relevant telemetry data of the network equipment on the spacecraft. The above network state management methods have disadvantages such as difficulty in directly managing the network layer, difficulty in quantifying the network management data, and lag in network state judgment. SUMMARY
[0004] The application solves the technical problem of overcoming the deficiencies of the prior art and providing a space-ground integrated network management system based on SNMP, which realizes integrated management of the spacecraft comprehensive test ground system network and the on-orbit spacecraft network and solves the problems of difficulty in quantifying network management data and poor real-time judgment.
[0005] The technical solution of the application is as follows.
[0006] The space-ground integrated network management system based on SNMP comprises network connection equipment, a ground test spacecraft, an on-orbit spacecraft, a comprehensive test system and an on-orbit support system.
[0007] The network connection equipment is connected with the ground test spacecraft, the on-orbit spacecraft, the comprehensive test system and the on-orbit support system respectively to build an integrated network. The ground test spacecraft, the on-orbit spacecraft, the comprehensive test system and the on-orbit support system are all provided with network equipment.
[0008] Network monitoring modules are configured in the comprehensive test system and the on-orbit support system.
[0009] The network monitoring module loads and reads the management information base file corresponding to each network device in the integrated network, obtains the network state of the corresponding network device according to the management information base file, and alarms when the network state of the corresponding network device is abnormal.
[0010] In the above-mentioned SNMP-based integrated network management system, the network connection device has at least one routing port, and the IP address of the routing port is the gateway address of the ground test spacecraft, the on-orbit spacecraft, the integrated test system or the on-orbit support system; the routing port has at least one three-layer switching function.
[0011] In the above-mentioned SNMP-based integrated network management system, the network devices in the ground test spacecraft include spacecraft network switches, network cameras, network voice devices and network communication terminals; the network devices in the on-orbit spacecraft include spacecraft network switches, network cameras, network voice devices and network communication terminals; the network devices in the integrated test system include switches, computers, servers, network power distribution units and network cameras; and the network devices in the on-orbit support system include switches, computers, servers and network power distribution units.
[0012] In the above-mentioned SNMP-based integrated network management system, the ground test spacecraft and the integrated test system are physically connected by optical fibers or cables with network communication function to realize communication between the ground test spacecraft and the integrated test system; and the on-orbit spacecraft and the on-orbit support system are connected by radio frequency channels to realize communication between the on-orbit spacecraft and the on-orbit support system.
[0013] In the above-mentioned SNMP-based integrated network management system, the network monitoring module is connected to the network devices to be monitored through an Ethernet interface to realize communication, and the network monitoring module uses the SNMP network management protocol.
[0014] In the above-mentioned SNMP-based integrated network management system, the network monitoring module configured in the integrated test system is used to monitor the network device states in the ground test spacecraft and the integrated test system; and the network monitoring module configured in the on-orbit support system is used to monitor the network device states in the on-orbit spacecraft and the on-orbit support system.
[0015] In the above-mentioned SNMP-based integrated network management system, the two monitoring modules have consistent technical states; when the local area network of the integrated test system and the local area network of the on-orbit support system are connected in parallel, the two monitoring modules are simplified into one, which is configured in the integrated test system or the on-orbit support system.
[0016] In the above-mentioned SNMP-based integrated network management system of space and ground, the network monitoring module reads the management information base file of the corresponding network device, and then filters the required network state from the management information base file; the network state is a device state parameter or a network operation parameter; the device state parameter or the network operation parameter is displayed on the terminal interface in the form of a table, a graph or a curve, and when the network state of the corresponding network device is abnormal, an alarm is given.
[0017] In the above-mentioned SNMP-based integrated network management system of space and ground, the device state parameter includes a device name, an IP address list, a startup time, a software version, a CPU occupancy rate, a memory occupancy rate, a port state, a local area network division configuration, a routing protocol configuration and a device temperature.
[0018] The network operation parameter includes a port in-out byte number, a port unicast message number, a port multicast message number, a port broadcast message number, a port IP data packet rate and a port bandwidth utilization rate.
[0019] In the above-mentioned SNMP-based integrated network management system of space and ground, the network abnormal state includes an abnormal increase of the CPU utilization rate of the network device, an abnormal increase of the memory utilization rate of the network device, an abnormal increase or decrease of the port message number, and a port communication interruption.
[0020] The beneficial effects of the present application compared with the prior art are as follows:
[0021] (1) When the integrated network of space and ground composed of the ground test spacecraft, the on-orbit spacecraft, the comprehensive test system and the on-orbit support system is running, the present application can access the monitored network at any time to complete the exploration of the specified device state, and is not limited by the specific time of network access.
[0022] (2) The present application can access the monitored network at any place to complete the exploration of the specified device state, and is not limited by the specific location of network access.
[0023] (3) The present application can be applied to the monitored network as long as the network has a network interface and an IP address and supports SNMP, and is not limited by the brand, model, operating system and functional performance difference of the monitored device. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a schematic diagram of the integrated network management system of space and ground of the present application.
[0025] Figure 2 It is a flow chart of the SNMP communication of the integrated network of space and ground of the present application. DETAILED DESCRIPTION
[0026] The present application will be further described below in combination with embodiments.
[0027] The application provides an integrated network management system based on SNMP, which solves the problems of integrated management of the network of a spacecraft comprehensive test ground system and the network of an on-orbit spacecraft, solves the problems of difficulty in data quantization and poor real-time decision of the network management of the spacecraft comprehensive test ground system, and solves the problems of difficulty in data quantization and poor real-time decision of the network management of the on-orbit spacecraft.
[0028] The integrated network management system based on SNMP, as shown in Figure 1 includes a network connection device, a ground test spacecraft, an on-orbit spacecraft, a comprehensive test system and an on-orbit support system.
[0029] The network connection device is connected with the ground test spacecraft, the on-orbit spacecraft, the comprehensive test system and the on-orbit support system respectively to construct an integrated network, and the ground test spacecraft, the on-orbit spacecraft, the comprehensive test system and the on-orbit support system are all provided with network devices.
[0030] The network connection device is provided with at least one routing port, and the IP address of the routing port is the gateway address of the ground test spacecraft, the on-orbit spacecraft, the comprehensive test system or the on-orbit support system; the routing port is provided with at least one three-layer switching function.
[0031] The network devices in the ground test spacecraft include a spacecraft network switch, a network camera, a network voice device and a network communication terminal; the network devices in the on-orbit spacecraft include a spacecraft network switch, a network camera, a network voice device and a network communication terminal; the network devices in the comprehensive test system include a switch, a computer, a server, a network power distribution unit and a network camera; and the network devices in the on-orbit support system include a switch, a computer and a server.
[0032] The ground test spacecraft and the comprehensive test system are physically connected by optical fibers or cables with network communication function to realize communication between the ground test spacecraft and the comprehensive test system; the on-orbit spacecraft and the on-orbit support system are connected by radio frequency channels to realize communication between the on-orbit spacecraft and the on-orbit support system.
[0033] Network monitoring modules are configured in the comprehensive test system and the on-orbit support system. The network monitoring modules are connected with the network devices to be monitored through Ethernet interfaces to realize communication, and the network monitoring modules adopt an SNMP network management protocol.
[0034] The network monitoring module configured in the comprehensive test system is used for monitoring the network device states of the ground test spacecraft and the comprehensive test system; and the network monitoring module configured in the on-orbit support system is used for monitoring the network device states of the on-orbit spacecraft and the on-orbit support system.
[0035] The technical states of the two monitoring modules are consistent; when the LAN of the comprehensive test system and the LAN of the on-orbit support system are connected, the two monitoring modules are simplified into one, which is configured in the comprehensive test system or the on-orbit support system.
[0036] The network monitoring module loads and reads the management information base file corresponding to each network device in the integrated network; the network state of the corresponding network device is obtained according to the management information base file, and an alarm is given when the network state of the corresponding network device is abnormal.
[0037] After the network monitoring module reads the management information base file of the corresponding network device, the required network state is screened from the management information base file; the network state is a device state parameter or a network operation parameter; the device state parameter or the network operation parameter is displayed in the form of a table, a graph or a curve on the terminal interface, and an alarm is given when the network state of the corresponding network device is abnormal.
[0038] The device state parameter includes a device name, an IP address list, a startup time, a software version, a CPU occupancy rate, a memory occupancy rate, a port state, LAN division configuration, routing protocol configuration and a device temperature. The network operation parameter includes port in-out byte number, port unicast message number, port multicast message number, port broadcast message number, port IP data packet rate and port bandwidth utilization rate.
[0039] The network abnormal state includes abnormal increase of network device CPU utilization rate, abnormal increase of network device memory utilization rate, abnormal increase or decrease of port message number and port communication interruption.
[0040] The network monitoring module can manage the network state in real time and discover network abnormal problems in time; the network monitoring module can access the network at any time and at any network location, and can manage the network state without being limited by the brand, model, operating system and functional performance difference of the monitored device as long as the monitored device supports SNMP.
[0041] Embodiment
[0042] The application will be described in detail below with reference to specific embodiments.
[0043] 1. Integrated network construction
[0044] The ground test spacecraft, the on-orbit spacecraft, the integrated test system for the ground test spacecraft, the on-orbit support system for the on-orbit spacecraft, the network communication path formed by the space-earth radio frequency wireless link, the radio frequency cable or the optical fiber for the ground communication, etc. form a network, and the network connection device is routed. In the embodiment, the network connection device is a network switch or a router, has at least one routing port, and the routing port has a three-layer switching function. The IP address of the routing port is the gateway address of the ground test spacecraft, the on-orbit spacecraft, the integrated test system or the on-orbit support system. The routing port with the three-layer switching function realizes the interconnection between the local area networks of different gateways.
[0045] As shown in Figure 1 , the ground test spacecraft and the integrated test system are physically connected by optical fibers or cables with network communication function. In the embodiment, the integrated test system includes a test terminal (such as a computer), a database and a server. The test terminal, the database and the server are connected to the network connection device through optical cables or cables, and the ground test spacecraft is also connected to the network connection device through optical cables or cables.
[0046] As shown in Figure 1 , the on-orbit spacecraft and the on-orbit support system are connected by radio frequency paths. In the embodiment, the on-orbit spacecraft and the on-orbit support system transmit network data through the radio frequency path (i.e. the measurement and control communication link). The radio frequency path supports the IP over CCSDS protocol and has sufficient communication bandwidth, which facilitates the stable transmission of network data. The on-orbit support system includes an on-orbit support terminal (such as a computer) and an on-orbit support server. The on-orbit support terminal and the on-orbit support server are connected to the network connection device through optical cables or cables.
[0047] 2. Network monitoring module deployment and operation
[0048] According to an embodiment of the present application, the network monitoring module is a SNMP-based network monitoring module. According to the SNMP standard, all devices connected to the integrated network composed of the ground test spacecraft, the integrated test system, the on-orbit spacecraft and the on-orbit support system are monitored by the SNMP protocol.
[0049] The steps of the space-earth integrated network state monitoring are as follows.
[0050] 1) MIB file reading. Import and parse the MIB file belonging to the network device in the integrated network constituted by the ground test spacecraft, the on-orbit spacecraft, the integrated test system for the ground test spacecraft, and the network device for the on-orbit spacecraft, and read the reference type, auxiliary definition, managed object definition, Trap definition, etc. recorded in the file in a certain order according to the provisions of the MIB standard. The node information of the managed device exhibited by the MIB file is logically an OID tree from top to bottom, and in order to describe all the attributes of an object node, the MIB file reading adopts <map>Container class storage, taking OID value of managed object as key value of map, attribute information of object as index value, writing managed object into tree structure in process of reading MIB file line by line, realizing access to managed object.
[0051] 2)SNMP protocol implementation. Communication between management workstation (i.e. computer running network monitoring module) and network management agent (i.e. managed network device) follows workflow as shown in Figure 2 , in order of initializing network socket, creating Vb class (defining variable object and related function) and binding Oid (variable identifier) parameter, creating Pdu class (defining protocol data unit object and related function) and adding Vb, creating Target class (defining target agent object class) and setting network communication information, creating Snmp class (defining Snmp object and PDU operation function) and calling SNMP operation method.
[0052] Table 1 SNMP communication method table
[0053]
[0054] Managed object in MIB file is divided into scalar object and table object. When monitoring scalar object (carrying out GetRequest, GetReponse operation), adopt a way of binding multiple management variables by one SNMP message, select which variables to monitor by user, after selection, bind to same SNMP message at one time, and poll state of selected variable periodically through timer; when monitoring table object (carrying out GetNextRequset, GetReponse operation), select one or more column objects, and traverse index instance value through loop. When setting certain column object in scalar object or table object (carrying out SetRequest operation), according to type of set object (such as int or string type) and variable value to be set, carry out operation on managed object.
[0055] 3) Management state output. Query state change of scalar object and table object periodically. Objects reflecting network data throughput, device key state, basic information and other contents are usually defined in form of scalar object, and such data changes fast with time, query periodically with 2 seconds as period; objects reflecting interface type and quantity, VLAN information, gateway address, next hop address and other contents are usually defined in form of table object, and if no significant change occurs in device itself or external network environment, query periodically with 10 seconds as period.
[0056] Management state is output in 3 ways:
[0057] 31) list form. Scalar objects use m rows (m is the number of scalar objects) x 2 columns list to display information; table objects use m rows (m is the number of index values of table objects) x n columns (n is the number of column objects in the table) list to display information.
[0058] 32) graphic form. The managed object data is displayed as a one-dimensional time series curve, the horizontal axis of the curve is the time axis, and the vertical axis is the data axis. A data point is drawn at each time, and the curve display is refreshed at a fixed time interval, which is the same as the fixed query period.
[0059] 33) text form. All state changes and operation information generated during the running of the network monitoring software are recorded in a log text and displayed in real time. The recorded content includes the time of event occurrence, event type (divided into three categories: message, warning, and error, with severity increasing in turn), and event specific content (such as network abnormal interruption, user operation, etc.).
[0060] The network monitoring module is deployed as follows.
[0061] 1. Start the SNMP service of the computer running the network monitoring module, which can be any computer connected to the integrated network of space and earth.
[0062] 2. Run the network monitoring module and set the monitoring parameter alarm threshold.
[0063] The integrated network of space and earth composed of the ground test spacecraft, on-orbit running spacecraft, comprehensive test system, and on-orbit support system can "at any time" access the monitored network to complete the exploration of the state of the specified device, without being limited by the specific time of network access.
[0064] The invention can "access anywhere" to the monitored network to complete the exploration of the state of the specified device, without being limited by the specific location of network access.
[0065] The invention can be accessed to the network of the monitored network with network interface and IP address and support SNMP, without being limited by the brand, model, operating system, and functional performance difference of the monitored device. The integrated network of space and earth composed of the ground test spacecraft, on-orbit running spacecraft, comprehensive test system, and on-orbit support system can "at any time" access the monitored network to complete the exploration of the state of the specified device, without being limited by the specific time of network access.
[0066] Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solutions of the present application shall fall within the protection scope of the technical solutions of the present application.< / map>
Claims
1. An SNMP-based integrated space-ground network management system, characterized in that: This includes network connectivity equipment, ground test spacecraft, spacecraft in orbit, integrated test systems, and on-orbit support systems. The network connection devices are connected to the ground test spacecraft, the spacecraft in orbit, the integrated test system, and the on-orbit support system to build an integrated network. Network equipment is installed in ground test spacecraft, in-orbit operational spacecraft, integrated test system, and in-orbit support system; Network monitoring modules are configured in both the integrated testing system and the on-orbit support system. The network monitoring module loads and reads the management information database files corresponding to each network device in the integrated network; it obtains the network status of the corresponding network device based on the management information database file, and issues an alarm when the network status of the corresponding network device is abnormal.
2. The SNMP-based integrated space-ground network management system according to claim 1, characterized in that: The network connection device has at least one routing port, the IP address of which is the gateway address of the ground test spacecraft, the spacecraft in orbit, the integrated test system, or the on-orbit support system; at least one of the routing ports has Layer 3 switching functionality.
3. The SNMP-based integrated space-ground network management system according to claim 1, characterized in that: The network equipment in the ground test spacecraft includes spacecraft network switches, network cameras, network voice equipment, and network communication terminals; the network equipment in the spacecraft in orbit includes spacecraft network switches, network cameras, network voice equipment, and network communication terminals; the network equipment in the integrated test system includes switches, computers, servers, network power distribution units, and network cameras; and the network equipment in the on-orbit support system includes switches, computers, servers, and network power distribution units.
4. The SNMP-based integrated space-ground network management system according to claim 1, characterized in that: The ground test spacecraft is physically connected to the integrated test system using optical fiber or cables with network communication capabilities, enabling communication between the ground test spacecraft and the integrated test system. The spacecraft in orbit and the on-orbit support system are connected via a radio frequency path to enable communication between the spacecraft in orbit and the on-orbit support system.
5. The SNMP-based integrated space-ground network management system according to claim 3, characterized in that: The network monitoring module communicates with the network device to be monitored via an Ethernet interface and uses the SNMP network management protocol.
6. The SNMP-based integrated space-ground network management system according to claim 5, characterized in that: The network monitoring module configured in the integrated test system is used to monitor the status of the ground test spacecraft and the network equipment in the integrated test system; the network monitoring module configured in the on-orbit support system is used to monitor the status of the on-orbit operating spacecraft and the network equipment in the on-orbit support system.
7. The SNMP-based integrated space-ground network management system according to claim 6, characterized in that: The two monitoring modules are in the same technical state; when the integrated test system LAN and the on-orbit support system LAN are connected, the two monitoring modules are simplified into one and configured in the integrated test system or the on-orbit support system.
8. The SNMP-based integrated space-ground network management system according to claim 7, characterized in that: After reading the management information database file of the corresponding network device, the network monitoring module filters the required network status from the management information database file; the network status is the device status parameter or network operation parameter; the device status parameter or network operation parameter is displayed on the terminal interface in the form of table, graph, or curve; when the network status of the corresponding network device is abnormal, an alarm prompt is issued.
9. The SNMP-based integrated space-ground network management system according to claim 8, characterized in that: The device status parameters include device name, IP address list, startup time, software version, CPU utilization, memory utilization, port status, LAN partitioning configuration, routing protocol configuration, and device temperature. The network operating parameters include the number of bytes input and output to the port, the number of unicast packets to the port, the number of multicast packets to the port, the number of broadcast packets to the port, the port IP packet rate, and the port bandwidth utilization.
10. The SNMP-based integrated space-ground network management system according to claim 8, characterized in that: The abnormal network states include abnormal increases in network device CPU utilization, abnormal increases in network device memory utilization, abnormal increases or decreases in port packet count, and port communication interruptions.