CN115242301A - Network link monitoring method and device, storage medium and communication equipment - Google Patents

Network link monitoring method and device, storage medium and communication equipment Download PDF

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CN115242301A
CN115242301A CN202210872133.2A CN202210872133A CN115242301A CN 115242301 A CN115242301 A CN 115242301A CN 202210872133 A CN202210872133 A CN 202210872133A CN 115242301 A CN115242301 A CN 115242301A
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node
time delay
delay information
determining
network
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CN115242301B (en
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王凯跃
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

The present disclosure provides a network link monitoring method and apparatus, storage medium, and communication device; relates to the technical field of communication. The method comprises the following steps: respectively arranging network probes at two ends of a target network link, and sending an Internet packet explorer through the network probes to acquire time delay information of each route path in a first node transmission path; determining the equipment processing time delay of each node in the first node transmission path based on the time delay information of each route path; and determining the network transmission condition of each routing path based on the equipment processing time delay. The method and the device can effectively monitor the road sections/nodes influencing the network quality in the network link of the PON system, and improve the accuracy of network link monitoring.

Description

Network link monitoring method and device, storage medium and communication equipment
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a network link monitoring method and apparatus, a storage medium, and a communication device.
Background
With the development of communication technology, broadband Optical access networks are more and more commonly applied, and how to accurately monitor a Network link of a broadband PON (Passive Optical Network ) access Network becomes a focus of the field.
Under different environments, the difference of the internal network structures of the PON system is large, and network links between different network nodes can affect the network quality to a large extent. And the related technology lacks an effective monitoring means for road sections/nodes influencing the network quality in the network link, and the monitoring accuracy is low.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a network link monitoring method and apparatus, a storage medium, and a communication device, so as to solve effective monitoring of a road segment/node that affects network quality in a network link of a PON system to a certain extent, and improve accuracy of network link monitoring.
According to a first aspect of the present disclosure, a network link monitoring method is provided, which is applied to a passive optical network PON system, and the method includes: respectively arranging network probes at two ends of a target network link, and sending an Internet packet searching device to an opposite end and each node on a first node transmission path through the network probes so as to acquire time delay information of each route path in the first node transmission path; the first node transmission path is used for indicating a transmission path of information to be transmitted on the target network link; determining the equipment processing time delay of each node in the first node transmission path based on the time delay information of each route path; and determining the network transmission condition of each routing path based on the equipment processing time delay.
Optionally, the method further comprises: respectively sending a routing tracking command to an opposite terminal and an Optical Line Terminal (OLT) through the network probe so as to obtain two second node transmission paths; and determining the position of the OLT in the target network link in response to the comparison result of the two second node transmission paths so as to determine a first node transmission path.
Optionally, the determining the position of the OLT in the target network link in response to the comparison result of the two transmission paths of the second node includes: comparing the two second node transmission paths, and determining the difference node initial positions of the two second node transmission paths; the difference node is a node with a different routing path in the two second node transmission paths; and determining the starting position of the difference node as the position of the OLT in the target network link.
Optionally, the determining, based on the delay information of each segment of the routing path, the device processing delay of each node in the first node transmission path includes: respectively acquiring first time delay information from an initial node to a destination node, second time delay information from the initial node to an intermediate node and third time delay information from the intermediate node to the destination node in the first node transmission path; the destination node is a routing node between an initial node and the destination node in the first node transmission path; and summing the second time delay information and the third time delay information, comparing a summation result with the first time delay information, and determining the equipment processing time delay of the intermediate node.
Optionally, the determining, based on the delay information of each segment of the routing path, the device processing delay of each node in the first node transmission path further includes: acquiring multiple groups of time delay data in the first node transmission path within a preset time period; each group of time delay data comprises first time delay information, second time delay information and third time delay information; determining a first time delay information average value, a second time delay information average value and a third time delay information average value in the multiple groups of time delay data; and determining the equipment processing time delay corresponding to the intermediate node by using the first time delay information average value, the second time delay information average value and the third time delay information average value.
Optionally, before determining the device processing latency of the intermediate node, the method further includes: and respectively carrying out data filtering processing on the first time delay information, the second time delay information and the third time delay information.
According to a second aspect of the present disclosure, there is provided a network link monitoring apparatus applied to a passive optical network PON system, the apparatus including: the detection module is used for respectively distributing network probes at two ends of a target network link and sending an Internet packet explorer to an opposite end and each node on the first node transmission path through the network probes so as to acquire time delay information of each route path in the first node transmission path; the first node transmission path is used for indicating a transmission path of information to be transmitted on the target network link; a first determining module, configured to determine, based on the delay information of each segment of the routing path, a device processing delay of each node in the first node transmission path; a second determining module, configured to determine a network transmission status of each segment of the routing path based on the device processing delay.
According to a third aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the above.
According to a fourth aspect of the present disclosure, there is provided a communication apparatus comprising: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the method of any of the above via execution of the executable instructions.
Exemplary embodiments of the present disclosure may have some or all of the following benefits:
in the network link monitoring method provided in the exemplary embodiment of the present disclosure, on one hand, network probes may be respectively arranged at two ends of a target network link, and an internet packet searcher is sent to an opposite end and each node on a first node transmission path through the network probes to obtain time delay information of each route path in the first node transmission path; and further determining the equipment processing time delay of each node, and finally determining the network transmission condition of each route path. The processing time delay of the equipment is determined by ingeniously utilizing the network probes at the two ends of the network link, and then the processing time delay of the equipment can be separated from the time delay information of the routing path, so that the transmission time delay of the routing path is determined more accurately, and the routing path is monitored accurately. On the other hand, the network probe disclosed by the invention is realized through a software program, does not depend on a hardware level, can avoid link differences caused by hardware differences among nodes, and can realize flexible deployment and application. In addition, the method and the system utilize the existing Internet packet explorer to monitor the link, do not need additional monitoring deployment, and have strong implementability.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 schematically shows one of the flow diagrams of a network link monitoring method according to one embodiment of the present disclosure.
Fig. 2 schematically illustrates a schematic diagram of a network probe acquiring routing path delay information according to an embodiment of the present disclosure.
Figure 3 schematically illustrates two second node transmission path schematics of differently deployed location network probes according to one embodiment of the present disclosure.
Fig. 4 schematically shows a second flow diagram of a network link monitoring method according to an embodiment of the present disclosure.
Fig. 5 schematically shows a schematic structural diagram of a network link monitoring device according to one embodiment of the present disclosure.
Fig. 6 schematically illustrates an exemplary communication device block diagram according to one embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The network link monitoring method provided in some embodiments of the present disclosure is applied to an industrial PON platform, which can be deployed at an enterprise workshop level and a factory level and is used to carry production, monitoring, and office services of an enterprise. In addition, conversion of industrial protocols can be realized by deploying industrial PON equipment at a workshop level, and service carrying capacity based on standardized unified protocols is provided among different types of field level equipment, sensors and enterprise information management and cloud service platforms.
An OLT (Optical Line Terminal) and an ONU (Optical Network Unit) in an industrial PON platform are very important components. The OLT can be installed in a central control station of an enterprise park and is a local side device, and the ONU can be installed in a user side of the enterprise park and is a user side device. The local side equipment OLT and the plurality of customer premise equipment ONUs can be connected through an Optical Distribution Network (ODN) formed by a passive optical cable, an optical splitter/combiner and the like. Other networks, such as ethernet and an Element Management System (EMS), may also be provided between the ONU and the user.
However, in different enterprise environments, the difference of the network structures inside the PON platform is large, and the network link between nodes in the platform can affect the network quality to a large extent. When network interruption or congestion occurs in the network, the position of the congestion needs to be accurately positioned, and therefore the network link monitoring method disclosed by the invention is provided.
Referring to fig. 1, the network link monitoring method of an embodiment provided by the present disclosure, which may be applied to an industrial PON system, may include the following steps S110 to S130.
Step S110, network probes are respectively distributed at two ends of a target network link, and an Internet packet explorer is sent to the opposite end and each node on a first node transmission path through the network probes so as to obtain time delay information of each route path in the first node transmission path.
In this example embodiment, the target network link refers to a network routing path between the application platform and the target ONU, and the target network link may not have a direction. The application platform may be a user-oriented application platform in the enterprise campus, and is used for a user to manage/monitor network information (data traffic, load, and the like of each node in the network). The network probe is a software program capable of acquiring transmission delay of each node of the routing path, and may include a software program corresponding to a Ping (Packet Internet Groper) command, for example. The first node transmission path may be a directional routing path from one node to another node in the target network link, such as the routing path from platform a to OLT B in fig. 2.
Illustratively, as shown in fig. 2, in the target network link (e.g., from application platform a to ONU C), network probes may be installed in platform a and ONU C, respectively, and then the network probe in platform a sends Ping commands to the peer (ONU C) and OLT B, respectively, and the network probe in ONU C sends Ping commands to the peer (platform a) and OLT B, respectively, each Ping command can display the amount of time between sending a loopback request and returning a loopback response in milliseconds, that is, the delay information of each routing path (e.g., the Ping commands from ONU C to OLT B can return the delay information of the routing path).
Step S120, determining the device processing delay of each node in the first node transmission path based on the delay information of each segment of the routing path.
In this exemplary embodiment, the device processing delay refers to the time required for the device corresponding to the node to perform internal processing on data. Illustratively, as shown in fig. 2, the latency information from platform a to OLT B includes the transmission latency of routing path D and the device processing latency (t) of OLT B 3 ) The delay information from ONU C to OLT B includes the device processing delay (t) of the routing path E and OLT B 3 ) However, the delay information from the platform a to the ONU C does not include the device processing delay of the OLT B, and the OLT B device only forwards the information in the routing path and does not perform internal processing. According to the delay information of the different routing paths, the processing delay (such as t) of the equipment corresponding to each node can be determined 3 ). The routing paths D, E are composed of gateways or routers of the paths.
In this example embodiment, the first node transmission path may include a routing path from the application platform to any node in the target network link and a routing path from the target ONU to any node in the target network link.
Step S130, determining the network transmission status of each routing path based on the device processing delay.
In the present exemplary embodiment, a processing latency threshold and a transmission latency threshold, i.e., a first latency threshold, may be set. When the device processing delay exceeds the processing delay first threshold, it can be determined that the device is overloaded with traffic or has data congestion. When the transmission delay (total delay-device processing delay) of the routing path corresponding to the device exceeds a first threshold of the transmission delay, it may be determined that the routing path of the segment is congested. A corresponding second delay threshold for determining device interruption or routing path interruption may also be set, where the second delay threshold may be set separately, or may be set according to a corresponding first delay threshold, which is not limited in this example.
In the network link monitoring method provided by the embodiment of the disclosure, on one hand, network probes may be respectively arranged at two ends of a target network link, and an internet packet seeker is sent to an opposite end and each node on a first node transmission path through the network probes to obtain time delay information of each route path in the first node transmission path; and further determining the equipment processing time delay of each node, and finally determining the network transmission condition of each route path. The network probes at the two ends of the network link are ingeniously utilized to determine the equipment processing time delay, and then the equipment processing time delay can be separated from the time delay information of the routing path, so that the transmission time delay of the routing path can be determined more accurately, and the routing path can be monitored accurately. On the other hand, the network probe disclosed by the invention is realized through a software program, does not depend on a hardware level, can avoid link difference caused by hardware difference between nodes, and can realize flexible deployment and application. In addition, the method and the system utilize the existing Internet packet explorer to monitor the link, do not need additional monitoring deployment, and have strong implementability.
In some embodiments, the method further comprises:
and respectively sending a routing tracking command to the opposite end and the optical line terminal OLT through the network probe so as to obtain two second node transmission paths.
In this example embodiment, the network probe may further include a software program corresponding to the traceroute command, for example, a software program corresponding to the traceroute command, and may further include a traceroute command program corresponding to another operating system, which is not limited in this example. The two second node transmission paths may be a routing route from the application platform to the opposite end (target ONU) and a routing route from the application platform to the OLT. The two second node transmission paths may also be a route from the target ONU to the opposite end (application platform) and a route from the target ONU to the OLT.
Exemplarily, as shown in fig. 3, when the network probe is deployed in the target ONU, the traceroute command is sent to the platform and the OLT respectively, and two obtained transmission paths of the second node are T s And T olt1 ，T s Is R 1 →R 2 →……→R n → application platform; t is olt1 Is the OLT. When the network probe is deployed in an application platform, traceroute commands are respectively sent to a target ONU and an OLT, and two obtained second node transmission paths are T onu And T olt2 ，T onu Is R n →R n-1 →……→R 1 →ONU；T olt2 Is R n →R n-1 →……→R 1 →OLT。
And determining the position of the OLT in the target network link in response to the comparison result of the two second node transmission paths so as to determine the first node transmission path of the target network link.
In this example embodiment, two second node transmission paths may be compared, and a difference node start position of the two second node transmission paths may be determined; the difference node is a node with a different routing path in the two second node transmission paths. Exemplarily, as shown in FIG. 3, for T onu And T olt With the difference node appearing at R 1 After a node, i.e. R 1 The nodes after the node are the difference node starting positions.
And determining the starting position of the difference node as the position of the OLT in the target network link.
In the present exemplary embodiment, the start position of the difference node may be taken as the position of the OLT, for example, in fig. 3, R 1 The node position after the node is the position of the OLT.
Comparing the results returned by the two traceroute commands sent from different positions, it can be seen that when the network probe is located at the ONU side, the first hop from traceroute to the OLT is the OLT; when the network probe is located at the application platform side, T onu And T olt The network probes pass through the same gateway or router, the paths from different positions to the OLT are different, and the routing path T corresponding to the network probe at the ONU side olt Much larger than the results of the application platform side. The difference of the routing paths corresponding to the different probe positions can be applied to probe positioning when the system has only one network probe, namely determining which end of the network link the network probe is located at.
For example, during the execution of the traceroute command, each node in the network link may be represented by an IP address, that is, one IP address corresponds to one node. The second node transmission path may be a path composed of IP addresses in order. When the IP addresses adjacent to the same IP address in the two routing paths are different, the different point is positioned as the insertion position of the OLT. The location can be determined by a network probe at one end only.
In some embodiments, determining the device processing latency of each node in the first node transmission path based on the latency information of each segment of the routing path comprises:
respectively acquiring first time delay information from an initial node to a destination node, second time delay information from the initial node to an intermediate node and third time delay information from the intermediate node to the destination node in a first node transmission path.
In this exemplary embodiment, the intermediate node refers to any routing node located between the start node and the destination node in the transmission path of the first node. The corresponding first delay information, the second delay information and the third delay information can be obtained by respectively sending Ping commands to the starting node, the intermediate node and the destination node.
And summing the second time delay information and the third time delay information, comparing the summation result with the first time delay information, and determining the equipment processing time delay of the intermediate node.
In this exemplary embodiment, the device processing delay of the intermediate node may be determined according to the difference between the summation result and the first delay information, for example, half of the difference may be directly used as the device processing delay, and the difference may also be subjected to network interference term processing (e.g., the difference ± the interference threshold Δ). The difference result of the Ping commands may be averaged for a plurality of times, and then the device processing delay may be further determined, which is not limited in this example.
For example, as shown in fig. 2, a Ping command may be sent to ONU C and OLT B by using a network probe in application platform a, and time delay information T from application platform a to ONU C may be obtained AC And time delay information T from the application platform A to the OLT B AB . Then, a Ping command is sent by using a network probe OLT B in the ONU C to acquire time delay information T from the ONU C to the OLT B BC . As can be seen from fig. 2:
T AB ＝t 1 +t 2 +t 3 ，
T AC ＝t 1 +t 2 +t 4 +t 5 ，
T BC ＝t 3 +t 4 +t 5 ，
therefore, the device processing delay of the intermediate node OLT can be determined as follows:
t 3 ＝(T BC +T AB -T AC )/2。
in the above formula, t 1 、t 3 、t 5 Respectively representing the equipment processing time delay, t, of the Ping command in the equipment of the application platform A, the OLT B and the ONU C 2 Represents the round-trip network transmission delay, t, between the application platform A and the OLT B 4 Representing the round-trip network transmission delay between OLT B and ONU C.
In some embodiments, determining the device processing latency of each node in the first node transmission path based on the latency information of each segment of the routing path further comprises:
acquiring multiple groups of time delay data in a first node transmission path within a preset time period; each group of time delay data comprises first time delay information, second time delay information and third time delay information.
And determining a first time delay information average value, a second time delay information average value and a third time delay information average value in the multiple groups of time delay data.
And determining the equipment processing time delay corresponding to the intermediate node by using the first time delay information average value, the second time delay information average value and the third time delay information average value.
In the present exemplary embodiment, the preset time period may be set according to the time interval for transmitting the Ping command, for example, several times or several tens times of the transmission time interval, which is not limited in the present example. The specific setting can be according to the actual conditions. For example, the interval of time for sending the Ping command is 1 second, and the preset time period may be set to 30 seconds.
In an actual environment, the execution of the Ping command once includes processing time of a transmitting end, network transmission delay and processing time of a receiving end. Because the processing time of the intermediate device to Ping is needed, and the result of executing each Ping command is greatly influenced by the interference factor of the network, in order to reduce the influence of the network interference factor on the accuracy of the processing delay of the device, a statistical method is adopted, namely the statistical characteristics, such as an average value, of the delay information of Ping for a plurality of times in a preset time period are counted, and the device processing delay of each intermediate device is calculated by using the average value, so that the accuracy is improved.
In some embodiments, prior to determining the device processing latency of the intermediate node, the method further comprises: and respectively carrying out data filtering processing on the first time delay information, the second time delay information and the third time delay information.
In this exemplary embodiment, the data filtering process refers to filtering data with a large deviation from a plurality of sets of delay data obtained within a preset time period, that is, filtering data with a large deviation from the first delay information, the second delay information, and the third delay information. For example, a first filtering threshold, a second filtering threshold, and a third filtering threshold may be set for the first delay information, the second delay information, and the third delay information, respectively, and data greater than the first filtering threshold, the second filtering threshold, and the third filtering threshold may be filtered. A normal data interval may also be set for each time delay data, and data outside the corresponding normal data interval may be filtered out, or other data filtering manners may also be adopted, which is not limited in this example.
In this exemplary embodiment, standard deviations of the first delay information, the second delay information, and the third delay information in a preset time period may be respectively calculated, and then a corresponding filtering threshold (including the first filtering threshold, the second filtering threshold, and the third filtering threshold) or a normal data interval may be determined according to each standard deviation information.
The data filtering process can solve the problem that certain delay information generates large deviation due to the fact that a network is interrupted or congestion conditions are serious in a system, and the data with large deviation can generate large influence on the calculation of a final result (such as a delay average value), so that the accuracy of the monitoring of the disclosure is influenced.
In some embodiments, referring to fig. 4, a network link monitoring method according to a specific embodiment of the present disclosure is applied to an industrial PON system, where the industrial PON system is located in an enterprise campus/network inside an enterprise. The monitoring of the network link can be performed through an application platform facing the user plane. The method may specifically comprise the following steps.
Firstly, respectively arranging network probes at two ends of a target network link.
And secondly, respectively sending traceroute commands to an opposite end and an Optical Line Terminal (OLT) through the network probe at any end so as to obtain two second node transmission paths.
And thirdly, comparing the two second node transmission paths, and determining the position of the OLT in the target network link to obtain the first node transmission path.
Fourthly, sending Ping commands to the opposite end and each node on a first node transmission path through network probes at two ends so as to acquire first time delay information from an initial node to a target node, second time delay information from the initial node to an intermediate node and third time delay information from the intermediate node to the target node in the first node transmission path; the intermediate node is a routing node located between the starting node and the destination node in the transmission path of the first node.
And repeating the fourth step periodically to obtain multiple groups of time delay data.
And fifthly, carrying out data filtering processing on the multiple groups of time delay data.
And sixthly, calculating the average value of each type of time delay data in the plurality of groups of time delay data after the data filtering processing.
And step seven, summing the second time delay average value and the third time delay average value, then making a difference between the summation result and the first time delay average value, and determining the equipment processing time delay of the intermediate node according to the difference result.
And eighthly, determining the network transmission condition of each route path based on the equipment processing time delay of the intermediate node.
The detailed descriptions of the steps in the foregoing embodiments may refer to the corresponding descriptions in the foregoing embodiments, and are not repeated here.
In an industrial PON system, both uplink and downlink data flows pass through the OLT, but due to transparent transmission, when a traceroute command is executed, no return path to the OLT node is performed, that is, no OLT node exists in a routing path traced by the traceroute, so that it is necessary to determine the position of the OLT in a network link, insert the OLT into the network link, and acquire inter-node delay information, so that the network link can be monitored more accurately. In fact, the OLT is adjacent to the ONU on the link, that is, the OLT is closer to the ONU than the platform, and the present disclosure can improve the network link monitoring accuracy by the probe program sending a traceroute command to the OLT to determine the position of the OLT.
In practice, since the delay information obtained by executing the Ping instruction includes two parts, namely network transmission delay and device processing delay, when the router or gateway through which the traceroute passes respectively sends the Ping command, the delay of the near-end device is far higher than that of the far-end device, because different types of devices process the received Ping command at different times, a large error is brought to the network delay of each path on the computational link, and the accuracy of network link monitoring is affected.
According to the method, the network probes are arranged at the two ends of the network link, the time delay information among different nodes is detected through the network probes, and the equipment processing time delay of the intermediate node is determined by utilizing the time delay information among the different nodes, so that the time delay information acquired by the Ping command can be divided into the equipment processing time delay and the network transmission time delay, and the network transmission condition of a routing path is determined based on the equipment processing time delay and the network transmission time delay, namely whether overload/congestion occurs in the node or network transmission, and whether network terminals or node faults occur, so that the accurate monitoring of the network link is realized, the accuracy of the network link monitoring is improved, and the monitoring granularity is refined.
The network probe function is realized through the software program, the detection effect difference caused by the difference of different hardware equipment can be shielded, the detection accuracy of the network probe is improved, and the deployment flexibility and the implementation performance of the probe are improved. The method and the device can be applied to different industrial PON systems, avoid the change of monitoring effects caused by the link difference of different PON systems, and have better practicability.
Referring to fig. 5, in this exemplary embodiment, a network link monitoring apparatus 500 is further provided, which may include: a detection module 510, a first determination module 520, and a second determination module 530, wherein: a detection module 510, configured to distribute network probes at two ends of a target network link, respectively, and send an internet packet explorer to an opposite end and each node on a first node transmission path through the network probes, so as to obtain time delay information of each segment of a routing path in the first node transmission path; the first node transmission path is used for indicating a transmission path of information to be transmitted on a target network link; a first determining module 520, configured to determine, based on the delay information of each segment of the routing path, a device processing delay of each node in the first node transmission path; a second determining module 530, configured to determine a network transmission condition of each segment of the routing path based on the device processing latency.
In one embodiment of the present disclosure, the apparatus 500 further comprises a tracking module and a third determining module; the tracking module is used for respectively sending a routing tracking command to the opposite terminal and the optical line terminal OLT through the network probe so as to obtain two second node transmission paths; and the third determining module is used for determining the position of the OLT in the target network link in response to the comparison result of the two second node transmission paths so as to determine the first node transmission path of the target network link.
In one embodiment of the disclosure, the third determining module is further configured to: comparing the two second node transmission paths, and determining the different node starting positions of the two second node transmission paths; the difference node is a node with a different routing path in the two second node transmission paths; and determining the starting position of the difference node as the position of the OLT in the target network link.
In an embodiment of the present disclosure, the second determining module includes an obtaining submodule and a determining submodule, where the obtaining submodule is configured to obtain first delay information from an initial node to a destination node, second delay information from the initial node to an intermediate node, and third delay information from the intermediate node to the destination node in a transmission path of the first node, respectively; the intermediate node is a routing node positioned between the starting node and the destination node in the transmission path of the first node; the determining submodule is used for summing the second time delay information and the third time delay information, comparing a summing result with the first time delay information and determining the equipment processing time delay of the intermediate node.
In one embodiment of the present disclosure, the first determining module 520 may be further configured to: acquiring multiple groups of time delay data in a first node transmission path within a preset time period; each group of time delay data comprises first time delay information, second time delay information and third time delay information; determining a first time delay information average value, a second time delay information average value and a third time delay information average value in the multiple groups of time delay data; and determining the equipment processing time delay corresponding to the intermediate node by using the first time delay information average value, the second time delay information average value and the third time delay information average value.
In an embodiment of the present disclosure, the apparatus 500 further includes a filtering module, where the filtering module is configured to perform data filtering processing on the first delay information, the second delay information, and the third delay information respectively before determining the device processing delay of the intermediate node.
The specific details of each module/unit involved in the monitoring device in the above embodiment have been described in detail in the corresponding monitoring method, and therefore are not described herein again.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the apparatus described in the above embodiments; or may be separate and not incorporated into the device. The computer readable medium carries one or more programs which, when executed by a device, cause the device to perform the method as in the embodiments described below. For example, a device may implement the various steps shown in fig. 1-4, etc.
It should be noted that the computer readable medium shown in the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer-readable signal medium may include a propagated data signal with computer-readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
In addition, in an exemplary embodiment of the present disclosure, an apparatus capable of implementing the above method is also provided. As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 6, the communication device 600 includes a processor 610, a memory 620, a transceiver 630, and a communication bus 640. The processor 610 is coupled to the memory 620 and the transceiver 630, for example, the processor 610 may be coupled to the memory 620 and the transceiver 630 through the communication bus 640. The processor 610 is configured to support the communication device to perform corresponding functions in the monitoring methods of fig. 1-4. The Processor 610 may be a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof. The hardware chip may be an Application-Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a Field-Programmable Gate Array (FPGA), general Array Logic (GAL), or any combination thereof. The memory 620 is used to store program codes and the like. Memory 620 may include Volatile Memory (VM), such as Random Access Memory (RAM); the Memory 620 may also include a Non-Volatile Memory (NVM), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk Drive (HDD) or a Solid-State Drive (SSD); the memory 620 may also comprise a combination of the above types of memory.
The transceiver 630 is used to transmit or receive data.
The processor 610 may invoke the above-described program code to perform the following operations:
respectively arranging network probes at two ends of a target network link, and sending an Internet packet search device to an opposite end and each node on a first node transmission path through the network probes to acquire time delay information of each route path in the first node transmission path; the first node transmission path is used for indicating a transmission path of information to be transmitted on a target network link; determining the equipment processing time delay of each node in the first node transmission path based on the time delay information of each route path; and determining the network transmission condition of each routing path based on the equipment processing time delay.
Optionally, the processor 610 may further determine, based on the delay information of each routing path, a device processing delay of each node in the first node transmission path, and perform the following operations:
respectively acquiring first time delay information from an initial node to a destination node, second time delay information from the initial node to an intermediate node and third time delay information from the intermediate node to the destination node in a first node transmission path; the intermediate node is a routing node between the starting node and the destination node in the transmission path of the first node.
And summing the second time delay information and the third time delay information, comparing the summation result with the first time delay information, and determining the equipment processing time delay of the intermediate node.
Optionally, the processor 610 may further determine, based on the delay information of each segment of the routing path, a device processing delay of each node in the first node transmission path, and perform the following operations:
acquiring multiple groups of time delay data in a first node transmission path within a preset time period; each group of time delay data comprises first time delay information, second time delay information and third time delay information.
And determining a first time delay information average value, a second time delay information average value and a third time delay information average value in the multiple groups of time delay data.
And determining the equipment processing time delay corresponding to the intermediate node by using the first time delay information average value, the second time delay information average value and the third time delay information average value.
Optionally, the processor 610 may further perform the following operations:
and before determining the equipment processing time delay of the intermediate node, respectively carrying out data filtering processing on the first time delay information, the second time delay information and the third time delay information.
It should be noted that, the implementation of each operation may also correspond to the corresponding description of the method embodiments shown in fig. 1 to fig. 4; the processor 610 may also cooperate with the transceiver 630 to perform other operations in the above method embodiments.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to make a device execute the method according to the embodiments of the present disclosure.
Furthermore, the above-described figures are merely schematic illustrations of processes included in methods according to exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
It should be noted that although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order or that all of the depicted steps must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc., are all considered part of this disclosure.
It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.

Claims (10)

1. A network link monitoring method is applied to a Passive Optical Network (PON) system, and is characterized by comprising the following steps:
respectively arranging network probes at two ends of a target network link, and sending an Internet packet search device to an opposite end and each node on a first node transmission path through the network probes to acquire time delay information of each route path in the first node transmission path; the first node transmission path is used for indicating a transmission path of information to be transmitted on the target network link;
determining the equipment processing time delay of each node in the first node transmission path based on the time delay information of each route path;
and determining the network transmission condition of each routing path based on the equipment processing time delay.
2. The method of claim 1, further comprising:
respectively sending a routing tracking command to an opposite terminal and an Optical Line Terminal (OLT) through the network probe so as to acquire two second node transmission paths;
and determining the position of the OLT in the target network link in response to the comparison result of the two second node transmission paths so as to determine the first node transmission path.
3. The method of claim 2, wherein the determining the position of the OLT within the target network link in response to the comparison of the two transmission paths of the second node comprises:
comparing the two second node transmission paths, and determining the different node starting positions of the two second node transmission paths; the difference node is a node with a different routing path in the two second node transmission paths;
and determining the starting position of the difference node as the position of the OLT in the target network link.
4. The method according to claim 1 or 2, wherein the determining the device processing delay of each node in the first node transmission path based on the delay information of each segment of the routing path comprises:
respectively acquiring first time delay information from an initial node to a destination node, second time delay information from the initial node to an intermediate node and third time delay information from the intermediate node to the destination node in the first node transmission path; the intermediate node is a routing node between an initial node and a destination node in the first node transmission path;
and summing the second time delay information and the third time delay information, comparing a summation result with the first time delay information, and determining the equipment processing time delay of the intermediate node.
5. The method of claim 4, wherein the determining the device processing latency of each node in the first node transmission path based on the latency information of each segment of the routing path further comprises:
acquiring multiple groups of time delay data in the first node transmission path within a preset time period; each group of time delay data comprises first time delay information, second time delay information and third time delay information;
determining a first time delay information average value, a second time delay information average value and a third time delay information average value in the multiple groups of time delay data;
and determining the equipment processing time delay corresponding to the intermediate node by using the first time delay information average value, the second time delay information average value and the third time delay information average value.
6. The method of claim 4, wherein prior to determining the device processing latency of the intermediate node, the method further comprises: and respectively carrying out data filtering processing on the first time delay information, the second time delay information and the third time delay information.
7. A network link monitoring device applied to a Passive Optical Network (PON) system is characterized by comprising:
the system comprises a detection module, a routing module and a routing module, wherein the detection module is used for respectively arranging network probes at two ends of a target network link, and sending an Internet packet searcher to an opposite end and each node on a first node transmission path through the network probes so as to acquire time delay information of each route path in the first node transmission path; the first node transmission path is used for indicating a transmission path of information to be transmitted on the target network link;
a first determining module, configured to determine, based on the delay information of each segment of the routing path, a device processing delay of each node in the first node transmission path;
and the second determining module is used for determining the network transmission condition of each route path based on the equipment processing time delay.
8. The apparatus of claim 7, further comprising:
the tracking module is used for respectively sending a route tracking command to the opposite terminal and the optical line terminal OLT through the network probe so as to obtain two second node transmission paths;
a third determining module, configured to determine, in response to a comparison result of the two second node transmission paths, a position of the OLT in the target network link to determine the first node transmission path.
9. A communication device, comprising: a processor; and
a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method of any of claims 1-6 via execution of the executable instructions.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1-6.
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