CN115550223A - Service flow packet loss positioning system, method and storage medium - Google Patents
Service flow packet loss positioning system, method and storage medium Download PDFInfo
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Abstract
The present disclosure provides a system, a method and a storage medium for locating a service flow packet loss, wherein the system for locating a service flow packet loss includes a network device and a centralized controller, the network device includes: the packet loss caching module is used for caching the discarded messages overflowing from the data forwarding queue in the network equipment and recording message information corresponding to the discarded messages; the packet loss information reporting module is used for sending the discarded message and the message information to the centralized controller; and the centralized controller is used for carrying out packet loss positioning processing on the specified service flow based on the discarded message and the message information. The system, the method and the storage medium disclosed by the invention have the advantages that no extra packet loss detection message needs to be sent, and the influence on a network is reduced; the OAM information of packet loss data does not need to be carried in the monitored service flow, the complexity of the equipment can be simplified, and the network congestion position and the packet loss condition can be sensed in real time.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a system, a method, and a storage medium for locating a packet loss of a service flow.
Background
Packet loss behavior caused by network congestion often occurs, and it is necessary to continuously send packet loss detection messages to a network in an active measurement manner to monitor whether the network meets the service quality of a user, as shown in fig. 1; or detecting the packet loss condition of the service flow along with the flow by a mixed measurement mode (such as IOAM). The method of actively sending the detection message needs to inject extra flow into the network, thereby increasing the network load; and the flow-following detection mode reduces the transmission efficiency of the service data by carrying OAM data such as message count and the like in the service message, and also increases the network load. At present, although the packet loss condition of a test flow can be detected by actively sending a detection message, the specific packet loss position of the message cannot be determined; the IOAM and other stream-following detection methods can locate the message discarding position, but increase the complexity of the device.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a system, a method and a storage medium for locating a service flow packet loss.
According to a first aspect of the present disclosure, a service flow packet loss positioning system is provided, including: a network device, comprising: the packet loss caching module is used for caching a discarded message overflowing from a data forwarding queue in the network equipment and recording message information corresponding to the discarded message; a packet loss information reporting module, configured to send the discard packet and the packet information to the centralized controller; and the centralized controller is used for carrying out packet loss positioning processing on the specified service flow based on the discarded message and the message information.
Optionally, each port in the network device is configured with at least one data forwarding queue; the message information includes: device ID, port ID, queue ID, drop time, number of dropped packets.
Optionally, the centralized controller includes: a path device determining module, configured to obtain network topology information, determine, based on the network topology information, a path device ID through which the specified service flow passes, and configure, for a packet loss analyzing module, service flow ID information of the specified service flow and the path device ID; the packet loss analysis module is used for analyzing the discarded message and the message information to acquire analysis information; according to the analysis result, the service flow ID information and the path equipment ID, counting packet loss positioning information of the specified service flow; wherein the packet loss positioning information includes: the path equipment ID of the lost packet, the corresponding packet loss number and the packet loss time.
Optionally, the packet loss analyzing module is configured to analyze the discarded packet and the packet information, and acquire user information and a service type corresponding to the discarded packet; acquiring packet loss statistical information of the specified service flow according to the analysis result, the user information, the service type, the service flow ID information and the path equipment ID; wherein, the packet loss statistical information includes: and the packet loss position and the total packet loss number of the specified service flow, and the packet loss position and the total packet loss number of each user.
Optionally, the parsing information includes: one or more of a source and/or destination MAC address, a source and/or destination IP address, quintuple flow information, application layer information; the discard information includes: the message discarding position, the discarding time and the total number of discarded messages.
Optionally, the packet loss caching module is further configured to perform a clearing process on the cached discard message and the cached message information after the discard message and the message information are sent to the centralized controller.
According to a second aspect of the present disclosure, a method for locating a packet loss of a service flow is provided, where a network device is provided with a packet loss caching module and a packet loss information reporting module, and the method includes: the packet loss caching module caches discarded messages overflowing from a data forwarding queue in the network equipment and records message information corresponding to the discarded messages; the packet loss information reporting module sends the discarded message and the message information to the centralized controller; and the centralized controller carries out packet loss positioning processing on the specified service flow based on the discarded message and the message information.
Optionally, each port in the network device is configured with at least one data forwarding queue; the message information includes: device ID, port ID, queue ID, discard time, number of dropped packets
Optionally, the centralized controller includes: the path equipment determining module and the packet loss analyzing module; the packet loss positioning processing of the specified service flow by the centralized controller based on the discard message and the message information comprises: the path equipment determining module acquires network topology information, determines a path equipment ID through which the specified service flow passes based on the network topology information, and configures the service flow ID information of the specified service flow and the path equipment ID for the packet loss analyzing module; the packet loss analysis module analyzes the discarded message and the message information to acquire analysis information; the packet loss analysis module counts packet loss positioning information of the specified service flow according to an analysis result, the service flow ID information and the path equipment ID; wherein, the packet loss positioning information includes: the path equipment ID where the packet loss occurs, the corresponding packet loss number and the packet loss time.
Optionally, the performing, by the centralized controller, packet loss positioning processing on the specified service flow based on the discard packet and the packet information includes: the packet loss analysis module analyzes the discarded message and the message information to acquire user information and a service type corresponding to the discarded message; the packet loss analysis module acquires packet loss statistical information of the specified service flow according to the analysis result, the user information, the service type, the service flow ID information and the path equipment ID; wherein, the packet loss statistical information includes: and the packet loss position and the total packet loss number of the specified service flow, and the packet loss position and the total packet loss number of each user.
Optionally, the parsing information includes: one or more of a source and/or destination MAC address, a source and/or destination IP address, quintuple flow information, application layer information; the discard information includes: the message discarding position, the discarding time and the total number of discarded messages.
Optionally, after the discarded packet and the packet information are sent to the centralized controller, the packet loss caching module performs a removal process on the cached discarded packet and the cached packet information.
According to a third aspect of the present disclosure, there is provided a computer readable storage medium storing computer instructions for execution by a processor to perform the method as described above.
The system, the method and the storage medium for locating the service flow packet loss are characterized in that a packet loss caching module is added in network equipment, and the discarded messages caused by queue overflow are cached and simultaneously reported to a centralized controller in real time; the method comprises the steps that a packet loss analysis module arranged in an integrated controller analyzes a discarded original message, packet loss positioning detection of a specified service flow is realized according to a path calculation result of the specified service flow, and operation and maintenance personnel can perform fault diagnosis and network optimization; extra packet loss detection messages do not need to be sent, and the influence on the network is reduced; the OAM information of packet loss data does not need to be carried in the monitored service flow, the complexity of the equipment can be simplified, and the network congestion position and the packet loss condition can be sensed in real time.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings may be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic diagram illustrating packet loss detection using an active probing method;
fig. 2 is a block diagram illustrating an embodiment of a service flow packet loss positioning system according to the present disclosure;
fig. 3 is a block diagram illustrating another embodiment of a service flow packet loss positioning system according to the present disclosure;
fig. 4 is a system composition diagram of an embodiment of a service flow packet loss positioning system according to the present disclosure;
fig. 5 is a schematic diagram illustrating a deployment position of a packet loss caching module in a network device according to an embodiment of the system for locating packet loss of a service flow according to the present disclosure;
fig. 6 is a schematic diagram of determining a path for a specified traffic flow according to an embodiment of the traffic flow packet loss positioning system of the present disclosure;
fig. 7 is a flowchart illustrating an embodiment of a method for locating packet loss of a service flow according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In one embodiment, as shown in fig. 2, the present disclosure provides a service flow packet loss positioning system, which includes a network device 10 and a centralized controller 20. The network device 10 may be various, such as a switch, a router, various servers, etc., and the centralized controller 20 may be various controllers, such as a centralized controller of an SDN network, etc.
The network device 10 includes a packet loss caching module 11 and a packet loss information reporting module 12. The packet loss caching module 11 caches the discarded packet overflowing from the data forwarding queue in the network device 10, and records the packet information corresponding to the discarded packet. The packet loss information reporting module 12 sends the discard message and the message information to the centralized controller 20. The centralized controller 20 performs packet loss positioning processing on the specified service flow based on the discard packet and the packet information. The specified service flow may be a service flow which needs to be monitored, and the like, and the service flow may be a video flow, an audio flow, and the like.
Each port in the network device 10 is configured with at least one data forwarding queue, and the packet information includes a device ID, a port ID, a queue ID, a discard time, a packet loss number, and the like. After the discard message and the message information are sent to the centralized controller, the packet loss cache module 11 performs a clearing process on the cached discard message and the message information.
In one embodiment, as shown in fig. 3, the centralized controller 20 includes a path device determining module 21 and a packet loss analyzing module 22. The path device determining module 21 obtains the network topology information, determines a path device ID through which the specified service flow passes based on the network topology information, and configures the service flow ID information and the path device ID of the specified service flow for the packet loss analyzing module. The packet loss analysis module 22 analyzes the discarded packet and the packet information to obtain analysis information; the resolution information includes one or more of a MAC address of the source and/or destination, an IP address of the source and/or destination, quintuple flow information, and application layer information.
The packet loss analyzing module 22 counts packet loss positioning information of the specified service flow according to the analysis result, the service flow ID information and the path device ID; the packet loss positioning information includes a path device ID where a packet loss occurs, a corresponding packet loss number, packet loss time, and the like. The packet loss analyzing module 22 may also analyze the discarded packet and the packet information to obtain the user information and the service type corresponding to the discarded packet. The packet loss analyzing module 22 obtains packet loss statistical information of the specified service flow according to the analyzing result, the user information, the service type, the service flow ID information, and the path device ID, where the packet loss statistical information includes a packet loss position and a total packet loss number of the specified service flow, a packet loss position and a total packet loss number of each user, and the like. The packet loss position may be a path device ID where a packet loss occurs, or the like.
In an embodiment, the packet loss caching module 11 caches the discard packets of each port due to the overflow of the queue, records packet information corresponding to the discard packets, including information such as device ID, port ID, queue/QOS queue ID, discard time, and packet loss number, and immediately sends the discard packets and the packet information to the centralized controller 20. In order to save the storage space of the packet loss cache module 11, after reporting the discarded packet each time, the packet loss cache module 11 immediately clears the cache content. The information reported by the packet loss information reporting module 12 to the centralized controller 20 includes discarded original packets, and information such as device IDs, port IDs, queue/QOS queue IDs, discarding time, packet loss number, and the like to which the discarded packets belong. The position of the packet loss buffering module 11 in the network device 10 is shown in fig. 4.
In one embodiment, as shown in fig. 5, the system for locating a packet loss in a service flow of the present disclosure is composed of two parts, namely, a network device 10 and a centralized controller 20. A packet loss caching module is newly introduced into the network device 10, and is used to cache discarded packets due to queue overflow at each port of the device, cache the discarded packets each time packet loss occurs, and immediately send the discarded packets to the centralized controller 20. In order to save the storage space of the packet loss buffer module, the network device 10 clears the buffer content immediately after each report of the discarded packet.
The packet loss caching module is creatively introduced into the network equipment, the discarded messages overflowing due to the queue are cached and reported to the centralized controller in real time, the user or the service type and the packet loss number to which the discarded messages belong are analyzed by the centralized controller, the packet loss position and the packet loss number of the specified service flow are further determined, and the influence of the existing packet loss detection technology on the network is avoided.
In an embodiment, a packet loss caching module in the network device 10 caches packets overflowing from all ports/queues, records information such as time, number, and identifier of discarded packets, and reports the information to the centralized controller in real time. The centralized controller 20 obtains the network topology and performs path calculation for the specified service flow to obtain all network devices through which the specified service flow passes. The centralized controller 20 configures all network device IDs and specified service flow ID information of a specified service flow path to the built-in packet loss analysis module.
The packet loss analysis module analyzes the collected original discarded message, analyzes the information of the original/target MAC address, the original/target IP address, the quintuple flow information, the flow label and the like of the discarded message, and can also analyze the application layer information of the discarded message. And the packet loss analysis module counts the packet loss number and the packet loss time of the specified service flow for each node of the specified service flow path according to the analysis result, and determines the information such as the packet loss position, the total packet loss number and the like of the specified service flow. The operation and maintenance personnel can sense the position of network congestion and the conditions of packet loss of service flow and the like in real time according to the information acquired from the centralized controller 20, and help the operation and maintenance personnel to take network optimization or flow optimization measures in time.
As shown in fig. 6, after acquiring the network topology information of its management domain, the centralized controller 20 determines a path that passes through all nodes for the specified service flow. The specified traffic flow path may be manually configured in advance and the centralized controller 20 must record this preconfigured path information. For a given traffic flow path, the centralized controller 20 may obtain the given traffic flow path by automatically routing according to the destination IP address of the given traffic flow via an IGP routing protocol, such as by automatically obtaining the given traffic flow path via an Open Shortest Path First (OSPF) routing algorithm.
The routing algorithm used by centralized controller 20 in calculating the paths needs to be consistent with the network device routing algorithm (e.g., the SPF algorithm is uniformly used). As shown in fig. 6, for the path determined by the centralized controller 20 for the specified traffic flow, the path nodes calculated by the centralized controller 20 for the specified traffic flow are network device 12- > network device 13- > network device 14- > network device 15, and this specified traffic flow path should be consistent with the path calculated by the network device through the distributed routing.
Fig. 7 is a flowchart illustrating an embodiment of a method for locating packet loss of a service flow according to the present disclosure, as shown in fig. 7:
In one embodiment, after the discard message and the message information are sent to the centralized controller, the packet loss caching module performs a clearing process on the cached discard message and the message information. The path equipment determining module obtains the network topology information, determines the ID of the path equipment through which the specified service flow passes based on the network topology information, and configures the ID information of the service flow and the ID of the path equipment of the specified service flow for the packet loss analyzing module.
The packet loss analysis module analyzes the discarded message and the message information to acquire analysis information; the packet loss analysis module counts packet loss positioning information of the specified service flow according to the analysis result, the service flow ID information and the path equipment ID; wherein, the packet loss positioning information comprises: the path device ID where the packet loss occurs, the corresponding packet loss number, the packet loss time, and the like.
The packet loss analysis module analyzes the discarded message and the message information to acquire user information and a service type corresponding to the discarded message; the packet loss analysis module acquires packet loss statistical information of the specified service flow according to the analysis result, the user information, the service type, the service flow ID information and the path equipment ID; wherein, the packet loss statistical information includes: and specifying the packet loss position and the total packet loss number of the service flow, and the packet loss position and the total packet loss number of each user.
In one embodiment, the present disclosure provides a computer-readable storage medium, which stores computer instructions, and when executed by a processor, the computer-readable storage medium implements a service flow packet loss positioning method as in any one of the above embodiments.
In the system, the method and the storage medium for locating the service flow packet loss in the embodiment, a packet loss caching module is added in the network device, and is used for caching the discarded messages due to queue overflow and reporting to the centralized controller in real time; the method comprises the steps that a packet loss analysis module arranged in an integrated controller analyzes a discarded original message, packet loss positioning detection of a specified service flow is realized according to a path calculation result of the specified service flow, and operation and maintenance personnel can perform fault diagnosis and network optimization; extra packet loss detection messages do not need to be sent, and the influence on the network is reduced; the OAM information of packet loss data does not need to be carried in the monitored service flow, the complexity of the equipment can be simplified, and the network congestion position and the packet loss condition can be sensed in real time.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (13)
1. A service flow packet loss positioning system comprises:
a network device, comprising:
the packet loss caching module is used for caching a discarded message overflowing from a data forwarding queue in the network equipment and recording message information corresponding to the discarded message;
a packet loss information reporting module, configured to send the discard message and the message information to the centralized controller;
and the centralized controller is used for carrying out packet loss positioning processing on the specified service flow based on the discarded message and the message information.
2. The system of claim 1, wherein each port in the network device is configured with at least one of the data forwarding queues;
the message information includes: device ID, port ID, queue ID, discard time, number of dropped packets.
3. The system of claim 1, wherein,
the centralized controller comprises:
a path device determining module, configured to obtain network topology information, determine, based on the network topology information, a path device ID through which the specified service flow passes, and configure, for a packet loss analyzing module, service flow ID information of the specified service flow and the path device ID;
the packet loss analysis module is used for analyzing the discarded message and the message information to acquire analysis information; counting packet loss positioning information of the specified service flow according to an analysis result, the service flow ID information and the path equipment ID; wherein the packet loss positioning information includes: the path equipment ID where the packet loss occurs, the corresponding packet loss number and the packet loss time.
4. The system of claim 3, wherein,
the packet loss analysis module is used for analyzing the discarded message and the message information to acquire user information and a service type corresponding to the discarded message; acquiring packet loss statistical information of the specified service flow according to the analysis result, the user information, the service type, the service flow ID information and the path equipment ID; wherein, the packet loss statistical information includes: and the packet loss position and the total packet loss number of the specified service flow and the packet loss position and the total packet loss number of each user are specified.
5. The system of claim 3 or 4,
the parsing information includes: one or more of a source and/or destination MAC address, a source and/or destination IP address, quintuple flow information, application layer information;
the discard information includes: the message discarding position, the discarding time and the total number of discarded messages.
6. The system of claim 1, wherein,
the packet loss caching module is further configured to perform a clearing process on the cached discard message and the cached message information after the discard message and the message information are sent to the centralized controller.
7. A method for locating service flow packet loss is provided, wherein a network device is provided with a packet loss caching module and a packet loss information reporting module, and the method comprises the following steps:
the packet loss caching module caches discarded messages overflowing from a data forwarding queue in the network equipment and records message information corresponding to the discarded messages;
the packet loss information reporting module sends the discarded message and the message information to a centralized controller;
and the centralized controller carries out packet loss positioning processing on the specified service flow based on the discarded message and the message information.
8. The method of claim 7, further comprising: wherein each port in the network device is configured with at least one of the data forwarding queues;
the message information includes: device ID, port ID, queue ID, discard time, number of dropped packets.
9. The method of claim 8, wherein the centralized controller comprises: the path equipment determining module and the packet loss analyzing module; the packet loss positioning processing of the specified service flow by the centralized controller based on the discard message and the message information comprises:
the path equipment determining module acquires network topology information, determines a path equipment ID through which the specified service flow passes based on the network topology information, and configures the service flow ID information of the specified service flow and the path equipment ID for the packet loss analyzing module;
the packet loss analysis module analyzes the discarded message and the message information to acquire analysis information;
the packet loss analysis module is used for counting packet loss positioning information of the specified service flow according to an analysis result, the service flow ID information and the path equipment ID;
wherein the packet loss positioning information includes: the path equipment ID of the lost packet, the corresponding packet loss number and the packet loss time.
10. The method according to claim 9, wherein the performing, by the centralized controller, packet loss positioning processing on a specified service flow based on the discard packet and the packet information includes:
the packet loss analysis module analyzes the discarded message and the message information to acquire user information and a service type corresponding to the discarded message;
the packet loss analysis module acquires packet loss statistical information of the specified service flow according to the analysis result, the user information, the service type, the service flow ID information and the path equipment ID;
wherein, the packet loss statistical information includes: and the packet loss position and the total packet loss number of the specified service flow and the packet loss position and the total packet loss number of each user are specified.
11. The method of claim 9 or 10,
the parsing information includes: one or more of a source and/or destination MAC address, a source and/or destination IP address, quintuple flow information, application layer information;
the discard information includes: message discarding position, discarding time and total number of discarded messages.
12. The method of claim 7, wherein,
and after the discarded message and the message information are sent to the centralized controller, the packet loss caching module performs removal processing on the cached discarded message and the cached message information.
13. A computer-readable storage medium having stored thereon computer instructions for execution by a processor of the method of any one of claims 1 to 6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116743630A (en) * | 2023-06-28 | 2023-09-12 | 北京神州数码云科信息技术有限公司 | A method for monitoring and processing packet loss during the forwarding process of business flows |
| CN117294576A (en) * | 2023-11-27 | 2023-12-26 | 南京华芯科晟技术有限公司 | Abnormal message processing method, device, equipment and medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116743630A (en) * | 2023-06-28 | 2023-09-12 | 北京神州数码云科信息技术有限公司 | A method for monitoring and processing packet loss during the forwarding process of business flows |
| CN117294576A (en) * | 2023-11-27 | 2023-12-26 | 南京华芯科晟技术有限公司 | Abnormal message processing method, device, equipment and medium |
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