WO2016184245A1

WO2016184245A1 - Tunnel packet loss detecting method, apparatus and network communication device

Info

Publication number: WO2016184245A1
Application number: PCT/CN2016/076901
Authority: WO
Inventors: 李琴
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-05-15
Filing date: 2016-03-21
Publication date: 2016-11-24
Also published as: CN106301821A

Abstract

The present invention provides a tunnel packet loss detecting method, apparatus and network communication device. The transmitting frequency of transmitting detecting request packets at a head node is improved, and the quantity statistic and report of transmitted and received packets are performed at each node in a tunnel, so that a quick and exact tunnel packet loss detecting is achieved. The present invention can be applied in a two-way tunnel and a one-way tunnel, and can perform a statistic of transmitted and received packets in a tunnel for each node in a link, and therefore the specific packet loss location and quantity can be exactly determined, and the network fault point can be quickly located. A much convenient way is provided for the engineering maintenance, and requirements of the network operation and maintenance can be satisfied.

Description

Tunnel packet loss detection method, device and network communication device

Technical field

The present invention relates to the field of MPLS (Multi-Protocol Label Switching) network technology, and in particular, to a tunnel packet loss detection method, apparatus, and network communication device.

Background technique

Link packet loss detection is a common network maintenance function. Accurate and fast packet loss detection is extremely important for network maintenance. There are three main types of packet loss detection tools available:

The first category is OAM (Operations, Administration, and Maintenance, Operations Management and Maintenance) tools. TMP (T-MPLS Path) layer, TMC (T) in the MPLS (Frame Loss Detection) function of the MPLS-TP (Multi-Protocol Label Switching Transport Profile) OAM The MPLS function of the -MPLS Channel layer can only detect end-to-end packet loss based on the service path and cannot locate a specific packet loss point. Although the LM frame of the TMS layer can detect the packet loss rate step by step, it can only count the packet loss of the segment layer link. Packet loss within a node cannot be counted.

The second type is the IP (Internet Protocol) Ping and the LSP (label switched path) Ping tool. This type of tool can detect connectivity between interfaces and detect packet loss when the ping packet rate is high. However, this method is limited by the software processing performance, the packet loss statistics are not accurate, and the intermediate node packet loss detection is still not supported.

The third category is the performance statistics tool. Port performance statistics are often provided. This mode can only view the packet loss and error packets of the node. It can only be analyzed roughly and the accuracy is very low.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a tunnel packet loss detection method, device, and network communication device, which accurately locates the location and number of service packet loss in the network.

The technical solution adopted by the embodiment of the present invention is that the tunnel packet loss detection method comprises a tunnel, a plurality of intermediate nodes, and a tail node, and the process performed by the head node includes:

The head node sends a detection request message to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistics to the monitoring device for the number of the detection request messages sent and received by the intermediate node and the tail node; the set frequency is greater than The frequency of sending Ping packets used for network connectivity and network speed check;

The head node collects statistics on the sent detection request packets and sends the statistics to the monitoring device.

Optionally, in the case that the tunnel includes a bidirectional path, and the forward path in the tunnel is used to transmit a detection request message, and the reverse path in the tunnel is used to transmit a corresponding detection response message:

In the forward path, the head node sends a detection request message to the intermediate node according to the set frequency;

The process performed by the foregoing head node further includes:

In the reverse path, the head node collects statistics on the received detection response packets, and reports the statistics to the monitoring device.

The embodiment of the present invention further provides a tunnel packet loss detection method, where a node, a plurality of intermediate nodes, and a tail node form a tunnel, and the process performed by the intermediate node includes:

During the process of receiving and forwarding the detection request packet, the intermediate node performs statistics on the number of the detection request packets sent and received, and reports the statistical result to the monitoring device; the frequency of the detection request message sent from the head node of the tunnel conforms to the setting. The frequency set by the above is greater than the transmission frequency of the ping packet used for network connectivity and network speed check.

Optionally, the number of the detection request packets sent and received is counted, including:

The number of the received detection request messages is counted according to an ACL (Access Control List) rule, based on the inbound label and the information indicating the type of the packet.

On the basis of the outbound label of the forwarded detection request packet and the information of the packet type reflected by the forwarded detection request message, the intermediate node performs the quantity statistics on the sent detection request message according to the ACL rule.

Optionally, the foregoing information that reflects the packet type includes: packet type information, and/or port information.

The process performed by the foregoing intermediate node specifically includes:

During the process of receiving and forwarding the detection request message, the intermediate node performs statistics on the number of the detection request packets sent and received on the forward path and the reverse path, and reports the statistics on the corresponding path to the monitoring device. .

The embodiment of the present invention further provides a tunnel packet loss detection method, where a node, a plurality of intermediate nodes, and a tail node form a tunnel, and the process performed by the tail node includes:

The statistics of the received detection request packets are reported to the monitoring device; the frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the set frequency is greater than the network connectivity and The sending frequency of the ping packets used in the network speed check.

In the forward path, the number of the received detection request packets is counted, and the statistics are reported to the monitoring device.

The process performed by the above tail node further includes:

The tail node finds a corresponding reverse path according to the forward path where the received detection request message is received;

In the reverse path, the tail node sends a detection response message to the intermediate node, so that each intermediate node reports the statistics of the detection response packets sent and received by the intermediate node to the monitoring device;

The tail node performs statistics on the number of the above-mentioned detection response packets sent, and sends the statistics to the monitoring device.

The embodiment of the invention further provides a tunnel packet loss detecting device, which is located in a head node in a tunnel, and the device includes:

The sending module is configured to send a detection request message to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistical result to the monitoring device for the number of the detection request messages sent and received by the intermediate node and the tail node; The frequency of the ping packet is greater than the transmission frequency of the ping packet used for network connectivity check and network speed check;

The first statistic module is configured to collect statistics on the sent detection request packets by the head node, and send the statistics to the monitoring device.

The embodiment of the invention further provides a tunnel packet loss detecting device, which is located in any intermediate node in the tunnel, and the device includes:

The second statistic module is configured to collect, during the process of receiving and forwarding the detection request packet, the number of the detection request packets sent and received, and report the statistics to the monitoring device; the detection request message is sent from the head node of the tunnel. The frequency meets the set frequency. The frequency set above is greater than the transmission frequency of the ping packet used for network connectivity and network speed check.

The embodiment of the invention further provides a tunnel packet loss detecting device, which is located in a tail node in the tunnel, and the device includes:

The third statistic module is configured to perform statistics on the number of the received detection request messages, and report the statistics to the monitoring device; the frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the foregoing setting The frequency is greater than the transmission frequency of the ping packets used for network connectivity and network speed check.

The embodiment of the invention further provides a network communication device, which comprises at least one of the tunnel packet loss detecting devices located in the head node, the intermediate node and the tail node.

With the above technical solution, the embodiment of the present invention has at least the following advantages:

In the embodiment of the present invention, the tunnel packet loss detecting method, device, and network communication device are sent by lifting at the head node. Detects the sending frequency of the request packet and the statistics and reports of the number of packets sent and received in each node in the tunnel. The fast and accurate tunnel packet loss detection can be applied to the bidirectional tunnel and the unidirectional tunnel. Each node performs tunneling packet statistics, accurately determines the location and number of specific packet loss, and quickly locates the network fault point, providing an extremely convenient means for engineering maintenance and meeting the needs of network operation and maintenance.

DRAWINGS

1 is a flowchart of a head node execution in a case where a tunnel includes only a one-way path according to the first embodiment of the present invention;

2 is a flowchart of execution of a head node in a case where a tunnel includes a bidirectional path according to the first embodiment of the present invention;

3 is a flowchart of an intermediate node execution in a case where a tunnel only includes a unidirectional path according to a second embodiment of the present invention;

4 is a flowchart of an intermediate node execution in a case where a tunnel includes a bidirectional path according to a second embodiment of the present invention;

5 is a flowchart of execution of a tail node in a case where a tunnel includes a bidirectional path according to a third embodiment of the present invention;

6 is a schematic structural diagram of a tunnel packet loss detecting apparatus according to a fourth embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a tunnel packet loss detecting apparatus according to a fifth embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a tunnel packet loss detecting apparatus according to a sixth embodiment of the present invention; FIG.

9 is a schematic structural diagram of a networking of an eighth embodiment of the present invention;

10 is a schematic structural diagram of a structure of a head node A according to an eighth embodiment of the present invention;

FIG. 11 is a schematic structural diagram of the intermediate nodes B and C according to the eighth embodiment of the present invention.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

In the first embodiment of the present invention, a tunnel packet loss detection method is composed of a node, a plurality of intermediate nodes, and a tail node. As shown in FIG. 1, the process performed by the head node includes the following specific steps:

In step S101, the head node sends a set number of detection request messages to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistics of the detection request packets sent and received by the intermediate node and the tail node to the monitoring device. The frequency set by the above is greater than the transmission frequency of the ping packet used for the network connectivity check and the network speed check, but the transmission bandwidth of the tunnel is required to be the upper limit, and the transmission bandwidth of the tunnel is usually the physical port on the network side of the communication device. Transmission bandwidth.

Step S102: The head node performs quantity statistics on the sent detection request message, and sends the statistics result to the monitoring device.

Specifically, in the embodiment of the present invention, a tunnel instance needs to be configured in the head node, the tail node, and each intermediate node, so that a corresponding tunnel can be formed in the head node, the plurality of intermediate nodes, and the tail node, and the tunnel instance specifies When the packet is transmitted through the corresponding tunnel, each node needs to be marked with an outgoing label and an incoming label that needs to be identified. For example, when the head node sends a detection request message, the label needs to be marked on the detection request message, and the label is sent out. The tag is used as an ingress tag carried by the detection request message when the intermediate node receives the detection request message, and when the intermediate node sends the detection request message, it will be tagged with the outbound label of the tunnel instance.

In addition, a detection instance needs to be configured in the head node and the tail node. The detection instance specifies the encapsulation mode of the detection request message. If the tunnel is in the tunnel of the bidirectional path, the detection instance further specifies the detection request message. The corresponding detection response packet is encapsulated.

Further, since the tunnels are respectively a unidirectional path and a bidirectional path, the foregoing steps S101-102 are actually a technical solution in the case where the tunnel only includes a unidirectional path, and at this time, the head node follows the set frequency. The unidirectional path sends a detection request message to the intermediate node.

As shown in FIG. 2, in the case where the tunnel includes a bidirectional path, and the forward path in the tunnel is used to transmit a detection request message and the reverse path in the tunnel is used to transmit a corresponding detection response message:

Step S101 is specifically: step S101-1, in the forward path, the head node sends a detection request message to the intermediate node according to the set frequency;

The flow performed by the foregoing head node includes, in addition to the step S101-1 and the step S102-1 which is identical to the step S102, the following:

Step S103-1, in the reverse path, the head node performs quantity statistics on the received detection response message, and reports the statistical result to the monitoring device.

Specifically, in step S103-1, the head node performs quantity statistics on the received detection response message, including:

The head node finds the detection instance in the corresponding tunnel instance according to the received ingress label carried in the foregoing detection response message, and the purpose is to determine that the detection response message belongs to the detection instance, and the detection response message is Perform quantitative statistics.

The second embodiment of the present invention is a tunnel packet loss detection method. The method in this embodiment and the method in the first embodiment all belong to the same technical idea. The difference is that this embodiment describes the present invention from the perspective of an intermediate node. Technical solutions.

In the tunnel packet loss detection method of the embodiment, a tunnel is formed by a node, a plurality of intermediate nodes, and a tail node. As shown in FIG. 3, the process performed by the intermediate node includes:

In step S201, the intermediate node performs the quantity statistics on the sent and received detection request messages in the process of receiving and forwarding the detection request message. The frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the set frequency is greater than the transmission frequency of the ping message used in the network connectivity check and the network speed check, but the transmission bandwidth of the tunnel is required. The upper limit.

Specifically, in step S201, the number of the detection request messages sent and received is counted, including:

And performing, according to the ACL rule, the quantity of the received detection request message according to the ACL rule, based on the inbound label and the information indicating the type of the packet, which are received by the detection request message;

The above information reflecting the message type includes: message type information, and/or port information.

In step S202, the statistical result is reported to the monitoring device. Specifically, the statistical result may be reported based on the instruction of the monitoring device, or the statistical result may be reported to the monitoring device.

Further, since the tunnels are respectively a unidirectional path and a bidirectional path, the foregoing steps S201-202 are actually a technical solution in the case where the tunnel only includes a unidirectional path, and at this time, the intermediate node is on the unidirectional path. The number of the detection request packets sent and received is counted separately, and the statistics are reported to the monitoring device.

As shown in FIG. 4, in the case where the tunnel includes a bidirectional path, and the forward path in the tunnel is used to transmit a detection request message and the reverse path in the tunnel is used to transmit a corresponding detection response message:

The step S201 is specifically the step S201-1: in the process of receiving and forwarding the detection request message, the intermediate node performs the quantity statistics on the detection request message sent and received on the forward path and the reverse path respectively; The frequency of the request message sent from the head node of the tunnel conforms to the set frequency. The set frequency is greater than the transmission frequency of the ping packet used for network connectivity and network speed check, but the upper limit of the transmission bandwidth of the tunnel is required. .

The step S202 is specifically reported to the step S202-1: the statistical result on the corresponding path is reported to the monitoring device.

The third embodiment of the present invention is a tunnel packet loss detection method. The method in this embodiment and the method in the first embodiment all belong to the same technical idea. The difference is that the present embodiment describes the present invention in terms of the tail node. Technical solutions.

In the tunnel packet loss detection method of the embodiment, a tunnel is formed by a node, a plurality of intermediate nodes, and a tail node, and the process performed by the tail node includes:

Step S301: Performing quantity statistics on the received detection request message, and reporting the statistical result to the monitoring device; the frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the set frequency is greater than the network. The transmission frequency of the ping packets used for the connectivity and network speed check must be based on the transmission bandwidth of the tunnel.

Further, since the tunnel is respectively a unidirectional path and a bidirectional path, the foregoing step S301 is actually a technical solution in a case where the tunnel only includes a unidirectional path, and at this time, on the unidirectional path, the tail node is for receiving The number of the detection request packets is counted, and the statistics are reported to the monitoring device.

As shown in FIG. 5, in the case where the tunnel includes a bidirectional path, and the forward path in the tunnel is used to transmit a detection request message and the reverse path in the tunnel is used to transmit a corresponding detection response message:

The step S301 is specifically the step S301-1: in the forward path, the tail node performs the quantity statistics on the received detection request message, and reports the statistical result to the monitoring device;

The process performed by the above tail node further includes:

Step S302-1: The tail node finds a corresponding reverse path according to the forward path where the received detection request message is located;

Step S303-1: In the reverse path, the tail node sends a detection response message to the intermediate node, so that each intermediate node and the head node report the statistics to the monitoring device for the number of the detection response messages sent and received by the initiating node;

Step S304-1: The tail node performs quantity statistics on the sent detection response message sent, and sends the statistics result to the monitoring device.

In the fourth embodiment of the present invention, corresponding to the first embodiment, this embodiment introduces a tunnel packet loss detecting device, which is located in a head node in a tunnel. As shown in FIG. 6, the device includes the following components:

The sending module 600 is configured to send a set number of detection request messages to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistics of the detection request messages sent and received by the intermediate node and the tail node to the monitoring. The frequency set by the above is limited to the transmission bandwidth of the tunnel;

The first statistic module 601 is configured to perform statistics on the number of the detection request packets sent by the head node, and send the statistics to the monitoring device.

The fifth embodiment of the present invention corresponds to the second embodiment. This embodiment introduces a tunnel packet loss detecting device, which is located in any intermediate node in the tunnel. As shown in FIG. 7, the device includes the following components:

The second statistic module 700 is configured to perform statistics on the number of the detection request messages sent and received in the process of receiving and forwarding the detection request message, and report the statistics to the monitoring device. The frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the set frequency is greater than the transmission frequency of the ping message used in the network connectivity check and the network speed check, but the transmission bandwidth of the tunnel is required. The upper limit.

The sixth embodiment of the present invention corresponds to the third embodiment. This embodiment introduces a tunnel packet loss detecting device, which is located in a tail node in the tunnel. As shown in FIG. 8, the device includes the following components:

The third statistic module 800 is configured to perform statistics on the number of the received detection request messages, and report the statistical result to the monitoring device; the frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the foregoing setting The fixed frequency is greater than the transmission frequency of the ping packet used for network connectivity and network speed check, but the upper limit of the transmission bandwidth of the tunnel is required.

A seventh embodiment of the present invention is a network communication device, which can be understood as a physical device. The network communication device of the present embodiment includes at least the tunnel loss described in the fourth embodiment, the fifth embodiment, and the sixth embodiment. One of the detection devices.

The eighth embodiment of the present invention is based on the foregoing embodiment, and how to perform fast Lsp ping between PTN devices in a PTN (Package Transport Network) network, as shown in FIG. 9 11 introduces an application example of the present invention.

A fast Lsp Ping detection method in this embodiment can meet the requirement of rapidly forwarding a tunnel packet forwarding node at the engineering site.

In this embodiment, the LspPing detection function of the tunnel with the bidirectional path is implemented by using the networking structure shown in FIG. 9, and the LspPing detection function needs to be enabled on the tunnel of each node of the networking.

Step 1: Enable LspPing detection on the tunnels of each node in the networking.

1) Tunnel configuration and establishment of corresponding business model.

A service topology model is established according to the service configuration, and the tunnel instance is configured to form a tunnel composed of the head node A, the intermediate nodes B and C, and the tail node Z.

2) Head node A configuration: Enable the fast tunnel ping function as required, and configure the packet length and the tunnel transmission bandwidth, and then bind the LspPing instance (similar to the detection instance in the above embodiment) to the intermediate nodes B and C. The type of the head node A belongs to the PE node, that is, the edge node. The composition of the node is as shown in Figure 10. The LspPing packet processing module in the head node calculates the frequency of sending packets according to the configured packet length and the tunnel transmission bandwidth. The highest packet transmission frequency that can be set is obtained by dividing the transmission bandwidth of the tunnel by the packet length.

3) Intermediate node B and C configuration: After the fast tunnel ping function is enabled, the ACL rule of the switch chip is configured, and the Request packet is sent according to the outgoing label, the incoming label, the port, and the packet type carried in the Request packet or the Reply packet. The number of text or Reply packets. The types of the intermediate nodes B and C belong to the P node, that is, the non-edge node. The composition of the nodes is shown in Figure 11, where the NNI port is the port on the network side.

4) Tail node Z configuration: After the fast tunnel ping function is enabled, the tunnel information including the bidirectional path is associated with the corresponding egress path information on the inbound path, so as to encapsulate the tunnel related information when the LspPing Reply message is sent back. The inbound path in the tail node in this embodiment corresponds to the forward path in the foregoing embodiment, and the outbound path corresponds to the reverse path in the foregoing embodiment.

Step 2: Forward LspPing processing (Request message).

After the LSR is enabled, the LspPing packet processing module in the header node encapsulates the Request packet and sends the packet. At the same time, the LspPing packet processing module starts to collect and send Request packets for the LspPing instance, and configures the switch chip to extract the Request packet.

The intermediate node needs to forward the Request packet according to the service, and according to the outgoing packet carried in the Request packet or The inbound label, port, and packet type collect statistics on the number of Request packets received and sent. Both the outgoing label and the incoming label are tunnel labels that conform to the tunnel instance.

The tail node receives the request packet, and the ACL rule extracts the packet to the LspPing packet processing module of the tail node. The LspPing packet processing module finds the corresponding LspPing instance according to the tunnel label, and obtains a forward path corresponding to the packet. The reverse path encapsulates the Reply packet and sends it back according to the information about the reverse path. It also counts the number of received Request packets and the number of Reply packets sent.

Step 3: Reverse LspPing processing (Reply message).

After receiving the request packet, the tail node needs to find the outbound path corresponding to the inbound path of the LspPing instance, reply a Reply packet according to the service information of the outbound path, and count the number of Reply packets returned at the tail node.

The intermediate node needs to forward the Reply packet according to the service, and collect statistics on the number of Reply packets in the receiving and sending directions according to the outgoing label, the incoming label, the port, and the packet type carried in the Reply packet.

After receiving the Reply packet, the head node extracts the packet and sends the packet to the LspPing packet processing module of the head node. The LspPing packet processing module searches the corresponding LspPing instance according to the tunnel label, and performs the Reply packet. Finalize the process and count the corresponding number of packets received.

Step 4: After the LspPing test is stopped, query the number of packets sent and received by each node and display the statistics.

1) For the head-to-tail node, query the number of packets sent and received by the LspPing packet processing module.

2) For the intermediate node, the number of packets sent and received based on the tunnel label, port, and packet type is queried from the switch chip that uses the ACL rule.

3) Collect statistics of each node and display them. The statistics of the number of the packets sent and received by the nodes in the forward path are as shown in Table 1. The statistics of the number of packets sent and received by the nodes in the reverse path are shown in Table 2.

Table 1

Table 2

In this embodiment, the LspPing function of the tunnel including the bidirectional path is used as an example. For the tunnel that only includes the unidirectional path, only the sending and receiving of the Request packet is counted and displayed, which is similar to the implementation of this embodiment.

The tunnel packet loss detection method, device, and network communication device in the embodiment of the present invention can implement fast and accurate tunnel packet loss detection, and can be applied to a bidirectional tunnel and a unidirectional tunnel, and can perform tunneling packet transmission and reception statistics for each node on the link. Accurately determine the location and quantity of specific packet loss, and quickly locate the network fault point, providing an extremely convenient means for engineering maintenance, which can meet the needs of network operation and maintenance.

The technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood by the description of the specific embodiments. However, the accompanying drawings are only for the purpose of illustration and description, and are not intended to limit.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, the head node sends a detection request message to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistical result to the monitoring device for the number of the detection request messages sent and received by the intermediate node and the tail node; the set frequency The sending frequency of the ping packets used when the network connectivity is checked and the network speed is checked.

S2, the head node performs quantity statistics on the sent detection request message, and sends the statistics result to the monitoring device.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and is to those skilled in the art. Many variations and modifications of the invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

In the embodiment of the present invention, the fast and accurate tunnel packet loss detection is implemented by using the sending frequency of the sending detection request message at the head node and the statistics and reporting of the number of the sending and receiving packets in each node in the tunnel. It can be applied to bidirectional tunnels and unidirectional tunnels. It can collect and collect statistics on tunnels for each node on the link, accurately determine the location and number of specific packet loss, and quickly locate the network fault point, providing an extremely convenient means for engineering maintenance. The need for network operation and maintenance.

Claims

A tunnel packet loss detection method consists of a node, a plurality of intermediate nodes, and a tail node, and the process performed by the head node includes:

The head node sends a detection request message to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistical result to the monitoring device for the number of the detection request messages sent and received by the intermediate node and the tail node; the set frequency The sending frequency of the ping packets used when the network connectivity is checked and the network speed is checked.

The head node collects statistics on the sent detection request packets and sends the statistics to the monitoring device.
The tunnel packet loss detecting method according to claim 1, wherein the tunnel includes a bidirectional path, and a forward path in the tunnel is used to transmit a detection request message and a reverse path in the tunnel is used. In the case of transmitting the corresponding detection response message:

In the forward path, the head node sends a detection request message to the intermediate node according to the set frequency;

The process performed by the head node further includes:

In the reverse path, the head node performs statistics on the number of the received detection response packets, and reports the statistics to the monitoring device.
A tunnel packet loss detection method consists of a node, a plurality of intermediate nodes and a tail node, and the process performed by the intermediate node includes:

During the process of receiving and forwarding the detection request message, the intermediate node performs statistics on the number of the detection request packets sent and received, and reports the statistics to the monitoring device; the frequency of the detection request message is sent from the head node of the tunnel. The set frequency is greater than the transmission frequency of the ping packet used for network connectivity and network speed check.
The tunnel packet loss detection method according to claim 3, wherein the number of the detection request packets sent and received is counted, including:

And performing, according to the access control list ACL rule, quantity statistics of the received detection request message, on the basis of the inbound label and the information indicating the packet type carried in the received detection request message;

On the basis of the outbound label of the forwarded detection request packet and the information of the packet type reflected by the forwarded detection request message, the intermediate node performs the quantity statistics on the sent detection request message according to the ACL rule.
The tunnel packet loss detecting method according to claim 4, wherein the information reflecting the packet type includes: packet type information, and/or port information.
The tunnel packet loss detecting method according to claim 3, wherein the tunnel includes a bidirectional path, and a forward path in the tunnel is used to transmit a detection request message and a reverse path in the tunnel is used. In the case of transmitting the corresponding detection response message:

The process performed by the intermediate node specifically includes:

During the process of receiving and forwarding the detection request message, the intermediate node performs statistics on the number of the detection request packets sent and received on the forward path and the reverse path, and reports the statistics on the corresponding path to the statistics. Monitoring equipment.
A tunnel packet loss detection method consists of a node, a plurality of intermediate nodes, and a tail node, and the process performed by the tail node includes:

The tail node performs statistics on the received detection request message, and reports the statistical result to the monitoring device; the frequency of the detection request message sent from the head node of the tunnel conforms to the set frequency, and the set frequency is greater than The frequency of sending ping packets used for network connectivity and network speed check.
The tunnel packet loss detecting method according to claim 7, wherein the tunnel includes a bidirectional path, and a forward path in the tunnel is used to transmit a detection request message and a reverse path in the tunnel is used. In the case of transmitting the corresponding detection response message:

In the forward path, the tail node performs statistics on the number of the received detection request packets, and reports the statistics to the monitoring device.

The process performed by the tail node further includes:

The tail node finds a corresponding reverse path according to the forward path of the received detection request message;

In the reverse path, the tail node sends a detection response message to the intermediate node, so that each intermediate node reports the statistics of the detection response packets sent and received by the intermediate node to the monitoring device;

The tail node performs statistics on the number of the detected response packets sent, and sends the statistics to the monitoring device.
A tunnel packet loss detecting device is located in a head node in a tunnel, and the device includes:

The sending module is configured to send a detection request message to the intermediate node according to the set frequency, so that each intermediate node and the tail node report the statistics to the monitoring device for the number of the detection request messages sent and received by the intermediate node and the tail node; The fixed frequency is greater than the transmission frequency of the ping packet used for network connectivity and network speed check;

The first statistic module is configured to collect statistics on the sent detection request packets by the head node, and send the statistics to the monitoring device.
A tunnel packet loss detecting device is located in any intermediate node in a tunnel, and the device includes:

The second statistic module is configured to collect, during the process of receiving and forwarding the detection request message, the number of the detection request packets sent and received, and report the statistics to the monitoring device; the detection request message is from the head node of the tunnel. The frequency of the transmission conforms to the set frequency, and the set frequency is greater than the transmission frequency of the ping packet used for network connectivity and network speed check.
A tunnel packet loss detecting device is located in a tail node in a tunnel, and the device includes:

The third statistic module is configured to perform statistics on the received detection request packets and report the statistical results. The frequency of the detection request message sent from the head node of the tunnel is consistent with the set frequency, and the set frequency is greater than the network connection and the transmission frequency of the ping message used in the network speed check.
A network communication device comprising at least one of the tunnel packet loss detecting devices according to claims 9, 10 and 11.