WO2013127164A1

WO2013127164A1 - Method for triggering bypass equipment switching, and bypass equipment switching method and device

Info

Publication number: WO2013127164A1
Application number: PCT/CN2012/080931
Authority: WO
Inventors: 王永飞; 黎莉
Original assignee: 华为技术有限公司
Priority date: 2012-02-28
Filing date: 2012-09-03
Publication date: 2013-09-06
Also published as: CN102571457B; CN102571457A

Abstract

Provided are a method and device for triggering bypass equipment switching, and a bypass equipment switching method and device. The method comprises: detecting the real-time traffic of straight-path equipment; judging whether the traffic of the straight-path equipment is abnormal; and when the traffic of the straight-path equipment is abnormal, sending switching indication information for triggering the bypass equipment to switch to a protection pathway. The method for triggering bypass equipment switching provided in the embodiments of the present application triggers the bypass equipment to switch to a protection pathway by detecting the abnormal condition of the internal traffic of straight-path equipment, and increases the reliability of bypass equipment switching.

Description

Method for triggering bypass device switching, bypass device switching method and device The application is submitted to the Chinese Patent Office on February 28, 2012, and the application number is

201210048044.2, the entire disclosure of which is incorporated herein by reference in its entirety in its entirety in the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire Technical field

The present invention relates to the field of network communication technologies, and in particular, to a method for triggering handover of a bypass device, a method and device for switching a bypass device. Background technique

In the process of network communication, more and more networks use direct route deployment, that is, serial devices are connected in series between network devices or between networks. Once a direct device fails, the entire link is caused. The communication is interrupted, so the link where the straight-line device is located needs to be protected to improve the reliability of the network.

At present, the bypass technology is generally used to protect the link where the direct-path device is located. The principle is as follows: The bypass device detects the optical signal of the outbound interface of the straight-channel device in real time, and considers that the straight-channel device is faulty when it detects that there is no optical signal on the outbound interface of the straight-channel device. The trigger bypass device switches the communication link to the protection path. Ensure normal communication at both ends of the link.

However, in many cases, such as when some modules inside the straight-line device fail, the system software cannot sense it and cannot cause a system reset. At this time, the outgoing interface of the straight-circuit device still has light, and the bypass device cannot be realized. Switching, causing the link to be interrupted. Summary of the invention

The embodiment of the invention provides a method for triggering the switching of the bypass device. The bypass device is triggered to switch the communication link to the protection path by detecting the abnormal traffic condition inside the straight device, thereby improving the reliability of the bypass device switching. According to an aspect of an embodiment of the present invention, a method for triggering a bypass device switching is provided, including:

Detect real-time traffic of straight-line devices; Determining whether the straight line device has abnormal traffic;

When the flow device is abnormal in traffic, the switching instruction information for triggering the bypass device to switch the communication link to the protection path is sent.

According to another aspect of the embodiments of the present invention, a method for switching a bypass device includes: detecting an optical signal strength of an outbound interface of a straight device, and monitoring whether switching indication information is received, when the optical device exits the interface When the signal strength is lower than a preset light intensity threshold or when the switching indication information is received, the communication link is switched to the protection path.

According to still another aspect of the embodiments of the present invention, an apparatus for triggering a bypass device switching is provided, including:

a detection module, configured to detect real-time traffic of the straight-line device;

a determining module, configured to determine, according to the real-time traffic, whether a traffic error occurs in the direct-path device, or a triggering module, configured to send, when the straight-line device generates a traffic abnormality, a trigger for triggering the bypass device to switch the communication link to The switching indication information of the protection path.

According to still another aspect of the embodiments of the present invention, a bypass device is provided, including:

a detecting module, configured to detect an optical signal strength of the outbound interface of the straight path device, and monitor whether the switching indication information is received;

And a switching module, configured to switch the communication link to the protection path when the optical signal strength of the outbound interface of the straight device is lower than a preset light intensity threshold or the switching indication information is received.

According to still another aspect of the embodiments of the present invention, a communication system is provided, including:

Bypass device, straight path device, and device that triggers switching of the bypass device;

The straight path device is used to establish a communication link;

The device for triggering the bypass device switching is configured to detect real-time traffic of the direct-path device, and send a switching indication for triggering the bypass device to switch the communication link to the protection path when the straight-line device has abnormal traffic Information

The bypass device is configured to detect an optical signal strength of the outbound interface of the straight device, and monitor whether the switching indication information is received, when the optical signal strength of the outbound interface is lower than a preset light intensity threshold or received When the indication information is switched, the communication link is switched to the protection path.

The method for triggering the bypass device switching according to the embodiment of the present invention detects the real-time traffic inside the straight-channel device, and sends a switching instruction to the device when the traffic of the straight-channel device is abnormal. The bypass device, the trigger bypass device switches the communication link to the protection path, and the method for triggering the bypass device switching provided by the present invention triggers the bypass device by sending the switching indication information when the module inside the straight device fails. Switching to the protection path avoids the optical signal of the outbound interface of the straight-line device, and the interruption of the communication link caused by the failure of the module inside the straight-line device improves the reliability of the bypass device switching. The bypass device switching method provided by the present invention monitors whether the switching indication information is received while detecting the optical signal strength of the outbound interface of the straight device, and the optical signal strength of the outbound interface of the straight device is lower than a preset optical intensity threshold. Or, when the switching indication information is received, the communication link is switched to the protection path, which avoids the optical signal of the outbound interface of the straight path device, and the communication link interruption caused by the failure of the module inside the straight path device is improved. The reliability of the bypass device switching ensures the normal operation of the communication. DRAWINGS

FIG. 1 is a flowchart of a method for switching a bypass device according to an embodiment of the present invention; FIG. 2 is a flowchart of a method for switching a bypass device according to an embodiment of the present invention; A schematic structural diagram of a device for triggering a bypass device switching; FIG. 4 is a schematic structural diagram of another device for triggering a bypass device switching according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another apparatus for triggering switching of a bypass device according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of another apparatus for triggering switching of a bypass device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a bypass device according to an embodiment of the present invention; FIG. 8 is a schematic structural diagram of a communication system according to an embodiment of the present invention; FIG. 9 is a schematic diagram of another communication system according to an embodiment of the present invention. Figure. detailed description

In order to make the object, features and advantages of the present invention clearer and easier to understand, the following will be The technical solutions in the embodiments of the present invention are clearly and completely described in the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

Referring to FIG. 1, FIG. 1 is a flowchart of a method for triggering handover of a bypass device according to Embodiment 1 of the present invention. As shown in the figure, the method includes: Step S101: Detecting real-time traffic of the direct-path device; Preferably, the inbound interface traffic and the outbound interface traffic of the direct-path device and the policy packet loss traffic of the direct-path device are periodically detected; The inbound interface traffic of the direct path device may refer to the total amount of data packets flowing through the inbound interface of the straight path device during the detection period; the outgoing interface traffic may refer to flowing through the straight path device during the check period. The total number of data packets of the outbound interface; the policy packet loss traffic refers to the packet loss traffic configured by the straight path device itself for performing current traffic control. Therefore, in the embodiment of the present application, the policy packet loss traffic can be directly read. Take it. Preferably, the inbound interface traffic of the straight path device and the number of error packets counted in the internal device of the straight path device may be detected periodically. Those skilled in the art can know that when each chip in the straight path device transmits data, there is inevitably a case where the data packet is transmitted. For convenience of description, the misdirected data packet is referred to herein as a wrong packet. Specifically, the straight path is The number of error packets counted internally by the device may refer to the sum of the number of error packets counted by each chip in the straight path device. Step S102: determining whether the traffic of the straight-line device is abnormal. The method for determining whether the traffic of the straight-line device is abnormal may be: according to the inbound interface traffic and the outgoing interface traffic of the straight-channel device, and the straight-channel device The packet loss rate and the detection period of the policy are calculated, and the packet loss rate of the straight path device is calculated;

Specifically, the packet loss rate may be obtained by dividing the difference between the inbound interface traffic and the outbound interface traffic and the policy packet loss traffic, and dividing the difference with the detection period, that is, losing The packet rate can be calculated as follows:

Packet loss rate = (inbound interface traffic - outbound interface traffic - policy packet loss traffic) / detection period After the packet loss rate of the straight path device is obtained, the packet loss rate and the preset packet loss rate threshold are obtained. For comparison, when the packet loss rate is greater than the preset packet loss rate threshold, it is confirmed that the traffic of the straight path device is abnormal. Otherwise, the traffic of the straight path device is considered to be abnormal. The packet loss rate threshold value may be set according to an actual experience value. For example, when the direct path device does not configure the policy packet loss traffic, the packet loss rate threshold may be 20%. When the packet loss rate is configured, the packet loss rate threshold may be 30%, and may be set to other values according to actual requirements, which is not specifically limited herein. Certainly, the method for determining whether the traffic of the straight-line device is abnormal may be: calculating a packet error rate of the straight-line device according to a sum of the number of error packets counted internally by the straight-line device and the inbound interface traffic and the detection period. The method for calculating the error rate may include: calculating a product of the detection period and the inbound interface traffic (that is, the total amount of data packets flowing through the inbound interface during the detection period), and the error packet of the internal statistics of the straight path device. The number (that is, the sum of the number of error packets of each chip in the system) and the quotient of the product are used as the error packet rate of the straight path device, that is, the error rate can be calculated as follows:

Error packet rate = number of error packets counted internally by the straight device / (input interface traffic * detection cycle)

When the error rate threshold is exceeded, it is confirmed that the traffic of the straight-line device is abnormal. Otherwise, the traffic of the straight-line device is considered to be abnormal. The error rate threshold can be set according to the actual experience value. For example, it can be set to 5%. Otherwise, other values can be set according to actual requirements, which is not specifically limited herein. Preferably, the two methods for detecting the abnormality of the traffic of the straight-line device may exist only one type, or may exist at the same time, that is, the packet loss rate is calculated, and the packet loss rate is compared with the preset packet loss rate threshold. At the same time, the error packet rate is calculated, and the error packet rate is compared with the preset error rate threshold. When the two methods exist at the same time, if the packet loss rate is greater than the preset packet loss threshold. When the value and/or the error rate is greater than the error rate threshold, the straight-line device sends a traffic anomaly. Step S103: When a flow abnormality occurs in the straight path device, send the switching indication information for triggering the bypass device to switch the communication link to the protection path; otherwise, return to step S101.

When detecting that the traffic of the straight-line device is abnormal, sending the handover indication information to the bypass device, after receiving the handover indication information, the bypass device switches the communication link to the protection link. The road improves the reliability of bypass device switching.

Preferably, in order to further optimize the foregoing embodiment, the method further includes:

The alarm information of each module in the straight-line device is monitored, and when a module sends an alarm message, a switching instruction is sent to the bypass device to trigger the bypass device to switch to the protection path.

Specifically, the alarm information may be power supply alarm information. For example, when the power supply voltage drops, the straight road device generates power supply alarm information. At this time, the switching indication information is sent to the bypass device, and the bypass device is triggered to be switched. To the protection path; the alarm information may also be an abnormal alarm for inter-board communication. For example, when the main board and the slave board cannot communicate, that is, when the main board cannot manage the slave board, although there is still traffic from the board, the system A management abnormality alarm is issued. At this time, a switching indication may also be sent to the bypass device, and the bypass device is triggered to switch to the protection path. Of course, the alarm information is not limited to the above two types, and may be other system alarm information or system abnormal information. It should be noted that the method for triggering the bypass device switching provided by the embodiment of the present application may be implemented in a straight path device, implemented in a main control module of the straight path device, or may be operated outside the straight path device, and in a background in which the straight path device performs communication. Partially implemented, as long as it is able to obtain the outbound interface traffic of the straight-line device, such as interface traffic and system error packet information and policy packet loss traffic. According to the foregoing solution, the method for triggering the bypass device switching according to the embodiment of the present application performs real-time traffic detection on the internal system of the straight-channel device, and the internal device of the straight-channel device itself has failed, but the interface still has light, and triggers in time. The bypass device is switched to the protection path, which avoids the optical signal of the outbound interface of the straight device, and the communication link interruption caused by the failure of the module inside the straight device, improves the reliability of the bypass device switching, and the communication is normal. The possibility.

As shown in FIG. 2, FIG. 2 is a flow chart of a method for switching a bypass device according to an embodiment of the present invention. The method includes: S201: detecting an optical signal strength of an outbound interface of the straight path device, and monitoring the switching indication information;

S202: Determine whether the optical signal strength of the outbound interface of the direct device is lower than a preset light intensity threshold or whether the switching indication information is received, when the light intensity of the outgoing interface is lower than a preset light intensity threshold. Or receiving the switching indication information, step S203 is performed, otherwise returning to step S201;

S203: Switch the communication link to the protection path.

That is, the bypass device not only detects the optical interface information of the straight device itself, but also determines whether Communication link switching is required, and communication link switching is also performed by receiving handover indication information. After the bypass device is switched to the protection path, the technician repairs the straight-line device. After the straight-line device is faulty, the bypass device is manually switched back to the original communication link, and the working mode is changed to the automatic mode. The device detects the optical signal of the interface of the straight device and monitors whether the switching indication information is received.

According to the foregoing solution, the bypass device switching method provided by the embodiment of the present application can detect the optical signal strength of the outbound interface of the straight path device, and can also perform the communication link switching by receiving the communication link switching indication information, thereby avoiding The bypass device detects that the outbound interface of the straight path device has an optical signal, but cannot detect the internal fault of the straight path device, and cannot interrupt the communication link caused by the communication link switching, thereby improving the reliability of the bypass device switching. .

FIG. 3 is a schematic structural diagram of a device for triggering a bypass device switching according to an embodiment of the present invention. As shown in FIG. 3, the device includes: a detecting module 301, a determining module 302, and a triggering module 303. The detecting module 301 is configured to detect Real-time traffic of the straight-line device 305;

The determining module 302 is configured to determine, according to the real-time traffic detected by the detecting module 301, whether the traffic device 305 has abnormal traffic;

The triggering module 303 is configured to send, when the traffic of the direct path device 305 is abnormal, handover indication information for triggering the bypass device 304 to switch the communication link to the protection path. The device for triggering the switching of the bypass device can detect the real-time traffic of the direct device, and when determining that the traffic of the straight device is abnormal, send a switching instruction to the bypass device, triggering the bypass device. Switching the communication link to the protection path avoids the optical signal of the outbound interface of the straight-line device, and the interruption of the communication link caused by the failure of the module inside the straight-line device improves the reliability of the bypass device switching. FIG. 4 is a schematic structural diagram of another apparatus for triggering a bypass device switching according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes: a detecting module 301, configured to detect real-time traffic of the straight-line device 305;

Specifically, the real-time traffic of the direct-channel device 305 detected by the detecting module 301 may include: the inbound interface traffic, the outbound interface traffic, and the policy packet loss traffic. Specifically, the inbound interface traffic of the direct path device may refer to flowing through the detection period. The total amount of data packets of the straight path device entering the interface; The interface traffic may refer to the total amount of data packets flowing through the outbound interface of the straight path device during the check period; the policy packet loss traffic refers to the packet loss traffic configured by the straight path device itself for current traffic control, so In the application embodiment, the policy packet loss traffic is directly readable.

The determining module 302 is configured to determine, according to the real-time traffic detected by the detecting module 301, whether the traffic of the straight-line device 305 is abnormal. The determining module 301 can include the first calculating unit 401 and the first comparing unit 402. The unit 401 is configured to calculate a packet loss rate of the straight path device 305 according to the inbound interface traffic, the outbound interface traffic, the policy packet loss traffic, and the preset detection period of the direct path device 305. Specifically, the packet loss rate is The difference between the ingress interface traffic and the outbound interface traffic and the policy packet loss traffic may be calculated, and the difference is obtained by dividing the detection interval, that is, the packet loss rate may be calculated according to the following formula:

Packet loss rate = (inbound traffic - outbound traffic - policy packet loss traffic) / detection period. When the packet loss rate is greater than the packet loss rate threshold, it is confirmed that the straight line device 305 generates a traffic abnormality, and sends a traffic abnormality signal to the trigger module 303; otherwise, the direct path device is considered to have no traffic abnormality.

The packet loss rate threshold value may be set according to an actual experience value. For example, when the direct path device does not configure the policy packet loss traffic, the packet loss rate threshold may be 20%. When the packet loss rate is configured, the packet loss rate threshold may be 30%, and may be set to other values according to actual requirements, which is not specifically limited herein. The triggering module 303 is configured to send, after receiving the traffic abnormality signal sent by the first comparing unit 402, switching indication information for triggering the bypass device 304 to switch the communication link to the protection path. The device for triggering the bypass device switching according to the embodiment of the present invention can determine whether the real-time traffic of the straight-channel device is abnormal traffic by detecting and calculating the packet loss rate of the straight-channel device, and triggering the bypass device to transmit the communication link when an abnormality occurs. Switching to the protection path, therefore, it can avoid the optical signal of the outbound interface of the straight-line device, and the module inside the straight-line device fails to cause packet loss, thereby causing the interruption of the communication link, improving the reliability of the bypass device switching, and improving The possibility that communication will proceed normally. FIG. 5 is a schematic structural diagram of another apparatus for triggering switching of a bypass device according to an embodiment of the present invention; As shown in FIG. 5, the device includes: a detecting module 301, configured to detect real-time traffic of the straight-line device 305;

Specifically, the real-time traffic of the straight-line device 305 detected by the detecting module 301 may further include: the inbound interface traffic and the number of error packets counted internally by the straight-channel device. The determining module 302 is configured to determine, according to the real-time traffic detected by the detecting module 301, whether the traffic device 305 has abnormal traffic;

The determining module 302 may include a second calculating unit 501 and a second comparing unit 502. The second calculating unit 501 is configured to detect the inbound interface traffic, the number of error packets, and the preset according to the detecting device 301. The detection period calculates a packet error rate of the straight path device; the method for calculating the error packet rate may include: calculating a detection period and the inbound interface traffic (that is, the total amount of data packets flowing through the inbound interface during the detection period) a product, the quotient of the number of error packets counted internally by the straight path device (that is, the sum of the number of error packets of each chip in the system) and the product is used as the error packet rate of the straight path device, that is, the error packet rate may be Calculated as follows:

Error packet rate = number of error packets counted internally by the straight-line device / (inbound traffic * detection cycle).

The second comparison unit 502 is configured to compare the error rate with a preset error rate threshold, and when the error rate is greater than the error rate threshold, consider that the direct device occurs. The traffic is abnormal, and the traffic abnormality signal is sent; otherwise, the traffic of the faulty device is not abnormal. The threshold of the error rate can be set according to the actual experience value. For example, it can be set to 5%. Other values are set in actual demand, and are not specifically limited herein. After receiving the traffic abnormality signal sent by the second comparison unit 502, the triggering module 303 sends switching indication information for triggering the bypass device 304 to switch the communication link to the protection path. The device for triggering the bypass device switching according to the embodiment of the present invention can determine whether the real-time traffic of the straight-channel device is abnormal traffic by detecting and calculating the error packet rate of the straight-channel device, and triggering the bypass device to connect the communication link when an abnormality occurs. Switching to the protection path, therefore, it can avoid the optical signal of the outbound interface of the straight-line device, and the module inside the straight-line device fails to cause the wrong packet, which causes the communication link to be interrupted, improves the reliability of the bypass device switching, and improves the reliability. The possibility that communication will proceed normally. It should be noted that the foregoing determining module 302 may include the first calculating unit 401 and the second calculating unit 501, and the first comparing unit 402 corresponding to the first calculating unit 401 and the second corresponding to the second calculating unit 501. Second comparison unit 502. When the real-time traffic detected by the detection module 301 is the inbound interface traffic, the outbound interface traffic, and the policy packet loss traffic, the detected real-time traffic is sent to the first computing unit 401; when the real-time traffic detected by the detecting module 301 is the inbound interface traffic and When the number of error packets counted by the straight path device is internal, the detected real-time traffic is sent to the second calculating unit 501.

The second comparison unit 502 of the first comparison unit 402 may send the same traffic abnormality signal or may send different traffic abnormality signals, which is not specifically limited herein. Correspondingly, when the traffic module abnormality signal is received, the triggering module 303 sends the triggering bypass device, whether it is sent by the first comparing unit 402 or sent by the second comparing unit 502, as long as the traffic abnormal signal is received. 304 switches the communication link to the handover indication information of the protection path. In order to further optimize the foregoing embodiments, FIG. 6 is a schematic structural diagram of another apparatus for triggering switching of a bypass device according to an embodiment of the present invention. As shown in FIG. 6, the apparatus is based on the embodiment shown in FIG. , Also includes:

The monitoring module 601 is configured to monitor the alarm information of each module in the straight path device 305, and send a switching instruction to the bypass device 304 to trigger the bypass device 304 to switch to the protection path when the module sends the alarm information. .

On the basis of the embodiment shown in FIG. 3, the embodiment of the present invention further triggers the bypass device to switch the communication link to the protection path by monitoring the alarm information of each module in the straight path device, thereby further improving the reliability of the bypass device switching. , to ensure the normal operation of the communication. FIG. 7 is a schematic structural diagram of a bypass device according to an embodiment of the present invention. As shown in FIG. 7, the device includes: a detection module 701, configured to detect an optical signal strength of an outbound interface of a direct device, and monitor whether a handover indication is received. The switching module 702 is configured to switch the communication link to the protection path when the optical signal strength of the outbound interface of the straight device is lower than a preset light intensity threshold or the switching indication information is received. Specifically, the bypass device may be a bypass circuit, that is, the foregoing cutting may be implemented. Change the function of the circuit. Of course, it can also be another device that can implement the above switching function. The bypass device provided by the embodiment of the present invention can detect whether the switching indication information is received while detecting the optical signal strength of the outbound interface of the straight device, and the optical signal strength of the outbound interface of the straight device is lower than a preset light intensity threshold. When the value or the receiving indication information is received, the communication link is switched to the protection path, which avoids the optical signal of the outbound interface of the straight path device, and the communication link interruption caused by the failure of the module inside the straight path device improves the problem. The reliability of the bypass device switching ensures the normal operation of the communication. FIG. 8 is a schematic structural diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 8, the system includes: a straight path device 801, a bypass device 802, and a device 358 for triggering bypass device switching, where:

Straight line device 801 for establishing a communication link;

The device 803 for triggering the switching of the bypass device is configured to detect real-time traffic of the straight-line device 801, and send a switch for triggering the bypass device to switch the communication link to the protection path when the traffic of the straight-line device is abnormal. Instructing information; the bypass device 802 is configured to detect an optical signal strength of the outbound interface of the direct device, and monitor whether the switching indication information is received, where the optical signal strength of the outbound interface of the straight device is lower than a preset light intensity gate The limit value or when the handover indication information is received, the communication link is switched to the protection path. Specifically, the device 803 for triggering the bypass device switching may be disposed in the straight device 801, or may be a device independent of the straight device 801; when the device 803 that triggers the bypass device switching is set in the device In the case of the straight-line device 801, the straight-line device 801 can be used to establish a communication link, and can also detect the real-time traffic of the straight-line device 801, and send it to trigger the bypass when the flow device abnormality occurs in the straight-line device 801. The device 801 switches the communication link to the handover indication information of the protection path. Specifically, the bypass device may be a bypass circuit, that is, a circuit capable of implementing the above switching function. Of course, it can also be another device that can implement the above switching function. The implementation of the communication system provided by the embodiment of the present invention is described below by taking the trigger bypass device switching device as an example in the straight path device. As shown in FIG. 9, FIG. 9 is a structural diagram of still another communication system according to an embodiment of the present application. Under normal circumstances, the communication between device A and device B is completed by a straight-line device, that is, the communication link between device A and device B is the working path in the figure; when the outgoing interface of the straight-line device is not available When the internal module of the optical or straight-line device fails, the communication link needs to be switched to the protection path through the bypass device, so that device A and device B are directly connected without passing through the direct-path device, and the communication between device A and device B is maintained normally. . Specifically, the straight-line device triggers the switching of the bypass device by detecting the traffic of the bypass device. The process of triggering the bypass device switching may be: the straight-channel device periodically detects the inbound interface traffic, the outgoing interface traffic, and the strategy of the direct-channel device. The packet loss rate is calculated, and the packet loss rate of the straight path device is calculated according to the measured traffic value, that is, the packet loss rate = (inbound interface traffic - outbound interface traffic - policy packet loss traffic) / detection period. Then, the calculated packet loss ratio is compared with the preset packet loss threshold, and when the packet loss ratio is greater than the preset packet loss threshold, the handover indication information is sent to the bypass device. . The process of triggering the bypass device switching may also be: the straight path device periodically detects the inbound interface traffic of the straight path device and the number of error packets counted internally by the straight path device, and calculates the error of the straight path device according to the measured flow value and the number of wrong packets. Packet rate, ie: error packet rate = number of error packets in the internal device of the straight-line device / (input traffic * detection cycle), and then compare the calculated packet error rate with the preset error packet rate threshold. When the error packet rate is greater than the preset error packet rate threshold, the switching indication information is sent to the bypass device. The process of triggering the bypass device switching may also be: monitoring alarm information of each module in the straight path device, and sending a switching instruction to the bypass device to trigger the bypass device to switch to when the module sends out the alarm information Protection path. The bypass device checks the optical signal strength of the outbound interface of the straight path device, and switches the communication link to the protection path when the optical signal strength of the outbound interface is lower than the preset light intensity threshold; The road device simultaneously monitors the handover indication information sent by the straight-line device, and switches the communication link to the protection path when monitoring the reception of the handover indication information. It should be noted that, the solution provided in the embodiment of the present application is not limited to being implemented in the main control module of the straight path device, and may also be implemented in the background portion of the communication with the straight path device, as long as the outbound interface traffic of the straight path device can be obtained, It is possible to enter the interface traffic and the error packet information in the straight system. In addition, the straight path device is not limited to one physical device, and may be composed of multiple physical devices. Straight system consisting of equipment. The communication system provided by the embodiment of the present invention actively detects the real-time traffic through the direct-path device, and actively triggers the bypass device to switch when the traffic of the real-time traffic of the straight-line device is abnormal, and the bypass device switches the communication link to the protection. On the other hand, the in-line device monitors whether the internal module has alarm information, and when the internal module displays the alarm information, it actively triggers the bypass device to switch; meanwhile, the bypass device in the embodiment of the present invention monitors the outbound interface of the straight device. The optical signal strength is simultaneously monitored to receive the switching indication information. When the optical signal strength of the outbound interface of the straight path device is lower than a preset light intensity threshold and/or the monitoring receiving the switching indication information is received, the communication link is switched to The protection path further improves the reliability of the switching of the bypass device and ensures the normal operation of the communication. A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware. The program can be stored in a computer readable storage medium. The storage medium can include: Read-only memory, random access memory, disk or optical disk, etc. The embodiments of the present invention described above are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims

Rights request

A method for triggering switching of a bypass device, comprising:

Detect real-time traffic of straight-line devices;

Determining whether the straight line device has abnormal traffic;

2. The method according to claim 1, wherein the detecting real-time traffic of the straight-line device comprises:

The device detects the inbound interface traffic and the outbound interface traffic and the policy packet loss traffic of the straight path device. Correspondingly, determining whether the direct path device has abnormal traffic includes:

Calculating the packet loss rate of the straight-line device according to the inbound interface traffic, the outbound interface traffic, the policy packet loss traffic, and the preset detection period of the direct device; and determining the traffic of the straight device when the packet loss threshold is exceeded Abnormal; otherwise, the flow device is considered to have no abnormal flow.

3. The method according to claim 1, wherein the detecting real-time traffic of the straight-line device comprises:

The inbound interface traffic of the straight path device is detected periodically, and the number of error packets counted internally by the straight path device is detected;

Correspondingly, determining whether the straight line device has a traffic abnormality includes:

Calculating a packet error rate of the straight-line device according to the number of error packets that are internally calculated by the device, and the traffic and detection period of the inbound interface; and determining that the traffic of the device is abnormal when the packet rate is incorrect; It is considered that the straight line device does not have abnormal flow.

The method according to any one of claims 1-3, further comprising: monitoring alarm information of each module in the straight path device, and sending when used by the module to send the alarm information to trigger the The bypass device switches the communication link to the switching indication information of the protection path.

A bypass device switching method, comprising:

Detecting the optical signal strength of the outbound interface of the direct device, and monitoring whether the switching indication information is received. When the optical signal strength of the outbound interface of the straight device is lower than the preset light intensity threshold or the switching instruction information is received, Switch the communication link to the protection path.

6. A device for triggering switching of a bypass device, comprising:

The device according to claim 6, wherein the real-time traffic includes: inbound interface traffic, outbound interface traffic, and policy packet loss traffic;

The determining module includes:

a first calculating unit, configured to calculate, according to the inbound interface traffic, the outbound interface traffic, the policy packet loss traffic, and the preset detection period, the packet loss rate of the direct path device; the packet loss rate is greater than the When the packet loss rate threshold is exceeded, the traffic of the straight-line device is considered abnormal; otherwise, the traffic of the straight-line device is not abnormal.

The device according to claim 6, wherein the real-time traffic includes: an inbound interface traffic and a number of error packets internally calculated by the straight path device;

The determining module includes:

a second calculating unit, configured to calculate a packet error rate of the direct path device according to the inbound interface traffic, the number of error packets, and a preset detection period; when the error packet rate is greater than the error packet rate threshold, The traffic of the straight-line device is abnormal; otherwise, the traffic of the straight-line device is not abnormal.

The device according to any one of claims 6-8, further comprising: a monitoring module, configured to monitor alarm information of each module in the straight path device, and send when a module sends an alarm message Switching indication information for triggering the bypass device to switch the communication link to the protection path.

10. A bypass device, comprising:

A communication system, comprising:

A bypass device, a straight path device, and a device for triggering bypass device switching according to any of claims 6-9;

The straight path device is used to establish a communication link;