CN109039825B - Network data protection device and method - Google Patents
Network data protection device and method Download PDFInfo
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- CN109039825B CN109039825B CN201810999519.3A CN201810999519A CN109039825B CN 109039825 B CN109039825 B CN 109039825B CN 201810999519 A CN201810999519 A CN 201810999519A CN 109039825 B CN109039825 B CN 109039825B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
- H04L43/106—Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
Abstract
The invention discloses a network data protection device and a method, which are used for protecting network device data. The method provided by the invention comprises the following steps: a survival detection module: the device comprises a network interface, a network protection module and a network protection module, wherein the network interface is used for detecting whether a protected network device network is unobstructed or not, and when the protected network device network is obstructed, switching to a preset protection line; a first anomaly detection module: the protection circuit is used for regularly sending data packets with specific marks and timestamps to the protected network equipment, and switching to a protection circuit if the number of the data packets is inconsistent after receiving the returned data packets; a second anomaly detection module: the method is used for calculating the time of the delay generated by the data packet with the specific mark and the time stamp passing through the protected network equipment, and switching to a protection line when the average delay time or the longest delay time exceeds a preset threshold value. The embodiment of the invention can reduce the cost brought by hardware detection, and the multi-level network condition detection can accurately confirm the problem of network abnormality, thereby greatly ensuring the reliability of the network.
Description
Technical Field
The present invention relates to the field of network communications, and in particular, to a network data protection device and method.
Background
With the rapid development of information technology, network access devices are also gradually increased, and when a fault occurs, the network device often needs to be subjected to redundant backup to ensure the network data security. For some devices connected in series to a network, a Bypass mode is often used for protection, the redundant backup method can be adopted for key positions, but for non-key positions, the pure hardware replacement device is adopted, the smoothness of the network is guaranteed, the cost is high, the existing Bypass technology can only detect whether the protected device survives, and whether the network abnormality exists in the protected device is difficult to judge.
Therefore, it is desirable to provide a device or method for detecting network anomalies at a low cost.
Disclosure of Invention
The embodiment of the invention provides network data protection equipment and a network data protection method, which can protect network equipment data in multiple levels and reduce the cost.
In combination with the first aspect of the embodiments of the present invention, there is provided a network data protection device, including:
a survival detection module: the protection circuit is used for regularly sending heartbeat detection messages to protected network equipment to detect whether the network of the protected network equipment is unobstructed or not, and when the network of the protected network equipment is obstructed, switching to a preset protection circuit;
a first anomaly detection module: the device is used for regularly sending a data packet with a specific mark and a time stamp to the protected network equipment after the network of the protected network equipment is detected to be unobstructed, comparing whether the number of the data packet with the specific mark and the time stamp is consistent with that of the returned data packet after the data packet returned by the protected network equipment is received, and switching to the preset protection line if the number of the data packet with the specific mark and the time stamp is inconsistent with that of the returned data packet;
a second anomaly detection module: the protection circuit is used for periodically sending a data packet with a specific mark and a time stamp to the protected network equipment, calculating the delay time generated when the data packet with the specific mark and the time stamp passes through the protected network equipment after receiving the data packet returned by the protected network equipment, and switching to the preset protection circuit when the average delay time or the longest delay time returned by the data packet with the specific mark and the time stamp in unit time exceeds a preset threshold value.
In combination with the second aspect of the embodiments of the present invention, a method for protecting network data is provided, including:
regularly sending heartbeat detection messages to protected network equipment to detect whether the network of the protected network equipment is unobstructed, and switching to a preset protection line when the network of the protected network equipment is obstructed;
after the network of the protected network equipment is detected to be unobstructed, regularly sending a data packet with a specific mark and a time stamp to the protected network equipment, after receiving the data packet returned by the protected network equipment, comparing whether the number of the data packet with the specific mark and the time stamp is consistent with that of the returned data packet, and if not, switching to the preset protection line;
after the network smoothness of the protected network equipment is detected, regularly sending a data packet with a specific mark and a time stamp to the protected network equipment, after receiving the data packet returned by the protected network equipment, calculating the delay time generated when the data packet with the specific mark and the time stamp passes through the protected network equipment, and when the average delay time or the maximum delay time returned by the data packet with the specific mark and the time stamp in unit time exceeds a preset threshold value, switching to the preset protection line.
In the embodiment of the invention, the data safety of the protected network equipment is protected by respectively detecting whether the protected network equipment is smooth and whether the protected network equipment is abnormal, the multi-level judgment can not only accurately confirm the network fault and greatly improve the reliability of the network, but also detect and forward the data packet based on the software layer, thereby greatly reducing the cost caused by detecting the network problem through hardware.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a network data protection device according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a network data protection method according to an embodiment of the present invention;
Detailed Description
The embodiment of the invention provides network data protection equipment and a method, which are used for protecting the network reliability of non-critical network equipment deployed in an inline mode.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, a schematic structural diagram of a network data protection device according to an embodiment of the present invention includes the following components:
the survival detection module 110: the protection circuit is used for regularly sending heartbeat detection messages to protected network equipment to detect whether the network of the protected network equipment is unobstructed or not, and when the network of the protected network equipment is obstructed, switching to a preset protection circuit;
the protected network device may generally be a non-gateway type device such as a network data analysis device. The heartbeat detection packet may generally be an ICMP packet (Internet Control Message Protocol, which is used to transmit Control messages between an IP machine and a router), a TCP (Transmission Control Protocol) packet, a UDP (User Datagram Protocol), or some other special data packet. Taking the ICMP packet as an example, by sending the ICMP-request packet and receiving an ICMP-echo (ICMP answer), that is, a common ping command, it is possible to detect whether the network is clear.
The above-mentioned passing data packet detection, namely through adding special marks such as time stamp for the said data packet, judge whether the said protected network equipment network is unobstructed according to the receiving situation.
The preset protection circuit is a specific network channel, and network data can be transmitted or forwarded through the protection circuit, so that network data loss caused by a protected network fault is avoided. The data packet can be independently forwarded and the network data can be transmitted by protecting the line from the fault of the equipment.
The first anomaly detection module 120: the device is used for regularly sending a data packet with a specific mark and a time stamp to the protected network equipment after the network of the protected network equipment is detected to be unobstructed, comparing whether the number of the data packet with the specific mark and the time stamp is consistent with that of the returned data packet after the data packet returned by the protected network equipment is received, and switching to the preset protection line if the number of the data packet with the specific mark and the time stamp is inconsistent with that of the returned data packet;
after the network of the protected network equipment is detected to be unobstructed, whether the network of the protected network equipment is abnormal or not needs to be retrieved, and whether the number of the data packets is changed or not is compared according to the number of the returned data packets by sending the marked data packets, so that whether the data packets are lost or not in the protected network equipment is judged.
And when the number of the marked data packets is compared and the data packet loss is confirmed, switching to the protection circuit, and forwarding the data packets flowing through the protected network equipment out through the protection circuit until the fault of the protected network equipment is eliminated.
The second anomaly detection module 130: the protection circuit is used for periodically sending a data packet with a specific mark and a time stamp to the protected network equipment, calculating the delay time generated when the data packet with the specific mark and the time stamp passes through the protected network equipment after receiving the data packet returned by the protected network equipment, and switching to the preset protection circuit when the average delay time or the longest delay time returned by the data packet with the specific mark and the time stamp in unit time exceeds a preset threshold value.
The network delay time can be determined according to the time stamp in the data packet, and because the network delay can influence the normal use of the network, the network flow with delay is forwarded through the protection line, so that the normal transmission of network data caused by the problem of protected network equipment can be avoided.
The network delay should take the influence of the network bandwidth into consideration as much as possible, and when setting the threshold value of the delay, the average delay time should be different from the threshold value of the maximum delay time.
Optionally, the network data protection device includes:
and when the network data protection equipment has a preset fault, forwarding the data packet flowing through the network data protection equipment through the preset protection line. The predetermined fault may generally be a power failure or a hardware fault that causes the network data protection device to fail to protect the network device, such as a condition of critical hardware damage.
The network data protection equipment fails to realize automatic forwarding, and is realized through a network card with a bypass function. Specifically, an automatic switch exists in the network card, and when a fault occurs, the protection circuit is automatically and physically connected. After the network data protection equipment is powered on, a counter in the network card is triggered (1 is automatically added every second), the counter is cleared regularly after the network data protection equipment software works normally, when the network data protection equipment fails, the clear operation cannot be executed, the counter reaches a threshold value, and the physical connection is connected with a protection circuit.
Optionally, the network data protection device further includes:
and when the data packet processing software of the network data protection equipment fails, forwarding the data packet flowing through the network data protection equipment through the preset protection line. The data packet processing software is used for processing network data packets, and comprises receiving, forwarding, managing data packets and managing hardware, wherein when the software fails, the software cannot process the passing data packets through the network data protection equipment at present.
In the network data protection device, the data packet processing software can perform bypass on a software level, multiple connections of network links are realized by using multiple groups of hardware cards, and when the data packet processing software fails to process a data packet, the mutually independent hardware cards can be connected through software control or hardware setting.
Preferably, the protection line may be one or more preset lines, and in the embodiment of the present invention, the protection line may be the same line or different lines.
Optionally, when it is monitored that the protected network device is recovered to normal, switching to forwarding the network data packet through the protected network device. When the protected network device fails, the data stream is switched to a preset protection line. When the protected network equipment is detected to be recovered to operate, the data packets with the specific marks and the time stamps are sent to the protected network equipment again, if the number of the data packets is detected to be correct and the average delay time is within a threshold value, the network state of the protected network equipment is in a healthy state, and the data are automatically cut back to the protected network equipment.
The network protection equipment can accurately determine the network condition of the protected network equipment, guarantees the network safety through a protection circuit, can also transmit network data aiming at self software and hardware faults, guarantees the smoothness of the network, and meanwhile, detects the network condition of the protected network equipment based on software, greatly guarantees the reliability of the network while reducing the cost for processing the network fault in multiple layers.
In the embodiment of the invention, the health state of the data link is detected from three layers of smoothness, packet loss rate and delay of the network, and the link is switched once the network state is found to be lower than a set threshold value, so that the transmission stability of the data link is greatly ensured.
Example two:
the above mainly describes a network data protection device, and the following describes a device of a network data protection method in detail.
Fig. 2 is a schematic structural diagram illustrating a network data protection method according to an embodiment of the present invention.
S201, sending heartbeat detection messages to protected network equipment regularly to detect whether a network of the protected network equipment is unobstructed, and switching to a preset protection line when the network of the protected network equipment is obstructed;
s202, after the network of the protected network equipment is detected to be unobstructed, regularly sending a data packet with a specific mark and a time stamp to the protected network equipment, after receiving the data packet returned by the protected network equipment, comparing whether the number of the data packet with the specific mark and the time stamp is consistent with that of the returned data packet, and if not, switching to the preset protection line;
s203, after the network of the protected network device is detected to be unobstructed, regularly sending a data packet with a specific mark and a time stamp to the protected network device, after receiving the data packet returned by the protected network device, calculating the delay time generated when the data packet with the specific mark and the time stamp passes through the protected network device, and when the average delay time or the longest delay time returned by the data packet with the specific mark and the time stamp in unit time exceeds a preset threshold value, switching to the preset protection line.
Optionally, when it is monitored that the protected network device is recovered to normal, switching to forwarding the network data packet through the protected network device. When the protected network device fails, the data stream is switched to a preset protection line. When the protected network equipment is detected to be recovered to operate, the data packets with the specific marks and the time stamps are sent to the protected network equipment again, if the number of the data packets is detected to be correct and the average delay time is within a threshold value, the network state of the protected network equipment is in a healthy state, and the data are automatically cut back to the protected network equipment.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art would appreciate that the modules, elements, and/or method steps of the various embodiments described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A network data protection device, comprising:
a survival detection module: the protection circuit is used for regularly sending heartbeat detection messages to protected network equipment to detect whether the network of the protected network equipment is unobstructed or not, and when the network of the protected network equipment is obstructed, switching to a preset protection circuit;
the heartbeat detection message is an ICMP packet, a TCP packet or a UDP packet;
the preset protection circuit is a specific network channel, and network data can be transmitted or forwarded through the protection circuit;
a first anomaly detection module: the device is used for regularly sending a data packet with a specific mark and a time stamp to the protected network equipment after the network of the protected network equipment is detected to be unobstructed, comparing whether the number of the data packet with the specific mark and the time stamp is consistent with that of the returned data packet after the data packet returned by the protected network equipment is received, and switching to the preset protection line if the number of the data packet with the specific mark and the time stamp is inconsistent with that of the returned data packet;
a second anomaly detection module: the protection circuit is used for periodically sending a data packet with a specific mark and a time stamp to the protected network equipment, calculating the delay time generated when the data packet with the specific mark and the time stamp passes through the protected network equipment after receiving the data packet returned by the protected network equipment, and switching to the preset protection circuit when the average delay time or the longest delay time returned by the data packet with the specific mark and the time stamp in unit time exceeds a preset threshold value;
when the data packet processing software of the network data protection equipment fails, forwarding the data packet flowing through the protected network equipment through the preset protection circuit;
the data packet processing software can perform bypass on a software level, multiple connections of network links are realized by using multiple groups of hardware cards, and when the data packet processing software fails to process a data packet, the hardware cards which are independent of each other can be connected through software control or hardware setting.
2. The apparatus of claim 1, wherein the network data protection apparatus further comprises:
and when the network data protection equipment has a preset fault, forwarding the data packet flowing through the protected network equipment through the preset protection line.
3. The apparatus of claim 1, wherein the network data protection apparatus further comprises: and when the protected network equipment is monitored to be recovered to normal, switching to forwarding the network data packet through the protected network equipment.
4. A method for protecting network data, comprising:
regularly sending heartbeat detection messages to protected network equipment to detect whether the network of the protected network equipment is unobstructed, and switching to a preset protection line when the network of the protected network equipment is obstructed;
the heartbeat detection message is an ICMP packet, a TCP packet or a UDP packet;
the preset protection circuit is a specific network channel, and network data can be transmitted or forwarded through the protection circuit;
after the network of the protected network equipment is detected to be unobstructed, regularly sending a data packet with a specific mark and a time stamp to the protected network equipment, after receiving the data packet returned by the protected network equipment, comparing whether the number of the data packet with the specific mark and the time stamp is consistent with that of the returned data packet, and if not, switching to the preset protection line;
after the network of the protected network equipment is detected to be unobstructed, regularly sending a data packet with a specific mark and a time stamp to the protected network equipment, after receiving the data packet returned by the protected network equipment, calculating the delay time generated when the data packet with the specific mark and the time stamp passes through the protected network equipment, and when the average delay time or the longest delay time returned by the data packet with the specific mark and the time stamp in unit time exceeds a preset threshold value, switching to the preset protection line;
when the data packet processing software of the network data protection equipment fails, forwarding the data packet flowing through the protected network equipment through the preset protection circuit;
the data packet processing software can perform bypass on a software level, multiple connections of network links are realized by using multiple groups of hardware cards, and when the data packet processing software fails to process a data packet, the hardware cards which are independent of each other can be connected through software control or hardware setting.
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| CN111245666B (en) * | 2018-11-29 | 2022-12-06 | 华为技术有限公司 | Data transmission method, device and system |
| CN110445717B (en) * | 2019-07-17 | 2022-04-08 | 新华三技术有限公司成都分公司 | Data forwarding method, user access equipment and switch |
| CN110943864B (en) * | 2019-11-29 | 2023-04-07 | 北京金山云网络技术有限公司 | Network anomaly positioning method and device of distributed storage system |
| CN113242158B (en) * | 2021-05-10 | 2022-11-29 | 上海华讯网络系统有限公司 | Real-time monitoring method and system based on switch hardware timestamp |
| CN113691306B (en) * | 2021-07-08 | 2022-09-23 | 曙光网络科技有限公司 | Method, system and storage medium for protecting optical fiber circuit |
| CN116150221B (en) * | 2022-10-09 | 2023-07-14 | 浙江博观瑞思科技有限公司 | Information interaction method and system for service of enterprise E-business operation management |
| CN115494721B (en) * | 2022-11-15 | 2023-03-17 | 长安新能源南京研究院有限公司 | Redundancy control method and device of controller, controller and system |
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| CN101304346B (en) * | 2008-06-27 | 2010-12-15 | 北京星网锐捷网络技术有限公司 | Method and apparatus for monitoring link |
| CN103209099B (en) * | 2013-05-03 | 2016-06-29 | 广州市成格信息技术有限公司 | A kind of automatic switching protection method of internodal network communication circuit |
| CN105101438A (en) * | 2015-07-10 | 2015-11-25 | 努比亚技术有限公司 | Data allocation method and device for multiple data channels |
| CN105099825B (en) * | 2015-08-17 | 2018-10-02 | 北京神州绿盟信息安全科技股份有限公司 | A kind of safeguard method and device of external Bypass |
| CN106941686A (en) * | 2016-01-05 | 2017-07-11 | 中国移动通信集团山东有限公司 | A kind of path method of adjustment, OSS webmasters and PTN webmasters |
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