KR20100131107A - Method and system for detecting fault of network device - Google Patents

Method and system for detecting fault of network device Download PDF

Info

Publication number
KR20100131107A
KR20100131107A KR1020090049827A KR20090049827A KR20100131107A KR 20100131107 A KR20100131107 A KR 20100131107A KR 1020090049827 A KR1020090049827 A KR 1020090049827A KR 20090049827 A KR20090049827 A KR 20090049827A KR 20100131107 A KR20100131107 A KR 20100131107A
Authority
KR
South Korea
Prior art keywords
failure
network
received
network equipment
ping signal
Prior art date
Application number
KR1020090049827A
Other languages
Korean (ko)
Inventor
금기섭
이경호
황복규
Original Assignee
주식회사 케이티
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케이티 filed Critical 주식회사 케이티
Priority to KR1020090049827A priority Critical patent/KR20100131107A/en
Publication of KR20100131107A publication Critical patent/KR20100131107A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/02—Standardisation; Integration
    • H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0695—Management of faults, events, alarms or notifications the faulty arrangement being the maintenance, administration or management system
    • 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

Abstract

PURPOSE: A method and a system for detecting faults of a network device are provided to accurately detect an error of a network device. CONSTITUTION: In case an answer signal for a transmitted ping signal is not received, a second error detection part(300) requests operation state information according to SNMP in one or more network devices. According to the received operation state information result, the second error detection part determines the error of the network device which does not receive the answer signal for the transmitted ping signal. More than one network device is connected to the network device for detecting an error.

Description

Method and system for detecting fault of network device

The present invention relates to a failure detection method and system for network equipment. More specifically, using a ping and Simple Network Management Protocol (SNMP), fault detection of a network device capable of accurately detecting a failure of a desired network device among a plurality of network devices connected to the network. It relates to a method and a system.

In general, a method using a ping or simple network management protocol (SNMP) is mainly used to determine a failure of a plurality of network devices connected to a network.

Here, ping is an application program using the Internet Control Message Protocol (ICMP), which uses ping to determine the failure of a plurality of network devices when pinging from the source that performed the ping. Check the reachability of the IP packet to the destination entered as a parameter and use the method.

A simple network management protocol is a type of protocol used in a network. When a simple network management protocol is used to determine the failure of a plurality of network devices, the simple network management protocol is installed in the network devices to which the simple network management protocol is applied. Through the periodic communication between the SNMP-Agent and the SNMP-Manager installed in the equipment controlling the network devices, the operation status of the network equipment is managed as a result of the communication in the simplified network management protocol manager. Use the method of judgment.

1 is a reference diagram of a network equipment failure detection system using ping.

As shown in FIG. 1, the failure detection unit 2 of the network equipment failure detection system 1 periodically checks the network device 3a or the interface 4a included in the network equipment 3a, which is preset for failure detection. The network equipment 3a or the interface 4a which does not perform a ping and does not respond is determined to be faulty.

In this case, the shorter the period for performing the ping in the failure detection unit 2 is possible to quickly detect the failure of the network equipment (3a) to detect the failure, the shorter the period for performing the ping is connected to the network A problem arises in that the degree of load applied to the fault detection unit 2 and the network equipment 3a is increased.

Therefore, in order to solve the above problems, the ping cycle is generally performed for several seconds to several minutes, but in this case, the reliability of the determination of the failure of the network equipment occurs.

For example, even when the network equipment 3a of FIG. 1 is operating normally, a problem in the path of the ping reaching the network equipment 3a to determine whether the failure is performed by the failure detecting unit 2 that performs the ping. Therefore, there may be a case in which there is no response to the ping performed by the failure detection unit 2 or a response time is late.

2 is a reference diagram of a network equipment failure detection system using a simple network management protocol.

As shown in FIG. 2, the failure detection unit 20 of the network failure detection system 10 includes a simple network management protocol manager 22 and the network equipment 30a includes a simple network management protocol agent 32a.

The simple network management protocol agent 32a determines the operation state of the interfaces 34a and 36a included in the network equipment 30a as an operation UP or down, and the simple network management protocol manager 22. May periodically communicate with the simple network management protocol agent 32a to detect whether the network equipment 30a has failed.

In the case of the above method, the network equipment 30a determines the operating state of the network equipment 30a in the network equipment 30a itself in comparison with the network equipment failure detection system 1 using ping and then the network equipment 30a in the failure detection unit 20. Since the operation information of the network equipment failure detection system using the ping can be distinguished from the simple non-response caused by external factors such as path problems that can occur in the network device (30a) d interface 34a, 36a) has the advantage of detecting the failure.

However, even in the case of the above method, when the network equipment 30a itself fails, the simple network management protocol agent 32a mounted on the network equipment 30a also does not operate, so the simple network management protocol manager 22 detects this. There was a problem that there was no way to do it.

The present invention has been made to solve the above problems and accurately pinpoints the failure of a desired network device among a plurality of network devices connected to a network using a ping and a simple network management protocol (SNMP). It is an object of the present invention to provide a method and system for detecting a failure of network equipment that can be detected.

According to an aspect of the present invention, there is provided a method for detecting a failure of a network device, the method including: (a) transmitting a ping signal to a network device to detect the presence of a failure among a plurality of network devices connected to a network; (b) If a response signal according to the transmitted ping signal is not received, at least one network device connected to a network device to detect the presence or absence of a failure according to Simple Network Management Protocol (SNMP). Requesting operation state information; And (c) determining whether there is a failure of the network equipment for which the response signal according to the transmitted ping signal is not received according to the reception result of the requested operation state information.

In addition, the failure detection system of the network equipment according to the present invention includes a first failure detection unit for transmitting a ping signal to the network equipment to detect the presence of a plurality of network equipment connected to the network; And an operation state according to a simple network management protocol (SNMP) to at least one network device connected to a network device to detect the presence of a failure when a response signal according to the transmitted ping signal is not received. And a second failure detection unit for requesting information and determining whether the network equipment for which the response signal according to the transmitted ping signal has not been received according to the result of receiving the requested operation state information.

According to the present invention, in detecting network device failures connected to the network, network devices are detected by using both a method using a ping signal having a high probability of detection and a method using a simple network management protocol having high reliability. It is possible to increase the probability of fault detection and the reliability of fault detection.

In addition, the network manager detects the failure of the network equipment connected to the network quickly and accurately has the effect that can be quickly responded to the failure of the network equipment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it is to be noted that the components of each drawing have the same reference numerals as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, preferred embodiments of the present invention will be described below, but the technical idea of the present invention may be implemented by those skilled in the art without being limited or limited thereto.

3 is a reference diagram of a network equipment failure detection system according to a preferred embodiment of the present invention.

As shown in FIG. 3, the network equipment failure detecting system 100 according to an exemplary embodiment of the present invention includes a first failure detecting unit 200 and a second failure detecting unit 300.

The first failure detection unit 200 transmits a ping signal to a network device to detect the presence of a failure among the plurality of network devices 400a, 400b, and 400c connected to the network.

At this time, the first failure detection unit 200 transmits the ping signal generator 210 that generates the ping signal, the ping signal generated by the ping signal generator 210 to the network equipment to detect the presence of the failure or The ping signal transceiver 220 which receives the response signal according to the transmitted ping signal, and the network equipment to detect the presence or absence of the failure according to the reception result of the response signal are determined to operate normally or are determined to have a failure. It includes a first determination unit 230 for operating the second failure detection unit 300.

The second failure detection unit 300 is a simple network management protocol (simple network management protocol) to at least one or more network equipment connected to the network equipment that has not received a response signal according to the ping signal transmitted from the first failure detection unit 200. Requesting operation status information according to Management Protocol (SNMP) and determining whether there is a failure of network equipment for which a response signal according to the ping signal transmitted from the first failure detection unit 200 is not received according to the reception result of the requested operation status information. To judge.

At this time, the second failure detection unit 300 is connected to at least one network device that is connected to the network equipment that has not received a response signal according to the ping signal transmitted from the first failure detection unit 200 according to the simple network management protocol. Simple network management protocol manager 310 requesting the operation state information and the network equipment for which the response signal according to the ping signal transmitted from the first failure detection unit 200 is not received according to whether the operation state information is received or not is normal. It includes a second determination unit 320 to determine that the operation or that there is a failure.

In addition, the operation state information may include operation of a plurality of interfaces included in each of at least one network device connected to a network device for which a response signal according to the ping signal transmitted from the first failure detection unit 200 has not been received, or It may be non-operational information.

Referring to the operation of the failure detection system 100 of the network equipment according to an embodiment of the present invention as shown in FIG.

The ping signal is transmitted from the ping signal transmission / reception unit 220 of the first failure detection unit 200 to the network device 400a to detect whether there is a failure.

At this time, when the response signal according to the transmitted ping signal is received from the network equipment 400a to the ping signal transceiver 220, the first determination unit 230 determines that the network equipment 400a operates normally. If the response signal according to the transmitted ping signal is not received by the ping signal transmission / reception unit 220, the first determination unit 230 determines that the network equipment 400a has a failure to operate the second failure detection unit 300. Can be.

The criterion for determining whether to receive a response signal according to the transmitted ping signal may be a case where a response signal according to the transmitted ping signal is not received during a predetermined reference time. The reference time can be several seconds to several minutes.

Next, the second failure detection unit 300 is an operation state according to the simple network management protocol to the network equipment (400b, 400c) connected to the network equipment (400a) that has not received a response signal according to the transmitted ping signal Request information.

In this case, the request for the operation state information may be made by the simple network management protocol manager 310, and the operation state information may be simplified from the simple network management protocol agents 410b and 410c included in the network equipment 400b and 400c. It may be transmitted to the network management protocol manager 310.

In addition, the operation state information may be operation or non-operation information of the interface (420b, 430b, 420c, 430c) included in each of the network equipment (400b, 400c).

In addition, the simple network management protocol manager 310 stores in advance a list of a plurality of interfaces 420a, 420b, 420c, 430a, 430b, and 430c which are included in the network equipment 400a, 400b, and 400c connected to the network. The simple network management protocol manager 310 selects an arbitrary interface from the pre-stored interface list and requests operation state information according to the simple network management protocol for the selected arbitrary interface, and then the operating state. You can check the reception of information.

And selecting an interface for which the operation state information is not requested from the pre-stored interface list and then requesting operation state information for the interface for which the selected operation state information is not requested. The abnormality of the plurality of interfaces 420b, 420c, 430b, and 430c included in the network devices 400b and 400c connected to the network device 400a in which no signal is received may be checked.

The second determination unit 320 includes network equipment 400b and 400c connected to the network equipment 400a in which the response signal according to the transmitted ping signal is not received in the simple network management protocol manager 310. When operation information on at least one of the plurality of interfaces 420b, 430b, 420c, and 430c is received, the network equipment 400a in which the response signal according to the transmitted ping signal is not received operates normally. You can judge.

In addition, the second determiner 320 may receive non-operational information for all of the interfaces 420b, 430b, 420c, and 430c included in each of the network equipment 400b and 400c, or may not receive the operation state information. In this case, it may be determined that a failure occurs in the network equipment 400a in which the response signal according to the transmitted ping signal is not received.

As such, the second determination unit 320 may not receive the non-operation information or the operation state information for all of the interfaces 420b, 430b, 420c, and 430c included in each of the network equipment 400b and 400c. If not, the reason for the failure of the network device 400a in which the response signal according to the transmitted ping signal is not received is that a plurality of interfaces including each of the network devices connected to the normally operating network device fail simultaneously. This is because nothing happens.

In addition, the second determination unit 320 may determine that the plurality of interfaces (420b, 420c, 430b, 430c) at the same time the failure occurs in consideration of the previously input determination reference time, wherein the determination reference time Simple network management protocol agents 410b and 410c determine the time at which a failure occurs in the plurality of interfaces 420b, 420c, 430b, and 430c and a failure state of the plurality of interfaces 420b, 420c, 430b and 430c. The time taken into consideration of the time to be transmitted to the network protocol manager 310 and the like may be input to the second determiner 320 in the form of a parameter.

In addition, as another method of determining that a failure has occurred in the network equipment 400a in which the second determination unit 320 does not receive a response signal according to the transmitted ping signal, the simple network management protocol manager 310 transmits the ping. By requesting the operation status information for any two of the interfaces (420b, 430b, 420c, 430c) of the network equipment (400b, 400c) connected to the network equipment (400a) that has not received a response signal according to the signal If non-operational information for both of the two interfaces is received or the operation state information is not received, a method of determining that a failure has occurred in the network equipment 400a in which a response signal according to the transmitted ping signal is not received. Can be.

As such, for any two of the interfaces 420b, 430b, 420c, 430c of the network equipment 400b, 400c that are connected to the network equipment 400a in which the response signal according to the transmitted ping signal is not received. When non-operation information is received or the operation state information is not received, the reason for determining that a failure occurs in the network device 400a in which the response signal according to the transmitted ping signal is not received is connected to a normally operating network device. This is because no two or more failures occur simultaneously among a plurality of interfaces included in each network device.

Therefore, when the number of interfaces included in each of the plurality of network devices connected to the network is large, it is possible to determine whether or not the network device to detect the failure more quickly by using the above method.

The failure detection system 100 of the network equipment of the present invention transmits a ping signal to the network equipment to detect whether there is a failure, and when the response signal according to the transmitted ping signal is not received, the network equipment for which the response signal is not received. Requesting operation state information according to a simple network management protocol from at least one network device connected to the network device, and determining whether a network device that has not received a response signal according to the transmitted ping signal is received from the reception result of the operation state information; do.

Therefore, it is possible to improve the probability of fault detection and fault detection by using both the method using the ping signal with high detection probability and the method using the simple network management protocol with high reliability in detecting the failure of the network equipment connected to the network. Has an effect.

In addition, the network administrator can quickly and accurately detect the failure of the network equipment connected to the network has the effect that can be quickly responded to the failure of the network equipment.

4 is a flowchart of a network equipment failure detection method according to a preferred embodiment of the present invention.

As shown in FIG. 4, the network equipment failure detecting method according to the preferred embodiment of the present invention includes the following steps performed in time series in the network equipment failure detecting system 100 according to the preferred embodiment of the present invention. Even if omitted, the above description of the network equipment failure detecting system is applied to the network equipment failure detecting method according to the present embodiment.

In S100, the first failure detecting unit 200 transmits a ping signal to a network device to detect the presence of a failure among a plurality of network devices connected to the network.

In this case, the ping signal may be generated by the ping signal generator 210, and the generated ping signal may detect the presence of a failure among a plurality of network equipment connected to the network through the ping signal transceiver 220. May be sent to the network equipment 400a.

In operation S200, the first failure detection unit 200 checks whether a response signal according to the transmitted ping signal is received and determines that the network equipment 400a operates normally when the response signal according to the transmitted ping signal is received. Termination is made.

In this case, whether to receive the response signal according to the transmitted ping signal may be confirmed by the first determination unit 230, and the criterion for determining whether the received ping signal is determined is determined in response to the transmitted ping signal during a predetermined reference time. The response signal may not be received, and the predetermined reference time may be several seconds to several minutes.

And when the response signal according to the transmitted ping signal is not received in step S300 the second failure detection unit 300 is at least one or more network equipment connected to the network equipment that has not received the response signal according to the transmitted ping signal Requests operation state information according to Simple Network Management Protocol (SNMP) from 400b and 400c.

In this case, when the response signal according to the transmitted ping signal is not received, the operation of the second failure detection unit 300 causes the first determination unit 230 to not receive the response signal according to the transmitted ping signal. After determining that the failure has occurred, 400a may operate the second failure detection unit 300.

In addition, the operation state information includes a plurality of interfaces (420b, 420c, 430b) each of at least one network device (400b, 400c) connected to the network equipment that has not received a response signal according to the transmitted ping signal Or 430c).

In addition, the request for the operation state information may be made by the simple network management protocol manager 310, and the operation state information is connected to the network equipment 400a in which a response signal according to the transmitted ping signal is not received. It may be transmitted to the simple network management protocol manager 310 from the simple network management protocol agents 410b and 410c included in each of the network equipment 400b and 400c.

In addition, the simple network management protocol manager 310 stores in advance a list of a plurality of interfaces 420a, 420b, 420c, 430a, 430b, and 430c which are included in the network equipment 400a, 400b, and 400c connected to the network. The simple network management protocol manager 310 selects an arbitrary interface from the pre-stored interface list and requests operation state information according to the simple network management protocol for the selected arbitrary interface, and then the operating state. You can check the reception of information.

And selecting an interface for which the operation state information is not requested from the pre-stored interface list and then requesting operation state information for the interface for which the selected operation state information is not requested. The abnormality of the plurality of interfaces 420b, 420c, 430b, and 430c included in the network devices 400b and 400c connected to the network device 400a in which no signal is received may be checked.

In operation S400, the second failure detecting unit 300 checks whether the requested operation state information is received, and is connected to the network equipment 400a and 400c that have not received a response signal according to the transmitted ping signal. ) When the operation information on at least one of the plurality of interfaces 420b, 420c, 430b, and 430c included in each of the plurality of interfaces is received, the network device 400a that has not received a response signal according to the transmitted ping signal The operation is terminated by determining that it is operating normally.

In addition, all of the plurality of interfaces 420b, 420c, 430b, and 430c included in each of the network devices 400b and 400c connected to the network equipment 400a in which the response signal according to the transmitted ping signal is not received. When the non-operational information is received or the operation state information is not received, the second failure detection unit 300 determines that the network equipment 400a that has not received a response signal according to the transmitted ping signal in S500 is disabled. After that is done.

As such, the second determination unit 320 may not receive the non-operation information or the operation state information for all of the interfaces 420b, 430b, 420c, and 430c included in each of the network equipment 400b and 400c. If not, the reason for the failure of the network device 400a in which the response signal according to the transmitted ping signal is not received is that a plurality of interfaces including each of the network devices connected to the normally operating network device fail simultaneously. This is because nothing happens.

In addition, the second determination unit 320 may determine that the plurality of interfaces (420b, 420c, 430b, 430c) at the same time the failure occurs in consideration of the previously input determination reference time, wherein the determination reference time The simple network management protocol agent 410b or 410c determines a time at which a failure occurs in the plurality of interfaces 420b, 420c, 430b and 430c and a failure state of the plurality of interfaces 420b, 420c, 430b and 430c. The time taken into consideration of the time to be transmitted to the simple network protocol manager 310 may be input to the second determiner 320 in the form of a parameter.

According to an exemplary embodiment of the present invention, a failure detection method of a network device transmits a ping signal to a network device to detect whether a failure occurs, and if a response signal according to the transmitted ping signal is not received, according to the transmitted ping signal. Requesting operation status information according to a simple network management protocol to at least one network device connected to a network device for which a response signal has not been received so that a response signal according to the transmitted ping signal is not received from the reception result of the operation status information. Final determination of network equipment failure.

Therefore, it is possible to improve the probability of fault detection and fault detection by using both the method using the ping signal with high detection probability and the method using the simple network management protocol with high reliability in detecting the failure of the network equipment connected to the network. Has an effect.

In addition, the network administrator can quickly and accurately detect the failure of the network equipment connected to the network, it is possible to respond quickly in the event of a failure of the network equipment.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. This will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

According to the present invention, both failure detection probability and failure detection reliability can be improved by utilizing both a method using a ping signal with high probability of detection and a method using a simple network management protocol with high reliability for fault detection of network devices connected to a network. Since it can be increased, it can be used instead of the conventional network equipment failure detection system.

1 is a reference diagram of a network equipment failure detection system using ping;

2 is a reference diagram of a network equipment failure detection system using a simple network management protocol;

3 is a reference diagram of a network equipment failure detection system according to a preferred embodiment of the present invention, and

4 is a flow chart of a network equipment failure detection method according to a preferred embodiment of the present invention.

<Brief description of the main parts of the drawings>

(1): Network equipment failure detection system using ping

(2,20): failure detection unit (3a, 3b, 3c, 30a, 30b, 30c): network equipment

(4a, 5a, 34a, 36a): interface

(10): Network equipment failure detection system using simple network management protocol

22. Simple Network Management Protocol Manager

32a: Simple Network Management Protocol Agent

100: network equipment failure detection system

200: first failure detection unit 210: ping signal generation unit

220: ping signal transceiver 230: first determiner

300: second failure detection unit 310: simplified network management protocol manager

(320): second determination unit (400a, 400b, 400c): network equipment

(410a, 410b, 410c): Simple Network Management Protocol Agent

(420a, 430a, 420b, 430b, 420c, 430c): Interface

Claims (12)

(a) transmitting a ping signal to a network device to detect the presence of a failure among a plurality of network devices connected to the network; (b) If a response signal according to the transmitted ping signal is not received, at least one network device connected to a network device to detect the presence or absence of a failure according to Simple Network Management Protocol (SNMP). Requesting operation state information; And (c) determining whether there is a failure of the network equipment for which a response signal according to the transmitted ping signal is not received according to a result of receiving the requested operation state information. The method of claim 1, In the step (b), the operation state information is operation or non-operation information of a plurality of interfaces included in each of at least one network device connected to a network device for which a response signal according to the transmitted ping signal is not received. Failure detection method of the network equipment, characterized in that. 3. The method of claim 2, In operation (c), determining that the network device, in which the response signal according to the transmitted ping signal is not received, is not an error is performed on at least one or more of the plurality of interfaces included in each of the at least one network device. Method for detecting a failure of a network device, characterized in that the information is received. 3. The method of claim 2, In step (c), it is determined that the network equipment for which the response signal according to the transmitted ping signal is not received is failure information on all of a plurality of interfaces included in each of the at least one or more network equipment. Or when the operation state information is not received. 3. The method of claim 2, In step (c), determining that the network equipment for which the response signal according to the transmitted ping signal is not received is a failure rate for two interfaces arbitrarily selected from among a plurality of interfaces included in each of the at least one network equipment. Method for detecting a failure of the network equipment, characterized in that the operation information is received or the operation state information is not received. A first failure detection unit for transmitting a ping signal to a network device to detect the presence of a failure among a plurality of network devices connected to a network; And Operation status information according to Simple Network Management Protocol (SNMP) to at least one network device connected to a network device to detect the presence of a failure when the response signal according to the transmitted ping signal is not received. And a second failure detection unit for determining whether or not a failure of the network equipment that has not received a response signal according to the transmitted ping signal according to the reception result of the requested operation state information. Detection system The method of claim 6, The first failure detector includes a ping signal generator for generating a ping signal, a ping signal transceiver for transmitting the generated ping signal to a network device to detect the presence of a failure, and receiving a response signal according to the transmitted ping signal. And a first determiner configured to operate the second failure detector by determining that the network equipment to detect the failure is normally operating or determining that there is a failure according to the reception of the response signal. Fault detection system of network equipment. The method of claim 6, The second failure detection unit is a simple network management protocol manager for requesting at least one network device connected to a network device that has not received a response signal according to the transmitted ping signal according to a simple network management protocol; And a second determining unit determining that the network equipment, which has not received the response signal according to the transmitted ping signal, according to the presence or absence of operation state information, is operating normally or is determined to have a failure. Detection system. The method of claim 6, The operation state information is network equipment, characterized in that the operation or non-operation information of a plurality of interfaces included in each of at least one network equipment connected to the network equipment that has not received a response signal according to the transmitted ping signal Fault detection system. The method of claim 9, Determining that the network equipment for which the response signal according to the transmitted ping signal is not received is not a failure when operation information on at least one interface among a plurality of interfaces included in each of the at least one network equipment is received. Failure detection system of the network equipment, characterized in that. The method of claim 9, Determining the failure of the network equipment for which the response signal according to the transmitted ping signal is not received is that the non-operational information of all the plurality of interfaces included in each of the at least one or more network equipment is received or the operation state information Failure detection system of the network equipment, characterized in that the case is not received. The method of claim 9, The network device that does not receive the response signal according to the transmitted ping signal may be determined to be non-operational information about two randomly selected two interfaces among a plurality of interfaces included in each of the one or more network devices. The failure detection system of the network equipment, characterized in that when the operation state information is not received.
KR1020090049827A 2009-06-05 2009-06-05 Method and system for detecting fault of network device KR20100131107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090049827A KR20100131107A (en) 2009-06-05 2009-06-05 Method and system for detecting fault of network device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090049827A KR20100131107A (en) 2009-06-05 2009-06-05 Method and system for detecting fault of network device

Publications (1)

Publication Number Publication Date
KR20100131107A true KR20100131107A (en) 2010-12-15

Family

ID=43507210

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090049827A KR20100131107A (en) 2009-06-05 2009-06-05 Method and system for detecting fault of network device

Country Status (1)

Country Link
KR (1) KR20100131107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101144165B1 (en) * 2011-05-04 2012-05-14 엘아이지넥스원 주식회사 System for measuring performance of network equipment based on ethernet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101144165B1 (en) * 2011-05-04 2012-05-14 엘아이지넥스원 주식회사 System for measuring performance of network equipment based on ethernet

Similar Documents

Publication Publication Date Title
US11770314B2 (en) Methods and apparatus for capturing and/or using packets to facilitate fault detection
US8134928B1 (en) Technique for identifying a failed network interface card within a team of network interface cards
CN101917287B (en) Fault processing method and fault detecting system of IRF (Intelligent Resilient Framework)
CN104270268A (en) Network performance analysis and fault diagnosis method of distributed system
US7545741B1 (en) Technique for identifying a failed network interface card within a team of network interface cards
US20140122140A1 (en) Advanced managed service customer edge router
JP2016536906A5 (en)
WO2013127164A1 (en) Method for triggering bypass equipment switching, and bypass equipment switching method and device
WO2015109734A1 (en) Pseudo wire protection method, device and node
JP2004171370A (en) Address control system and method between client/server in redundant constitution
KR20110125969A (en) Apparatus and method for automatically rebooting power supply for network terminal
CN107465527B (en) Network element, protection switching method and system thereof
KR20100131107A (en) Method and system for detecting fault of network device
KR20200116784A (en) Network Error Detection Method
JP2009232263A (en) Communication device, and fault monitoring method
US8111625B2 (en) Method for detecting a message interface fault in a communication device
US9118540B2 (en) Method for monitoring a plurality of rack systems
CN108141406B (en) Method, device and equipment for processing service fault
CN109787797B (en) Link fault detection method, device and system
JP4692419B2 (en) Network device, redundant switching method used therefor, and program thereof
KR100939352B1 (en) Method and Apparatus for Monitoring Service Fault
CN109450712A (en) A kind of fault detection method of communication equipment
US7808893B1 (en) Systems and methods for providing redundancy in communications networks
KR20200101117A (en) Network system capable of detecting freezing status of node and method for detecting freezing status of node
US11411807B2 (en) Method and system for detecting and mitigating cabling issues with devices in substation automation systems

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination