CN104579757B - A kind of method and apparatus for detecting failure - Google Patents

Abstract

Embodiments of the present invention provide a method and device for detecting faults, the method includes: a first router obtains a detection request, and the detection request includes the identity of the second router; the first router obtains the first The identity of the peer router for message transmission by the router; the first router determines whether the second router is the peer router; if the second router is not the peer router, the first router Carry out fault warning. Such a solution not only helps to ensure the correctness of message transmission, but also helps to improve the efficiency of network fault location and repair.

Description

A method and device for detecting faults

technical field

The invention relates to the field of communication technology, in particular to a method and device for detecting faults.

Background technique

Usually, point-to-point physical links between routers are rarely directly connected through optical fibers, and most of them are connected through transmission equipment. For example, the transmission device may be a wavelength division device. According to the actual application, the links between the transmission devices may be adjusted by merging, splitting, crossing, etc. For this link adjustment, the router cannot automatically perceive it, so the router will not change the transmission path of the message, which is As a result, packets cannot be forwarded to the intended destination.

Referring to the network shown in FIG. 1, router R1 and router R2 are connected through transmission devices S1 and S2. Before the link adjustment, the forwarding rule configured on S1 is: packets entering through ingress port 1 are forwarded out through outbound port 2, and the forwarding rule configured on S2 is: packets entering through ingress port 3 are forwarded out through outbound port 4 ; Packets that come in through port 5 are forwarded out through port 6. Correspondingly, the transmission path of the message between R1 and R2 is: R1, S1 ₁₂ , S2 ₃₄ , R2. Among them, S1 ₁₂ indicates that the message enters through the inbound port 1 of S1 and is transferred out through the outbound port 2 of S1; S1 ₃₄ indicates that the message enters through the inbound port 3 of S2 and is forwarded out through the outbound port 4 of S2. If in practical applications, the link between S1 and S2 needs to be adjusted, for example, the forwarding rules configured on S1 can be adjusted to implement link adjustment. After the adjustment, the forwarding rule configured on S1 is as follows: Packets entering through inbound port 1 are forwarded out through outbound port 7. Correspondingly, if R1 does not change the transmission path of the message, but still sends the message to the ingress port 1 of S1, the message will reach the router R3 after going through S1 ₁₇ and S2 ₅₆ , but R3 is not the intended purpose of this message forwarding Routers, resulting in packet transmission errors.

Contents of the invention

The method and device for detecting faults provided by the embodiments of the present invention help to ensure the correctness of message transmission.

For this reason, the embodiment of the present invention provides following technical scheme:

In a first aspect, a method for detecting a fault is provided, the method comprising:

The first router obtains a detection request, where the detection request includes the identity of the second router;

The first router obtains the identity of the peer router for which the first router transmits the message;

The first router determines whether the second router is the peer router;

If the second router is not the peer router, the first router performs fault warning.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the detection request is a configuration request message, the detection request includes a first option field, and the first option field is used to carry the the identity of the second router;

The detection response is a configuration response message, and the detection response includes a second option field, and the second option field is used to carry the identity of the first router.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the detection request is a response request message, and the detection request includes a first option field, and the first option field is used to carry the the identity of the second router;

The detection response is a response message, and the detection response includes a second option field, and the second option field is used to carry the identity of the first router.

In combination with the first aspect or the first or second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the method further includes:

If the second router is the peer router, the first router sends a detection response to the second router, where the detection response includes the identity of the first router.

In a second aspect, a method for detecting a fault is provided, the method comprising:

the second router sends a detection request to the first router, where the detection request includes the identity of the second router;

The second router determines whether to obtain the detection response sent by the first router;

If the detection response sent by the first router is not obtained, the second router performs fault warning.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the detection response includes the identity of the first router, and the method further includes:

If the detection response sent by the first router is obtained, the second router obtains the identity of the peer router for packet transmission by the second router;

The second router determines whether the first router is the peer router;

If the first router is not the peer router, the second router performs fault warning.

In a third aspect, a device for detecting a fault is provided, the device comprising:

A detection request obtaining unit, configured to obtain a detection request, where the detection request includes the identity of the second router;

an identity identification obtaining unit, configured to obtain the identity identification of the peer router for message transmission by the first router;

a determining unit, configured to determine whether the second router is the peer router;

The early warning unit is configured to perform a fault early warning when the determining unit determines that the second router is not the peer router.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the device further includes:

A sending unit, configured to send a detection response to the second router when the determining unit determines that the second router is the peer router, the detection response including the identity of the first router.

In a fourth aspect, a device for detecting a fault is provided, the device comprising:

a sending unit, configured to send a detection request to the first router, where the detection request includes the identity of the second router;

a first determining unit, configured to determine whether to obtain a detection response sent by the first router;

The first early warning unit is configured to, when the first determination unit determines that the detection response sent by the first router has not been obtained, perform a failure early warning.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the detection response includes the identity of the first router, and the device further includes:

An obtaining unit, configured to obtain the identity of the peer router for message transmission by the second router when the first determining unit determines to obtain the detection response sent by the first route;

a second determining unit, configured to determine whether the first router is the peer router;

The second early warning unit is configured to perform fault early warning when the second determination unit determines that the first router is not the peer router.

In a fifth aspect, a device for detecting a fault is provided, the device comprising: a processor and a memory;

The memory is used to store program instructions and data;

The processor is configured to read program instructions and data stored in the memory, and perform the following operations:

The processor obtains a detection request, where the detection request includes the identity of the second router;

The processor obtains the identity of the peer router for message transmission by the device;

the processor determines whether the second router is the peer router;

If the second router is not the peer router, the processor performs fault pre-warning.

In a sixth aspect, a device for detecting a fault is provided, the device comprising: a processor and a memory;

The memory is used to store program instructions and data;

The processor is configured to read program instructions and data stored in the memory, and perform the following operations:

The processor sends a detection request to the first router, where the detection request includes the identity of the device;

The processor determines whether to obtain a detection response sent by the first router;

If the detection response sent by the first router is not obtained, the processor performs fault warning.

In the method and device for detecting faults in the embodiments of the present invention, the first router obtains the detection request sent by the second router, and determines whether the second router is the first router to transmit the fault according to the identity of the second router carried in the detection request. The peer router of the message, if the second router is not the peer router of the first router to transmit the message, the first router can give an early warning to the network administrator, prompting that the network between the first router and the second router is faulty. In this way, it not only helps to ensure the correctness of message transmission, but also helps to improve the efficiency of network fault location and repair.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application, and those skilled in the art can also obtain other drawings based on these drawings.

Figure 1 is a schematic diagram of a network;

Fig. 2 is a kind of flowchart of the method for detecting fault of the embodiment of the present invention;

FIG. 3 is another flow chart of a method for detecting a fault according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an encoding format of an option field in an embodiment of the present invention;

Fig. 5 is a schematic diagram of another encoding format of the option field in the embodiment of the present invention;

FIG. 6 is a schematic diagram of a device for detecting faults according to an embodiment of the present invention;

FIG. 7 is another schematic diagram of a device for detecting faults according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a hardware configuration of a device for detecting faults according to an embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation manners.

Referring to FIG. 2 , it shows a method for detecting a fault according to an embodiment of the present invention, which may include:

101. The first router obtains a detection request, where the detection request includes the identity of the second router.

102. The first router obtains the identity of the peer router for packet transmission by the first router.

103. The first router determines whether the second router is the peer router.

104. If the second router is not the peer router, the first router performs a fault warning.

Usually, the first router and the second router use link layer protocols such as Point-to-Point Protocol (English: Point-to-Point Protocol, abbreviated: PPP) and advanced data link control (English: High-Level Data Link Control, abbreviated: HDLC). , after the connection is established, the second router will regularly send Keepalives to the first router to keep the connection. normal. That is to say, the second router considers that the connection between the second router and the first router is normal as long as it confirms that the message sent by it can be responded to. Referring to the example in Figure 1, before the link is adjusted, the Keepalive sent by R1 is forwarded to R2. If R2 receives the Keepalive and responds with an ACK to R1, R1 will determine that the connection between R1 and R2 is normal. After the link is adjusted, the Keepalive sent by R1 is forwarded to R3. If R3 receives the Keepalive and responds to R1 with an ACK, R1 will also determine that the connection between R1 and R2 is normal. In addition, if after link adjustment, R2 can receive the Keepalive sent by other routers, then R2 can also respond ACK to the other routers, and accordingly determine that the connection between R1 and R2 is normal.

From the above introduction, it can be seen that the two routers that transmit the message can get a response to the message sent by the local end, or can receive the message sent by the opposite end, that is, determine the message transmission path between the two routers Normal, if the message is transmitted based on this, it may cause message transmission error.

For the above problems, in the embodiment of the present invention, when performing fault detection, the detection request sent by the router at the sending end to the router at the receiving end may carry the identity of the router at the sending end. Correspondingly, after the router at the receiving end obtains the detection request, it can use this The solution of the embodiment of the invention performs processing to confirm whether there is a wrongly connected link on the transmission path between the two. For example, the router at the receiving end may be a first router, the router at the sending end may be a second router, and the identity identifier of the router may be the device identifier of the router and/or the port identifier of the router, wherein the device identifier of the router may be the router's name and/or address, the port identifier of the router may be the port number and/or port address of the router.

Specifically, the first router may obtain the identity of the peer router for packet transmission, and use the identity of the peer router to compare with the identity of the first router in the detection request, and perform a comparison based on the identity of the peer router. Do the following with the result:

(1) If the two are inconsistent, the first router may determine that the path for message transmission is faulty, that is, the message sent by the second router cannot be correctly forwarded to the predetermined destination, that is, the first router. Corresponding to this, the first router can perform a fault warning, prompting the network administrator that the network between the first router and the second router has a fault, which not only helps to ensure the correctness of message transmission, but also helps to improve network faults. Locating and repairing efficiency.

(2) If the two are consistent, the first router can determine that the packet transmission path is normal, that is, the packet sent by the second router can be forwarded to the predetermined destination, that is, the first router.

For example, the first router may locally save the identity of the peer router for message transmission, so that after obtaining the detection request, the first router may locally read the identity of the peer router. Optionally, the first router may be used to forward multiple packets. Correspondingly, the first router may store multiple mapping relationships locally, and each mapping relationship is used to represent the relationship between a packet and the identity of the corresponding peer router. In this way, after the first router obtains the detection request, it can locally read the identity of the peer router according to the message to be forwarded.

Optionally, the identity, mapping relationship, etc. of the peer router can also be stored in other devices capable of communicating with the first router. After the first router obtains the detection request, it can access the other devices to obtain the peer router of identity. The embodiment of the present invention does not specifically limit the manner in which the first router obtains the identity of the peer router.

For example, the first router may perform fault pre-warning in at least one of the following manners: a fault pre-warning by display, a fault pre-warning by sound, and a fault pre-warning by light. For example, the first router can display in text that there is a fault between the first router and the second router; or, the first router can announce that there is a fault between the first router and the second router in a voice mode; or, the first router can The blinking mode indicates that there is a fault between the first router and the second router. The embodiment of the present invention may not specifically limit the fault alarm manner.

Optionally, the first router determines that the second router is the peer router, and the first router can handle it in the following two ways:

(1) The first router generates a detection response and feeds it back to the second router. Correspondingly, after receiving the detection response, the second router can determine that the link between the first router and the second router is normal, and the message can be transmitted correctly. .

(2) The first router generates a detection response carrying the identity of the first router, and feeds it back to the second router. Correspondingly, after the second router receives the detection response, it can pass the identity of the first router in the detection response to ID, to determine whether the first router is the peer router for the second router to transmit packets, if yes, the second router determines that the link between the first router and the second router is normal, and can correctly transmit packets; if not , the second router determines that the link between the first router and the second router is faulty.

Referring to FIG. 3 , it shows a method for detecting a fault according to an embodiment of the present invention, which may include:

201. The second router sends a detection request to the first router, where the detection request includes the identity of the second router.

202. The second router determines whether to obtain a detection response sent by the first router.

203. If the detection response sent by the first router is not obtained, the second router performs a fault warning.

In the embodiment of the present invention, in addition to the first router performing fault detection according to the solution shown in FIG. 2 , the second router may also perform fault detection according to the feedback from the first router. As mentioned above, if the first router determines that the link is faulty, it will perform a fault warning. That is to say, if the second router does not receive the detection response fed back by the first router, it can determine the link between the two. There is a fault; if a detection response fed back by the first router is received, it can be determined that the link between the two is normal.

Optionally, in order to further improve the accuracy of fault detection in the embodiment of the present invention, the detection response fed back by the first router to the second router may also include the identity of the first router. Correspondingly, the second router may perform the following processing : if the detection response sent by the first router is obtained, the second router obtains the identity of the peer router for message transmission by the second router; the second router determines whether the first router is the the peer router; if the first router is not the peer router, the second router performs fault warning. That is to say, after receiving the detection response fed back by the first router, the second router can also determine the identity of the router through the identity of the first router carried in the detection response and the identity of the peer router for packet transmission by the second router. Whether the two are consistent, if they are consistent, the second router will determine that the link between the second router and the first router is normal, and the message can be transmitted correctly; if not, the second router will determine that the link between the second router and the first router is link failure.

Optionally, this embodiment of the present invention can be applied to the link establishment phase, that is, when trying to establish a link for transmitting the first packet between the first router and the second router, the embodiment of the present invention can be used to determine the first Whether packets can be correctly forwarded between the two. Referring to the example shown in Figure 1, the detection process can be embodied as:

1. R1 sends a detection request to R2 through ingress port 1 of S1, and the detection request carries the IP address of R1. Optionally, the detection request may be a message dedicated to fault detection, or the detection request may be a configuration request (English: Configure-Request) message. That is to say, in this embodiment of the present invention, based on the Configure-Request message defined by PPP, the options (English: options) field therein may be expanded to obtain the detection request. That is, the detection request includes an extended first option field, where the first option field is used to carry the identity of the second router.

2. If an attempt is made to establish a link connection before link adjustment, the detection request sent by R1 is delivered to R2 via S1 ₁₂ and S2 ₃₄ .

3. After R2 receives the detection request, it obtains the identity of the peer router that transmits the first message locally, that is, obtains the IP address of R1, and the identity of the peer router is consistent with the identity carried in the detection request. Therefore, R2 determines that the first packet can be correctly transmitted between R1 and R2. In this way, R2 can generate a detection response to feed back to R1, and the detection response carries the IP address of R2. Optionally, the detection response may be a message dedicated to fault feedback, or the detection response may be a configuration response (English: Configure-ACK) message. That is to say, in this embodiment of the present invention, based on the Configure-ACK message defined by PPP, the options (English: options) field therein may be extended to obtain a detection response. That is, the detection response includes an extended second option field, where the second option field is used to carry the identity of the first router. For example, in the Configure-Request message and the Configure-ACK message, the encoding format of the extended option field can be embodied as a schematic diagram shown in FIG. 4 .

4. After receiving the detection response fed back by R2, R1 can confirm that the first message can be correctly transmitted between R1 and R2 through the identification carried in the detection response. Therefore, the link connection between R1 and R2 can be established. Perform the transmission of the first packet.

5. If an attempt is made to establish a link connection after link adjustment, the detection request sent by R1 is sent to R3 via S1 ₁₇ and S2 ₅₆ .

6. After R3 receives the detection request, it obtains the identity of the peer router that transmits the first message locally, such as obtaining the IP address of router R4, and the identity of the peer router is inconsistent with the identity carried in the detection request , therefore, R3 determines that there is a wrongly connected link between R1 and R3, and the first message cannot be transmitted correctly. In this way, R3 can generate a detection response to feed back to R1, and the detection response carries the IP address of R3. Optionally, the detection response may be a message dedicated to fault feedback, or the detection response may be a Configure-ACK message, which can be referred to above, and will not be described in detail here. Optionally, R3 can send a fault alarm to the network administrator in text.

7. After receiving the detection response fed back by R3, R1 can determine that there is a wrongly connected link between R1 and R2 through the identification carried in the detection response, that is, based on the current packet transmission path, the first packet cannot be The document is delivered to the predetermined destination, and the link connection between R1 and R2 is not established for the time being. Optionally, R1 can also send a fault alarm to the network administrator in text. Optionally, R1 may also recalculate the transmission path, so as to realize correct transmission of the first packet between R1 and R2.

Optionally, this embodiment of the present invention can be applied to the link maintenance phase, that is, after a link for transmitting the first message is established between the first router and the second router, the embodiment of the present invention can be used to determine the first message Whether the text can continue to be forwarded correctly between the two. Referring to the example shown in Figure 1, the detection process can be embodied as:

1. R1 sends a detection request to R2 through ingress port 1 of S1, and the detection request carries the IP address of R1. Optionally, the detection request may be a message dedicated to fault detection, or the detection request may be an echo request (English: Echo-Request) message. That is to say, in the embodiment of the present invention, based on the Echo-Request message defined by PPP, the options (English: options) field therein may be expanded to obtain the detection request. That is, the detection request includes an extended first option field, where the first option field is used to carry the identity of the second router.

2. Before link adjustment, the detection request sent by R1 is delivered to R2 via S1 ₁₂ and S2 ₃₄ . Referring to the introduction above, R2 receives the detection request and determines that based on the current packet transmission path, the first packet can still be forwarded to the intended destination, so R2 can generate a detection response carrying R2’s IP address , and fed back to R1. Optionally, the detection response may be a message dedicated to fault feedback, or the detection response may be an echo response (English: Echo-Reply) message. That is to say, the embodiment of the present invention can expand the option (English: options) field in the Echo-Reply message defined by PPP to obtain the detection response. That is, the detection response includes an extended second option field, where the second option field is used to carry the identity of the first router. For example, in the Echo-Request message and the Echo-Reply message, the encoding format of the extended option field can be embodied as a schematic diagram shown in FIG. 5 .

3. Referring to the introduction above, R1 receives the detection response fed back by R2, and determines that based on the current packet transmission path, the first packet can still be forwarded to the intended destination, and R1 can continue to maintain the communication with R2. The link is connected, and the link is used to transmit the first packet.

4. After the link adjustment, the detection request sent by R1 is delivered to R3 via S1 ₁₇ and S2 ₅₆ . Referring to the introduction above, R3 receives the detection request and determines that there is a wrong link between R1 and R3, and R3 is not the intended destination for forwarding the first message, so R3 can generate an IP address carrying R3 The detection response is fed back to R1. Optionally, the detection response may be a message dedicated to fault feedback, or the detection response may be an Echo-Reply message, which can be referred to above, and will not be described in detail here. Optionally, R3 can send a fault alarm to the network administrator in text.

5. Referring to the introduction above, R1 receives the detection response fed back by R3, and determines that based on the current packet transmission path, the first packet cannot be forwarded to the intended destination, that is, there is a wrong connection between R1 and R2 link, R1 can revoke the link connection with R2. Optionally, R1 can also send a fault alarm to the network administrator in text. Optionally, R1 may also recalculate the transmission path, and use the recalculated transmission path to implement correct transmission of the first message between R1 and R2.

Correspondingly, an embodiment of the present invention also provides a device for detecting a fault, and the device for detecting a fault can execute the method provided in the embodiment corresponding to FIG. 2 . Referring to the schematic diagram shown in Figure 6, the device may include:

A detection request obtaining unit 301, configured to obtain a detection request, where the detection request includes the identity of the second router;

An identity identification obtaining unit 302, configured to obtain the identity identification of the peer router for message transmission by the first router;

A determining unit 303, configured to determine whether the second router is the peer router;

The early warning unit 304 is configured to perform a failure early warning when the determining unit determines that the second router is not the peer router.

To sum up, the device for detecting faults in this embodiment of the present invention can prompt the network administrator when the opposite router that the first router transmits a message to is inconsistent with the second router carried in the detection message. If the network between the two routers fails, this not only helps to ensure the correctness of message transmission, but also helps to improve the efficiency of network fault location and repair.

Optionally, the detection request is a configuration request message, the detection request includes a first option field, and the first option field is used to carry the identity of the second router;

The detection response is a configuration response message, and the detection response includes a second option field, and the second option field is used to carry the identity of the first router.

Optionally, the detection request is a response request message, the detection request includes a first option field, and the first option field is used to carry the identity of the second router;

The detection response is a response message, and the detection response includes a second option field, and the second option field is used to carry the identity of the first router.

Optionally, the device also includes:

A sending unit, configured to send a detection response to the second router when the determining unit determines that the second router is the peer router, the detection response including the identity of the first router.

Correspondingly, the embodiment of the present invention also provides another device for detecting a fault, and the device for detecting a fault can execute the method provided in the embodiment corresponding to FIG. 3 . Referring to the schematic diagram shown in Figure 7, the device may include:

A sending unit 401, configured to send a detection request to the first router, where the detection request includes the identity of the second router;

A first determining unit 402, configured to determine whether to obtain a detection response sent by the first router;

The first warning unit 403 is configured to perform a failure warning when the first determination unit determines that the detection response sent by the first router has not been obtained.

Optionally, the detection response includes the identity of the first router, and the device further includes:

An obtaining unit, configured to obtain the identity of the peer router for message transmission by the second router when the first determining unit determines to obtain the detection response sent by the first route;

a second determining unit, configured to determine whether the first router is the peer router;

The second early warning unit is configured to perform fault early warning when the second determination unit determines that the first router is not the peer router.

Correspondingly, an embodiment of the present invention further provides a device for detecting a fault, and the device for detecting a fault may execute the method provided in the embodiment corresponding to FIG. 2 or FIG. 3 . Referring to the schematic diagram shown in FIG. 8 , the device 500 for detecting a fault may include: a processor 501 , a memory 502 and a communication interface 503 . Wherein, the processor 501 , the memory 502 and the communication interface 503 may be connected through a communication bus 504 . The memory 502 is used to store programs, and the processor 501 executes specific operations according to executable instructions contained in the programs read from the memory 502 .

Optionally, the detection request obtaining unit 301, the identity identification obtaining unit 302, the determining unit 303 and the early warning unit 304 in FIG. 6 may be implemented by the processor 501 in FIG. At least one physical processor.

It should be noted that the device for detecting faults shown in Figure 5 and the device for detecting faults shown in Figure 6 may be the same device, it can be considered that Figure 5 shows a device for detecting faults from a logical The content of the faulty device includes, and Figure 6 shows the content of a device for detecting faults from a physical point of view.

The processor 501 is configured to read instructions and data stored in the memory 502, and perform the following operations:

The processor obtains a detection request through a communication interface, where the detection request includes the identity of the second router;

The processor obtains the identity of the peer router for message transmission by the device;

the processor determines whether the second router is the peer router;

If the second router is not the peer router, the processor performs fault pre-warning.

Optionally, the detection request is a configuration request message, the detection request includes a first option field, and the first option field is used to carry the identity of the second router;

The detection response is a configuration response message, and the detection response includes a second option field, and the second option field is used to carry the identity of the device.

Optionally, the detection request is a response request message, the detection request includes a first option field, and the first option field is used to carry the identity of the second router;

The detection response is a response message, and the detection response includes a second option field, and the second option field is used to carry the identity of the device.

Optionally, the processor may also perform the following operations:

If the second router is the peer router, the processor sends a detection response to the second router through a communication interface, where the detection response includes the identity of the device.

Optionally, the sending unit 401, the first determining unit 402, and the first warning unit 403 in FIG. 7 may be implemented by the processor 501 in FIG. 8 according to executable instructions stored in the memory 502, and the processor 501 may include at least one physical processing device.

It should be noted that the device for detecting faults shown in Figure 7 and the device for detecting faults shown in Figure 8 may be the same device, it can be considered that Figure 7 shows a device for detecting The content of the faulty device, and Figure 8 shows the content of a device for detecting faults from a physical point of view.

The processor 501 is configured to read instructions and data stored in the memory 502, and perform the following operations:

The processor sends a detection request to the first router through the communication interface, and the detection request includes the identity of the device;

The processor determines whether to obtain a detection response sent by the first router;

If the detection response sent by the first router is not obtained, the processor performs fault warning.

Optionally, the detection response includes the identity of the first router, and the processor may further perform the following operations:

If the detection response sent by the first route is obtained, the processor obtains the identity of the peer router through which the device transmits the message;

the processor determines whether the first router is the peer router;

If the first router is not the peer router, the processor performs fault pre-warning.

From the above description of the implementation manners, it can be seen that those skilled in the art can clearly understand that all or part of the methods in the above embodiments can be implemented by means of software plus a general hardware platform. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, disk , optical disk, etc., including several instructions to make a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

It should be noted that each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. place. In particular, for the device and device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for relevant parts, please refer to part of the description of the method embodiments. The device and system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

The above descriptions are only optional implementations of the present invention, and are not intended to limit the protection scope of the present invention. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. a kind of method for detecting failure, which is characterized in that the method includes：

The first router obtains detection request, and the detection request includes the identity of the second router；

The first router obtains the identity that the first router carries out the end-to-end router of message transmissions；

The first router determines whether the second router is the end-to-end router；

If the second router is not the end-to-end router, the first router carries out fault pre-alarming.

2. according to the method described in claim 1, it is characterized in that, detection request is configuring request message, the detection Request includes the first Option Field, and first Option Field is used to carry the identity of the second router；

Detection response is configuration response message, and the detection response includes the second Option Field, and second Option Field is used for Carry the identity of the first router.

3. according to the method described in claim 1, it is characterized in that, detection request is to respond request message, the detection Request includes the first Option Field, and first Option Field is used to carry the identity of the second router；

Detection response is responds response message, and the detection response includes the second Option Field, and second Option Field is used for Carry the identity of the first router.

4. method according to any one of claims 1 to 3, which is characterized in that the method further includes：

If the second router is the end-to-end router, the first router sends to the second router and detects Response, the detection response include the identity of the first router.

5. a kind of method for detecting failure, which is characterized in that the method includes：

The second router sends detection request to the first router, and the detection request includes the identity mark of the second router Know；

The second router determines whether to obtain the detection response that the first router is sent；

If not obtaining the detection response that the first router is sent, the second router carries out fault pre-alarming；

Wherein, the detection response is that the first router passes through the identity of the second router and described first When the identity that router carries out the end-to-end router of message transmissions determines that the second router is the end-to-end router, The first router is sent to the second router.

6. according to the method described in claim 5, it is characterized in that, the detection response includes the identity of the first router Mark, the method further include：

If obtaining the first via to be responded by the detection sent, the second router obtains the second router and is reported The identity of the end-to-end router of text transmission；

The second router determines whether the first router is the end-to-end router；

If the first router is not the end-to-end router, the second router carries out fault pre-alarming.

7. a kind of for detecting the device of failure, which is characterized in that described device includes：

Detection request obtaining unit, for obtaining detection request, the detection request includes the identity of the second router；

Identity obtaining unit, the identity for carrying out the end-to-end router of message transmissions for obtaining the first router；

Determination unit, for determining whether the second router is the end-to-end router；

Prewarning unit, for when it is the end-to-end router that the determination unit, which determines the second router not, carrying out event Hinder early warning.

8. device according to claim 7, which is characterized in that described device further includes：

Transmission unit, for when the determination unit determines that the second router is the end-to-end router, to described the Two routers send detection response, and the detection response includes the identity of the first router.

9. a kind of for detecting the device of failure, which is characterized in that described device includes：

Transmission unit, for sending detection request to the first router, the detection request includes the identity mark of the second router Know；

First determination unit is used to determine whether to obtain the detection response that the first router is sent；

First prewarning unit, for determining the detection response for not obtaining the first router and sending in first determination unit When, carry out fault pre-alarming；

Wherein, the detection response is that the first router passes through the identity of the second router and described first When the identity that router carries out the end-to-end router of message transmissions determines that the second router is the end-to-end router, The first router is sent to the second router.

10. device according to claim 9, which is characterized in that the detection response includes the body of the first router Part mark, described device further include：

Obtaining unit, for when first determination unit determines that obtain the first via is responded by the detection sent, obtaining The second router carries out the identity of the end-to-end router of message transmissions；

Second determination unit, for determining whether the first router is the end-to-end router；

Second prewarning unit is the end-to-end router for determining the first router not in second determination unit When, carry out fault pre-alarming.