CN111010299A - Method and device for recording message forwarding process - Google Patents
Method and device for recording message forwarding process Download PDFInfo
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- CN111010299A CN111010299A CN201911300371.0A CN201911300371A CN111010299A CN 111010299 A CN111010299 A CN 111010299A CN 201911300371 A CN201911300371 A CN 201911300371A CN 111010299 A CN111010299 A CN 111010299A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L41/0677—Localisation of faults
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Abstract
The application provides a method and a device for recording a message forwarding process, wherein the method comprises the following steps: after receiving a message to be forwarded, checking whether the message meets a set monitoring condition and forwarding the message according to a corresponding forwarding flow; and if the message meets the set monitoring condition, storing the forwarding information of the message in the forwarding process into a preset storage structure for recording the message forwarding process according to the receiving sequence of the message. By applying the method, the forwarding flow of the message in the network equipment can be accurately recorded, and technicians can quickly locate the reason of the fault of the network equipment according to the forwarding flow of the message in the network equipment.
Description
Technical Field
The present application relates to the field of data processing technologies, and in particular, to a method and an apparatus for recording a packet forwarding process.
Background
At present, if a network fault occurs in the operation process of a network device, a technician can grasp a message through an upstream device and/or a downstream device thereof to locate the cause of the network fault occurring in the network device.
However, the above method for locating the cause of the network device failure is not only difficult, but also low in efficiency, and therefore, an implementation method capable of locating the cause of the network device failure simply and quickly is urgently needed.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for recording a packet forwarding process, so as to solve the problem in the prior art that the cause of the failure of the network device cannot be simply and quickly located.
Specifically, the method is realized through the following technical scheme:
according to a first aspect of an embodiment of the present application, a method for recording a packet forwarding process is provided, where the method includes:
after receiving a message to be forwarded, checking whether the message meets a set monitoring condition and forwarding the message according to a corresponding forwarding flow;
and if the message meets the set monitoring condition, storing the forwarding information of the message in the forwarding process into a preset storage structure for recording the message forwarding process according to the receiving sequence of the message.
Optionally, the forwarding process includes a plurality of monitoring nodes;
the storing the forwarding information of the message in the forwarding process into a preset storage structure for recording the message forwarding process includes:
and storing the forwarding information of the message on the plurality of monitoring nodes into a preset storage structure for recording a message forwarding process according to the sequence of the message passing through the plurality of monitoring nodes.
Optionally, the checking whether the packet meets a set monitoring condition includes:
when the message passes through the first monitoring node, checking whether the message meets a set monitoring condition;
the method further comprises the following steps:
and if the message meets the set monitoring condition, adding a monitoring mark for indicating that the message meets the set monitoring condition in a buffer area corresponding to the message.
Optionally, the checking whether the packet meets a set monitoring condition includes:
when the message passes through a non-first monitoring node, checking whether a monitoring mark for indicating that the message meets a set monitoring condition exists in a buffer area corresponding to the message;
if the message exists, determining that the message meets the set monitoring condition;
and if the message does not exist, determining that the message does not meet the set monitoring condition.
Optionally, when the packet meets the set monitoring condition, the method further includes:
adding 1 to a preset counting number, wherein the initial value of the counting number is 0;
checking whether the counting times reach a set threshold value;
if yes, after receiving the message to be forwarded, forwarding the message;
if not, after receiving the message to be forwarded, returning to the step of checking whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow.
According to a second aspect of the embodiments of the present application, there is provided an apparatus for recording a packet forwarding procedure, the apparatus including:
the first checking module is used for checking whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow after receiving the message to be forwarded;
and the information storage module is used for storing the forwarding information of the messages in the forwarding process into a preset storage structure for recording the message forwarding process according to the receiving sequence of the messages if the messages meet the set monitoring conditions.
In an embodiment, the forwarding process includes a plurality of monitoring nodes;
the information storage module is specifically configured to:
and storing the forwarding information of the message on the plurality of monitoring nodes into a preset storage structure for recording a message forwarding process according to the sequence of the message passing through the plurality of monitoring nodes.
In an embodiment, the first checking module is specifically configured to:
when the message passes through the first monitoring node, checking whether the message meets a set monitoring condition;
the device further comprises:
and the mark adding module is used for adding a monitoring mark for indicating that the message meets the set monitoring condition in the buffer area corresponding to the message if the message meets the set monitoring condition.
In an embodiment, the first checking module is specifically configured to:
when the message passes through a non-first monitoring node, checking whether a monitoring mark for indicating that the message meets a set monitoring condition exists in a buffer area corresponding to the message; if the message exists, determining that the message meets the set monitoring condition; and if the message does not exist, determining that the message does not meet the set monitoring condition.
In one embodiment, the apparatus further comprises:
the statistical module is used for adding 1 to a preset statistical frequency, and the initial value of the statistical frequency is 0;
the second checking module is used for checking whether the counting times reach a set threshold value;
the first forwarding module is used for forwarding the message after receiving the message to be forwarded if the statistical frequency reaches a set threshold value;
and the second forwarding module is used for returning to the step of checking whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow after receiving the message to be forwarded if the statistical frequency is checked to not reach the set threshold value.
The method for recording the message forwarding flow of this embodiment checks whether the message satisfies the set monitoring condition and forwards the message according to the corresponding forwarding flow after receiving the message to be forwarded, if yes, storing the forwarding information of the message in the forwarding flow into a preset storage structure for recording the message forwarding flow according to the receiving sequence of the message, the forwarding information of the messages can be stored according to the receiving sequence of the messages, further, the forwarding flow of the messages in the network equipment can be output according to the receiving sequence of the messages, and through the processing, can prevent the problem of disordered display information caused by concurrency, namely can accurately output the forwarding flow of the message in the network equipment, therefore, technicians can quickly locate the reason of the fault of the network equipment according to the forwarding process of the message in the network equipment.
Drawings
Fig. 1 is a flowchart of an embodiment of a method for recording a message forwarding flow according to an exemplary embodiment of the present application.
Fig. 2 is an exemplary diagram of a storage structure for recording a packet forwarding flow;
fig. 3 is a hardware structure diagram of a network device where the apparatus for recording a packet forwarding process of the present application is located.
Fig. 4 is a block diagram of an embodiment of a device for recording a packet forwarding process according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Referring to fig. 1, a flowchart of an embodiment of a method for recording a packet forwarding process according to an exemplary embodiment of the present application is shown, where the method includes the following steps:
step 101: after receiving the message to be forwarded, checking whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow.
First, in the embodiment of the present application, the monitoring condition may be preconfigured in the network device by the user through the command line. As one example, the monitored conditions may include one or more of: monitoring all received messages, monitoring messages according to an IP address (a source IP address and/or a destination IP address), monitoring messages according to a port (a source port and/or a destination port), monitoring messages according to a protocol (an IPv6 protocol, an ARP protocol and the like), monitoring messages according to a VLAN to which the monitoring messages belong and the like.
In this embodiment, after receiving a message to be forwarded, a network device may check whether the message satisfies a set monitoring condition, and forward the message according to a corresponding forwarding flow.
Step 102: and if the message meets the set monitoring condition, storing the forwarding information of the message in the forwarding process into a preset storage structure for recording the message forwarding process according to the receiving sequence of the message.
In this embodiment of the present application, when it is checked that the packet meets the set monitoring condition by performing step 101, the forwarding information of the packet in the forwarding flow may be stored in a preset storage structure for recording the packet forwarding flow according to the receiving sequence of the packet.
Further, when the forwarding information of the message in the forwarding process is stored in the preset storage structure for recording the message forwarding process, since the forwarding process may include a plurality of monitoring nodes, the forwarding information of the message on the plurality of monitoring nodes may be stored in the preset storage structure for recording the message forwarding process according to the sequence that the message passes through the plurality of monitoring nodes.
For example, taking a monitoring node implementing NAT address translation as an example, the forwarding information on the monitoring node may include an original private IP address of the message and a public IP address after NAT translation.
As an example, the storage structure for recording the packet forwarding process may be a linked list, a queue, a stack, and the like, which is not limited in this application. For the convenience of understanding, a linked list is taken as an example, and fig. 2 is shown to illustrate an exemplary storage structure for recording the message forwarding flow.
As shown in fig. 2, the network device receives the message 1, the message 2, and the message 3 in sequence. When the message 1 passes through a first monitoring node, adding forwarding information of the message 1 on the first monitoring node as the first node into a dynamic link for recording a message forwarding process, and when the message 1 passes through 2 nd, 3 rd and 4 th monitoring nodes in sequence, adding the forwarding information of the message 1 on each monitoring node as a node into a node corresponding to the previous monitoring node.
When the message 2 passes through the first monitoring node, adding forwarding information of the message 2 on the first monitoring node as a node to the back of the first node corresponding to the message 1; similarly, when the packet 3 passes through the first monitoring node, the forwarding information of the packet 3 on the first monitoring node is added to the back of the first node corresponding to the packet 2 as a node.
For the storage process of forwarding information when the packet 2 and the packet 3 pass through the 2 nd, the 3 rd, and the 4 th monitoring nodes in sequence, reference may be made to the above description, which is not described herein again. So far, the description about the flow shown in fig. 1 is completed.
It can be seen from the above embodiments that, after receiving a message to be forwarded, checking whether the message satisfies a set monitoring condition and forwarding the message according to a corresponding forwarding flow, and if so, storing forwarding information of the message in the forwarding flow into a preset storage structure for recording the message forwarding flow according to a receiving order of the message, so as to store the forwarding information of the message according to the receiving order of the message, and further, outputting the forwarding flow of the message in a network device according to the receiving order of the message.
In addition, in an embodiment, after receiving a message to be forwarded, the network device may check whether the message satisfies a set monitoring condition when the message passes through a first monitoring node, and if so, add a monitoring flag indicating that the message satisfies the set monitoring condition in an SKB (Struct Sk _ Buffer, a Buffer area for receiving and sending packets in a TCP/IP stack) corresponding to the message. And then, when the message passes through a non-first monitoring node, checking whether the message meets the set monitoring condition by checking whether a monitoring mark exists in the SKB corresponding to the message, wherein when the monitoring mark exists in the SKB corresponding to the message, the message is determined to meet the set monitoring condition, and when the monitoring mark does not exist in the SKB corresponding to the message, the message is determined not to meet the set monitoring condition. By the processing, performance overhead caused by matching messages and set monitoring conditions for multiple times at a plurality of monitoring nodes can be avoided.
In addition, in an embodiment, since the problem cause can be conveniently located subsequently by monitoring the forwarding process of a certain number of messages, an upper limit of monitoring duration or an upper limit of the number of monitored messages may be set, and when the monitoring duration reaches the set upper limit of monitoring duration or the number of monitored messages reaches the set upper limit of number, the method for recording the message forwarding process provided in the embodiment of the present application may be stopped. By the processing, the calculation resource of the network equipment can be saved and excessive performance overhead can be avoided while the reason of the subsequent positioning problem is not influenced.
The following takes setting of the upper limit of the number of the monitored packets as an example, and further supplementary description is made on the method for recording the packet forwarding flow provided in the embodiment of the present application:
in an embodiment, after checking that the packet satisfies the set monitoring condition, the network device may add 1 to a preset statistical number, where an initial value of the statistical number is 0, and thus the statistical number may truly reflect the number of the monitored packets. Then, the network device may check whether the counted number of times reaches a set threshold, and if so, the network device may directly forward the message when subsequently receiving the message to be forwarded; if not, the network device may execute the method for recording the message forwarding flow provided by the present application when subsequently receiving the message to be forwarded.
Corresponding to the embodiment of the method for recording the message forwarding flow, the application also provides an embodiment of a device for recording the message forwarding flow.
The embodiment of the device for recording the message forwarding process can be applied to network equipment. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. The software implementation is taken as an example, and is formed by reading corresponding computer program instructions in the nonvolatile memory into the memory for operation through the processor of the network device where the software implementation is located as a logical means. In terms of hardware, as shown in fig. 3, a hardware structure diagram of a network device in which the apparatus for recording a packet forwarding flow of the present application is located is shown, except for the processor 31, the memory 32, the network interface 33, the nonvolatile memory 34, and the internal bus 35 shown in fig. 3, the network device in which the apparatus is located in the embodiment may also include other hardware according to an actual function of the network device, which is not described again.
Referring to fig. 4, a block diagram of an embodiment of an apparatus for recording a packet forwarding procedure according to an exemplary embodiment of the present application is shown, where the apparatus includes: a first checking module 41 and an information storage module 42.
The first checking module 41 is configured to, after receiving a message to be forwarded, check whether the message meets a set monitoring condition and forward the message according to a corresponding forwarding flow;
and the information storage module 42 is configured to, if the packet meets the set monitoring condition, store forwarding information of the packet in the forwarding flow to a preset storage structure for recording a packet forwarding flow according to the receiving sequence of the packet.
In an embodiment, the forwarding process includes a plurality of monitoring nodes;
the information storage module 42 is specifically configured to:
and storing the forwarding information of the message on the plurality of monitoring nodes into a preset storage structure for recording a message forwarding process according to the sequence of the message passing through the plurality of monitoring nodes.
In an embodiment, the first checking module 41 is specifically configured to:
when the message passes through the first monitoring node, checking whether the message meets a set monitoring condition;
the device further comprises (not shown in fig. 4):
and the mark adding module is used for adding a monitoring mark for indicating that the message meets the set monitoring condition in the buffer area corresponding to the message if the message meets the set monitoring condition.
In an embodiment, the first checking module 41 is specifically configured to:
when the message passes through a non-first monitoring node, checking whether a monitoring mark for indicating that the message meets a set monitoring condition exists in a buffer area corresponding to the message; if the message exists, determining that the message meets the set monitoring condition; and if the message does not exist, determining that the message does not meet the set monitoring condition.
In an embodiment, the apparatus further comprises (not shown in fig. 4):
the statistical module is used for adding 1 to a preset statistical frequency, and the initial value of the statistical frequency is 0;
the second checking module is used for checking whether the counting times reach a set threshold value;
the first forwarding module is used for forwarding the message after receiving the message to be forwarded if the statistical frequency reaches a set threshold value;
and the second forwarding module is used for returning to the first checking module to check whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow after receiving the message to be forwarded if the statistical frequency is checked to not reach the set threshold value.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and 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 modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A method for recording a message forwarding process is characterized in that the method comprises the following steps:
after receiving a message to be forwarded, checking whether the message meets a set monitoring condition and forwarding the message according to a corresponding forwarding flow;
and if the message meets the set monitoring condition, storing the forwarding information of the message in the forwarding process into a preset storage structure for recording the message forwarding process according to the receiving sequence of the message.
2. The method of claim 1, wherein the forwarding process includes a plurality of monitoring nodes;
the storing the forwarding information of the message in the forwarding process into a preset storage structure for recording the message forwarding process includes:
and storing the forwarding information of the message on the plurality of monitoring nodes into a preset storage structure for recording a message forwarding process according to the sequence of the message passing through the plurality of monitoring nodes.
3. The method according to claim 2, wherein the checking whether the message satisfies a set monitoring condition comprises:
when the message passes through the first monitoring node, checking whether the message meets a set monitoring condition;
the method further comprises the following steps:
and if the message meets the set monitoring condition, adding a monitoring mark for indicating that the message meets the set monitoring condition in a buffer area corresponding to the message.
4. The method according to claim 2 or 3, wherein the checking whether the message satisfies a set monitoring condition comprises:
when the message passes through a non-first monitoring node, checking whether a monitoring mark for indicating that the message meets a set monitoring condition exists in a buffer area corresponding to the message;
if the message exists, determining that the message meets the set monitoring condition;
and if the message does not exist, determining that the message does not meet the set monitoring condition.
5. The method according to claim 1, wherein when the packet satisfies a set monitoring condition, the method further comprises:
adding 1 to a preset counting number, wherein the initial value of the counting number is 0;
checking whether the counting times reach a set threshold value;
if yes, after receiving the message to be forwarded, forwarding the message;
if not, after receiving the message to be forwarded, returning to the step of checking whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow.
6. An apparatus for recording a packet forwarding procedure, the apparatus comprising:
the first checking module is used for checking whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow after receiving the message to be forwarded;
and the information storage module is used for storing the forwarding information of the messages in the forwarding process into a preset storage structure for recording the message forwarding process according to the receiving sequence of the messages if the messages meet the set monitoring conditions.
7. The apparatus of claim 6, wherein the forwarding process comprises a plurality of monitoring nodes;
the information storage module is specifically configured to:
and storing the forwarding information of the message on the plurality of monitoring nodes into a preset storage structure for recording a message forwarding process according to the sequence of the message passing through the plurality of monitoring nodes.
8. The apparatus of claim 7, wherein the first checking module is specifically configured to:
when the message passes through the first monitoring node, checking whether the message meets a set monitoring condition;
the device further comprises:
and the mark adding module is used for adding a monitoring mark for indicating that the message meets the set monitoring condition in the buffer area corresponding to the message if the message meets the set monitoring condition.
9. The apparatus according to claim 7 or 8, wherein the first checking module is specifically configured to:
when the message passes through a non-first monitoring node, checking whether a monitoring mark for indicating that the message meets a set monitoring condition exists in a buffer area corresponding to the message; if the message exists, determining that the message meets the set monitoring condition; and if the message does not exist, determining that the message does not meet the set monitoring condition.
10. The apparatus of claim 6, further comprising:
the statistical module is used for adding 1 to a preset statistical frequency, and the initial value of the statistical frequency is 0;
the second checking module is used for checking whether the counting times reach a set threshold value;
the first forwarding module is used for forwarding the message after receiving the message to be forwarded if the statistical frequency reaches a set threshold value;
and the second forwarding module is used for returning to the first checking module to check whether the message meets the set monitoring condition and forwarding the message according to the corresponding forwarding flow after receiving the message to be forwarded if the statistical frequency is checked to not reach the set threshold value.
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