CN111464455B - Message output method and device - Google Patents
Message output method and device Download PDFInfo
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- CN111464455B CN111464455B CN202010228747.8A CN202010228747A CN111464455B CN 111464455 B CN111464455 B CN 111464455B CN 202010228747 A CN202010228747 A CN 202010228747A CN 111464455 B CN111464455 B CN 111464455B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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Abstract
The application provides a message output method and a device, which are applied to a shunt network device, wherein the method comprises the following steps: matching the received message with each strategy in a preset strategy set, wherein each strategy in the preset strategy set comprises a rule and an action; acquiring a policy identifier of at least one policy of which the rule is matched with the message and the corresponding action is sampling output; determining whether to output the message according to the current zone bit of the sampling bitmap corresponding to the strategy identification of the at least one strategy; and if the message is determined to be output, outputting the message through an output port corresponding to the strategy identifier of the at least one strategy in the corresponding relation between the strategy identifier and the output port. By applying the embodiment of the application, the message output effect is better, and the flexibility is better.
Description
Technical Field
The present application relates to the field of network communication technologies, and in particular, to a method and an apparatus for outputting a packet.
Background
After receiving a message, a shunt network device in a private network firstly matches preset strategies, each strategy comprises rules and actions, if the message matches at least one strategy rule, the message is processed according to the action corresponding to the at least one strategy rule, and if the corresponding action is output, the message is output to a corresponding service system. The output can include full flow output and sampling output, and the full flow output is all messages needing to be monitored, so all messages need to be output; only part of messages need to be monitored during sampling output, so that the messages can be output according to a sampling bitmap, one message is processed, the sampling bitmap is shifted by one bit, the messages are output when the current flag bit is 1, and the messages are not output when the current flag bit is 0.
Because one service system can set a plurality of strategies, and different strategies can correspond to different sampling bitmaps, when one message hits a plurality of strategies of a certain service system, the sampling bitmap corresponding to the strategy with the highest priority can only be selected as a global sampling bitmap according to the priority of each strategy, and then whether the message is output or not is determined according to the global sampling bitmap, but whether the message is output or not cannot be determined according to the sampling bitmaps of each strategy. Therefore, in the above message output method, when the same message is matched with a plurality of policies, it is not possible to output the message according to the sampling bitmaps corresponding to the respective policies, which is not good in sampling effect and poor in flexibility.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for outputting a packet to solve the problems of poor sampling effect and poor flexibility in the related art.
Specifically, the method is realized through the following technical scheme:
a message output method is applied to a shunt network device, and comprises the following steps:
matching the received message with each strategy in a preset strategy set, wherein each strategy in the preset strategy set comprises a rule and an action;
acquiring a policy identifier of at least one policy of which the rule is matched with the message and the corresponding action is sampling output;
determining whether to output the message according to the current zone bit of the sampling bitmap corresponding to the strategy identification of the at least one strategy;
and if the message is determined to be output, outputting the message through an output port corresponding to the strategy identifier of the at least one strategy in the corresponding relation between the strategy identifier and the output port.
A message output device is applied to a shunt network device, and comprises:
the matching module is used for matching the received message with each strategy in a preset strategy set, wherein each strategy in the preset strategy set comprises rules and actions;
the acquisition module is used for acquiring at least one strategy identifier of which the rule is matched with the message and the corresponding action is sampling output;
a determining module, configured to determine whether to output the packet according to a current flag of the sampling bitmap corresponding to the policy identifier of the at least one policy;
and the output module is used for outputting the message through the output port corresponding to the strategy identifier of the at least one strategy in the corresponding relation between the strategy identifier and the output port if the message is determined to be output.
An electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the above method steps when executing the program stored in the memory.
A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the above-mentioned method steps.
According to the technical scheme provided by the application, whether the message is output or not can be determined according to the sampling bitmap corresponding to each strategy when the same message is matched with a plurality of strategies, and compared with the related technology, the message is input without selecting the global sampling bitmap according to the strategy, so that the message output effect is better, and the flexibility is better.
Drawings
Fig. 1 is a flowchart of a message output method according to the present application;
fig. 2 is a schematic structural diagram of a message output device shown in the present application;
fig. 3 is a schematic structural diagram of an electronic device shown in 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 should 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" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.
In order to solve the above problem, embodiments of the present invention provide a message output method, so that a message output effect is better and flexibility is better. Referring to fig. 1, fig. 1 is a flowchart of a message output method shown in the present application, and is applied to a shunt network device.
S11: and matching the received message with each strategy in a preset strategy set.
After receiving the message, the shunt network device usually first determines the type of the message, where the currently commonly used message types are eth message, pos message, lldp message, and the like, and simultaneously obtains the quintuple information of the message, and then matches each policy in the preset policy set by using the quintuple information of the message. The quintuple information of the packet includes a source Internet Protocol (IP) address, a destination IP address, a source port, a destination port, and a Protocol.
S12: and acquiring the policy identifier of at least one policy which is in the matching of the rule by the message and the corresponding action of which is sampling output.
Each policy in the preset policy set includes a rule and an action, that is, only after the rule is hit in the packet, the corresponding action is performed. In the application, the action is concerned with sampling output, so that at least one policy in the rule matching process and the corresponding action is sampling output can be obtained, and a policy identifier can be allocated to each policy in advance, so that the policy identifier of at least one policy can be further obtained.
The policy identifier may be set according to actual needs.
S13: and determining whether to output the message according to the current zone bit of the sampling bitmap corresponding to the strategy identification of at least one strategy.
The sampling bitmap can be configured as a 128-bit sampling bitmap, and whether all received messages are output or not is determined according to the current flag bit in the sampling bitmap.
S14: and if the message is determined to be output, outputting the message through the output port corresponding to the strategy identifier of at least one strategy in the corresponding relation between the strategy identifier and the output port.
The corresponding relationship between the policy identifier and the output port may also be preset, that is, the output port corresponding to each policy identifier may be bound in advance, and after the message is determined to be output, the message may be output according to the output port corresponding to the policy identifier of at least one policy in the corresponding relationship between the policy identifier and the output port.
According to the technical scheme provided by the application, when the same message is matched with a plurality of strategies, whether the message is output or not can be determined according to the sampling bitmaps corresponding to the strategies, and compared with the related technology, the message is input without selecting the global sampling bitmaps from the sampling bitmaps, so that the message output effect is better, and the flexibility is better.
In a specific implementation manner, the determining whether to output the packet according to the current flag bit of the sampling bitmap corresponding to the policy identifier of the at least one policy in S13 specifically includes:
respectively reading sampling bitmaps corresponding to strategy identifications of at least one strategy from a preset storage space;
acquiring a current zone bit of a sampling bitmap corresponding to a strategy identifier of at least one strategy;
determining whether the current zone bit is a set value;
if the current zone bit is determined to be the set value, determining to output the message; and if the current zone bit is determined not to be the set value, determining not to output the message.
The sampling bitmap can be stored in a preset storage space, the preset storage space can be, but is not limited to, a Random Access Memory (RAM), the address of each storage unit of each preset storage space can be used as a policy identifier of the sampling bitmap corresponding to a policy, at present, 256 policy identifiers can be set at most, and need to be stored separately and counted separately, if 256 shift registers are used, a large amount of logic resources will be occupied, so that the sampling bitmap is implemented by using a 256X128 RAM, and resources are saved. The message is output to the corresponding service system in the following period, and if the current service system has 8 service systems, one message can hit 8 service systems at most, and when the 8 service systems are all hit, if one service system reads the RAM in series, other operations cannot be performed in the period, and only data return can be waited, so that the performance is seriously influenced; if 8 RAMs are set at the same time, the performance requirements can be met, but a large amount of resources are occupied. Therefore, comprehensive consideration can be given to setting 4 double-port RAMs, and two business systems use one RAM to read and write at the same time, thereby not only meeting the performance requirements, but also reducing the resource use.
When determining whether to output a message according to the current flag bit of the sampling bitmap corresponding to the policy identifier of at least one policy, the sampling bitmap stored in the storage unit with the policy identifier as an address may be acquired, and then, whether to output the message is determined according to the current flag bit of the sampling bitmap, where the flag bit of the sampling bitmap may be set to 0 or 1, and at this time, the message is output only at the position where the flag bit is 1.
For example, the following steps are carried out: the sampling bitmap is 128 bits, and if the sampling bitmap is 0x8000.. 00, only the first message is output when 128 messages are received; if the sampling bitmap is 0xa00.. 00, only the first and third packets are output every time 128 packets are received.
A specific implementation manner, the output port output packet corresponding to the policy identifier of at least one policy in the correspondence between the policy identifier and the output port in S14 specifically includes:
acquiring a corresponding relation between a strategy identifier and an output port;
searching an output port corresponding to the strategy identification of at least one strategy from the corresponding relation;
and outputting the message through the searched output port.
The policy identifier and the output port can be bound in advance and recorded in the corresponding relationship between the policy identifier and the output port, and then the message can be output through the output port corresponding to the policy identifier of at least one policy in the corresponding relationship between the policy identifier and the output port, so that the load balance of each output port can be better realized.
In an optional implementation manner, after determining whether to output a packet according to a current flag bit of a sampling bitmap corresponding to a policy identifier of at least one policy, the method further includes:
and shifting the sampling bitmap corresponding to the strategy identification of at least one strategy according to a set rule.
After determining whether to output the message according to the current flag bit of the sampling bitmap corresponding to the policy identifier of at least one policy, the sampling bitmap also needs to be updated to prepare for the next received message. The setting rule may be set according to actual needs, and for example, but not limited to, may be set to shift left by one bit or shift right by one bit.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a message output apparatus shown in the present application, which is applied to a shunt network device, and the apparatus includes:
a matching module 21, configured to match the received packet with each policy in a preset policy set, where each policy in the preset policy set includes a rule and an action;
an obtaining module 22, configured to obtain a policy identifier of at least one policy that is in the rule matching process and whose corresponding action is sampling output;
a determining module 23, configured to determine whether to output a packet according to a current flag of the sampling bitmap corresponding to the policy identifier of the at least one policy;
and the output module 24 is configured to output the packet through the output port corresponding to the policy identifier of at least one policy in the correspondence between the policy identifier and the output port if the output packet is determined.
According to the technical scheme provided by the application, when the same message is matched with a plurality of strategies, whether the message is output or not can be determined according to the sampling bitmaps corresponding to the strategies, and compared with the related technology, the message is input without selecting the global sampling bitmaps from the sampling bitmaps, so that the message output effect is better, and the flexibility is better.
In a specific implementation manner, the determining module 23 is configured to determine whether to output a packet according to a current flag of a sampling bitmap corresponding to a policy identifier of at least one policy, and specifically configured to:
respectively reading sampling bitmaps corresponding to strategy identifications of at least one strategy from a preset storage space;
acquiring a current zone bit of a sampling bitmap corresponding to a strategy identifier of at least one strategy;
determining whether the current zone bit is a set value;
if the current zone bit is determined to be the set value, determining to output the message; and if the current zone bit is determined not to be the set value, determining not to output the message.
In a specific embodiment, the output module 24 is configured to output a packet through an output port corresponding to a policy identifier of at least one policy in a correspondence between the policy identifier and the output port, and is specifically configured to:
acquiring a corresponding relation between a strategy identifier and an output port;
searching an output port corresponding to the strategy identification of at least one strategy from the corresponding relation;
and outputting the message through the searched output port.
In an alternative embodiment, the output module 24 is further configured to:
after determining whether to output the message according to the current flag bit of the sampling bitmap corresponding to the policy identifier of at least one policy, shifting the sampling bitmap corresponding to the policy identifier of at least one policy according to a set rule.
For the device embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment 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.
An electronic device is further provided in the embodiment of the present application, please refer to fig. 3, which includes a processor 310, a communication interface 320, a memory 330, and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 complete communication with each other through the communication bus 340.
A memory 330 for storing a computer program;
the processor 310 is configured to implement the message output method according to any of the above embodiments when executing the program stored in the memory 330.
The communication interface 320 is used for communication between the above-described electronic device and other devices.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
According to the technical scheme provided by the application, whether the message is output or not can be determined according to the sampling bitmap corresponding to each strategy when the same message is matched with a plurality of strategies, and compared with the related technology, the message is input without selecting the global sampling bitmap according to the strategy, so that the message output effect is better, and the flexibility is better.
Accordingly, an embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the computer is caused to execute the message output method in any of the foregoing embodiments.
According to the technical scheme provided by the application, whether the message is output or not can be determined according to the sampling bitmap corresponding to each strategy when the same message is matched with a plurality of strategies, and compared with the related technology, the message is input without selecting the global sampling bitmap according to the strategy, so that the message output effect is better, and the flexibility is better.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A message output method is applied to a shunt network device, and is characterized in that the method comprises the following steps:
matching the received message with each strategy in a preset strategy set, wherein each strategy in the preset strategy set comprises a rule and an action;
acquiring policy identifiers of a plurality of policies which are matched by the rule by the message and whose corresponding actions are sampling output;
determining whether to output the message according to the current zone bit of the sampling bitmap corresponding to the strategy identification of the strategy;
if the message is determined to be output, outputting the message through an output port corresponding to the strategy identifier of the strategy in the corresponding relation between the strategy identifier and the output port;
determining whether to output the message according to the current flag bit of the sampling bitmap corresponding to the policy identifier of the policy, specifically including:
respectively reading sampling bitmaps corresponding to the strategy identifications of the strategies from a preset storage space;
acquiring a current zone bit of a sampling bitmap corresponding to the strategy identification of the strategy;
determining whether the current flag bit is a set value;
if the current zone bit is determined to be the set value, determining to output the message; if the current zone bit is determined not to be the set value, determining not to output the message;
after determining whether to output the packet according to the current flag bit of the sampling bitmap corresponding to the policy identifier of the policy, the method further includes:
and shifting the sampling bitmap corresponding to the strategy identification of the strategy according to a set rule.
2. The method according to claim 1, wherein outputting the packet through an output port corresponding to the policy identifier of the policy in the correspondence between the policy identifier and the output port specifically includes:
acquiring a corresponding relation between a strategy identifier and an output port;
searching an output port corresponding to the strategy identification of the strategy from the corresponding relation;
and outputting the message through the searched output port.
3. A message output device is applied to a shunt network device, and is characterized in that the device comprises:
the matching module is used for matching the received message with each strategy in a preset strategy set, wherein each strategy in the preset strategy set comprises rules and actions;
the acquisition module is used for acquiring policy identifiers of a plurality of policies, wherein the policies are matched by the message, and corresponding actions are sampling output;
a determining module, configured to determine whether to output the packet according to a current flag of the sampling bitmap corresponding to the policy identifier of the policy;
the output module is used for outputting the message through an output port corresponding to the strategy identifier of the strategy in the corresponding relation between the strategy identifier and the output port if the message is determined to be output;
the determining module is configured to determine whether to output the packet according to a current flag of the sampling bitmap corresponding to the policy identifier of the policy, and specifically configured to:
respectively reading sampling bitmaps corresponding to the strategy identifications of the strategies from a preset storage space;
acquiring a current zone bit of a sampling bitmap corresponding to the strategy identification of the strategy;
determining whether the current flag bit is a set value;
if the current zone bit is determined to be the set value, determining to output the message; if the current zone bit is determined not to be the set value, determining not to output the message;
the output module is further configured to: and after determining whether the message is output or not according to the current flag bit of the sampling bitmap corresponding to the strategy identifier of the strategy, shifting the sampling bitmap corresponding to the strategy identifier of the strategy according to a set rule.
4. The apparatus according to claim 3, wherein the output module is configured to output the packet through an output port corresponding to the policy identifier of the policy in the correspondence between the policy identifier and the output port, and is specifically configured to:
acquiring a corresponding relation between a strategy identifier and an output port;
searching an output port corresponding to the strategy identification of the strategy from the corresponding relation;
and outputting the message through the searched output port.
5. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are used for completing mutual communication through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any one of claims 1-2 when executing a program stored on a memory.
6. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of the claims 1-2.
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| CN102571563A (en) * | 2011-12-19 | 2012-07-11 | 曙光信息产业(北京)有限公司 | Port bitmap-based hardware message sampling system and method for same |
| CN109981409A (en) * | 2019-03-26 | 2019-07-05 | 新华三技术有限公司 | Message forwarding method, device and forwarding device |
| CN110650023A (en) * | 2018-06-26 | 2020-01-03 | 中国移动通信有限公司研究院 | Policy rule processing method and device, functional network element and storage medium |
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| CN107409088B (en) * | 2015-05-15 | 2020-02-14 | 华为技术有限公司 | Data packet forwarding method and network equipment |
| CN109039914B (en) * | 2018-08-23 | 2020-11-27 | 迈普通信技术股份有限公司 | Message processing method and device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102571563A (en) * | 2011-12-19 | 2012-07-11 | 曙光信息产业(北京)有限公司 | Port bitmap-based hardware message sampling system and method for same |
| CN110650023A (en) * | 2018-06-26 | 2020-01-03 | 中国移动通信有限公司研究院 | Policy rule processing method and device, functional network element and storage medium |
| CN109981409A (en) * | 2019-03-26 | 2019-07-05 | 新华三技术有限公司 | Message forwarding method, device and forwarding device |
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