CN110430172B - Internet protocol content restoration system and method based on dynamic session association technology - Google Patents
Internet protocol content restoration system and method based on dynamic session association technology Download PDFInfo
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- CN110430172B CN110430172B CN201910648194.9A CN201910648194A CN110430172B CN 110430172 B CN110430172 B CN 110430172B CN 201910648194 A CN201910648194 A CN 201910648194A CN 110430172 B CN110430172 B CN 110430172B
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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
- H04L47/2483—Traffic characterised by specific attributes, e.g. priority or QoS involving identification of individual flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
Abstract
The invention discloses an internet protocol content reduction system based on a dynamic session association technology, which comprises a data identification convergence layer and a protocol element reduction layer. The invention also discloses a corresponding method. The invention judges the flow, if the flow is control surface information, the protocol element reduction node reduces the data surface information corresponding to the control surface information, constructs dynamic ACL information by using the data surface information, and sends the dynamic ACL information to all data identification aggregation nodes. Therefore, the control plane and the data plane flow of one application can be ensured to be sent to the same protocol element reduction node for processing when the control plane and the data plane flow belong to different sessions, and the complete detailed list structure is ensured to be reduced. The invention can also ensure that the uplink flow and the downlink flow of one session which is distributed to different light distribution or mirror image ports due to asynchronous routing are sent to the same protocol element reduction node, and ensure that the reduced detailed list structure is complete.
Description
Technical Field
The invention relates to an internet protocol content reduction system and a method, in particular to an internet protocol content reduction system and a method based on a dynamic session association technology.
Background
With the wide application of the internet, a large amount of information is spread through the internet, and bad information in the internet seriously pollutes the internet environment, endangers public interests and even influences social stability. Content restoration and administration for internet protocols is therefore essential to maintain an internet environment. The traditional internet protocol content reduction system is a layer structure, namely a protocol identification reduction layer, and the protocol identification reduction layer comprises a plurality of protocol identification reduction nodes. The protocol identification reduction node receives the flow of the front-end light splitting or mirror image port, then performs protocol type identification and content reduction, and the reduced detailed list structure is stored in a database for subsequent analysis and display. For the situation that the uplink and downlink traffic of one session is dropped to different splitting or mirror ports due to asynchronous routing, the restoration result of the conventional internet protocol content restoration system may be incomplete, or even impossible to restore. In addition, the control plane and the data plane of some applications belong to different sessions, and the traditional internet protocol content restoration system has no way to correlate the restoration results. The reason is that the system architecture of the conventional internet protocol content reduction system adopts a layer structure, each protocol identification reduction node receives traffic from different light splitting or mirror ports, and an effective communication mechanism is also lacked among the protocol identification reduction nodes to realize the association of the traffic.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an Internet protocol content reduction system and method based on a dynamic session association technology, which can solve the technical problems that the reduction result is incomplete and cannot be associated in the prior art.
The technical scheme is as follows: the invention relates to an internet protocol content restoration system based on a dynamic session association technology, which comprises:
data identification convergence layer: comprises at least one data identification sink node; the data identification aggregation node is used for receiving the keep-alive messages sent by the protocol element reduction node and maintaining a protocol element reduction node list according to the keep-alive messages; the data identification aggregation node is also used for receiving the dynamic ACL message sent by the protocol element reduction node, receiving the flow sent by the light splitting or mirror image port, identifying the protocol type of the flow and sending the flow to the corresponding protocol element reduction node according to the identified protocol type;
protocol element reduction layer: comprises at least one protocol element restoring node; the protocol element reduction node is used for sending keep-alive messages to all the data identification aggregation nodes, the keep-alive messages comprise information of protocols which can be processed by the corresponding protocol element reduction node, in addition, the protocol element reduction node is also used for receiving flow sent by the data identification aggregation nodes and carrying out protocol element reduction on the flow: if the flow is control plane information, the protocol element reduction node reduces data plane information corresponding to the control plane information, constructs dynamic ACL information by using the data plane information and sends the dynamic ACL information to all data identification aggregation nodes; and if the flow is data plane information, the protocol element reduction node reduces a detailed list structure and sends the detailed list structure to a back-end database for storage and display.
Further, the dynamic ACL message includes data plane quintuple information, a data plane protocol type, and a communication address of the corresponding protocol element restoration node.
Further, the process of sending the traffic to the corresponding protocol element restoration node according to the identified protocol type is as follows: comparing the identified protocol type with the data plane protocol type in the dynamic ACL message: if the two are consistent, the flow is sent to a protocol element reduction node which sends the dynamic ACL message; and if the two types are not consistent, searching the identified protocol type in a protocol element reduction node list, finding out the protocol element reduction node corresponding to the identified protocol type, and then sending the flow to the protocol element reduction node corresponding to the identified protocol type.
Further, the process of sending the traffic to the corresponding protocol element restoration node according to the identified protocol type is as follows: and the data identification sink node performs load balancing calculation by adopting the binary information of the flow according to the identified protocol type to obtain a protocol element reduction node to which the flow needs to be sent, and then sends the flow to the protocol element reduction node.
Further, the protocol element reduction node list includes information of each protocol and information of a protocol element reduction node corresponding to each protocol.
The invention relates to an internet protocol content reduction method based on a dynamic session association technology, which comprises the following steps:
the data identification aggregation node receives the keep-alive message sent by the protocol element reduction node and maintains a protocol element reduction node list according to the keep-alive message;
a step that a data identification aggregation node receives a dynamic ACL message sent by a protocol element reduction node;
the data identification aggregation node receives the flow sent by the light splitting or mirror image port, identifies the protocol type of the flow, and sends the flow to the corresponding protocol element restoration node according to the identified protocol type;
a step that the protocol element reduction node sends a keep-alive message to all the data identification aggregation nodes; the keep-alive message comprises information of a protocol which can be processed by the corresponding protocol element recovery node;
the protocol element reduction node receives the flow sent by the data identification aggregation node and carries out the protocol element reduction on the flow, and the method comprises the following steps: if the flow is control plane information, the protocol element reduction node reduces data plane information corresponding to the control plane information, constructs dynamic ACL information by using the data plane information and sends the dynamic ACL information to all data identification aggregation nodes; and if the flow is data plane information, the protocol element reduction node reduces a detailed list structure and sends the detailed list structure to a back-end database for storage and display.
Further, the dynamic ACL message includes data plane quintuple information, a data plane protocol type, and a communication address of the corresponding protocol element restoration node.
Further, the process of sending the traffic to the corresponding protocol element restoration node according to the identified protocol type is as follows: comparing the identified protocol type with the data plane protocol type in the dynamic ACL message: if the two are consistent, the flow is sent to a protocol element reduction node which sends the dynamic ACL message; and if the two types are not consistent, searching the identified protocol type in a protocol element reduction node list, finding out the protocol element reduction node corresponding to the identified protocol type, and then sending the flow to the protocol element reduction node corresponding to the identified protocol type.
Further, the process of sending the traffic to the corresponding protocol element restoration node according to the identified protocol type is as follows: and the data identification sink node performs load balancing calculation by adopting the binary information of the flow according to the identified protocol type to obtain a protocol element reduction node to which the flow needs to be sent, and then sends the flow to the protocol element reduction node.
Further, the protocol element reduction node list includes information of each protocol and information of a protocol element reduction node corresponding to each protocol.
Has the advantages that: the invention discloses an internet protocol content recovery system and method based on dynamic session association technology, compared with the prior art, the system and method have the following beneficial effects:
1) the invention judges the flow in the process of carrying out protocol element reduction on the flow, if the flow is control surface information, the protocol element reduction node reduces data surface information corresponding to the control surface information, constructs dynamic ACL information by using the data surface information, and sends the dynamic ACL information to all data identification aggregation nodes. Therefore, the control plane and the data plane flow of one application can be ensured to be sent to the same protocol element reduction node for processing when the control plane and the data plane flow belong to different sessions, and the complete detailed list structure is ensured to be reduced.
2) In the invention, the binary information of the flow is adopted to carry out load balancing calculation to obtain the protocol element reduction node to which the flow needs to be sent, and then the flow is sent to the protocol element reduction node. Therefore, the uplink flow and the downlink flow of one session which are distributed to different light distribution or mirror image ports due to asynchronous routing can be sent to the same protocol element reduction node, and the complete detailed list structure is ensured.
3) In the invention, the data identification aggregation node sends the flow to the corresponding protocol element reduction node according to the identified protocol type. Therefore, the number of the protocol element reduction nodes supporting the processing of each protocol is adjusted according to the condition of the protocols in the Internet, and the resource utilization rate is maximized.
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FIG. 1 is a schematic diagram of a system in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system in example 1 according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a system in example 2 according to an embodiment of the present invention.
Detailed Description
The present embodiment discloses an internet protocol content restoring system based on a dynamic session association technology, as shown in fig. 1, including:
data identification convergence layer: comprises at least one data identification sink node; the data identification aggregation node is used for receiving the keep-alive messages sent by the protocol element reduction node and maintaining a protocol element reduction node list according to the keep-alive messages; the data identification aggregation node is also used for receiving the dynamic ACL message sent by the protocol element reduction node, receiving the flow sent by the light splitting or mirror image port, identifying the protocol type of the flow and sending the flow to the corresponding protocol element reduction node according to the identified protocol type;
protocol element reduction layer: comprises at least one protocol element restoring node; the protocol element reduction node is used for sending keep-alive messages to all the data identification aggregation nodes, the keep-alive messages comprise information of protocols which can be processed by the corresponding protocol element reduction node, in addition, the protocol element reduction node is also used for receiving flow sent by the data identification aggregation nodes and carrying out protocol element reduction on the flow: if the flow is control plane information, the protocol element reduction node reduces data plane information corresponding to the control plane information, constructs dynamic ACL information by using the data plane information and sends the dynamic ACL information to all data identification aggregation nodes; and if the flow is data plane information, the protocol element reduction node reduces a detailed list structure and sends the detailed list structure to a back-end database for storage and display.
The dynamic ACL message comprises data plane quintuple information, a data plane protocol type and a communication address of a corresponding protocol element reduction node. The protocol element reduction node list includes information of each protocol and information of a protocol element reduction node corresponding to each protocol.
The process of sending the traffic to the corresponding protocol element restoring node according to the identified protocol type may be: comparing the identified protocol type with the data plane protocol type in the dynamic ACL message: if the two are consistent, the flow is sent to a protocol element reduction node which sends the dynamic ACL message; and if the two types are not consistent, searching the identified protocol type in a protocol element reduction node list, finding out the protocol element reduction node corresponding to the identified protocol type, and then sending the flow to the protocol element reduction node corresponding to the identified protocol type.
The process of sending the traffic to the corresponding protocol element restoration node according to the identified protocol type may also be: and the data identification sink node performs load balancing calculation by adopting the binary information of the flow according to the identified protocol type to obtain a protocol element reduction node to which the flow needs to be sent, and then sends the flow to the protocol element reduction node.
The specific implementation mode also discloses an internet protocol content reduction method based on the dynamic session association technology, which comprises the following steps:
the data identification aggregation node receives the keep-alive message sent by the protocol element reduction node and maintains a protocol element reduction node list according to the keep-alive message;
a step that a data identification aggregation node receives a dynamic ACL message sent by a protocol element reduction node;
the data identification aggregation node receives the flow sent by the light splitting or mirror image port, identifies the protocol type of the flow, and sends the flow to the corresponding protocol element restoration node according to the identified protocol type;
a step that the protocol element reduction node sends a keep-alive message to all the data identification aggregation nodes; the keep-alive message comprises information of a protocol which can be processed by the corresponding protocol element recovery node;
the protocol element reduction node receives the flow sent by the data identification aggregation node and carries out the protocol element reduction on the flow, and the method comprises the following steps: if the flow is control plane information, the protocol element reduction node reduces data plane information corresponding to the control plane information, constructs dynamic ACL information by using the data plane information and sends the dynamic ACL information to all data identification aggregation nodes; and if the flow is data plane information, the protocol element reduction node reduces a detailed list structure and sends the detailed list structure to a back-end database for storage and display.
The dynamic ACL message comprises data plane quintuple information, a data plane protocol type and a communication address of a corresponding protocol element reduction node. The protocol element reduction node list includes information of each protocol and information of a protocol element reduction node corresponding to each protocol.
The process of sending the traffic to the corresponding protocol element restoring node according to the identified protocol type may be: comparing the identified protocol type with the data plane protocol type in the dynamic ACL message: if the two are consistent, the flow is sent to a protocol element reduction node which sends the dynamic ACL message; and if the two types are not consistent, searching the identified protocol type in a protocol element reduction node list, finding out the protocol element reduction node corresponding to the identified protocol type, and then sending the flow to the protocol element reduction node corresponding to the identified protocol type.
The process of sending the traffic to the corresponding protocol element restoration node according to the identified protocol type may also be: and the data identification sink node performs load balancing calculation by adopting the binary information of the flow according to the identified protocol type to obtain a protocol element reduction node to which the flow needs to be sent, and then sends the flow to the protocol element reduction node.
The system is further described below in two embodiments.
Example 1:
in this embodiment, there are two splitting or mirroring ports, as shown in fig. 2, a first splitting or mirroring port 111 and a second splitting or mirroring port 112, respectively. The system includes a data recognition convergence layer 12 and a protocol element restoration layer 13. The data identification aggregation layer 12 includes two data identification aggregation nodes, which are a first data identification aggregation node 121 and a second data identification aggregation node 122, respectively. The protocol element restoration layer 13 includes three protocol element restoration nodes, which are a first protocol element restoration node 131, a second protocol element restoration node 132, and a third protocol element restoration node 133, respectively. The first protocol element restoring node 131 can process the HTTP protocol, the second protocol element restoring node 132 can process the HTTP protocol, the SIP protocol, and the RTP protocol, and the third protocol element restoring node 133 can process the SIP protocol and the RTP protocol.
The three protocol element reduction nodes respectively send keep-alive messages to all the data identification aggregation nodes, the keep-alive messages comprise information of protocols which can be processed by the corresponding protocol element reduction nodes, namely, the keep-alive messages sent to all the data identification aggregation nodes by the first protocol element reduction node 131 comprise HTTP protocols, the keep-alive messages sent to all the data identification aggregation nodes by the second protocol element reduction node 132 comprise HTTP protocols, SIP protocols and RTP protocols, and the keep-alive messages sent to all the data identification aggregation nodes by the third protocol element reduction node 133 comprise SIP protocols and RTP protocols.
Each data identification aggregation node can receive the keep-alive messages sent by the three protocol element reduction nodes and maintain a protocol element reduction node list according to the keep-alive messages. The protocol element reduction node list includes information of each protocol and information of a protocol element reduction node corresponding to each protocol, that is, the protocol element reduction node list indicates that the protocol element reduction node capable of processing the HTTP protocol includes a first protocol element reduction node 131 and a second protocol element reduction node 132, the protocol element reduction node capable of processing the SIP protocol includes a second protocol element reduction node 132 and a third protocol element reduction node 133, and the protocol element reduction node capable of processing the RTP protocol includes a second protocol element reduction node 132 and a third protocol element reduction node 133.
The first data identification aggregation node 121 receives the uplink traffic of the first session sent from the first light splitting or mirror image port 111, finds that the uplink traffic is an HTTP protocol after the protocol type identification, and obtains that the uplink traffic of the first session needs to be sent to the first protocol element restoring node 131 after performing load balancing calculation by using the binary information of the first session according to the protocol element restoring node list, so that the first data identification aggregation node 121 sends the uplink traffic of the first session to the first protocol element restoring node 131.
The second data identification aggregation node 122 receives the downlink traffic of the first session sent from the second light splitting or mirror image port 112, finds that the downlink traffic is an HTTP protocol after the protocol type identification, and obtains that the downlink traffic of the first session needs to be sent to the first protocol element restoring node 131 after performing load balancing calculation by using the binary information of the first session according to the protocol element restoring node list, so that the second data identification aggregation node 122 sends the downlink traffic of the first session to the first protocol element restoring node 131.
The first protocol element reduction node 131 receives the uplink traffic and the downlink traffic of the first session, combines them into a complete session, reduces the protocol elements, reduces the detailed list structure, and sends the detailed list structure to the back-end database 14 for storage and display. Therefore, when the uplink and downlink traffic of one session caused by asynchronous routing is respectively delivered to different light splitting or mirror image ports, the uplink and downlink traffic of the session can still be sent to the same protocol element reduction node for processing, and a foundation is provided for the integrity of the reduction result.
In addition, if the research finds that the flow rate of the HTTP protocol in the Internet is large and the pressure of the two protocol element reduction nodes for processing the HTTP protocol is large, the protocol element reduction nodes for processing the HTTP protocol can be increased in a proper amount. The use of the load balancing mechanism of the binary group can ensure that the processing tasks of the recovery nodes of the protocol elements are balanced as much as possible on the basis of the homologization and homologization.
Example 2:
in this embodiment, there are two split or mirror ports, as shown in fig. 3, a first split or mirror port 211 and a second split or mirror port 212. The system includes a data recognition convergence layer 22 and a protocol element restoration layer 23. The data identification convergence layer 22 includes two data identification convergence nodes, which are a first data identification convergence node 221 and a second data identification convergence node 222, respectively. The protocol element restoration layer 23 includes three protocol element restoration nodes, which are a first protocol element restoration node 231, a second protocol element restoration node 232, and a third protocol element restoration node 233. The first protocol element restoring node 231 can process the HTTP protocol, the second protocol element restoring node 232 can process the HTTP protocol, the SIP protocol, and the RTP protocol, and the third protocol element restoring node 233 can process the SIP protocol and the RTP protocol.
The three protocol element reduction nodes respectively send keep-alive messages to all the data identification aggregation nodes, the process of sending the keep-alive messages is not shown in fig. 3, the keep-alive messages comprise information of protocols which can be processed by the corresponding protocol element reduction nodes, that is, the keep-alive messages sent to all the data identification aggregation nodes by the first protocol element reduction node 231 comprise HTTP protocols, the keep-alive messages sent to all the data identification aggregation nodes by the second protocol element reduction node 232 comprise HTTP protocols, SIP protocols and RTP protocols, and the keep-alive messages sent to all the data identification aggregation nodes by the third protocol element reduction node 233 comprise SIP protocols and RTP protocols.
Each data identification aggregation node can receive the keep-alive messages sent by the three protocol element reduction nodes and maintain a protocol element reduction node list according to the keep-alive messages. The protocol element restoring node list includes information of each protocol and information of a protocol element restoring node corresponding to each protocol, that is, the protocol element restoring node list indicates that the protocol element restoring node capable of processing the HTTP protocol includes a first protocol element restoring node 231 and a second protocol element restoring node 232, the protocol element restoring node capable of processing the SIP protocol includes a second protocol element restoring node 232 and a third protocol element restoring node 233, and the protocol element restoring node capable of processing the RTP protocol includes a second protocol element restoring node 232 and a third protocol element restoring node 233.
The first data identification aggregation node 221 receives the traffic of the second session sent from the first light splitting or mirror image port 211, finds that the traffic is an SIP protocol after protocol type identification, performs load balancing calculation by using binary information of the second session according to the protocol element restoring node list, and assumes that the obtained result is that the traffic of the second session needs to be sent to the third protocol element restoring node 233, and the first data identification aggregation node 221 sends the traffic of the second session to the third protocol element restoring node 233.
After receiving the traffic of the second session, the third protocol element reduction node 233 performs protocol element reduction according to the protocol standard specification of the SIP protocol, and reduces the data plane quintuple information and the data plane protocol type RTP from the SIP protocol, and the third protocol element reduction node 233 constructs a dynamic ACL message, where the dynamic ACL message includes the reduced data plane quintuple information, the data plane protocol type RTP, and the communication address of the third protocol element reduction node 233. And then, sending the dynamic ACL message to all data identification aggregation nodes, and sending information such as an account number and the like restored from the SIP protocol to an RTP protocol processing thread in the nodes for storage.
After each data identification aggregation node receives the dynamic ACL message sent by the third protocol element reduction node 233, the data plane quintuple information, the data plane protocol type RTP and the communication address of the third protocol element reduction node 233 in the dynamic ACL message are stored.
The second data identification aggregation node 222 receives the traffic of the third session sent from the second light splitting or mirroring port 212, and finds that the protocol type of the traffic of the third session is the same as the data plane protocol type in the dynamic ACL message and is an RTP protocol in the process of matching with the dynamic ACL message sent from the third protocol element restoring node 233, so that the second data identification aggregation node 222 sends the traffic of the third session to the third protocol element restoring node 233 according to the communication address of the third protocol element restoring node 233 included in the dynamic ACL message.
After receiving the traffic of the third session, the third protocol element reduction node 233 reduces the protocol element, forms a complete detailed list structure in combination with the information such as the account number and the like sent in the SIP protocol element reduction process, and then sends the detailed list structure to the back-end database 24 for storage and display. Therefore, when control plane and data plane traffic of some applications are respectively delivered to different light splitting or mirror image ports, the control plane and data plane traffic of the protocol can still be sent to the same protocol element reduction node for processing, and a foundation is provided for the integrity of the reduction result.
Claims (8)
1. The Internet protocol content restoration system based on the dynamic session association technology is characterized in that: the method comprises the following steps:
data identification convergence layer: comprises at least one data identification sink node; the data identification aggregation node is used for receiving the keep-alive messages sent by the protocol element reduction node and maintaining a protocol element reduction node list according to the keep-alive messages; the data identification aggregation node is also used for receiving the dynamic ACL message sent by the protocol element reduction node, receiving the flow sent by the light splitting or mirror image port, identifying the protocol type of the flow and sending the flow to the corresponding protocol element reduction node according to the identified protocol type;
protocol element reduction layer: comprises at least one protocol element restoring node; the protocol element reduction node is used for sending keep-alive messages to all the data identification aggregation nodes, the keep-alive messages comprise information of protocols which can be processed by the corresponding protocol element reduction node, in addition, the protocol element reduction node is also used for receiving flow sent by the data identification aggregation nodes and carrying out protocol element reduction on the flow: if the flow is control plane information, the protocol element reduction node reduces data plane information corresponding to the control plane information, constructs dynamic ACL information by using the data plane information and sends the dynamic ACL information to all data identification aggregation nodes; if the flow is data plane information, the protocol element reduction node reduces a detailed list structure and sends the detailed list structure to a back-end database for storage and display;
the dynamic ACL message contains data plane quintuple information, a data plane protocol type and a communication address of a corresponding protocol element reduction node.
2. The system for internet protocol content restoration based on dynamic session association technology as claimed in claim 1, wherein: the process of sending the flow to the corresponding protocol element restoring node according to the identified protocol type is as follows: comparing the identified protocol type with the data plane protocol type in the dynamic ACL message: if the two are consistent, the flow is sent to a protocol element reduction node which sends the dynamic ACL message; and if the two types are not consistent, searching the identified protocol type in a protocol element reduction node list, finding out the protocol element reduction node corresponding to the identified protocol type, and then sending the flow to the protocol element reduction node corresponding to the identified protocol type.
3. The system for internet protocol content restoration based on dynamic session association technology as claimed in claim 1, wherein: the process of sending the flow to the corresponding protocol element restoring node according to the identified protocol type is as follows: and the data identification sink node performs load balancing calculation by adopting the binary information of the flow according to the identified protocol type to obtain a protocol element reduction node to which the flow needs to be sent, and then sends the flow to the protocol element reduction node.
4. The system for internet protocol content restoration based on dynamic session association technology as claimed in claim 1, wherein: the protocol element reduction node list comprises information of each protocol and information of the protocol element reduction node corresponding to each protocol.
5. The Internet protocol content restoration method based on the dynamic session association technology is characterized by comprising the following steps: the method comprises the following steps:
the data identification aggregation node receives the keep-alive message sent by the protocol element reduction node and maintains a protocol element reduction node list according to the keep-alive message;
a step that a data identification aggregation node receives a dynamic ACL message sent by a protocol element reduction node;
the data identification aggregation node receives the flow sent by the light splitting or mirror image port, identifies the protocol type of the flow, and sends the flow to the corresponding protocol element restoration node according to the identified protocol type;
a step that the protocol element reduction node sends a keep-alive message to all the data identification aggregation nodes; the keep-alive message comprises information of a protocol which can be processed by the corresponding protocol element recovery node;
the protocol element reduction node receives the flow sent by the data identification aggregation node and carries out the protocol element reduction on the flow, and the method comprises the following steps: if the flow is control plane information, the protocol element reduction node reduces data plane information corresponding to the control plane information, constructs dynamic ACL information by using the data plane information and sends the dynamic ACL information to all data identification aggregation nodes; if the flow is data plane information, the protocol element reduction node reduces a detailed list structure and sends the detailed list structure to a back-end database for storage and display;
the dynamic ACL message contains data plane quintuple information, a data plane protocol type and a communication address of a corresponding protocol element reduction node.
6. The method for restoring internet protocol contents based on dynamic session association technology as claimed in claim 5, wherein: the process of sending the flow to the corresponding protocol element restoring node according to the identified protocol type is as follows: comparing the identified protocol type with the data plane protocol type in the dynamic ACL message: if the two are consistent, the flow is sent to a protocol element reduction node which sends the dynamic ACL message; and if the two types are not consistent, searching the identified protocol type in a protocol element reduction node list, finding out the protocol element reduction node corresponding to the identified protocol type, and then sending the flow to the protocol element reduction node corresponding to the identified protocol type.
7. The method for restoring internet protocol contents based on dynamic session association technology as claimed in claim 5, wherein: the protocol element reduction node list comprises information of each protocol and information of the protocol element reduction node corresponding to each protocol.
8. The method for restoring internet protocol contents based on dynamic session association technology as claimed in claim 5, wherein: the process of sending the flow to the corresponding protocol element restoring node according to the identified protocol type is as follows: and the data identification sink node performs load balancing calculation by adopting the binary information of the flow according to the identified protocol type to obtain a protocol element reduction node to which the flow needs to be sent, and then sends the flow to the protocol element reduction node.
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