Network connection tracing method and system thereof
A network connection and connection tracking technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as increased operating costs, new entries that cannot be found for new connections, and occupation of connection tracking tables
Active Publication Date: 2011-08-31
BEIJINGNETENTSEC
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Problems solved by technology
[0007] The main problems in network connection tracking at present are: 1. Many meaningless connections occupy the connection tracking table; 2. As the size of the connection tracking table becomes larger, for normal data packets, the operation cost of finding the corresponding connection table item increases 3. Under the constraint of a certain number of total connections, the probability that a new connection cannot find an available new entry increases
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[0027] In order to minimize the limited network resources occupied by invalid connections or meaningless connections, the present invention provides a network connection tracking method and system thereof. Next, the network connection tracking method and system thereof will be described in detail, wherein a data packet (Packet) is denoted as P, its corresponding connection (connection) is denoted as C, and its migration confirmation condition (Confirm Condition) is denoted as CC.
[0028] figure 2 It shows the connection tracking structure diagram of the present invention. Such as figure 2 As shown, replace the two-level connection tracking tables T1 and T2 as figure 1 The single-level connection tracking table T0 shown. After the data packet P of the new connection C is transmitted, it first maintains the state in the table T1 that handles the unconfirmed connection. Table T2.
[0029] Then, in the table T2 that processes the confirmed connection, the subsequent proces...
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The invention discloses a network connection tracing method and a system thereof, and the method comprises a connection tracing logic consisting of a table for processing unconfirmed connections and a table for processing confirmed connections. The tracing method comprises the following steps: judging whether the unconfirmed connection satisfies confirmation conditions; transferring the connection into the table for processing the confirmed connection if the connection satisfies the conditions; carrying out protocol stack consequent processing on the connections in the table for processing the confirmed connection in turn. The invention adopts a two-level connection tracing table structure to minimize network resources occupied by invalid connections or meaningless connections, and distinguishes data packets in advance so as to trace connection status thereof.
Description
technical field [0001] The invention relates to a network connection tracking method and system thereof. Background technique [0002] Any network connection is inseparable from the role of the protocol stack. A connection is the transfer of at least one data packet from a sender to a destination. In the middle, it is first necessary to create an entry in the connection table that is easy to track and maintain, to associate the data packet with the connection, and then go through the conversion of the protocol stack. [0003] If any network management device needs to support connection-based control, it needs to maintain connection information, that is, to track the connection of the data packet, so as to associate the data packet with the connection to which it belongs, so as to control the data packet at the connection level. [0004] figure 1 A prior art connection tracking structure diagram is shown. Such as figure 1 As shown, the T0 table is a single-level connecti...
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IPC IPC(8): H04L12/24H04L29/08
Inventor 米嘉梁志勇陶涛刘林周知远陈鑫
Owner BEIJINGNETENTSEC