Method and device for operating network address translation mapping table
A technology of network address translation and operation method, applied in the field of operation method and device of network address translation mapping table, can solve the problems of low efficiency of data message forwarding and the like
Active Publication Date: 2020-01-03
NEUSOFT CORP
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[0005] In view of the above problems, the present invention provides a method and device for operating a network address translation mapping table to solve the problem of low data packet forwarding efficiency caused by operating a NAT mapping table in an existing multi-core system
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[0094] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0095] In order to solve the problem of low data packet forwarding efficiency caused by operating the NAT mapping table in the existing multi-core system, the embodiment of the present invention provides a method for operating the network address translation mapping table, as shown in figure 1 As shown, the method includes:
[0096] The embodiment of the present invention is based on the data forwarding system under the multi-core ...
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The invention discloses an operation method and device of a network address translation mapping table and belongs to the Internet technical field. With the operation method and device of the invention adopted, the problem of the low forwarding efficiency of data messages caused by operation on an NAT (network address translation) mapping table in an existing multi-core system can be solved. The method includes the following steps that: after a public network IP address corresponding to IP address to be translated is obtained, whether the number of table items in the NAT mapping table exceeds a preset threshold value is judged, wherein the NAT mapping table stores the corresponding relationship between the IP address to be translated and the public network IP address, wherein the corresponding relationship exists in the form of an table item, and table items are organized according to a least and nearest LRU (least recently used) chained list; and if the number of the table items in the NAT mapping table does not exceed the preset threshold value, whether locking updating is performed on the NAT mapping table is determined according to the location of a table item corresponding to the current IP address to be translated in the NAT mapping table. The operation method and device of the invention are applied to the process of operation on a network address translation table under a multi-core heterogeneous platform.
Description
technical field [0001] The invention relates to the technical field of the Internet, in particular to a method and device for operating a network address translation mapping table. Background technique [0002] In recent years, with the rapid development of the Internet, the number of hosts connected to the Internet has doubled. The length of the IP address in the fourth version of the IPv4 protocol of the Internet Protocol (Internet Protocol, IP) used for networking is 32 bits. Shortages have become one of the biggest problems facing the internet. [0003] To address the shortage of IP addresses, many solutions have been proposed. Among many solutions, Network Address Translation (NAT) technology has been widely used. The basic working principle of NAT is that when the IP packets communicated between the private network host and the public network host pass through the NAT gateway, multiple IP addresses to be converted in the IP packet are converted into a specified publi...
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IPC IPC(8): H04L29/12
CPCH04L61/2553
Inventor 刘健男党丽娜
Owner NEUSOFT CORP