A network address conversion method and system based on priority queue

Abstract

The invention discloses a method and a system for network address translation based on priority queue. The method comprises the steps that: firstly, a NAT service processing unit divides the received data massages needing to be NAT processed into multiple queues having different priorities, and sends the data massages having different priorities to corresponding queues of a CPU queue unit, wherein the data massages meet the NAP processing condition; secondly, a queue reading unit reads the data massages of the highest-priority queue in the CPU queue unit, the data massages is upward sent and network address translated, until the data massages of the highest-priority queue is empty, then the data massages of the next priority queue is read, upward sent and network address translated, the process is the same for other data massages. The invention improves the way of sending data massages upward, better guarantees the upward sending of high-priority data massages and generation of corresponding NAT converting item information, as well as application of high-priority users.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a priority queue-based network address conversion method and system. Background technique [0002] By using NAT (Network Address Translation) technology, an organization can reuse one or more registered globally unique IP addresses, which can alleviate the pressure of insufficient Internet IP addresses to a certain extent. [0003] figure 1 It is a traditional NAT function realization method. [0004] Data packet forwarding unit 101: the data packet forwarding unit 101 receives the input original data message 107, and performs corresponding business processing and routing and forwarding functions; for the data message that needs to be processed by NAT, it is sent to the NAT business processing unit 102; [0005] NAT service processing unit 102: the NAT service processing unit 102 receives the original data message 107 that needs to be processed by NAT from the packet forwardi...

AI Technical Summary

Problems solved by technology

[0013] In this traditional network address translation implementation, there is one biggest defect: the data packets sent are not prioritized, and when the buffer space of the CPU queue is insufficient, it will not be able to satisfy the needs of important users or important data packets in real time. NAT processing

The result of this is that some high-priority users cannot connect due to the congestion of low-priority users when accessing the external network

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