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Method and device for sharing loads between NAT gateway devices

A gateway device and load sharing technology, applied in the field of communication, can solve problems such as inability to share pressure, inability to dynamically adjust link rate, idle equipment to share forwarding pressure, etc., and achieve the effect of dynamic load sharing

Inactive Publication Date: 2011-11-16
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the NAT entry pressure of a certain device is high, the rest of the idle devices cannot share the forwarding pressure for it.
[0014] Second, the export rate of the equipment is different
[0019] Existing technologies can only use routing to achieve load sharing, but cannot dynamically adjust according to the load of the device itself and the link rate
[0020] In addition, under the backup scheme, the backup device can perform network management duties only after the main device fails, and cannot share the pressure when the main device has a high load.

Method used

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  • Method and device for sharing loads between NAT gateway devices
  • Method and device for sharing loads between NAT gateway devices
  • Method and device for sharing loads between NAT gateway devices

Examples

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Embodiment Construction

[0064] As mentioned in the background art, due to the equivalent processing of each path, the NAT gateway device cannot perform dynamic load sharing according to its own performance pressure and uplink rate, thus affecting the performance of each device.

[0065] In order to solve the above problems, the present invention proposes a load sharing method between NAT gateway devices, which is applied to a system including multiple NAT gateway devices, and the multiple NAT gateway devices are neighbor devices to each other.

[0066] Such as figure 2 As shown, it is a schematic flow diagram of a load sharing method between NAT gateway devices proposed by the present invention, which specifically includes the following steps:

[0067] Step S201 , each NAT gateway device detects the usage of its own NAT entry according to a preset detection period, and sends the detection result to other NAT gateway devices.

[0068] It should be pointed out that the implementation of the above ste...

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Abstract

The invention discloses a method and a device for sharing loads between NAT gateway devices, which realize the dynamic load sharing between the NAT gateway devices by regularly detecting the actual load of the device and the uplink bandwidth, and adjusting three layers of forwarding tables of an access router according to NAT forwarding table items between dynamic synchronous NAT gateways of the actual forwarding conditions in a mode of routing update.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for load sharing between NAT gateway devices. Background technique [0002] Network Address Translation (NAT, Network Address Translation) technology is a technology for accessing a wide area network (WAN). It is a conversion technology for converting private (reserved) addresses into legal IP addresses. It is widely used in various types of Internet ) access methods and various types of networks. It not only perfectly solves the problem of insufficient Internet Protocol (IP) addresses, but also effectively avoids attacks from outside the network, and hides and protects computers inside the network. [0003] With the rapid increase in the number of computers connected to the Internet, IP address resources are increasingly stretched. In fact, except for China Education and Research NETwork (CERNET), general users can hardly apply for the entire class C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/66H04L12/803
Inventor 沈岭王军
Owner NEW H3C TECH CO LTD