A method and system to realize gateway dynamic load sharing

Abstract

The invention relates to a method and a system of realizing sharing of gateway dynamic load. The arrangement of a plurality of new virtual MAC addresses in the same virtual backup group which is provided with a plurality of gate way devices assures that main equipment can forward the data message to an external network server by different gate way devices so as to realize the function of sharing gateway dynamic load. Aiming at the problems that the gate way backup and load sharing can increase network management load in the prior art, network bandwidth load and gate way device load, the invention provides the method and system of realizing sharing of gateway dynamic load. The invention simplifies the user configuration management, reduces occupation of network bandwidth caused by data transmission and improves the forwarding performance of the gate way device.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and system for realizing gateway dynamic load sharing. Background technique [0002] As shown in Figure 1A, it is a schematic diagram of the existing LAN network structure. The LAN accesses the external network through a unique gateway. The network structure mainly includes: host device 1, host device 2, gateway device 4 and external network server 3, the LAN The host device 1 and the host device 2 (or more hosts) in the local area network access the external network server 3 through the unique gateway device 4, and realize the communication between the host device 1, the host device 2 and the external network server 3 in the local area network, specifically The process is as follows: [0003] Firstly, the Internet Protocol (Internet Protocol, hereinafter referred to as: IP) address and the gateway routing table of the gateway device 4 must be configured, and the ...

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Problems solved by technology

[0013] The above solution can realize the load sharing function, and can reduce the network management burden of users, and fully and effectively utilize network device resources and bandwidth; but for medium and large LANs, the main gateway device needs to maintain information lists on all host devices (including corresponding distribution results) and notify the backup gateway device through the load sharing notification message. When the information list of the master device changes, the master gateway device also needs to notify the outside world, which will increase the burden on the network bandwidth and the master gateway device , at the same time, the primary / backup gateway device needs to filter the data packets to be forwarded through the host device information on it, reducing its forwarding performance

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