Network load balancing networking method, network load balancing networking equipment and network load balancing networking system

Abstract

The invention provides a network load balancing networking method, network load balancing networking equipment and a network load balancing networking system. The method comprises the following steps: after receiving a service requesting message which is transmitted by a client and points to a trunking server group, routing the service requesting message to a target port mapped by the trunking server group, wherein the target port and the trunking server group belong to an identical VLAN; according to the preset port loop function of the target port, re-forwarding the service requesting message received by the target port to the target port per se; and broadcasting the service requesting message routed and returned by the target port in the VLAN where the target port belongs, so that all servers in the trunking server group can receive the service requesting message through corresponding ports. Through the method, the equipment and the system, on the premise that the trunking servers directly perform data exchange with a client terminal through a third-layer switch without connecting a second-layer switch, the function of an NLB service is achieved, the second-layer switch is saved for a user and simultaneously networking reliability is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a networking method, equipment and system for network load balancing. Background technique [0002] Network Load Balancing (NLB for short) is a load balancing technology that reasonably distributes data traffic from the network to multiple servers to maximize the use of all server resources. In NLB, two or more computer resources are combined into a cluster server, and all computers in the cluster server are allowed to use the same NLB IP address, so that multiple computers can provide a service together, which is equivalent to One server, improving the scalability and availability of the service. At the same time, when a computer in the cluster server fails or goes offline, NLB can automatically redistribute the load to other computers in the cluster, thereby ensuring the performance and reliability required by mission-critical servers. [0003] figure 1 It is a schemat...

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Problems solved by technology

[0005] However, this method has the following defects: a two-layer switch is set between the cluster server group and the client, so for the data message exchanged between the two, it needs to go through two layers of data exchange processing to reach the opposite end. Undoubtedly, the security and reliability of the data message and the networking itself are reduced

Especially for a layer-3 switch, the data transmission mechanism of a layer-2 switch already exists internally, but due to the functional limitation of the layer-3 switch itself: corresponding to a destination IP address, the destination port in the layer-3 switch can only There is one, so that if a layer-3 switch is directly connected between the cluster server and the client, the client packets received by the layer-3 switch cannot be routed to multiple ports, and thus the NLB service cannot be implemented normally

Therefore, in the existing networking mode of NLB service, the Layer 2 switch is essentially a redundant device set between the cluster server group and the client, which reduces the reliability of the networking to a certain extent.

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