Load balancing method and device
A load balancing and purpose technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems affecting users, load balancing equipment unavailable, equipment performance bottlenecks, etc., to reduce maintenance work frequency, reduce burden, and maintain The effect of cost increases
Active Publication Date: 2012-10-31
NEW H3C TECH CO LTD
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Problems solved by technology
Therefore, in this case, the load balancing device will process a large number of detection packets at the same time, which will directly cause a bottleneck in the performance of the device and affect the sending of the user's actual business packets. In a more serious situation, the load balancing device may be completely unavailable.
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[0020] The invention integrates the advantages of the static table and the dynamic detection, avoids the inherent defects of the two, and achieves a better balance between the detection effect and the service performance of the load balancing device. A preferred embodiment of the present invention is described below in conjunction with a flow chart and a structural diagram.
[0021] Please refer to image 3 , taking computer software implementation as an example, the load balancing device of the present invention is applied to network equipment, and the load balancing device includes a first query unit, a second query unit and a detection unit. Wherein, the first query unit is mainly responsible for querying the dynamic detection table, the second query unit is responsible for querying the ISP address table, and the detection unit is mainly used for maintaining the dynamic detection table. The load balancing device is a logical device, and the hardware structure of the networ...
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The invention provides a load balancing device and method applied on a network device. The processing flow comprises the following steps of: (A) receiving a message, then inquiring whether a destination IP (Internet protocol) address of the message has a corresponding table item in a dynamic detection table or not, if so, getting an ISP (Internet service provider) link corresponding to the destination IP address from the dynamic detection table, and otherwise, turning to the step (B); (B) inquring the ISP link corresponding to the destination IP address of the message in an preset ISP address table, taking the inquired ISP link as the current ISP link and turning to the step (C); and (C) sending the detected message from the current ISP link to the destination IP address, checking whether response time of the destination IP address exceeds a preset threshold or not, if no, updating the dynamic detection table. According to the load balancing device and method disclosed by the invention, the static table item and the dynamic detection can be organically fused together, and detection pressure and maintenance cost of the device can be reduced.
Description
technical field [0001] The invention relates to a load balancing method and device, in particular to a load balancing method and device for multiple ISP outlets. Background technique [0002] In enterprise network applications, many users with large-scale networks will have two or more ISP outlets (such as China Telecom and China Unicom, etc.). Enterprise users hope to realize the multi-link load balancing function on the gateway device at the egress of their own network, and at the same time avoid the problem that an abnormal ISP network causes enterprise employees to be unable to access the Internet. Load balancing is to load-balance the egress traffic on multiple links according to a certain algorithm. Please refer to figure 1 As shown in the typical enterprise network diagram with multiple ISP egresses, individual PC users on the intranet of the enterprise need to access the services of remote servers on the Internet. Select a better link on multiple ISP links for dis...
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IPC IPC(8): H04L12/56H04L29/08
Inventor 胡国华
Owner NEW H3C TECH CO LTD