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Method and device for health detection for equalized equipment

A technology of balancing equipment and health detection, applied in the field of communication, can solve the problems of being attacked by balanced equipment, long detection period, and consumption of system resources, etc., and achieve the effect of low cost

Inactive Publication Date: 2012-01-04
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0025] It can be seen that the establishment of a normal TCP connection requires the load balancing device to exchange information with the balanced device multiple times, which consumes bandwidth resources and server system resources: such as sockets, memory, CPU, etc.; frequent health checks will cause the balanced device to be affected. Syn-fllood-like attack; in addition, because the detection cycle is too long, it will delay the discovery of the balanced device failure and affect the stability of the function

Method used

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  • Method and device for health detection for equalized equipment
  • Method and device for health detection for equalized equipment
  • Method and device for health detection for equalized equipment

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Embodiment Construction

[0058] The core idea of ​​the present invention is: Utilize the TCP reset message to realize TCP health detection without establishing a TCP connection, specifically: the load balancing device sends a non-TCP reset message to the balanced device, and the non-TCP reset message is received by the balanced device Afterwards, a TCP reset message is generated and returned according to the non-TCP reset message, so that the load balancing device knows that the balanced device is healthy and is in a normal working state. In the present invention, no matter the load balancing device or the balanced device (including server and network device, etc.), no normal TCP connection needs to be established, and the system overhead is small.

[0059] The invention provides a health detection method of a balanced device, which is applied in a network including a load balancing device and at least two balanced devices, and the balanced device includes: a server, a gateway device and a link. The m...

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Abstract

The invention discloses a method for health detection for equalized equipment, comprising the following steps: load equalizing equipment sends a non TCP reset message to the equalized equipment, and the non TCP reset message is used for enabling the equalized equipment to generate a TCP reset message; the load equalizing equipment determines whether the returned TCP reset message is received fromthe equalized equipment or not; if true, the equalized equipment is determined to normally work; and if not, the equalized equipment is determined to abnormally work. In the invention, the equalized equipment is in a healthy state by utilizing a reset field indication in a TCP message, and either the load equalizing equipment or the equalized equipment does not need to establish normal TCP connection and can finish a health detection function by expensing less cost.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for health detection of equipment to be balanced. Background technique [0002] LB (Load Balance, load balancing) is a cluster technology that distributes specific services such as network services and network traffic to multiple network devices (including servers, gateway devices, etc.) or multiple links, thereby improving business processing capabilities. Ensure high reliability of services. According to different load balancing objects, it can be divided into: server load balancing, gateway device load balancing, link load balancing. [0003] Wherein, the object of server load balancing is the server providing the service, which can improve the processing capability of the service. Server load balancing is divided into NAT (Network Address Translation, Network Address Translation) method, DR (Designated Router, designated router) method, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/56H04L29/08H04L12/803
Inventor 崔晓会
Owner NEW H3C TECH CO LTD
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