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Method for implementing DHCP service redundant and DHCP server

A server and redundant technology, applied in the field of data communication, can solve problems such as network service interruption, affecting network service continuity, and not providing DHCP service redundancy function, so as to achieve the effect of ensuring continuity and compatibility

Inactive Publication Date: 2007-12-19
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the fault of router 1 is still not eliminated after the lease time expires, the network service will be interrupted because the host cannot automatically obtain parameters such as IP address and gateway
It can be seen that the existing technology does not provide the redundancy function of the DHCP service, and when the DHCP server fails, it will affect the continuity of network services

Method used

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  • Method for implementing DHCP service redundant and DHCP server
  • Method for implementing DHCP service redundant and DHCP server

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The invention uses the improved DHCP server to make two or more routers run DHCP, and each router monitors the status of the other party. If one router fails, the other router will take over the DHCP service before the IP address lease time expires, so as to achieve the purpose of DHCP service redundancy.

[0036] Please refer to Fig. 2, the method for realizing the DHCP service redundancy of the preferred embodiment of the present invention comprises the following steps:

[0037] Step 201, configuring at least two routers as DHCP servers, and electing one DHCP server as the main DHCP server;

[0038] The router runs DHCP and becomes a DHCP server. The main DHCP server is elected by comparing the priority of the routers or the size of the I...

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Abstract

This invention discloses a method for realizing redundancy of DHCP service and DHCP server, in which, the method includes: configuring at least two sets of routers as the DHCP servers and selecting one as the main one and then synchronizing DHCP information among the DHCP servers, when the main one is faulty, another one is selected as their main one to realize redundance of DHCP service.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method for realizing DHCP service redundancy and a DHCP server. Background technique [0002] It has been several decades since the initial research of the network to the current wide application. At present, almost the entire IT is based on IP, and IToIP is the characteristic of today. In the IP network, there are two ways to allocate IP addresses, one is fixed allocation, which specifies an IP address for the host; the other is dynamic allocation (automatic allocation), Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP ) The server dynamically allocates parameters such as IP address and gateway for the host. [0003] In the DHCP protocol, the process of dynamically assigning an IP address to a host mainly includes: the host broadcasts a DCHP service request, that is, a DHCP REQUEST packet; the DHCP server responds to the DHCP service request and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04L12/56H04L29/06H04L45/24
Inventor 王军
Owner NEW H3C TECH CO LTD
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