Method and system for backing up DHCP SERVER

A backup and IP address technology, which is applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as user flow interruption, poor user experience, and instantaneous user online impact of access equipment, so as to relieve pressure and improve user quality. satisfaction effect

Inactive Publication Date: 2010-06-09
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the above method, when the link between DHCP RELAY and DHCP SERVER fails, or the DHCP SERVER itself fails, online users will fail to renew the lease, causing the user IP address to be released due to expiration, user traffic is interrupted, and the user needs to restart the lease. Apply for an address from the standby DHCP server. At this time

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  • Method and system for backing up DHCP SERVER
  • Method and system for backing up DHCP SERVER
  • Method and system for backing up DHCP SERVER

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[0035] The basic idea of ​​the present invention is: when the DHCP RELAY determines that the DHCP SERVER is unavailable, it backs up the user and address lease information, and after the DHCP SERVER failure is removed, the DHCP SERVER reversely synchronizes the relevant lease renewal information on behalf of the lease renewal.

[0036] The implementation of the technical solution will be further described in detail below in conjunction with the drawings.

[0037] The technical problem to be solved by the present invention is to provide a method for backing up the DHCP SERVER on the DHCP RELAY device in view of possible network failures after the user goes online. By backing up the user information of the DHCP SERVER, to reduce the risk of network failure, and effectively improve user satisfaction.

[0038] figure 2 It is a schematic diagram of the process flow of the DHCP SERVER backup method of the present invention, such as figure 2 As shown, the DHCP server backup method of the ...

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Abstract

The invention discloses a method for backing up a dynamic host configuration protocol server (DHCP SERVER), which comprises that: a user host acquires an IP address from the DHCP SERVER through a dynamic host configuration protocol delay (DHCP DELAY); when the user host requests for reletting and does not receive a reletting response of the DHCP SERVER, the DHCP DELAY responds to the reletting request of a user and records related reletting information; and when the DHCP SERVER is available, the DHCP DELAY sends the reletting information to the DHCP SERVER for synchronization. The invention also correspondingly discloses a system for backing up the DHCP SERVER. The user host does not need waiting to apply for the IP address again until the DHCP SERVER is available, and can continue using the previous IP address, so the method and the system can avoid off line of users due to the fault of the DHCP SERVER, improve the satisfaction of the users, and relieve the pressure of network equipment due to on line again of the users together.

Description

technical field [0001] The present invention relates to a Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP) technology, in particular to a backup method and system for a DHCP server (SERVER). Background technique [0002] In a network based on the TCP / IP protocol, the communication between computers is realized through a unique IP address. Using the DHCP protocol, the user host can dynamically request an IP address from the DHCP SERVER. Since the DHCP message adopts the broadcast mode and cannot pass through multiple subnets, the basic networking of the existing access network often introduces a DHCP relay (RELAY), so that user hosts and DHCP Servers in different network segments can communicate with each other. figure 1 It is a schematic diagram of the structure for the user host to communicate with DHCPSERVER through DHCP RELAY, as shown in figure 1 As shown, the user host sends the request message to DHCP RELAY, and the DHCP RELAY forwards t...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/56H04L12/24
Inventor 李莹袁博
Owner ZTE CORP
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