Method for detecting address conflict when distributing IP address

A technology of IP address and address conflict, applied in the field of communication, can solve problems such as server ignorance and network problems, and achieve the effect of reducing conflicts, improving allocation efficiency, and reducing transmission

Inactive Publication Date: 2009-01-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] For this kind of address conflict detection, the initiative is completely on the client, but because many clients will not send arp after applyin

Method used

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  • Method for detecting address conflict when distributing IP address
  • Method for detecting address conflict when distributing IP address

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Example Embodiment

[0021] The present invention provides an address conflict detection method when assigning IP addresses. DHCPSERVER actively performs address conflict detection when assigning addresses, and uses Ping protocol to complete the detection process. When SERVER obtains an address from an address pool, the address is first Perform a Ping action. If there is no response, it means that there is no client using the address in the network, which is an assignable address. If there is a Ping response, it means that the address is a conflicting address, and then directly put the address into the conflicting address table, and then Take the address and redistribute it. In this way, the transmission of DHCP messages in the network is reduced, so that the user end can obtain the corresponding address that can be used at one time, which improves the allocation efficiency and further reduces the occurrence of address conflicts.

[0022] This embodiment provides a method for detecting address conflic...

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Abstract

The invention provides a method for detecting the conflict of addresses when IP addresses are distributed, which comprises the following steps: a server receives an IP address request message sent by a user terminal; if distributable IP addresses exist in an address pool, one of the distributable IP addresses is selected for carrying out Ping operation; and if no internetwork control information protocol responses, the selected IP address is replied to the user terminal, thereby completing the address application of the user terminal. The technical proposal is adopted to reduce the transmission of a dynamic distribution protocol message for a host in the network in order that the user terminal can obtain the corresponding usable address once, improve the distribution efficiency and reduce the occurrence of the conflict when the IP addresses are distributed.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for detecting address conflicts when assigning IP addresses. Background technique [0002] DHCP (Dynamic Host Assignment Protocol) is a dynamic host configuration protocol. It is mainly a set of protocols to complete the assignment of IP addresses on the current network. This protocol is in the SERVER (server) / CLIENT (client) mode. Interact with the Server to obtain the IP address and some related configuration information. DHCP SERVER is a server responsible for allocating IP addresses and delivering some configuration information. From the perspective of the DHCP protocol, the Server is completely in a passive position, and all actions are basically triggered by the Client. Such as figure 1 Shown is the basic interaction process of prior art DHCP, [0003] Step 101: Client sends a DHCP Discover (IP address discovery) message to SERVER; [0004] Step 102: When there is no ...

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Application Information

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IPC IPC(8): H04L29/12H04L29/06H04L12/56
Inventor 胡伟
Owner ZTE CORP
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