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IP address allocation method and device

A technology of IP address and allocation method, which is applied in the field of communication, can solve problems such as host IP address allocation conflicts, and achieve the effect of resolving allocation conflicts

Active Publication Date: 2018-02-09
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an IP address allocation method and device to solve the situation that the IP address allocation conflicts of different hosts in the network are caused by the two ways of statically configuring the IP address of the control device and applying for an IP address from the DHCP server

Method used

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Embodiment Construction

[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the solution of the present application will be further described in detail below with reference to the accompanying drawings.

[0034] like figure 1 As shown, it is a schematic diagram of an application scenario of an embodiment of the present invention, including a sub-DHCP server in the SDN network, a control device in the SDN network, a DHCP server for the control device, and multiple hosts, wherein the sub-DHCP server in the SDN network can be Multiple, the control device in the SDN network and the sub-DHCP server in the SDN network can communicate through messages, and the host can be a physically existing host or a virtual host (VM, Virtual Machine) (VM1 and VM2).

[0035] The invention provides an IP address allocation method to solve the problem in the prior art that the same IP address is allocated to different hosts and IP address allocation conflicts occur.

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Abstract

The present invention provides an IP address allocation method and device. The method includes: sending a first discovery message, and the first discovery message includes the IP address to be allocated for the host selected from the IP address pool of the DHCP server of the control device. address; receiving the distribution confirmation message replied by the sub-DHCP server in the SDN network according to the first discovery message; if the IP address to be allocated is obtained according to the distribution confirmation message and has been allocated by the sub-DHCP server , then update the state of the IP address to be allocated, and reselect the IP address for the host; if it is found that the IP address to be allocated has not been allocated, allocate the IP address to be allocated to the host, thereby Effectively solve the problem of IP address allocation conflicts.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an IP address allocation method and device. Background technique [0002] In the prior art, when a host is online in an SDN (Software Defined Network, software-defined network), the control device in the SDN network has two ways to assign an IP (Internet Protocol, Internet Protocol) address to the online host : The control device manually statically configures the IP address, or the control device obtains the IP address from a DHCP (Dynamic Host Configuration Protocol) server in the Layer 2 network, and configures it for the host. However, after manually statically configuring an IP address for an online host, other online hosts may still obtain the same IP address from the DHCP server in the Layer 2 network, resulting in conflicts in the assignment of IP addresses to different hosts in the network. Happening. Contents of the invention [0003] The invention provides an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04L61/5007
Inventor 杨碧辉王海黄李伟
Owner NEW H3C TECH CO LTD
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