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Method and system for allocating IP address

An IP address and address technology, applied in the field of communication, can solve the problems of heavy system load and high maintenance cost, and achieve the effect of reducing operation and maintenance cost and weakening dependence.

Inactive Publication Date: 2010-05-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method and system for allocating IP addresses, which solves the defects of high maintenance cost and heavy system load caused by the coexistence of DHCPv4 and DHCPv6, and realizes the allocation of IPv4 addresses through DHCPv6

Method used

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  • Method and system for allocating IP address
  • Method and system for allocating IP address
  • Method and system for allocating IP address

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Embodiment Construction

[0037] The present invention provides a DHCPv6-based IPv4 address allocation solution. The DHCPv6 server allocates IPv6 and IPv4 addresses at the same time, which can avoid the increase in operation and maintenance costs and management complexity caused by the simultaneous deployment of DHCPv4 and DHCPv6 protocols, especially In the later period of transition from IPv4 to IPv6 network, this portable IPv4 address dynamic configuration method can be widely used.

[0038] The embodiment of the present invention expands the new DHCPv6 option category, utilizes the protocol interaction of DHCPv6, the DHCPv6 server dynamically configures and reclaims the IPv4 address from the DHCPv6 client, and the DHCPv6 client performs the address according to the lifetime and aging time of the configured IPv4 address. lease renewal, use and active release.

[0039] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[00...

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Abstract

The invention discloses a method for allocating an IP address, comprising the following steps: sending a request message to a server of a dynamical host configuration protocol version 6 (DHCPv6) by a client which supports internet protocol version 4 (IPv4), requesting to allocate an IPv4 address, and carrying identity related (IA)-IPv4 options in the request message; and after the DHCPv6 server receives the request message, according to the (IA)-IPv4 options, allocating the IPv4 address for the client according to an address allocation strategy and sending the IPv4 address to the client. Under the environment of double protocol stacks of IPv4 and IPv6, the method leads the system to be capable of dynamically configuring the IPv4 address flexibly and easily, and reduces the dependency of the IPv4 service on a DHCPv4 protocol under the environment of the double protocol stacks; and simultaneously for a network manager, single DHCPv6 protocol is configured and used, thus being capable ofeffectively reducing the cost of operation and maintenance.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and system for allocating IP addresses. Background technique [0002] The rapid development of the IPv4 (Internet Protocol version 4) network inevitably exposes the limitations of the IPv4 network. In order to solve the shortcomings of the IPv4 network in address space, performance and security, the next generation of IPv6 (Internet Protocol Version 6) protocol. [0003] The next-generation IPv6 network is still in the early stages of development. When deploying a series of IPv6-based technology applications, it will inevitably coexist with the IPv4 network for a long period of time until the IPv6 network completely replaces the IPv4 network. [0004] IPv6 addresses can be dynamically configured using DHCP (Dynamic Host Control Protocol, Dynamic Host Configuration Protocol) v6, but due to the design differences between DHCPv4 and DHCPv6 protocols, the two cannot ...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/06
CPCH04L29/12971H04L69/167H04L61/6086H04L61/2015H04L29/06142H04L2101/686H04L61/5014
Inventor 蔡志国赵真富是云钊
Owner ZTE CORP
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