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DHCP (Dynamic Host Configuration Protocol) address allocation method, equipment and system

An IP address and address technology, applied in the field of communications, can solve problems such as IP address allocation errors, and achieve the effect of ensuring correct allocation

Active Publication Date: 2018-01-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in practical applications, the above method has at least the following problems: the DHCP server must support the corresponding functions to ensure the correct execution of the above operations. When the DHCP server does not support the corresponding functions, it will cause IP address assignment errors

Method used

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  • DHCP (Dynamic Host Configuration Protocol) address allocation method, equipment and system
  • DHCP (Dynamic Host Configuration Protocol) address allocation method, equipment and system
  • DHCP (Dynamic Host Configuration Protocol) address allocation method, equipment and system

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Embodiment Construction

[0056] The embodiment of the present application provides a method, device and system for assigning a DHCP address, so as to ensure correct assignment of IP addresses in a distributed gateway network architecture without the need for a DHCP server to support corresponding functions.

[0057] In the following, specific examples will be used to describe in detail respectively.

[0058] In order to make the purpose, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the implementation described below Examples are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts be...

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Abstract

The invention provides a DHCP (Dynamic Host Configuration Protocol) address allocation method, equipment and a system. The method comprises the following steps: receiving a first request message sentby a DHCP client to a DHCP server for requesting to allocate an IP address by first distributed gateway equipment, and generating a second request message according to the first request message, wherein the second request message carries first sub option information, the first sub option information comprises a first Back tracking IP address, and the first Back tracking IP address is an interfaceIP address used by the first distributed gateway equipment to communicate with the DHCP server; transmitting the second request message to the DHCP server by the first distributed gateway equipment, and receiving a response message from the DHCP server, wherein the response message carries second sub option information, and the second sub option information comprises a second Back tracking IP address; and forwarding the response message by the first distributed gateway equipment according to the second Back tracking IP address. Therefore, in network architecture of a distributed gateway, the correct allocation of IP addresses can also be ensured without the need for the DHCP server to support the corresponding functions.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a method, device and system for address allocation of a Dynamic Host Configuration Protocol (DHCP) for a distributed gateway (Distributed gateway). Background technique [0002] DHCP is a LAN network protocol that works with the User Datagram Protocol (UDP) protocol. It has two main purposes: to automatically assign Internet Protocol (IP) addresses to internal networks or network service providers, and to users Or an internal network administrator as a means of centrally administering all computers. [0003] In the distributed gateway network architecture, the DHCP client and the DHCP server are not in the same network segment, and the distributed gateway device acts as a DHCP relay (Dynamic Host Configuration Protocol relay, DHCP relay) between the DHCP client and the DHCP server. Forward DHCP broadcast messages across network segments. The DHCP server is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/66
Inventor 刘必振娄昆昆陈保军
Owner HUAWEI TECH CO LTD
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