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Method, device and system for preventing clients from frequently initiating IP address allocation requests

An IP address and allocation request technology, applied in the field of data communication, can solve the problem that the server cannot respond to the client with the DHCPOffer message, and achieves the effect of being easy to implement, preventing the number of IP address allocation requests, and alleviating network pressure.

Active Publication Date: 2017-05-31
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, some clients may broadcast DHCPDiscover messages frequently, which puts a lot of pressure on the network and server
Or, although the server is configured as an IPv4 / IPv6 server, if the IPv4 module is closed, the server cannot respond to the client with a DHCPOffer message when the client broadcasts a DHCPDiscover message and a Solicit message at the same time or successively.
At this time, some clients may also broadcast DHCPDiscover messages frequently, which puts a lot of pressure on the network and server

Method used

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  • Method, device and system for preventing clients from frequently initiating IP address allocation requests
  • Method, device and system for preventing clients from frequently initiating IP address allocation requests
  • Method, device and system for preventing clients from frequently initiating IP address allocation requests

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Experimental program
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Embodiment Construction

[0027] The following will refer to figure 1 A method for preventing clients from frequently initiating IP address allocation requests according to the first aspect of the present application is described in detail.

[0028] In step 101, the client generates a reference value of the maximum retransmission time of the IP address assignment request. For example, the client may generate the reference value of the maximum retransmission time by using a random algorithm, a backoff algorithm, etc. known to those skilled in the art.

[0029] Next, in step 102, the client sends an IP address allocation request to the server, and the request carries the reference value of the maximum retransmission time.

[0030] Then, in step 103, the server determines the actual value of the maximum retransmission time based on the reference value of the maximum retransmission time obtained from the client. For example, the server may parse the IP address assignment request to obtain the reference v...

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PUM

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Abstract

The invention provides a method, a client, a server and a system for preventing the client from frequently initiating an IP (Internet protocol) address allocation request. The method comprises the following steps: the client generates a reference value of maximum retransmission time of the IP address allocation request; the client transmits the IP address allocation request to the server, wherein the request carries the reference value of the maximum retransmission time; the server determines an actual value of the maximum retransmission time based on the reference value of the maximum retransmission time, and transmits a message carrying the actual value of the maximum retransmission time to the client; the client determines time when the IP address allocation request is to be reinitiated to the server according to the actual value of the maximum retransmission time. According to the method for preventing the client from frequently initiating the IP address allocation request, the number of IP address allocation request frequent-initiation times of the client is effectively reduced, and the network pressure is relieved.

Description

technical field [0001] The present application relates to the field of data communication, and more specifically, relates to a method, a client, a server and a system for preventing clients from frequently initiating IP address allocation requests. Background technique [0002] The IPv4 protocol (Internet Protocol version 4, Internet Protocol version 4) is the core protocol in the protocol suite TCP / IP protocol suite currently used by the global Internet. The IPv4 protocol uses a 32-bit static IP address, that is, there are at most 2 32 Clients can connect to the Internet. In the past ten years, due to the vigorous development of the Internet, the demand for IP addresses has increased. In order to avoid the shortage and waste of IP address resources, the IETF (Internet Engineering Task Force, Internet Engineering Task Force) has formulated a dynamic allocation The mechanism of the IP address is the DHCP protocol. [0003] According to the DHCP protocol under IPv4 (hereina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L29/06
Inventor 杨天乐李连源
Owner CHINA MOBILE COMM GRP CO LTD