IP address conflict avoidance method, system, dhcp server, dhcp client
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An IP address and server technology, applied in the field of mobile communications, can solve problems such as IP address conflicts, and achieve the effect of restoring normality and stability
Active Publication Date: 2011-12-14
GLOBAL INNOVATION AGGREGATORS LLC
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[0007] The present invention provides an IP address conflict avoidance method, system, DHCP server, and DHCP client to solve the problem of IP address conflict between devices in an IP network in the prior art
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Embodiment 1
[0036] According to an embodiment of the present invention, a method for avoiding IP address conflicts is provided, figure 1 It is a flow chart of the IP address conflict avoidance method in Embodiment 1 of the method of the present invention, as figure 1 As shown, the IP address conflict avoidance method according to the embodiment of the present invention includes the following processing:
[0037] Step 101, the DHCP server assigns a network protocol IP address to the DHCP client according to the request of the DHCP client, and when the DHCP client detects that the IP address is identical to the IP address of other devices, receives the conflicting IP address sent by the DHCP client. IP address conflict message for the address;
[0038] Step 102, the DHCP server processes the conflicting IP address according to the IP address conflict message, and re-allocates the IP address to the DHCP client according to the request of the DHCP client.
[0039] In step 102, the DHCP serv...
Embodiment 2
[0045] According to an embodiment of the present invention, a method for avoiding IP address conflicts is provided, figure 2 It is a flow chart of the IP address conflict avoidance method in the second embodiment of the method of the present invention, as figure 2 As shown, the IP address conflict avoidance method according to the embodiment of the present invention includes the following processing:
[0046] Step 201, the DHCP client applies to the DHCP server for assigning an IP address, and obtains the IP address assigned by the DHCP server;
[0047] Step 202, the DHCP client judges whether the IP address is the same as that of other devices, and if yes, sends an IP address conflict message carrying a conflicting IP address to the DHCP server, and reapplies to the DHCP server for assigning an IP address.
[0048] In the embodiment of the present invention, the DHCP client is mainly used for the application of the IP address and the detection of IP address conflicts: firs...
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Abstract
The invention discloses a method and a system for avoiding an internet protocol (IP) address conflict, a dynamic host configuration protocol (DHCP) server and a DHCP client. The method comprises the following steps that: a DHCP server distributes an IP address to a DHCP client according to a request of the DHCP client and receives an IP address conflict message that carries a conflicting IP address and is sent by the DHCP client on the condition that the DHCP client has detected that the distributed IP address is the same as that of the other equipment; and the DHCP server carries out processing on the conflicting IP address according to the IP address conflict message and redistributes an IP address to the DHCP client according to the request of the DHCP client. According to a technical scheme of the invention, when there is an IP address conflict in a network, it can be ensured that a DHCP client can rapidly detect and avoid the IP address conflict, so that normal and stabilization of the network can be rapidly recovered.
Description
technical field [0001] The invention relates to the field of mobile communication, in particular to an IP address conflict avoidance method, system, DHCP server, and DHCP client. Background technique [0002] In the prior art, an Internet Protocol (Internet Protocol, referred to as IP) address is a kind of identification of a network node in an IP network, and is used for forwarding of IP packets in the network. In the IP network, the distribution of the IP address should be able to Uniquely identify each network node. [0003] At present, a dynamic host configuration protocol (Dynamic Host Configuration Protocol, referred to as DHCP) can be used to realize the automatic acquisition of IP addresses by network nodes, and to avoid IP address conflicts to the greatest extent. There are two basic components in the DHCP protocol model: 1. DHCP server (Server), which is used to centrally manage all IP network configuration parameters, and is responsible for processing DHCP reques...
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