Dynamic distribution method for IP address in wireless local area network

Abstract

The invention discloses a dynamic distribution method for an IP address in a wireless local area network. The IP address is transmitted through an HELLO packet which is periodically broadcasted in a protocol, and each node creates a table to store the corresponding relation between the IP and the MAC, wherein when the node receives the HELLO packet, whether the IP address carried in the HELLO packet conflicts with that in the table or not is judged, if the IP address carried in the HELLO packet conflicts with that in the table, a conflict notice is sent to a conflict node, the conflict node regenerates an IP address, and the HELLO packet is discarded; otherwise, the HELLO packet is processed continuously. According to the dynamic distribution method, IP distribution and the L2MPM protocol are combined, and a dynamic IP distributing and conflict detecting and solving method is achieved. A new HELLO packet frame structure and a conflict notifying packet structure are adopted, and dynamic IP configuration in the WMN network based on the L2MPM protocol is achieved. The dynamic distribution method is simple, convenient to operate and capable of well solving the problems that in the prior art, the topology built based on the L2MPM protocol changes dynamically, the clustering for maintaining the network structure is large in workload, and the topology is not suitable for the network of which nodes move fast and topology changes fiercely.

Description

technical field [0001] The invention belongs to the technical field of local area networks, and in particular relates to a method for dynamically assigning IP addresses in a wireless local area network. Background technique [0002] The prerequisite for each node in any network to communicate is to have a unique IP address in the entire network, and WMN is no exception. Nodes at both ends of the communication must have different IP addresses. Small-scale applications can manually configure IP addresses, but when the network scale becomes larger, manual configuration becomes useless. Therefore, it is necessary to design a dynamic IP allocation method suitable for the L2MPM protocol to facilitate WMN deployment based on the L2MPM protocol. [0003] The predecessors proposed to group all nodes in the network before address allocation, divide a group of nodes with a distance of less than or equal to r hops into a group, and elect the node with the largest number of neighbor node...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic IP address allocation method in a wireless local area network, aiming to solve the problem that the topology built based on the L2MPM protocol in the prior art is dynamically changing, and the grouping of the maintenance network structure itself has a heavy workload, which is not suitable for fast node movement. , the problem of a network with drastic topology changes

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