Address distribution method and device

Abstract

The invention provides a method and a device for address distribution. The method includes steps of receiving address request sent by a client and forwarding the address request message to a server; converting related time limit in an address confirmation message to agent time limit if the address confirmation message including the address and the related time limit of use address returned by the server is received; and transmitting the agent address confirmation message including the address and the agent time limit to the client; wherein the related time limit includes at least one of lease time, relet time and address binding time, the agent time limit includes at least one of agent lease time, agent relet time and agent address binding time; the agent lease time is smaller than or equal to the lease time, the agent relet time is smaller than or equal to the relet time, and the agent address binding time is smaller than or equal to the address binding time. By employing the embodiment of the invention, address of the client is distributed by an access equipment, the agent lease time is smaller than or equal to the lease time, thereby being convenient for management and detection of the client.

Description

technical field [0001] The present invention relates to communication network technology, in particular to an address allocation method and device thereof. Background technique [0002] As the size of the network continues to expand and the complexity of the network increases, the number of computers often exceeds the number of IP addresses available for assignment. At the same time, with the widespread use of portable computers and wireless networks, the location of the computer also changes frequently, and the corresponding IP address must also be updated frequently, resulting in more and more complicated network configuration. At present, Dynamic Host Configuration Protocol (DHCP: Dynamic Host Configuration Protocol) is developed to solve these problems. [0003] DHCP adopts the client / server communication mode, the client submits a configuration application to the server, and the server returns the corresponding configuration information such as the IP address assigned ...

AI Technical Summary

Problems solved by technology

[0006] But, the contriver finds the defective of prior art in the process of realizing the present invention and is: because general DHCP server needs to assign addresses for multiple address allocation devices, needs to manage and reply the renewal message of a large number of DHCP clients, in DHCP clients relatively If there are too many clients and the lease renewal time is set relatively small for the convenience of client management, the DHCP server cannot respond to the DHCP client’s lease renewal message in time due to performance problems of the DHCP server, resulting in the abnormal offline of the DHCP client, which is more likely to cause subsequent DHCP The client's address allocation request cannot be responded in time, so that subsequent DHCP clients cannot go online normally

[0007] In addition, in the prior art, the DHCP server or the relay server determines whether the client is online by sending an address resolution protocol (ARP: Address Resolution Protocol) detection request, because some terminals do not respond to the detection request at all, so it is impossible to know the Whether the client is online, so that the client cannot receive relevant information when the client is online, or the client still occupies the IP address when the client is not online, resulting in waste of addresses

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