IP address allocation system and working method thereof

Abstract

An IP address allocation system and a working method thereof are provided. In addition to having a DHCP server and a client, the system is provided with a policy server which can implement an IP address allocation decision function for the client by itself or/and by cooperating with a third party system in a DHCP networking mode. The system can allocate an IP address according to the information in a DHCP message, and can also decide the allocation of an IP address based on a time policy, corresponding policies of people of different identity and a variety of policies of the state of a third party object through the policy server via a third party system interface according to the auxiliary information outside the DHCP message. The flexibility of DHCP address allocation management is expanded greatly, the different needs of actual application scenarios are fully met, and the information security is improved. Moreover, the data exchange and address allocation policies of a DHCP protocol are decoupled and separated, and DHCP address allocation and decision are independent of each other, which reduces the workload of the DHCP server and fully enhances the service performance and operation flexibility.

Description

technical field [0001] The invention relates to an IP address allocation system and its working method, belonging to the technical field of network system management and control. Background technique [0002] IP is the abbreviation of the English acronym for Internet Protocol (Internet Protocol), and the Chinese abbreviation is "Internet Association". As the name implies, the protocol for interconnection between networks is a protocol designed for computer networks to communicate with each other. In the Internet, IP is a set of rules that enable all computer networks connected to the Internet to communicate with each other, and it specifies the rules that computers should follow when communicating on the Internet. Computer systems produced by any manufacturer can be interconnected with the Internet as long as they comply with the IP protocol. IP addresses are unique and can be divided into different categories according to the different nature of users. [0003] At presen...

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Problems solved by technology

[0013] Based on the above analysis, the current IP address allocation method in the IP network has the following disadvantages: the DHCP server needs to be responsible for both the calculation of the IP address and the assignment of the IP address according to the address allocation strategy, and the service performance and flexibility of the DHCP server will be affected.

In addition, the DHCP server can only allocate IP addresses based on the information in the discovery message sent by the DHCP client, and the IP address allocation policies that can be set are very limited, which cannot fully meet the needs of the actual network environment

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