Method and device for automatically resolving IP conflicts in secondary routing in dhcp

Abstract

The invention discloses a method and a device for automatically resolving IP conflicts in secondary routing in DHCP. The method includes: performing an AND operation on the IP address assigned to the secondary router by the upper-level equipment and the subnet mask to obtain the result value WANQ; Perform an AND operation on its own IP address and its own subnet mask to obtain the result value LANQ; judge whether WANQ=LANQ, if yes, change the network number of the IP address of the secondary router and restart the secondary router; otherwise, send a request message to Superior equipment. The invention can automatically help users detect whether the IP address of the LAN port of the secondary router is in conflict with the IP address of the WAN port. If a conflict is detected, the IP address of the LAN port can be automatically modified to a different network segment to eliminate the IP conflict, or automatically pop up a window Prompt the user to automatically modify the secondary route with an IP conflict, and the user can click OK without any other operations, which is very convenient. Compared with ordinary routers that cannot give any prompts at all, it is more practical.

Description

technical field [0001] The invention relates to the technical field of routers, in particular to a method and device for automatically resolving IP conflicts in secondary routing in DHCP. Background technique [0002] Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol, DHCP) is a LAN network protocol, using UDP (the abbreviation of User Datagram Protocol, the Chinese name is User Datagram Protocol) protocol work, there are two main purposes: to the internal network or network service providers automatically Assign IP (the abbreviation of the Internet Protocol network interconnection protocol, the Chinese abbreviation is "Network Association", which is a protocol designed for computer network interconnection and communication) addresses, and give users or internal network administrators as a role for all computers. means of central management. [0003] At present, most of the routers on the market are set to the same router IP network segment (like 192....

AI Technical Summary

Problems solved by technology

Therefore, when two routers do secondary routing, IP network segment conflicts are likely to occur, so that the router (secondary router) as the secondary routing cannot obtain an IP address, and thus cannot access the Internet, or even if it can obtain an IP address, it is still the same. Able to surf the Internet without any prompts on the page

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