Internet protocol (IP) address management method and device, and routing equipment

The invention discloses an internet protocol IP address management method and device, and routing equipment. The method comprises the following steps: acquiring a request for allocating an IP address to target terminal equipment; if the number of the IP addresses occupied in the IP address pool does not exceed the preset threshold value, allocating the idle IP addresses in the IP address pool to the target terminal equipment; if the number of IP addresses occupied in the IP address pool exceeds a preset threshold value, determining an offline device list from a DHCP allocation list according to an FDB table and a WLAN driving device list; and recovering the IP address of at least one piece of target offline equipment in the offline equipment list, and distributing the idle IP address to the target terminal equipment from the recovered IP address pool. Visibly, according to the method and the device, the value of the preset threshold value is dynamically set, and the offline equipment is accurately judged base