FIELD: radio engineering, communication.
SUBSTANCE: invention relates to communication and particularly a method of switching node main/standby controllers based on a content distribution network (CDN). The switching method involves a node standby controller detecting status of a current node main controller and, when the node main controller is abnormal, the node standby controller selecting one node standby controller to be a new node main controller by replacement, wherein the selection procedure includes the following steps: the node standby controller which firstly detects that the current node main controller is abnormal selecting one node standby controller as the new node main controller according to a preset rule and sending a switching request to notify that node standby controller; and the selected node standby controller being switched to be the new node main controller based on the switching request, notifying a switching result to other standby controllers and reporting to a manager.
EFFECT: facilitating resource saving.
13 cl, 4 dwg
