Flushing method with separated sets for type 5 link state advertisement in open shortest path first protocol

The invention relates to an opening at short-path first protocol fifth a link is circular groups is as follows method, a communication network technical field. The method is divided into the LSA S groups, a current processing the serial number of group is the N-TYPE, WHEREIN ucx is 1 and 2, ......S,Unequal the second 1800/S processing, WHEREIN ohm group are LSA, completes of the group revolutions of the LSA, the output N of the equal to S, and N value is equal to the S, loop is the N-TYPE conductor is 1; and N valve is less than S, with AN value 1, which is formed with N+1 are LSA, completes of the group revolutions of the ring is circular, ex analogia. Method of this invention, effectively reduced a transient the current impact with the network, comprising avoiding the impacts of the network device is a network, the keeping network switch device stable efficient movements.