Method and device for processing routing data

The embodiment of the invention provides a method and device for processing routing data. The method specifically comprises the steps that a dirty dirty table item is obtained, the dirty table item comprises at least one first bit, the at least one first bit corresponds to at least one first routing table item in a one-to-one mode, a bit value borne on the first bit is used for indicating whether the first routing table item corresponding to the first bit is outdated or not, and if yes, the first routing table item corresponding to the first bit is not outdated, the first routing table item corresponding to the first bit is not outdated; the at least one first routing table item is stored in a cache memory Cache; and maintaining the first routing table item corresponding to the first bit according to the bit value borne on the first bit. Through the method and the device provided by the embodiment of the invention, the routing data in the Cache can be updated in time, the problem of inconsistency of the routi