The application provides a routing
processing method and device, the method comprising: receiving a first
route advertisement sent by a second network device, the first
route advertisement comprising a first host
route and a first sequence number; storing the first host route and the first sequence number in a
second RIB included in a BGP protocol module; according to address information included in the first host route, obtaining all second host routes comprising the address information and second sequence numbers of the second host routes from the
second RIB; selecting a third sequence number from all the second sequence numbers, the third sequence number being the largest sequence number in all the second sequence numbers; if a third host route corresponding to the third sequence number is sent by a third network device in the same area as the first network device, adding the third host route to the first RIB, and issuing the added route table item to a forwarding table FIB.