Internetwork routing method and network forwarding equipment

The invention discloses an internetwork routing method. The method comprises the following steps: establishing a mapping table from an internet protocol (IP) address prefixes of network forwarding equipment to AS numbers; generating an aggregation forwarding table based on the mapping table and a forwarding table of the network forwarding equipment, wherein the aggregation forwarding table comprises table entries of the IP address prefixes and the AS numbers; and when the network forwarding equipment receives the data packet, searching the next hop which corresponds to a data packet from the aggregation forwarding table according to the head of the data packet, so as to forward the data packet. According to the method, because the AS numbers are introduced into the forwarding table, the IP address prefix table entries from the same AS declaration in the forwarding table are aggregated into the AS number table entry. The aggregation property of the IP address prefix entries is enhanced, and one part of IP prefixes are kept due to the requirements of traffic engineering, so that the IP aggregation property is improved and the requirements of traffic engineering are met, and therefore the AS number routing of the traffic engineering is not influenced.