Patent ID: 8072897

Claim:
A method for selecting an edge connection link across different management domain networks, wherein a plurality of finks is provided between a first management domain network and a second management domain network, the first management domain network and the second management domain network are neighbors, and the method comprises: determining, by a first resource management and control function device in the first management domain network, a plurality of network domain edge gateways of the first management domain network corresponding to the second management domain network, selecting one of the network domain edge gateways, determining more than one link between the selected one network domain edge gateway and the second management domain network, and sending identifier information of the determined more than one link to a second resource management and control function device of the second management domain network; determining, by the second resource management and control function device, the link to the first management domain network, in accordance with the received identifier information of the determined link; and the determining, by the second resource management and control function device, the link to the first management domain network further comprises: selecting a link with the corresponding identifier information from the determined more than one link as the determined rink, and sending the identifier information of the determined link to the first resource management and control function device.