Patent attributes
The present invention provides a node capable of preventing the problems caused by switching between traffic communication paths when a link failure occurs. According to an embodiment of the invention, among ports of a node 10, ports P1 and P2 connected to a link between the node 10 and a node 20 are registered in a virtual port VP1, and ports P3 and P4 connected to a link between the node 10 and the node 30 are registered in a virtual port VP2. The virtual ports VP1 and VP2 are registered in a virtual port VP3 allocated to a virtual LAG group. When one link between the node 10 and the node 20 is disconnected, the node 10 transmits frames, which have been transmitted from a physical port connected to the link, from the virtual port including the physical port, among the virtual ports belonging to the virtual port VP3 allocated to the virtual LAG group.
