Patent ID: 8588217

Claim:
A transport control system comprising, in a network through which communication is made between devices by way of a plurality of network segments of different path techniques, a plurality of gateway nodes each arranged between two network segments to be coupled thereto and adapted to convert a header of a received packet in accordance with the path techniques of the two network segments and to transmit the converted header and a transport control server for controlling the gateway nodes, wherein said transport control server includes; a conversion table storage stored in advance with a conversion table containing a pre-conversion identifier for specifying a packet subject to aggregation of path or transfer of path in respect of each of said two network segments to be coupled and a post-conversion identifier to be added to a header of a received packet and with conversion types indicative of aggregation of path or transfer of path, and a control processing unit, and wherein said control processing unit calculates, when the devices at the endpoints of a path are designated, a route between the devices and specifies one or a plurality of said gateway nodes on the route, acquires, for the individual specified gateway nodes, pre-conversion identifiers, post-conversion identifiers and conversion types corresponding to the two network segments the gateway couple from said conversion table storage and sets them to said gateway nodes, and said gateway node encapsulates, when the set conversion type indicates aggregation, the received packet containing the set pre-conversion identifier by using the set post-conversion identifier and transmits the encapsulated received packet, and replaces the pre-conversion identifier with the set post-conversion identifier for the received packet containing the set pre-conversion identifier when the set conversion type indicates transfer and transmits the received packet added with the post-conversion identifier.