Patent ID: 9525613
Filing Date: 2016-12-20
CPC Classification: H04L

Claim Text:
1. A communication system comprising: a control device that sets a processing rule in a forwarding node; and a plurality of forwarding nodes provided with a packet processing device that performs processing of a received packet based on said set processing rule, wherein at least one forwarding node among said forwarding nodes operates as a logical channel control device that establishes a logical channel to an external node having a private address, generates a virtual port associated with said logical channel established to said external node, and gives notification thereof to said control device, the notification including a correspondence between the virtual port and a network to which the external node belongs, wherein said control device establishes, according to the notified correspondence between the virtual port and the network, a forwarding path corresponding to the logical channel established between the external node and a user terminal device, wherein the logical channel control device comprises: wherein the logical channel management device includes a table which stores a logical channel number, a network attribute, flow information, and an internal interface (IF) number.