NETWORK SYSTEM AND ROUTING METHOD Russian patent published in 2016 - IPC H04L12/717 H04L12/70 H04L12/753 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to routing means, each of a plurality of switches executes, with respect to a received packet which satisfies a rule of an entry registered in its own flow table, an operation based on an action defined in the entry. A controller registers an entry, in which an identifier unique to a path calculated based on a physical topology of a network consisting of said plurality of switches is set as a rule and an output from a predetermined output port as an action, in each of the plurality of switches before communication is started among said plurality of switches. The method includes detecting the physical topology of the network and classifying the plurality of switches into edge switches and core switches in topology detection before communication is started; assigning an unique identifier to each of the edge switches; calculating a path between the edge switches and registering a relay entry in a flow table of a core switch, the relay entry indicating that when an identifier of a predetermined edge switch is described in a field of destination information of a received packet, the received packet must be forwarded to the next switch.

EFFECT: low frequency of processing flow tables.

10 cl, 6 dwg