Patent ID: 9515926
Filing Date: 2016-12-06
CPC Classification: H04L

Claim Text:
1. A communication system, comprising: a core network comparing a lower layer switch that holds control information associating at least one match condition including lower layer header information, and processing content, and processes a received packet using control information having a match condition that matches the received packet; a first upper layer switch, disposed at a first edge of said core network, which rewrites a prescribed region of a header of a lower layer of a packet with content associated with communication content of an upper layer, wherein said first upper layer switch comprises a layer 7 switch that distinguishes at least one application; a second upper layer switch, disposed at a second edge of said core network, which rewrites the prescribed region of the header of the lower layer rewritten by said first upper layer switch, to prescribed content indicating a transmission source; and a control apparatus that instructs said first upper layer switch to rewrite the prescribed region of the header of said lower layer, sets control information including, in a match condition, header information after said rewriting, in said lower layer switch, and instructs one of said first upper layer switch and said second upper layer switch to convert a layer 4 port number of the received packet to a number range associated with an application type.