Title:
CONTROLLER, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2014/042141
Kind Code:
A1
Abstract:
In order to reduce the load on a controller that responds to transmission requests for control information from a switch, the controller is provided with a control information management unit, a transmission request storage unit, and a request processing unit. The control information management unit contains match conditions, and manages control information for processing packets that conform to the match conditions. The transmission request storage unit stores unprocessed transmission requests for control information, from among transmission requests from a switch under control for control information for processing packets received by said switch. The request processing unit: selects, from among the control information managed by the control information management unit, control information having a broad match condition; selects, from among the unprocessed transmission requests for control information stored in the transmission request storage unit, a transmission request for unprocessed control information in which a default value that is checked against the match condition conforms to the control information having a broad match condition; and responds to the switch that was the source of the unprocessed transmission request for control information with the control information having the broad match condition.
Inventors:
SASAKI TAKAYUKI (JP)
NAKAE MASAYUKI (JP)
MORITA YOICHIRO (JP)
SHIMONISHI HIDEYUKI (JP)
SONODA KENTARO (JP)
HATANO YOICHI (JP)
YAMAGATA MASAYA (JP)
NAKAE MASAYUKI (JP)
MORITA YOICHIRO (JP)
SHIMONISHI HIDEYUKI (JP)
SONODA KENTARO (JP)
HATANO YOICHI (JP)
YAMAGATA MASAYA (JP)
Application Number:
PCT/JP2013/074343
Publication Date:
March 20, 2014
Filing Date:
September 10, 2013
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04L45/42; H04L45/74
Domestic Patent References:
| WO2011118566A1 | 2011-09-29 | |||
| WO2012105677A1 | 2012-08-09 |
Foreign References:
| JP2004356953A | 2004-12-16 |
Other References:
NICK MCKEOWN, OPENFLOW: ENABLING INNOVATION IN CAMPUS NETWORK, 14 March 2008 (2008-03-14), Retrieved from the Internet
OPENFLOW SWITCH SPECIFICATION (VERSION 1.1.0 IMPLEMENTED ( WIRE PROTOCOL 0X02 )), 28 February 2011 (2011-02-28), Retrieved from the Internet
OPENFLOW SWITCH SPECIFICATION (VERSION 1.1.0 IMPLEMENTED ( WIRE PROTOCOL 0X02 )), 28 February 2011 (2011-02-28), Retrieved from the Internet
Attorney, Agent or Firm:
KATO, Asamichi (JP)
Asamichi Kato (JP)
Asamichi Kato (JP)
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