Title:
NETWORK SYSTEM AND METHOD FOR ACQUIRING VLAN TAG INFORMATION
Document Type and Number:
WIPO Patent Application WO/2012/133060
Kind Code:
A1
Abstract:
With existing technology, inner tag information (VLAN ID information before being subjected to QinQ at the entrance to an openflow network (OF-NW)) attached to packets flowing through the OF-NW cannot be identified by a switch. Accordingly, an OF-NW configured by only one VLAN cannot deal with a plurality of VLANs. In the present invention, specifically, a controller deals with a plurality of VLANs in the OF-NW having only one VLAN, by mapping inner tag information attached to packets flowing through the OF-NW and flow cookie information indicating flow entries corresponding to the packets flowing through the OF-NW. More specifically, a flow entering the OF-NW is transferred from the switch to the controller, and the controller which receives the transferred flow learns the VLAN ID information at the entrance to the OF-NW, and maps the VLAN ID and the flow cookie information indicating flow entries corresponding to the packets in the OF-NW, to thereby deal with a plurality of VLANs.
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Inventors:
YOSHIDA HIROKAZU (JP)
SUZUKI YOJI (JP)
TAKASHIMA MASANORI (JP)
SUZUKI YOJI (JP)
TAKASHIMA MASANORI (JP)
Application Number:
PCT/JP2012/057218
Publication Date:
October 04, 2012
Filing Date:
March 21, 2012
Export Citation:
Assignee:
NEC CORP (JP)
YOSHIDA HIROKAZU (JP)
SUZUKI YOJI (JP)
TAKASHIMA MASANORI (JP)
YOSHIDA HIROKAZU (JP)
SUZUKI YOJI (JP)
TAKASHIMA MASANORI (JP)
International Classes:
H04L12/56; H04L45/42; H04L45/50
Domestic Patent References:
| WO2004095780A1 | 2004-11-04 |
Foreign References:
| JP2008527772A | 2008-07-24 | |||
| JP2004165794A | 2004-06-10 | |||
| JP2009177281A | 2009-08-06 | |||
| JP2009177282A | 2009-08-06 | |||
| JP2009201142A | 2009-09-03 | |||
| JP2011072153A | 2011-04-07 |
Other References:
OPENFLOW SWITCH SPECIFICATION VERSION 1.1.0 IMPLEMENTED, 28 February 2011 (2011-02-28), XP008166938
OPENFLOW SWITCH SPECIFICATION, 31 December 2009 (2009-12-31), Retrieved from the Internet
802.1Q TUNNELING (Q-IN- Q, 24 March 2011 (2011-03-24), Retrieved from the Internet
See also references of EP 2693708A4
OPENFLOW SWITCH SPECIFICATION, 31 December 2009 (2009-12-31), Retrieved from the Internet
802.1Q TUNNELING (Q-IN- Q, 24 March 2011 (2011-03-24), Retrieved from the Internet
See also references of EP 2693708A4
Attorney, Agent or Firm:
KUDOH Minoru (JP)
Minoru Kudo (JP)
Minoru Kudo (JP)
Download PDF:
Claims:
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