(19)

(11)

EP 2 697 940 A1

(12)

(43) Date of publication: 19.02.2014 Bulletin 2014/08 (21) Application number: 12771779.1 (22) Date of filing: 16.04.2012

(51) International Patent Classification (IPC):  H04L 12/437(2006.01) (86) International application number: PCT/CN2012/074091 (87) International publication number: WO 2012/139531 (18.10.2012 Gazette 2012/42)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 15.04.2011 CN 201110095948 (71) Applicant: Hangzhou H3C Technologies Co., Ltd. Zhejiang 310053 (CN)	(72) Inventors: CHEN, Jinjun Beijing 100085 (CN) GUI, Yongzhong Beijing 100085 (CN) (74) Representative: Rees, Simon John Lewis et al Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)