VNET [21Vianet] SC 13G/A: (Original Filing)
[CUSIP No. 90138A103 13G Page 2 of 15 Pages 1 NAMES OF REPORTING PERSONS/I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Cisco Systems International B.V. ( CSIBV ) 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ¨ x (a) 3]