Seisho Yasukawa is a Technical Leader at NTT Network Service System Laboratories, where he leads P2MP TE protocol development for NTT's business unit. Most recently Seisho has been focused on designing and developing rfc2547bis based IP Multicast VPN protocol and its service solutions. Seisho Yasukawa received B.E. and M.S. from University of Tokyo in 1993 and 1995. He is active in IETF standardization and one of co-authors of P2MP solution/requirement and new MVPN draft.