1. C 2001 NTT, All rights reserved. IP&MEDIACOM WORKSHOP2001 1. 1. IP-VPN standardization overview 2. BGP/MPLS VPN approach 3. Virtual Router approach 1 4. Virtual Router approach 2 5. Layer 2 MPLS VPN approach 6. IPSEC VPN approach IP5/IP6 : IP-VPN April 26, 2001 Session coordinator : Y. Maeda (Vice-chairman of ITU-T SG-13, NTT) Presentations IntroductionIntroduction

2. C 2001 NTT, All rights reserved. IP&MEDIACOM WORKSHOP2001 What is IP-VPN? VPN has become a hot issue, one of the new “killer application” of the IP based network, the Internet. Public network (Internet, FR, ATM, etc.) Public network (Internet, FR, ATM, etc.) Leased lines VPN Economies of sharing Flexibility Reliability Interoperability Economies of sharing Flexibility Reliability Interoperability VPN provides a private network virtually over the public network.

3. C 2001 NTT, All rights reserved. IP&MEDIACOM WORKSHOP2001 Session Objectives 1.To review the current VPN domain in standard bodies (ITU-T, IETF, MPLS F) and in the market, 2.To identify the main current topics on this VPN domain, 3.To identify the future standardization issues such as service requirements, network capabilities and required specific interface specifications.

4. C 2001 NTT, All rights reserved. IP&MEDIACOM WORKSHOP2001 4 14:00-14:10 Introduction (Y. Maeda, NTT) 14:10-14:30 IP VPN standardisation overview (M. Carugi, France Telecom) 14:30-14:50 BGP/MPLS VPN approach overview (H. Rakotoranto, Cisco) 14:50-15:10 A Virtual Router approach using BGP- autodiscovery and tunneling (T. Hubbard, Director, Nortel) 15:10-15:30 Hierarchical VPNs, Neighbor discovery & Broadcast Links in a Virtual Router approach (T. Walsh, Lucent) 15:30-16:00 Coffee Break Session Program : Part 1

5. C 2001 NTT, All rights reserved. IP&MEDIACOM WORKSHOP2001 5 16:00-16:20 Layer 2 MPLS VPNs (H. Avalos, Juniper) 16:20-16:40 IPSEC VPNs (H. De Neve, Alcatel) 16:40-17:30 Q&A panel Summary Session Program : Part 2