IPv6 : managing the transition

Laurent Toutain

Sujets

• Glucose-6-phosphate
• 1A 0620-00
• RFC Houdinois
• Liste des personnages d'Astérix le Gaulois
• IPsec
• Protocole opératoire

Informations

• Publié par: Napheg
• Nombre de lectures: 73
• Langue: English
• Poids de l'ouvrage: 4 Mo

Extrait

IPv6 Tutorial G6 Last modified on: 7 Jan 2003 by [e-mail] Contributions Main authors – Laurent Toutain, ENST-Bretagne – I RISA, France – B ernard Tuy, Renater, France Contributors – O ctavio Medina, ENST-Bretagne, France – M ohsen Souissi, AFNIC, France – V incent Levigneron, AFNIC, France – T homas Noel, LSIIT, France – A lain Durand, Sun Micro syste ms, USA – A lain Baudot, France Telecom R&D, Franc e – B ill Manning, ISI, USA – D av id Kessens, Qwest, USA – P ierre-Emmanuel Goiffon, Renater, France – J érôme D urand, Renater, Franc e G6 T u tori al 2 Agenda Why a new version for IP? IPv6 Protocol Address formats, addressing architecture Protocols associated to IPv6 IPv6 support in the DNS (DNSv6) IPv6 Mobility IPv6 Security with IPsec Early experiences and deployments IPv6 and OS/applications IPv4 / IPv6 integration Equipment Configuration Conclusion G6 T u tori al 3Why a new version for IP ? G6 T u tori al 4 Historical facts 1983 : Research network for ~ 100 computers 1992 : Commercial activity Exponential growth 1993 : Exhaustion of the class B address space Forecast of network collapse for 1994! G6 T u tori al 5 Emergency measures Allocate exceptionally class B addresses Re-use class C address space CIDR ( Classless Internet Domain Routing ) – R F C 1519 (PS) – n etwork address = prefix/prefix length – l ess address waste – r ecommend aggregation (reduce routing table length) G6 T u tori al 6 Emergency Measures: Private Addresses (RFC 1918 BCP) Allow private addressing plans Addresses are used internally Similar to security architecture with firewall Use of proxies or NAT to go outside – R FC 1631, 2663 and 2993 NAPT is the most commonly used of NAT variations G6 T u tori al 7Emergency Measures (continued) Public address space Private address space Internet Company G6 T u tori al 8Public address space Private address space 10.1.1.1 Proxy: 192.1.2.3 128.1.2.3 Internet Company G6 T u tori al 9Network Address Translation Public address space private address space Internet Company Routable address poo l G6 T u tori al 10