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Research topics on IPv6 and Next Generation Internet Addressing. J.Soldatos , G. Karestos National Technical University of Athens Contact e-mail: jsoldat@telecom.ntua.gr , karetsos@softlab.ece.ntua.gr. IPv6 & Alternatives Addressing framewroks. IPv6 target objectives:
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Research topics on IPv6 and Next Generation Internet Addressing J.Soldatos , G. Karestos National Technical University of Athens Contact e-mail: jsoldat@telecom.ntua.gr, karetsos@softlab.ece.ntua.gr
IPv6 & Alternatives Addressing framewroks • IPv6 target objectives: • Tackling with Address Depletion • Automatic Address (Re)configuration • Security Issues • Support for various traffic types / QoS • Host Mobility /Ad-hoc networks • Address Depletion Solutions: • IPv6 friendy • Non-IPv6 friendly (NAT based) • … both sharing common concepts
Alternative Addressing Frameworks • Anti IPv6 strategies: • Researched in the U.S • Pledge simpler and smoother deployment (e.g., IPv4 retention, fewer deployment phases) • Either intermediate or permanent solutions (I.e. forerunners of a fully fledged IP6 solution) • Common reaserch topics with IPv6 • Prominent Alternative (Overlay) Frameworks: • IPNL (IP Next Layer) – P. Francis / Tahoe Networks • TRIAD / WRAP – Stanford University
IPNL – IP Next Layer • IPNL: • http://www.ipnl.net, • Ipv4 / NAT based solution to impove scalability & size problem • New layer above IP routed by NAT boxes (10 bytes addressing) • Fully Qualified Domain Names (FQDN) for e2e host identification • IPNL address space = globaly_unique_addr (IPv4)+private_address • Site addressing isolation from global addressing • Maximazes infrastructure resuse minimal deployment costs
TRIAD • TRIAD / WRAP: • http://www.dsg.stanford.edu/triad, • Framework for Internet Content Delivery • Path based addressing ( IPv4) extensible addressing (also Mobility, VPN, Policy Routing, Source Spoofing) • DRP – Directory Relay Protocol for name lookup (content layer) • Wide Area Relay Addressing Protocol IP encapsulation, IRT (reverse forward tokens) • Reduces average packet overhead
NTUA research targets • Alternative addressing frameworks: • Routing complexity, overhead, performance • Robustness • Multicasting • VoIP deployment in WRAP, BGP for IPL, … • IPv6 migration: • Explicit tunnelling and 6to4 co-existance • Dual Stack efficiency • IPv6 adverstising & DNS implications • Tools: • Linux & Free BSD based IPv6 testbed • Simulation (NS-2 based) – Scaling & Robustness study
Conclusions • Alternative addressing frameworks exist: • Advantages & Drawbacks • Interim & Permanent solutions • EU research should focus on these as well: • Completeness regarding migration schemes • IPv6 to incorporate any important aspets & concepts • NTUA aims at studying both friendly and non-friendly IPv6 strategies towards defining the optimum transition strategy • Also, Conventional IP research issues (QoS, Securiry, Service & Network Management, applications) should be studied