fp6 information day, brussels febryary, 3 rd 200 3 research topics on ipv6 and next generation...
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FP6 Information Day, Brussels Febryary, 3rd 2003
Research topics on IPv6 and Next Generation Internet
Addressing
J.Soldatos , G. KarestosNational Technical University of Athens
Contact e-mail: [email protected],
FP6 Information Day, Brussels Febryary, 3rd 2003
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
FP6 Information Day, Brussels Febryary, 3rd 2003
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
FP6 Information Day, Brussels Febryary, 3rd 2003
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
FP6 Information Day, Brussels Febryary, 3rd 2003
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
FP6 Information Day, Brussels Febryary, 3rd 2003
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
FP6 Information Day, Brussels Febryary, 3rd 2003
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