Extending the IP Internet Through Address Reus e Paul F. Tsuchiya, Bellcore, tsuchiya@thumper.bellcore.com Tony Eng, MIT, tleng@athena .mit .edu Abstract The two most compelling problems facing the IP Internet are IP address depletion an d scaling in routing . This paper discusses the characteristics of one of the propose d solutions address reuse . The solution is to place Network Address Translators (Nat) at the borders of stub domains . Each Nat box has a small pool of globally unique I P addresses that are dynamically assigned to IP flows going through Nat . The dynami c assignment is coordinated with Domain Name Server operation . The IP addresses insid e the stub domain are not globally unique they are reused in other domains, thus solvin g the address depletion problem . The pool of IP addresses in Nat is from a subne t administered by the regional backbone, thus solving the scaling problem . The main advantage of Nat is that it can be installed without changes to any existing systems , although FTP will fail in some but not all cases . This paper presents a preliminary design for Nat, and discusses its pros and cons
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Extending the IP internet through address reuse
Tsuchiya, Paul F.; Eng, Tony
Follow ACM SIGCOMM Computer Communication Review
, Volume 23 (1)
Association for Computing Machinery – Jan 3, 1993
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