IP Addressing developed through several historical stages. The original classful addressing scheme in use in 1980 was augmented with subnetting in the 1980s, then supplanted by CIDR in the early 1990s. Each change introduced more flexibility into IP address design.

CIDR is the addressing scheme we have studied so far in this chapter. The remainder of this chapter focuses on how the earlier IP addressing schemes differ from CIDR, and what restrictions are imposed when backwards compatibility must be maintained.

Dies ist ein Mirror von Connected: An Internet Encyclopedia von Brent Baccala. Die offizielle Projekt-Homepage findet sich im Web unter www.freesoft.org/CIE. Dieser Mirror wurde zuletzt aktualisiert am Samstag, 28 Januar 2006 18:17 +0100.