Detailed tutorial covering IP address and CIDR allocation, name resolution, and DNS. Includes examples, tools, and references. http://www.samspade.org/d/ipdns.html
John S. Quaterman explains how to avoid renumbering IP networks. Originally published in SunExpert Magazine, November, 1997. [PDF format] http://swexpert.com/C7/RS.C2.NOV.97.pdf
S. Lee Henry explains how to understand and calculate netmasks. Originally published in SunExpert Magazine, May, 1998. [PDF format] http://swexpert.com/C4/SE.C4.MAY.98.pdf