<a href="http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800a67f5.shtml">This </a>is a good link.
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The search feature here on ITKE returned, among others, these 2 previous questions. Have a look:
<a href="http://itknowledgeexchange.techtarget.com/itanswers/subnetting-3/">Subnetting</a>
<a href="http://itknowledgeexchange.techtarget.com/itanswers/tcpip-subnetting/">TCP/IP subnetting</a>
Hi,
Another link you would like to look into is:
http://articles.techrepublic.com.com/5100-10878_11-6089187.html
Very clearly explained.
Good luck!
Roy
Last Wiki Answer Submitted: August 11, 2009 9:59 am by carlosdl63,535 pts.
All Answer Wiki Contributors: carlosdl63,535 pts. ,
mshen27,310 pts.
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The book TCP/IP For Dummies and Wildpacket’s IP Subnet Calculator….by far.