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TOPIC: IP Addressing

IP Addressing 13 years 2 months ago #688

  • ningi
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Please explain in detail why the all zeros and all ones subnets are not used.

Help needed as soon as possible. :)
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Re: IP Addressing 13 years 2 months ago #689

  • tking357
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These addresses are reserved.

All zeros mean that the address is for this network or highway only.

All ones are used as a broadcast to all hosts on the network or highway.

Hope this is detailed enough!
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Re: IP Addressing 13 years 2 months ago #703

  • sahirh
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The answer above is correct, but since you said in detail.. the best places to look are the RFCs
www.ietf.org/rfc.html

or even better.. this little cisco document i dug up for you ;)

www.cisco.com/en/US/tech/tk648/tk361/tec...186a0080093f18.shtml


Hope it helps.
Sahir Hidayatullah.
Firewall.cx Staff - Associate Editor & Security Advisor
tftfotw.blogspot.com
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