John Blakley Wed, 09/24/2008 - 06:17
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A network could be considered a collection of subnets.


A subnet is a subset of a network. :-)


HTH


John

John Blakley Wed, 09/24/2008 - 07:17
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An example would be:



The internet is a huge network


Within that network are multiple block of addresses


Think of it like a neighborhood. Neighborhood's consist of multiple houses.


The neighborhood is the network, and the multiple houses are you subnets.


Does that help?


Giuseppe Larosa Wed, 09/24/2008 - 07:53
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Hello Carl,

in ip addressing scenario the terms are:


networks or major networks are the classic A,B, C networks


class A: first bit is 0 in Most significant byte

networks 1-126 mask 255.0.0.0 = /8


class B: first two bits are 10 in most significant byte

networks 128-191 mask 255.255.0.0 = /16


class C: first three bits in MSB are 110

networks : 192 - 223 mask 255.255.255.0 = /24


IP subnets are defined as subsets of networks


example :


subnet 10.10.100.0/24

is a subnet taken from network 10/8 by extending of 16 bits the network to host boundary.


195.22.40.0/24 this is a network and not a subnet.


200.10.0.0/23 will be a supernet : the joining of two class C major networks the opposite of a subnet


Hope to help

Giuseppe


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