TCP/IP Addressing Quiestion

Cisco Cisco871-sec-k9 871 integrated ser...
July 23, 2010 at 07:32:02
Specs: Windows Vista, P4/1gb
I'm in the process of learning TCP/IP. Having trouble understanding the following: / 16

What is the 16 telling me? I've been reading document after document on this and cant grasp it. Hoping someone can break it down for me. (I know the 16 can change, this is just an example).

Thanks in advance everyone.

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July 23, 2010 at 07:51:13
The /16 is CIDR (Classless Inter-Domain Routing) notation

Google that (CIDR notation) and read the wikipedia page. It's a pretty good explanation of what it is, why it's used and how it's used.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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July 23, 2010 at 07:54:01
The 16 means the subnet address is 16 bits long. This leaves 32 - 16 bits for the host address. The subnet mask is Anything addressed to the range of to will be sent to this subnet.

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July 23, 2010 at 08:37:31

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