[PLUG] Calculating CIDR Range

[Rich Shepard]

On Fri, 28 Apr 2006, Jason R. Martin wrote:

> No, you write 1.2.128.0/17.  1.2.128.0/20 would give you the range
> 1.2.128.0 through 1.2.143.255.  The /17 is the number of bits set in
> the 32-bit netmask from left to right, and thus the number of bits to
> determine the network.  The remaining bits are used to determine
> unique hosts:

   Thanks for the refresher, Jason. It's been a very long time since I looked
at this.

Rich

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