On 9 Jun 99, at 19:12, Jules wrote:
> This is a newbie question, I've checked almost every resource available to
> me, but I still don't really grasp this concept, so if anyone can clarify
> it for me, I'd be grateful.
>
> How does one read addresses like 172.168.10/24 or 172.16.51.50/32 ?
>
> In particular, what does the slash signify what does it do in the above
> case(s).
This is the "CIDR" format for subnet specification. Instead of a separate
subnet mask in dotted notation, the number after the slash indicates the
number of high-order "on" bits in the subnet mask. So "/24" corresponds to
255.255.255.0 and "/32" to 255.255.255.255.
This notation is more compact, and it's easier to write the masks for
subnet addresses that don't fall on octet/class (the "C" in CIDR stands for
"Classless") boundaries.
David G
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