Re: Netmasks in form of yyy.yyy.yyy.yyy/x
Scott Laird (scott@laird.com)
Thu, 27 Feb 1997 19:36:46 -0800
In message <Pine.GSO.3.93.970227145546.3613A-100000@butthead>, dave writes:
>
>Hi all. Can someone point me to some documentation on what exactly that
>means? How does it differ from normal subnetting, and when would you use
>it? I read this in the IP-Masq faq, but I'm just generally interested in
>knowing what it is for larger networks...
It's just a shorter form for writing the network address and netmask.
The yyy.yyy.yyy.yyy part is the network number and the /x is the
number of bits of 1s at the top of the netmask. So, 206.63.100.0/24
is a fairly normal class C network. Divide that in four pieces, and
one of them will be 206.63.100.64/26. It's a lot easier to write /26
then 255.255.255.192.
Scott