On Mon, 2002-08-26 at 09:27, Anne Wilson wrote: > On Monday 26 Aug 2002 2:06 am, you wrote: > > On Sun, 2002-08-25 at 12:56, Miark wrote: > > > > In some previous posts I have noticed people refering to their IP > > > > address range as xxx.xxx.xxx.xxx/xx. > > > > > > > > Just curious as to what the /xx refers to. Is it some type of range? > > > > > > CIDR notation takes advantage of this numbering trick to represent the > > > whole submask by only counting how many bits represent machine numbers. > > > So 192.168.0.1/8 is 192.168.0.1/11111111.11111111.11111111.00000000 > > > or 192.168.0.1/255.255.255.0. > > > > Almost correct. The number to the right of the slash (e.g., the "24" in > > something like "192.168.1.1/24") is the "prefix length" or number of > > bits in the network number and subnet mask. > > > > This means that "192.168.0.1/8" really identifies host address > > "192.168.0.1" from network "192" and subnet mask "255.0.0.0". > > > > Another example is "192.168.1.1/24". This specifies the network > > "192.168.1", the subnet mask "255.255.255.0" and the host address > > "192.168.1.1". > > > > Now I'm really confused. In my reading for my lan I was told that /24 was > the correct entry for a class c network. My net is 192.168.0. with subnet > mask 255.255.255.0 - are you saying that /24 is wrong? If so, what should it > be?
I presume that you were confused by the original poster rather than by my followup since the example you cite is nearly identical to the one I used. Applying /24 to 192.168.0.1 we get 192.168.0.1/24. This refers to host address 192.168.0.1 on network 192.168.0 with subnet mask 255.255.255.0. Seth [EMAIL PROTECTED]
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