Here's the math..
255.255.255.255
-mask you'd expect
-------------------
inverse mask
so, the 0.7.255.255 inverse mask is what you'd typically see as a
255.248.0.0 subnet
Brian
On Tue, 24 Oct 2000, Keith Townsend wrote:
> I need help in understanding inverse masks that are used in network & access
> list commands. I understabd what 0 and 255 do but I get confused when there
> is any number other than these two. For example...
>
> network 10.0.0.0 0.7.255.255 area 0
>
> what does the 7 represent or specifiy for the mask.
>
> Thanks
>
> Keith
>
>
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