thanks j
never thought of it that way
used to do it the long way
Duck
----- Original Message -----
From: J Rowley <[EMAIL PROTECTED]>
To: Keith Townsend <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Tuesday, October 24, 2000 10:44 AM
Subject: Re: Inverse Mask
>
> It represents the netmask (255.248.0.0) for the network. The easiest way
> to get from an inverse mask to a regular netmask is like this:
>
> 255.255.255.255 fill 'er up
> - 000.007.255.255 subtract the inverse mask
> ---------------
> 255.248.000.000 real netmask
>
> So, if you have a 0.7.255.255 inverse mask, it equates to 255.248.0.0.
> Likewise, if you had 0.0.15.255, the mask would be 255.255.240.0.
>
> You can also take the normal mask and get the inverse mask by doing the
> opposite.
>
> 255.255.255.255
> - 255.248.000.000
> ---------------
> 000.007.255.255
>
> -j
>
>
> 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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