Do you know any shortcut to solve this kind of problem:
Implement an access list to block the odd numbers of 255.248.0.0
Thanks,
Billy
""Donald B Johnson Jr"" <[EMAIL PROTECTED]> wrote in message
018a01c03e11$a659e810$[EMAIL PROTECTED]">news:018a01c03e11$a659e810$[EMAIL PROTECTED]...
> 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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