Think Classless..

Erhan



--- "McCallum, Robert"
 wrote:
> gt = greater than so gt /23 = subnets with a mask of
> above /23.
> lt = less than so lt /17 = subnets with a mask less
> than /17.
> 
> so using prefix lists can you give me an answer
> which would do the following:-
> 
> 1. Deny subnets of class B networks
> 2. Deny supernets of Class C networks
> 3. Deny networks starting 193.x.x.x
> 4. permit all else.
> 
> For the 1st one ask yourself what makes a class B
> network a Class B network?  From this you will find
> out what your /x prefix should be.  Then what mask =
> subnets of a class B network gt or lt.
> 
> and so on
> 
> -----Original Message-----
> From: dk [mailto:[EMAIL PROTECTED]]
> Sent: 04 February 2002 12:07
> To: [EMAIL PROTECTED]
> Subject: prefix lists .. [7:34312]
> 
> 
> Can anyone help me get a handle on the "ge" and "le"
> options on  prefix
> lists?
> I find them totaly confusing.
> 
> Thanks in advance for any advice offered
> 
> David
>
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