Implicit in the concept of summarization is that all possible subnets are
included in the sumarization. A summary of 172.16.0.0/22 would include four
subnets (172.16.0.0, 172.16.1.0, 172.16.2.0, 172.16.3.0). The first 22 bits
of all addresses are the same. Only the last two change. (00, 01, 10, 11).
172.16.1.0/22 is not correct. BTW since summarization works on powers of two
the beginning address will always be an even number.
172.16.0.0/22 works but does not include the first subnet. Geoff's answer
covers only the stated subnets.
> -----Original Message-----
> From: Daniel Boutet [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, October 19, 2000 10:32 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Summarization
>
>
> Ok, I am joining in a little late since the answer to the question is
> complete. I was wondering Geoff why are you stating " but since the
> 172.16.0.0 is not included" What do you mean? You've lost me.
> The rest of your explanation is also not understood.
> I started learning about "summarization" and I need further
> explanation if
> you do not mind.
> Thanks
>
> Daniel
>
> ""A. Geoffrey Cauchi"" <[EMAIL PROTECTED]> wrote in message
> 014001c039b8$d7037e70$[EMAIL PROTECTED]">news:014001c039b8$d7037e70$[EMAIL PROTECTED]...
> > 172.16.1.0/22 is not correct. 172.16.0.0/22 would be the
> correct syntax,
> > but since the 172.16.0.0 is not included, I would aggregate these 3
> networks
> > as:
> >
> > 172.16.1.0
> > 172.16.2.0/23
> >
> >
> > Geoff
> >
>
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