RE: How to check the Subnets/Network in Summary Address

Hi

thanks for the reply I am using this method can you tell me is this a valid
ways

192.168.16.0 this is the summary address and subnet mask
255.255.248.0 summary address subnet mask

255.255.255.0 class C defautl mask
255.255.248.0 summary mask
-----------------------
0. 0. 7 .0

192.168.16.0
0 . 0 . 7. 0

start adding 7 to 16 = 17,18,19,20,21,22,23
--------------------
192.168.23.255 this is the total number of summary address
------------------------

192.168.16.0/21 summry address

M i Rite ???????

pls confirm this

> Date: Thu, 19 May 2011 16:53:59 +0100
> Subject: Re: How to check the Subnets/Network in Summary Address
> From: byronschen_at_googlemail.com
> To: roykhan123_at_hotmail.com
> CC: ccielab_at_groupstudy.com
>
> Hi Roy,
>
> This is a supernet address where you are summarising a block of Class C
> addresses.
>
> The summary address of 192.168.10.0/21 falls within the boundry of
> 192.168.8.0 - 192.168.15.255 class C's
>
> You have borrowed 5 bits from the 3rd octed i,e 2 ^5 - 2 = 30 subnets.
>
> 256 - 248 = 8. So count 8 16 24 32 40 48 etc...will give you the different
> blocks.
>
> I hope that this helps.
>
> Kind Regards
>
> Byron Chen
>
> On 18 May 2011 18:04, <roykhan123_at_hotmail.com> wrote:
>
> > Hi Guys
> >
> > I Have a question Please tell me If i have a Summary Address how i will
> > calculate which Network include in it.
> > For example If i say , I have a summary address of 192.168.10.0/21 and i
> > tell
> > you
> > how many subnets or network contain in this address how you will
calculate
> > it
> > Pls if any one knows the short cut reply to that email.
> >
> > the below are the summary addresses.
> > 1. 192.168.10.0/21
> > 2. 192.168.16.0 255.255.248.0
> >
> > Br
> >
> > Roy
> >
> >
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Received on Thu May 19 2011 - 22:42:07 ART