RE: Supernetting or CIDR

Yea, I think I mis-spoke. Lengthening the mask would be subnetting.
Shortening the mask would be supernetting and both are examples of CIDR
and VLSM. Thanks

RE: Supernetting or CDIR

Ryan West
to:
Keegan.Holley_at_sungard.com, CC IE
08/11/09 04:40 PM

Cc:
Cisco certification, "nobody_at_groupstudy.com"

CIDR actually encompasses all three examples, but the /24 is a natural
class C and the /23 is a supernet :)

CIDR is based on VLSM.

-ryan

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Keegan.Holley_at_sungard.com
Sent: Tuesday, August 11, 2009 3:54 PM
To: CC IE
Cc: Cisco certification; nobody_at_groupstudy.com
Subject: Re: Supernetting or CDIR

In general supernetting is making the mask larger than the classful mask.
CIDR is making it smaller. In practice I don't think it matters much.

192.168.0.0/24 is actually neither because 192.168/24 is class C. However

192.168.0.0/25 would be CIDR.
192.168.0.0/23 is a supernet.

HTH,

Keegan

From:
CC IE <cciestriker_at_gmail.com>
To:
Cisco certification <ccielab_at_groupstudy.com>
Date:
08/11/2009 03:40 PM
Subject:
Supernetting or CDIR
Sent by:
nobody_at_groupstudy.com

Hi

if i used 192.168.0.0/24 is subnetting then
192.168.0.0/23 ip scheme in my network, is this supernetting or CIDR.

Regards
Dora

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Received on Tue Aug 11 2009 - 21:17:20 ART