you can break it down with vlsm and reclaim most of the space.Duck
----- Original Message -----
From: Brian Lodwick <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, December 20, 2000 4:25 AM
Subject: ip subnetting
> Group,
> In determining valid subnetworks it used to be true all were valid
accept
> the all 1's subnet and the all 0's subnet. In an environment where all
> devices are compatible, I understand, that by using the configuration
> command "ip subnet-zero" it enables the use of the all 0's subnet. The
> question I ask then, wouldn't that leave the all 1's subnet still an
invalid
> subnet even when using the previous mentioned command? or is there
something
> else that allows the all 1's subnetwork? I have been asked this question,
> and I don't feel I am correct. The new formula noted in the CCNA book
notes
> the new equation for determining the amount of valid subnetworks is 2^# of
> subnet bits, and I figured it would be 2^#of subnet bits - 1 (for the all
> 1's subnet). I don't pose this question without first a bit of research
and
> everything I have read indicates the "ip subnet-zero" command only enables
> the use of the all 0's subnetwork. I however cannot find anything
indicating
> the use of the all 1's subnet is permitted. Any help is appreciated.
>
> >>>Brian
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