Ascend Archive
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Re: (ASCEND) Pool summary not working, any ideas?
On Mon, Jan 19, 1998 at 08:55:59AM -0600, ascend@digistar.com wrote:
> On Mon, 19 Jan 1998, William T Wilson wrote:
>
> > > > seem to work for us. One of our pools is the first subnet in
> > > > 194.64.165.0 (mask /27, 255.255.255.224). The first (useable) pool
> > > > address is 194.64.165.1, pool count is 30.
> > >
> > > Shouldn't that be 194.64.165.32/27? 194.64.165.1/27 was illegal the last
> > > time I checked.
> >
> > No, it's right, look closer :) He sez that his network is
> > 194.64.165.0/27, which is legal. The first usable address for such a
> > network IS 194.64.165.1, because x.x.x.0 is reserved.
>
> What i'm saying is the first subnet is not a valid subnet.
>
> 194.64.165.0/24 and 194.64.165.1/24 are valid, where 194.64.165.1/27 isn't
> because its network mask is pointing to a /24 subnet, not a /27 subnet.
> 194.64.165.30/27 isn't valid either, nor is 194.64.165.225/27.
Which was The Truth [tm] as of RFC950. It is no longer valid for
_more than a decade_ now. FMI: http://www.3com.com/nsc/501302.html
BTW: x.x.x.0 is by no means reserved. It just takes a /23 to make
half of the .0s pretty normal IPs in the middle of a net.
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