Its Monday morning and you're not fully in gear yet Terry (8-)
--
Howard.
______________________________________________________
LANNet Computing Associates <http://www.lannet.com.au>
On Mon, 17 Jul 2000, Terry Collins wrote:
> David Ryan wrote:
> >
> > G'day all,
> > I have subnetted a class C address space into 4 blocks. I would like to
> > further subnet one of those blocks into say 2 or 4 subblocks.
> >
> > I have read the mini-Howto but I am not sure how to do the
> > subsubnetting.
>
> Well, it is Monday morning and what the heck. I'm not sure how it
> goes, but this is how I think it goes, which someone can correct if
> wrong.
>
> 1 block
> 192.168.1.0-255 netmask 255.255.255.0
^^^^^^^^^^^^^ correct
>
> 2 blocks
> 192.168.1.0-127 netmask 255.255.255.128
^^^^^^^^^^^^^^^ correct
> 192.168.1.128-255 netmask 255.255.255.128
^^^^^^^^^^^^^^^ correct
>
> 4 blocks
> 192.168.1.0-63 netmask 255.255.255.64 <-- .192
> 192.168.1.64-127 netmask 255.255.255.64 <-- .192
> 192.168.1.128-191 netmask 255.255.255.64 <-- .192
> 192.168.1.192-255 netmask 255.255.255.64 <-- .192
>
> 8 blocks
> 192.168.1.0-31 netmask 255.255.255.32 <-- .224
> 192.168.1.32-63 netmask 255.255.255.32 <-- .224
> 192.168.1.64-95 netmask 255.255.255.32 etc.
> 192.168.1.96-127 netmask 255.255.255.32
> 192.168.1.128-159 netmask 255.255.255.32
> 192.168.1.160-191 netmask 255.255.255.32
> 192.168.1.192-223 netmask 255.255.255.32
> 192.168.1.224-255 netmask 255.255.255.32
>
> etc. Remember you loose the first and last (lowest and highest) out of
> each block as subnet/?? and broadcast address.
Correct.
The other subnet masks are:
16 blocks of 16 IPs .240
32 blocks of 8 IPs .248
64 blocks of 4 IPs .252 this is the lowest as it only gives you 2
useable addresses after the network and broadcast addresses have been
removed.
>
>
> --
> Terry Collins {:-)}}} Ph(02) 4627 2186 Fax(02) 4628 7861
> email: [EMAIL PROTECTED] www: http://www.woa.com.au
> or [EMAIL PROTECTED]
> WOA Computer Services <lan/wan, linux/unix, novell>
> snail: PO Box 1047, Campbelltown, NSW 2560.
>
> "People without trees are like fish without clean water"
>
>
> --
> SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/
> More Info: http://slug.org.au/lists/listinfo/slug
>
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