CIDR Utilization

joel jaeggli joelja at bogus.com
Sat Oct 31 01:13:13 UTC 2015


most reasonable ipam tools will track or express unallocated vs
allocated space.

netdot has a lovely address-space container/block view for managing free
vs allocated space

joel

On 10/31/15 9:51 AM, John Steve Nash wrote:
> Hi,
> 
> I'm looking for any tool or a way I could specify a CIDR and the prefixes
> that are being used within this CIDR and the tool show me all free
> supernets.
> 
> Example:
> 
> 192.168.0.0/24 - CIDR
> 
> Used subnet's:
> 
> 192.168.0.1/32
> 192.168.0.8/27
> 192.168.0.64/26
> 192.168.0.68/32
> 192.168.0.96/29
> 
> Tool Result => Free Subnet's:
> 
> 192.168.0.2/31
> 192.168.0.4/30
> 192.168.0.32/27
> 192.168.0.128/25
> 
> Regards,
> 
> John
> 


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 229 bytes
Desc: OpenPGP digital signature
URL: <http://mailman.nanog.org/pipermail/nanog/attachments/20151031/224ebe45/attachment.sig>


More information about the NANOG mailing list