04-04-2006 09:34 AM - edited 03-03-2019 02:38 AM
I have a company with 13 offices. Each of the offices has anywhere from 6 - 40 nodes. Also I am considering VOIP so I may need some address for that. Currently I have a site to site VPN with configure each site with the following IP's ranges;
172.16.0.0916 Site 1
172.17.0.0/16 Site 2
172.18.0.0/16 Site 3
172.20.0.0/16 Site 4
172.21.0.0/16 Site 5
172.22.0.0/16 Site 6
172.23.0.0/16 Site 7
172.24.0.0/16 Site 8
172.25.0.0/16 Site 9
172.26.0.0/16 Site 10
172.27.0.0/16 Site 11
172.28.0.0/16 Site 12
172.26.0.0/16 Site 13
I have been told that these are not valid private address. Are these valid address? If not what would be a good address scheme? Are there any sample private IP schemes that I can look at?
A couple of other notes:
Thanks
Kevin
Solved! Go to Solution.
04-04-2006 09:52 AM
The Internet Assigned Numbers Authority (IANA) has reserved three blocks of the IP address space for private internets:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
Reference RFC1918
04-04-2006 12:02 PM
Kevin
As Nick points out there are reserved addresses for private use which include addresses in the range 172.16.0.0 through 172.31.255.255. So in general I am not sure what the objection was and believe that what you list are valid private addresses.
There are a couple of details in what you posted that probably are errors in typing (but if not they would present problems with your addressing scheme). You list these ranges:
172.26.0.0/16 Site 10
172.26.0.0/16 Site 13
I am assuming that you meant 172.29.0.0 for site 13.
I also note that you skipped over address 172.19.0.0 and am not sure if it was on purpose or not.
HTH
Rick
04-04-2006 09:52 AM
The Internet Assigned Numbers Authority (IANA) has reserved three blocks of the IP address space for private internets:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
Reference RFC1918
04-04-2006 12:02 PM
Kevin
As Nick points out there are reserved addresses for private use which include addresses in the range 172.16.0.0 through 172.31.255.255. So in general I am not sure what the objection was and believe that what you list are valid private addresses.
There are a couple of details in what you posted that probably are errors in typing (but if not they would present problems with your addressing scheme). You list these ranges:
172.26.0.0/16 Site 10
172.26.0.0/16 Site 13
I am assuming that you meant 172.29.0.0 for site 13.
I also note that you skipped over address 172.19.0.0 and am not sure if it was on purpose or not.
HTH
Rick
04-04-2006 04:52 PM
Yes those were typos.
Thanks Nick and Rick.I was starting to doubt myself. In the past month a senior tech at an ISP and a programmer with a PHD told me it was wrong.
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