02-06-2008 08:27 AM - edited 03-05-2019 08:59 PM
Hi,
Can someone check if I am getting this right ?
If I have the following networks:
172.16.1.0/24
172.16.2.0/24
172.16.3.0/24
Then the best summary address is
172.16.0.0/22
And if my networks to summarize are:
172.16.11.0/24
172.16.12.0/24
172.16.13.0/24
Then my summary address will be:
172.16.8.0/20
And if my networks to summarize are:
172.16.14.0/24
172.16.15.0/24
172.16.16.0/24
My best network summary address is :
172.16.0.0/19
Regards,
Phil.
Solved! Go to Solution.
02-06-2008 08:41 AM
1. I would agree with you
2. You could do a /21
172.16.8.0 255.255.248.0 Networks 172.16.8.0 to 172.16.15.0
3. I would agree again
HTH
BTW- A great tool for subnetting/summarizing is Solarwinds IP Subnet Calculator (and it's free) http://www.solarwinds.com/products/freetools/free_subnet_calculator.aspx
HTH
02-06-2008 08:41 AM
1. I would agree with you
2. You could do a /21
172.16.8.0 255.255.248.0 Networks 172.16.8.0 to 172.16.15.0
3. I would agree again
HTH
BTW- A great tool for subnetting/summarizing is Solarwinds IP Subnet Calculator (and it's free) http://www.solarwinds.com/products/freetools/free_subnet_calculator.aspx
HTH
02-06-2008 09:22 AM
2 ... You could do a /21
I was a bit worried for a moment, but I only wrote 7 bits out instead of 8 when working this one out giving /20 instead of /21.
Thanks for your help and the calc link.
Cheers,
Phil.
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