Site subnet question

Im creating a new subnet in sites and services. Range is starts at 35.131. Am I suppose to put x.x.35.131/27? Mask is 255.255.255.224. I try to put 35.131 but wont work. Ok is grayed out. It only works if I put 54.0/27
Thomas NSystems Analyst - Windows System AdministratorAsked:
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Adam BrownSr Solutions ArchitectCommented:
You would put in the full Subnet, so if it's 192.168.35.131/27, you would put the whole subnet IP in. You'll also want to make sure the subnet you're adding isn't part of an existing subnet. So if you have 192.168.35.0/24 as a subnet already, you can't add 192.168.35.131/27
Thomas NSystems Analyst - Windows System AdministratorAuthor Commented:
So I will just put 192.168.35.0/27?
MaheshArchitectCommented:
You should put cidr notation which will cover all subnets in range you have
Ex. 172.16.0.0/16 would cover all ranges from 16 to 31
Adam BrownSr Solutions ArchitectCommented:
Ah. I see the problem now. Had to get out a subnet calculator. 192.168.35.131/27 isn't a valid subnet. The CIDR notation requires that you use the first IP in the subnet for the IP portion. In your case, 192.168.35.128/27 is the CIDR notation of the subnet that includes 192.168.35.131. Make sense?

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