Cird block overlap

Cloud AWS
#1

i want to create subnet on the default PVC ,
172.31.0.0/16 is automatically choosing by the system

Choose the VPC’s IPv4 CIDR block for the subnet.
The subnet’s IPv4 CIDR must lie within this block. 172.31.0.0/16

but it doesn’t any range of 172.31.0.0/16 ,
i got error msg CIRD BLOCK OVERLAP

anyone can help what’s the issue?

#2

Hi,

It indicates that your subnet has a range overlapping another subnet with the default VPC. Check the IP ranges of any existing Subnets, and use a CIDR visualizer like https://cidr.xyz/ to see what ranges are available for a new subnet.

When you say doesn’t any range of 172.31.0.0/16. Probably, there is a subnet consuming all the IPs from the VPC.