Configure the cluster infrastructure subnet range

Before you begin

• Review the table to determine valid start and end IP addresses for the /27 CIDR blocks you plan to use.

• The first four IP addresses in each subnet (including the network address) are reserved by AWS. Configure the CclSubnetRange to begin with the fifth IP address in the subnet.

The table shows the valid start and end IP addresses for each /27 CIDR allocation.

CclSubnetRange mapping

CIDR	Start IP Address	End IP Address
x.y.z.0/27	x.y.z.4	x.y.z.30
x.y.z.32/27	x.y.z.36	x.y.z.62
x.y.z.64/27	x.y.z.68	x.y.z.94
x.y.z.96/27	x.y.z.100	x.y.z.126
x.y.z.128/27	x.y.z.132	x.y.z.158
x.y.z.160/27	x.y.z.164	x.y.z.190
x.y.z.192/27	x.y.z.196	x.y.z.222
x.y.z.224/27	x.y.z.228	x.y.z.254

Complete these steps to configure the cluster infrastructure subnet range.