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OSDOCS-4401: Added clarity for CIDR ranges

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Eric Ponvelle
2022-11-10 16:21:02 -05:00
committed by openshift-cherrypick-robot
parent a5bbdb82c4
commit 283ca5387c
1 changed files with 4 additions and 0 deletions
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networking/cidr-range-definitions.adoc
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@@ -13,6 +13,10 @@ You must specify non-overlapping ranges for the following CIDR ranges.
Machine CIDR ranges cannot be changed after creating your cluster.
====
ifdef::openshift-rosa,openshift-dedicated[]
When specifying subnet CIDR ranges, ensure that the subnet CIDR range is within the defined Machine CIDR. You must verify that the subnet CIDR ranges allow for enough IP addresses for all intended workloads, including at least eight IP addresses for possible AWS Load Balancers.
endif::[]
[id="machine-cidr-description"]
== Machine CIDR
In the Machine CIDR field, you must specify the IP address range for machines or cluster nodes. This range must encompass all CIDR address ranges for your virtual private cloud (VPC) subnets. Subnets must be contiguous. A minimum IP address range of 128 addresses, using the subnet prefix `/25`, is supported for single availability zone deployments. A minimum address range of 256 addresses, using the subnet prefix `/24`, is supported for deployments that use multiple availability zones. The default is `10.0.0.0/16`. This range must not conflict with any connected networks.