Skip to content

OSDOCS-18665-16: CP review for CORE-1 #108796

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
dfitzmau wants to merge 1 commit into
base: enterprise-4.16
Choose a base branch
from
Open

OSDOCS-18665-16: CP review for CORE-1 #108796

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 0 additions & 12 deletions networking/cidr-range-definitions.adoc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,18 +12,6 @@ toc::[]
[role="_abstract"]
To ensure stable and accurate network routing in {product-title} clusters that use OVN-Kubernetes, define non-overlapping Classless Inter-Domain Routing (CIDR) subnet ranges. Establishing unique ranges prevents IP address conflicts so that internal traffic reaches its intended destination without interference.

[IMPORTANT]
====
For {product-title} 4.17 and later versions, clusters use `169.254.0.0/17` for IPv4 and `fd69::/112` for IPv6 as the default masquerade subnet. You must avoid these ranges. For upgraded clusters, there is no change to the default masquerade subnet.
====

[TIP]
====
You can use the link:https://access.redhat.com/labs/ocpnc/[Red Hat OpenShift Network Calculator] to decide your networking needs before setting CIDR range during cluster creation.

You must have a Red Hat account to use the calculator.
====

The following subnet types are mandatory for a cluster that uses OVN-Kubernetes:

* Join: Uses a join switch to connect gateway routers to distributed routers. A join switch reduces the number of IP addresses for a distributed router. For a cluster that uses the OVN-Kubernetes plugin, an IP address from a dedicated subnet is assigned to any logical port that attaches to the join switch.
Expand Down