update subnet to avoid ip overlap (#149)

* update subnet to avoid ip overlap Signed-off-by: bobz965 <[email protected]> * fix: syntax Signed-off-by: bobz965 <[email protected]> --------- Signed-off-by: bobz965 <[email protected]>
kubeovn · Jan 25, 2024 · 01de0b9 · 01de0b9
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diff --git a/docs/guide/subnet.en.md b/docs/guide/subnet.en.md
@@ -8,6 +8,8 @@ Unlike other CNI implementations where each node is bound to a subnet,
 in Kube-OVN the Subnet is a global level virtual network configuration,
 and the addresses of one Subnet can be distributed on any node.
 
+Note: Different subnets under the same VPC cannot contain the same IP, and different subnets connected to each other based on VPC peering or VPN cannot contain the same IP.
+
 ![](../static/default-vpc-topology.png)
 
 There are some differences in the usage and configuration of Overlay and Underlay Subnets,

diff --git a/docs/guide/subnet.md b/docs/guide/subnet.md
@@ -5,6 +5,8 @@ Namespace 下的 Pod 会自动从所属的子网中获取 IP 并共享子网的
 
 和其他 CNI 的每个节点绑定一个子网的实现不同，在 Kube-OVN 中子网为一个全局的虚拟网络配置，同一个子网的地址可以分布在任意一个节点上。
 
+注意：同一 VPC 下的不同子网不能包含同样的 IP，以及基于 VPC peering 或者 VPN 互相打通的不同子网不能包含同样的 IP。
+
 ![网络拓扑](../static/default-vpc-topology.png)
 
 Overlay 和 Underlay 的子网在使用和配置上存在一些差异，本文档将会介绍不同类型子网的一些共同配置和差异化功能。