We got 2-node AlwaysOn environment in same subnet but due to risks identified with network configuration, these Server nodes (both) will be moved to a new subnet (each node to different subnet) and we need to update all the IP addresses (Server nodes, Cluster, Listener) and also now the environment will become a Multi-Subnet environment.
Most of the posts mainly talk about moving 1-node to a new subnet but couldn't anything where both nodes being moved to new subnets.
I understand we will need additional IP's for listeners (multi-subnet) but can anyone provide a high-level steps (and order) in changing all these IP address and the impact to SQL when each of these steps are implemented ?