21_service_port.png shows the Service Ports with Node Service Ports and Cluster Service Ports window pane. From top to bottom are the following components:
A Node Service Ports window pane with SSHD field for changing the node service port number.
A Cluster Service Ports window pane with Read-Write Peer Listener Port field for changing the cluster service port number.
A Table with columns left to right, Node ID, Node Name, IP Address, Listener port, and Status.
A Change Port button in the Cluster Service Ports window pane.
A Change Port button in the Node Service Ports window pane.
A Cancel button on the top-right part of the Service Port window.