As the following figure shows, connect ce0 and ce9 on phys-sun to ce0 and ce9 on phys-moon by using switches.
This connection forms the private interconnect.
The use of switches in a two-node cluster permits ease of expansion if you decide to add more nodes to the cluster.
On each cluster node, connect from ce1 and ce5 to the public-network subnet.
On each cluster node, connect from ce2 and ce6 to the management network subnet.