You can cable the controllers to your network by using the two-node switchless cluster method or by using the cluster interconnect network.
Cabling a two-node switchless cluster
Management network, data network, and management ports on the controllers are connected to switches. The cluster interconnect ports are cabled on both controllers.
Cabling a switched cluster
Management network, data network, and management ports on the controllers are connected to switches. The cluster interconnect and HA ports are cabled on to the cluster/HA switch.