Intercluster peering requirements

Hello Experts,

We are currently setting up a new FAS2554 system runinng OnTAP 9. I was revewing the prerequisites for cluster peering. It says 2 ports per node are required. The FAS unit we have only has a single controller in it. Will cluster peering work in a single controller enviroment or do we require a HA setup? This system is running a single controller as it s a backup NAS.

Thanks