Architecting a vRealize Operations Management Solution : Appendix A: vRealize Operations Port Requirements : 13.2 vRealize Operations Manager – Management Pack for NSX
   
13.2 vRealize Operations Manager – Management Pack for NSX
The information in the following table summarizes the network exchange flows required for proper interaction of the Management Pack for NSX for vSphere.
Table 10. VMware NSX Management Pack Port Requirements
Port
Number
Protocol
Source
Target
Description
VMware NSX API port
443
TCP
vRealize Operations Manager (all nodes within a cluster)
VMware NSX
General API port
SNMP listening agent
161
TCP/UDP
vRealize Operations Manager (all nodes within a cluster)
All physical network devices
Used for physical discovery of devices (optional)