Preconditions for SNMP and Netflow collection
Network access
SNMP
SNMP proxy server(s) need to access the CPEs on SNMP port 161/UDP.
Netflow
Your CPEs need to export Netflow data on the Netflow proxy servers port 2055/UDP.
SDWAN
To enable REST API (to an SDWAN server) collection, the ports 80/TCP and 443/TCP have to be opened between the REST API collector and the SDWAN servers.