In general does each Netflow sensor need to receive data on a different TCP port? We have multiple routers with multiple interfaces and we are setting each interface on each router to send Netflow traffic to the same probe but each on a different TCP port. This means we will have about 30 different ports used for Netflow traffic. If we have a Router with two interfaces then I assume we have to enable Netflow on both interfaces and then have it sent to our probe.
Do I need to use a separate port for each Netflow sensor?