In Nexus Data Broker, what is the difference between monitoring device and service node? I'm able to add monitoring devices in NDB, but not service node. Any idea?

Recently I've migrated a filer from 6509 to 4900M. I copied the same setup from 6509 to 4900M, but It caused problem. On the filer, a virtual interface is trunk between 4 physical interface sharing the same mac address and IP. The setup on 6509 was t...