How Does NetBrain Collect Data From the Network?
Almost everything NetBrain knows about the network is learned through Telnet or SSH. During the network discovery, NetBrain logs into every device it discovers to issue and analyze many CLI commands. NetBrain uses SNMP to identify the vendor make and model, so it knows the proper CLI syntax to execute. To kick off the discovery, NetBrain only needs the IP address of a core router or switch. It will learn the neighbors of that device via CDP, LLDP, and other protocols. This neighbor-walking discovery is very fast – discovering about 2,000 network devices per hour.