Browsing on a computer running under Windows NT is based on a per protocol basis. In other words, there is a master browser for each protocol. Computers running only the NetBEUI protocol register with the master browser computer running the NetBEUI protocol. Computers running only NetBEUI get the master browser list from the master browser running NetBEUI. Because computers running only the TCP/IP protocol register with a master browser running TCP/IP, these computers will not be on the master browser list from a computer running only NetBEUI.