A networking topology in which hubs for workgroups or departmental local area networks (LANs) are connected by using a network bus to form a single network. Star bus topology is a combination of star topology superimposed on a backbone bus topology.
Graphic S-18. Star bus topology.
You can connect hubs by using one of the following:
When you use this topology with standard Ethernet hubs, do not create an excessively large collision domain by adding too many stations. This will degrade network performance unless you segment the network by using bridges or routers.