Commonly used in Ethernet and Fibre Channel networks to improve the manageability of physical cables. Unlike switches , hubs do not aggregate bandwidth. Hubs typically support the addition or removal of nodes from the bus while it is operating. A port on a Fibre Channel hub whose function is to pass data transmitted on the physical loop to the next port on the hub. Hub ports include loop healing port bypass functions.
Some hubs have additional management functionality.
There is no definition of a hub port in any Fibre Channel standard. FC-PH does not presently specify how a hunt group can be realized.