Location and Function in the network: The Hub also know as the network, active, repeater or multi-port hub is a device that connects multiple Ethernet devices together and making them act as a single network segment
Description: A hub works at the physical layer of the OSI model. It works by repeating bits recieved from one of its ports to all other ports. It is aware of physical layer packets, that is it can detect their start and idle line and sense a collision which it also propogates by sending a signal jam.
Limitations of device: A hub cannot further examine or manage any of the traffic that comes through it. A hub has no memory to store any data in a packet must be transmitted while it is received or is lost when a collision occurs. Due to this hubs can only run in half duplex mode.
Sustainability: Hubs are now largely obsolete, having been replaced by network switches except in very old installations or specialized applications
Description: A hub works at the physical layer of the OSI model. It works by repeating bits recieved from one of its ports to all other ports. It is aware of physical layer packets, that is it can detect their start and idle line and sense a collision which it also propogates by sending a signal jam.
Limitations of device: A hub cannot further examine or manage any of the traffic that comes through it. A hub has no memory to store any data in a packet must be transmitted while it is received or is lost when a collision occurs. Due to this hubs can only run in half duplex mode.
Sustainability: Hubs are now largely obsolete, having been replaced by network switches except in very old installations or specialized applications