A stackable hub is a hub designed to be connected and stacked or positioned on top of another hub, forming an expanding stack. Since a hub is basically a concentrator of device connections, a set of stackable hubs is just a bigger concentrator. The stackable approach allows equipment to be easily and economically expanded as a grows in size. The stacking feature also reduces clutter.
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Typically, devices with network interface cards (NIC) are connected to each hub with shielded twisted pair (STP) or unshielded twisted pair (UTP) cable. The set of stackable hubs is interconnected with a very short "cascading" cable in the rear of the stack. A special port, such as an Ethernet Attachment Unit Interface (AUI) port, may be provided to connect the set of stackable hubs to a backbone cable that connects to other sets of stackable hubs or other network devices.
Typical stackable hub options include:
- The ability to mix hubs, router, and other devices in the same stack
- Fault tolerance so that if one hub fails, the other hubs in the stack can continue to operate
- port redundancy so that if one port fails, a backup port can be automatically substituted
- Hardware and software to let you manage the stackable hubs using the Simple Network Management Protocol (SNMP)
Continue Reading About stackable hub
- Lucent's LANNET offers an illustrated data sheet about its LANstack SH-E8/16/24 Stackable Ethernet Hubs.