Networking Hub in detail. What is Cisco Hub - Networking Services

Networking Hubs are really multiple port repeaters. A repeater receives a digital signal and amplifies it or regenerates the digital signal, then forwards the digital signal out all active ports without observing any data. An Active hub does the same thing. Any digital signal received on a hub port is regenerated or reamplified and transmitted out all ports on the hub.

This means all devices plugged into a network hub area unit within the same collision domain as well as within the same broadcast domain. A broadcast domain is defined as all devices on a network segment that hears all broadcasts sent on that segment.



Networking Hubs, like repeaters, do not look at any traffic as they enter and are transmitted out to the other parts of the physical media. Hubs create a physical star network where the hub is a central device and cables extend in all directions, creating the physical star effect.

However, Ethernet networks use a logical bus topology. This means that the signal has to run from end to end of the network. Every device connected to the Networking hub, or Networking hubs, must listen if a device transmits.

Cisco Networking Hub

It is hard for me to imagine that you would call Cisco and ask to buy a Networking hub, but We suppose it does happen or they wouldn’t be selling them. Cisco really has an in-depth listing of hubs that address a tremendous kind of choice problems. Before you buy any hub, you need to know not to think you know, but actually, know which users can use a shared 10Mbps or shared 100Mbps network.

The lower-end model of hubs Cisco offers supports only 10Mbps, while the middle-of-the-road one offers both 10- and 100Mbps auto-sensing ports. The higher-end hubs provide network-management port and console connections. If you are going to spend enough to buy a high-end hub, you should consider just buying a switch. 

These are the selection issues we need to know:

  • Business requirements for 10 or 100Mbps
  • Port density
  • Management
  • Ease of operation

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