1

Are hub and repeaters the same? And the same applies for switched and bridges? Since I am finding hub/repeaters and switch/bridge in some books while hubs/switch in others. Also in which layers do they operate?

1

A Ethernet Repeater extends the usable range of ethernet cabling so it is not the same as a hub. This is a layer 1 device. You might be getting confused with the name "Repeater" and the function of a hub. Or you could be referring to Multiport Repeater which is just another name for a Hub function.

A Hub is also a layer 1 device. It repeats data out from a source port out every other port. Collision is heavy on a hub.

Bridges are layer 2 devices. They exist to physically seperate LAN segments. One of the only decisions a bridge makes is whether to forward or drop a frame. They are different than a switch as a switch can separate LAN segments on the same hardware using VLANs.Switches generally consist of a multitude of ports, while a bridge may only have one.

1
  • hub and repeater are functionally identical. switch and bridge are functional identical. Repeater and bridge are old words. (and in fact, a hub is a defunct thing today, too) And a bridge will always have two, or more, ports -- a single port would have nothing to bridge as the tech predates VLANs.
    – Ricky
    Mar 9 '15 at 21:44

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.