Dictionary · Networking Hardware
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Devices · Beginner
A legacy device that repeats an incoming electrical signal out every port. All attached devices share one collision domain and can see the same transmissions.
It has no table of hardware addresses. Everything it hears is copied to everyone else, which is why switches replaced it.
Example: Four computers plugged into one of these devices all receive every frame, and only one should transmit at a time.
Common misconception
- It is not a security boundary or a router. It is a shared electrical repeater.