Difference between hub and bridge 2020.

Hello Friends, In this blog post we are going to discuss the difference between hub and bridge.


A hub is a number of input lines that it joins electrically as shown in fig 1 below.


Frames arriving on any of the lines are sent out on all the others. If two frames arrive at the same time, they will collide; just as on a coaxial cable.

The entire hub forms a single collision domain.

All the lines coming into a hub must operate at the same speed.


A bridge connects two or more LANs as shown in fig2 below.


When a frame arrives, software in the bridge extracts the destination address from the frame header and looks it up in a table to see where to send frames.

In a bridge, each line is its own collision domain, in contrast to a hub.

A bridge may have a line card for different network types and different speeds.

See the details on the Router and Switches…

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