1 hour 26 minutes
Hello. My name is Dustin and today will be continuing our beginner network infrastructure course with hubs. Let's when get started.
So what is a hub? A. Hub is typically considered a dumb device, meaning that they don't make any decisions about fording packets and don't really have any configuration options. When one port on the Hub receives a packet, it's copied out to all of the other ports.
This is known as a broadcast. It doesn't care what else is connected with. Every device is going to get that information
because all the ports are always getting copies of the traffic. This can degrade performance quite a bit.
If you've got 100 megabit hub with five ports, that 100 megabits is going to be shared across all five ports.
Typically, hubs are smaller devices like this. Netgear one here is roughly the size of a small book and has five network ports on the front, with a power ports in the back.
This hub is designed to sit on a desk thing to make larger hubs that are meant to be mounted in network wraps racks with a lot more ports. But this is what you'll commonly see When were you looking at hubs?
So in a network diagram or map, hub is represented as a single small three D box with just one arrow.
The Hub label typically gives the information about the hub like the location of it, the speeds that may support and what connections that may have.
In the previous slide, I described a typical five port. Make your hub
here. We've got a few smaller hubs that again are typically found on desks or small live environments.
These devices aren't usually smaller. We have ports on the front, with a led traffic indication light on a power port in the bag.
So quiz question. If my computer sends a package to Ports one and a network hub, what happens to that package?
And we're just saying, Keep it real simple here.
So, basically, if your computer sends a port into Packet one, it will then be broadcasted out all the other ports on that hub.
So setting up a hub is very simple because there's no configurations or anything you need to dio,
so all you need to do in order to set up a network hub as first plug in your network cables. Whether you've got 15 arm anymore, you just push it straight in until you hear the click.
Then you plug in the power
imports, which is usually on the back of the Hub.
Again, there's no configuration required. There may be a power button, so click that you'll see the hub come on, and the network lights indicate whether traffic or not, is flowing.
In today's video, we discussed what a hub is,
it looks and how it operates and also how to set up a network hub.
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