Hubs

Video Activity
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Time
1 hour 26 minutes
Difficulty
Beginner
CEU/CPE
2
Video Transcription
00:02
Hello. My name is Dustin and today will be continuing our beginner network infrastructure course with hubs. Let's when get started.
00:11
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.
00:30
This is known as a broadcast. It doesn't care what else is connected with. Every device is going to get that information
00:38
because all the ports are always getting copies of the traffic. This can degrade performance quite a bit.
00:45
If you've got 100 megabit hub with five ports, that 100 megabits is going to be shared across all five ports.
00:54
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.
01:07
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?
01:23
So in a network diagram or map, hub is represented as a single small three D box with just one arrow.
01:30
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.
01:40
In the previous slide, I described a typical five port. Make your hub
01:44
here. We've got a few smaller hubs that again are typically found on desks or small live environments.
01:51
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.
02:04
So quiz question. If my computer sends a package to Ports one and a network hub, what happens to that package?
02:12
And we're just saying, Keep it real simple here.
02:15
So, basically, if your computer sends a port into Packet one, it will then be broadcasted out all the other ports on that hub.
02:27
So setting up a hub is very simple because there's no configurations or anything you need to dio,
02:32
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.
02:45
Then you plug in the power
02:47
imports, which is usually on the back of the Hub.
02:51
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.
03:08
In today's video, we discussed what a hub is,
03:12
um, how
03:14
it looks and how it operates and also how to set up a network hub.
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