Network Devices

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12 hours 9 minutes
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This is less than 13.3 network devices network devices You should know in this lesson we're gonna go through a series of network devices on these are devices that you'll need to know for the company. A plus as well as in your role, is a technician in your world of trouble shooting and maintaining customer networks in equipment. So
let's go ahead and jump in and get started.
The network interface card with Nick Card, as is commonly known most common interface for connecting devices to the network.
Desktops, laptops, printers, industria devices, projectors, phones, et cetera.
All of them have network interface cards. They come into 10 100 from fiber wireless, et cetera. They come through all of those different connection types in connection mediums.
Now primarily, they're on board. But there are many ad on com cards as well. Slow in the computers we've learned from earner lessons. You can put him on via an ad on card,
so the network interface card,
a repeater,
a repeaters role is extending connective ity due to network limitations. It's simple logic it receives. It regenerates the signal and recent it That's it just straight simple logic common uses for repeater or how you will see them. It extend copper or copper to fiber. Convert one media toe, another
in the image here. These are media converters,
and, as you can see, they're taking fiber in and we'll convert it out to copper on the U. T. P port.
This is a repeater with multi ports in it. You can see here that it has six ports in it. More time Port repeater receives from one regenerate and out to multiple.
Ah, simple logic again. Receive regenerate, rescind
half duplex speeds. They're only 10 100 highest speeds and throughput. They're not really used today, these repeaters, but we've moved on to switches.
Ah, bridges, another device that we don't use primarily today, either. It's a predecessor to the modern switch. It's two or four ports, and there's 14 decisions. Was based on Mac addresses. Connected physical networks, wireless T Ethernet don't work to an access point or something along those lines.
So this is the network bridge again. No longer use
its predecessor is the switch
switches. These are the newer bridges of today that are faster, smarter and do a lot more things than the previous bridges. The bridging is done in hardware we to scale up and faster than before. Its uses something called the application Specific Integrated circuit or a six
forwards. Traffic based on the data link address
many ports and features. Some types provide power power like P. Li switches. Now some switches are motel layer and how routing functionality. Those will be layer three switches that will make routing decisions based on I P addresses.
Now in the former switches we have unmanaged versus manage switches now on unmanaged switches. Very few options plug and play. No interface in a low price point. You need connectivity to multiple devices, and that's about it. You would get an unmanaged switch. There's no interface. There's no configuration. You plug your
devices into that and your Internet connection or your network is shared among multiple devices,
whereas a manage switch were Viju. More functionality has an interface camping ability. You can web into it and make configuration changes. Supports V lands or the 802 On one cue, you can click to other switches to form trunks and switch networks.
Traffic prioritization spanning tree or STP protocol.
Port nearing is when you want to say, For instance, Mirror are poor because you have to do some network analysis. You'll you a plug in device and one poor and mirrors the traffic under the other. Port has that capability
because it has all these features. They're gonna be in higher price port. So you would find these morn in large corporate or enterprise networks,
routers, routes. I P Traffic makes 14 decisions based on the I P address. Can route from the Internet to land or land to land.
Connects different types of networks as well. Land way in copper fiber and wireless That is the right routers, rolling responsibility, wireless access points, or w a piece. They extend the wired network to wireless clients.
Now they forward device configuration from the from the server from the
router to the client. So when the client connects, they'll get all the D. C. P information, the gateway, the D. N s. And, of course, an I. P address as well
does not make decisions on its own. It's an extension of the wire network. It's a way for wired his clients to get onto the wire network. It's a type of bridge, more mess if you can think of it that way.
Cloud based network controller
A lot of times when you see a when you're in an organization and you see a lot of access points on the ceiling, those access points are generally managed by a either on land based network controller or a cloud based network controller.
It's a centralized management of wireless access points.
The management functions it provides is it can deploy new hardware, picks it up automatically and sit on a configuration to it.
It monitors the performance and security of those devices out in the network,
and you can configure from one too many devices all at once. Usually, these are proprietary, meaning. If you have a brand of access points, you want to get that brand of controller. And many different brands have their own types of controllers, so this is a way to either
managing by the network or in cloud based.
If it's cloud base, you can manage multiple locations. You can manage the multiple locations of the excess point in Network A at this facility, and because of the cloud access managed, the wireless devices in local location be all through one controller
firewall protects the network by filtering ports and applications. Generally, firewalls operate on us. I Layer four applications are applications sevens, and that will be a Layover seven device. If it's a that type of firewall,
Anika also proxy traffic. Some models will have layer three capabilities and provide routing. DCP etcetera can encrypt traffic in and out the network. Provide remote or site. Decide VP ends
Cable modem provides Internet at multiple frequencies. Doc Sis or data over cable service interface specifications. What dock's means Multiple service is provided in today's cable modems. Data voice and video.
High speed. Four megabits Up to 250 megabits is the normal packets speeds that you'll get. What your cable modem service. Gigabit speeds are available as well.
The A. D S L Motome Asymmetrical Digital subscriber line A. D s. L. This is the competitors to cable. Uses phone lines instead of a cable, for it's bringing in the Internet to your device.
The download is faster than than the upload. That's why it's asymmetrical. That's what that means. One is faster than the other distance limitation with the D. S. L, though, is 8000 to 10,000 feet from the phone company Central office of the C E O
speeds up to 52 megabits for download and up to 16 megabits for upload. And but speeds were very depending on your location and how far away and how close you are to the phone company, CEO,
patch panel and cabling
generally and offices. You're gonna have offices with workstations, A lot of work station's a lot of users, one desktop computers, I P phones and everything that needs cabling, connective ity to the network.
The cabling will either go through the floor, go through the ceiling or through power poles around. It's somewhat to get back to the cabling room.
In the cabling room, you're gonna have what's called a patch panel.
And in the back of your patch panel, your word's gonna come down and going to be punched down on the one T in block of the patch panel, and they will be punched down and either a Siri's a wiring or be wiring, which we learned about in previous lessons. And on the front of that patch panel,
you're gonna have a patch cord that goes from that
correlating port to that patch panel to the switch.
So that is the entire circuitry from a desktop computer that's out of the office. And that wire goes, you know, through the floor through the ceiling, all way back to the network closet, down into the back of the patch panel, where its punch down
and on the front of that, that corresponding port that connects to that wired it's punch down. You'll put a patch accordion from that port to the switch, and therefore that user on the floor is connected to that port on that switch.
Say, for instance, that user needs to change networks. Or do we need to put him on a villain? Because they are, They were in accounting, but now they're moving to another form of the business that use a different or separate villian. We don't have to rewire the wire or unpunished, unpunished that wire and punch it down somewhere else.
We take that patch court out of the switchboard and plug into a different switchboards. Or if it's a man and switch,
we log into that switch and make the conversion on that port on that port.
That's the beauty of the wiring and the cabling in the patch panel.
When you have standard wiring like this, you wire it warrants, and you don't have to make changes unless there's a problem with the wiring. And you want to be sure also that that corresponding patch panel is matching that wire. So labeling from the patch panel to the jack or pork out on the office floor
is really required sport troubleshooting purposes.
And here we can see the front of the patch panel in the data center of data room wires again, up firmly installed in terminated. You don't have to move wires around once they're installed on label. That's it. You can patch them to a switch in different devices.
Power of Ethan and appeal. He power provided over the Ethernet com line. Power Injector provides power and network connectivity. One cable connects to the network in the other two. The device that is being powered. This is also known as a mid span, and you could see from the P Lee right there on the right.
You have one cable for power on one cable for data.
Also, you can get power or Ethan it in the form of a switch power of Ethan that switch provides power from the switch port to the inn. Device this is built in is also known as a in span,
and you can see the switch right there. In this image. It is a gigabit p o e switch, and again your power's provided right there from the switchboard. On that switch
and reverse of that would be Ethernet overpower Rio or E. O. P. Also known as Power Line Communication PLC.
It's an IEEE 1901 standard bread upto 500 megabits a second. Intra building locations, smart devices extend networks were cabling is not present. I have personally used these devices in several different situations and again, where cabling is not provide or we can get cabling.
E o. P. Device works out very well.
Use some models. You just plug right into the electrical, let in one room and you plug your device into it and you go to the other room and plug in the electrical outlet in the other room and put a patch cord into your work station or whatever you're trying to get on the network and there you have it. It's connected through the network, but using the power line.
Okay, so we have stepped through a lot of different service's and equipment that you should know for the county in a plus. So
that is it for this lesson, and we will see you in the next lesson.
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