Planning your Infastructure

NEW Cisco CCNA IPv4 Course! Introduction to Conversions and basic configurations
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Transcript

Welcome back everyone. No PowerPoint. Oh, planning your infrastructure. Okay, now this I want to keep it simplistic. This is an IP version four course. Okay, but we need to understand I had a time number one What's our IP scheme going to be?

Because if you can see here Yes, I like to play one little pencil. Alright, we have 192168102 dot 03 dot zero. Okay, so what does that mean? Is that a VLAN? Are we gonna use VLANs? Here?

Are we because now that will change things dramatically? Right? Because then we need to trunk ports over here. Okay, because if you don't, because right now as it stands that's one huge bra. domain and that was a problems in all the schools not all schools, but a good portion of schools that I taught at then ever VLAN anything out. Okay, so yeah, one big broadcast domains you have multiple collision domains.

That's great. Okay, but you think you're segmenting. What actually even if this guy says something, he's gonna go through last words, that's true just connected to this layer three switch right here because this is a this switch right here is a layer three switch. Oh, amazing. Has routing capabilities. Don't let anybody have a layer three switch.

Good for you. Okay, now layer three switch, routing capabilities, all right, but if you're not VLAN out, then what are you doing? So this is for nothing. You have to or you should create VLANs VLANs. Okay, again, there's another course for that but video VLANs this will be let's say VLAN 10, VLAN, 20, VLAN, 30, whatever, okay. And you give that VLAN name they say these are classroom classroom, 10 classroom 20 classroom dirty or whatever the classroom is, okay, you name it that VLAN to correlate with you to make it simple in your mind to remember Oh, there's a classroom model two is VLAN one or two all in the classroom, two to four is VLAN, two to four.

So things like that do something so I can remind you of because then you trunk the ports using the 80212 encapsulation, okay, then you work out obviously out, obviously, but you then apply an IP address to the switch and a default gateway. This will be a router on a stick type of scenario, which is not really recommended, but whatever it is, just to show you a simple thing, right on a stick, then you need to have sub interfaces. Inside the each of those sub interfaces will be the gateway for these guys right here. Alright, and then you have a serial cable. Okay, we know that right? So your cables clock rates later, we will, okay we have the clock are gone.

They're, you know, not nasty. Or maybe that's your edge router right there. That's our internal router out there. This one will go out to there's my version of the internet, okay, out to the cloud. So this kind of thing you need to understand, okay, how many devices will have a one network? Am I going to segment?

How am I going to segment? Am I going to segment using VLANs? Obviously, you will do that. Okay. So then you need to find an IP scheme. How big is the company going to grow?

Why does everybody use a Class C address? Remember, and we'll talk about this a little bit later on private and public addresses. Right? This is a private address. Why am I using a private classy? Why don't I use a private Class B, which gives me 65,536 available IP addresses.

Why don't I do that? Okay, that so I won't cut myself short. I don't know this company may go online and say you're selling stuff all the time. Wow. You got millions of sales, you got to hire millions of people and you're using a classy you're out of guys. Okay, so plan accordingly.

Think ahead. Are you gonna buy yourself? Oh, well, we only have three devices last I'm just gonna get a four port switch. Really? Okay, no, no, no. Okay, man, I you know, because now when you get to let her on to your other certification, they're gonna talk about blocks, which is really segments and I'm gonna keep everything within that block.

All right, so for traveling not to be generating through the Cisco three layer model remember access, access, distribution and core. I want to keep everything down here. Okay? So when you're planning things out when you walk into a building, let's say you just wiring is okay. What type of company is is what is their know their end goal? What do they want to achieve?

Or to do this is Roman Roman Catholic on cable all the way through, okay, and if you are running cat five cable, so what? Okay, you're running into a central location, which is could be your main distribution facility, your MDF, where your patch panels, your switches, your routers, your servers, all these main devices are going to be there your Point of Presence, your pop is going to be there. Okay? So when you're running these cables, remember their standards, there's rules, okay? That 90 degree returns nowhere near because high voltage and low voltage which is networking, okay can be together because you're gonna cause interference. All this planning is very important.

Down to the cabling down to the applause you're going to use on all on the cable, the jacks, you're gonna put on the friggin wall is very important that everything matches up together. Okay, and you got to test test, test, test, test baseline, okay, you need to make sure you do that. Okay, you need to create a baseline but definitely you need to plan. Where are these devices going to go? Are we gonna have closets? Are we just gonna have a switch?

Roll like they did in school. I don't believe they do that but they do in schools they do that that was switch in every room. Why? Why can the cable is I'll tell you why because they don't want to spend money that goes you will need to run every computer that's in there. Every wire to the closet to that patch panel. They didn't want to do that.

They just want to run from there to the switch. What cable to the closet. Well, why is that cable gets cut or gets frayed or gets twisted? Right Kapha twisted pair cabling is notorious for getting twisted. Okay, so the design Sit down. Take your time.

Look at the the existing design. See, okay, well, this should be really a layer three switch or Let's change from our router here at this site to a layer three switch. You don't need all that. Don't processing one off for this. We can go ahead. Oh my god, you're using hubs, what's going on here?

Usually switches, you know, your switches don't have enough flash or your routers don't have enough flash, your processing power is really not that big, you may need to upgrade your switches, things like this and you look at the wiring, you check the right I relaxed a little detail, you need to check out, check the network if you're doing consulting, obviously, but even if you're doing your own network and from scratch, you walk in you say okay, I'm in a warehouse. It's a concrete building concrete walls. So I'm not going to be going through the wall Are you gonna be going, you know, probably putting Jayhawks and you'll be putting, you know, a little fake little padding on the walls. You put your wires through, or your arm you with us right through the top, right on the hooks on the top of the ceiling, and then just running with pvcs down so you got to plan at all.

I mean, there's not a Kevin class into it, but you got to see where you're at. And you got to see what you have and what the goal of that company is and how big that company is going to get to say okay, Let's see, maybe we can do wireless. Okay, at certain areas, because many running a cable to that area will be not very good, you know, maybe not very wise is like, wow, we got to go to all this mess. Can we take wireless there you do your site survey, right? Your radio site survey your physical site surveys, Hey, is this any good? Am I getting any interference here?

Can we use a wireless network over here to return areas that normally you know, you can't, it'll be too tough to run cabling. So planning your infrastructure is extremely important. Okay, you just can't walk in and say, Yeah, I can do that. No problem. I just gonna cost you, you know, $1,000 Okay, and you spend the whole week or two weeks or three weeks or even a month, okay? And you're eight hours, 10 hours, 12 hours a day going and saying because things are not working right?

Because, again, down to the cable down to the plugs to the IP scheme. Because you can walk in and I can tell you for right now, personal experience. on a weekend. Again, this is my beginning. All right. Want to set up a wireless network, right?

And a building real estate company went in, there was a weekend there was nobody there. I put in my wireless router. plugged it into the network. Everybody had a wireless Nic card. You know, turn it on, connect it to the SSID. marrows flying, everybody was printing.

Everybody was doing everything. They're like, yeah, you're the man. Come Monday morning. They couldn't do anything. Why? Because everybody came to work.

And there were four there was water sitting in the same place. I put mine. Okay, so the interference was incredible that I do any site service. Nope. That I didn't check anything. I just wanted to go in there.

Get it done. Let it work. Hey, cool. No, then have to go back and run cable. So that's the stuff that I'm trying for you to avoid. Before you start saying anything or doing anything.

No, where are you going to go sit down up, what equipment is required? Okay? And how are you are going to strategically say, Okay, this will be the best way the most feasible way for your company because of the data that you're transferring money on something very good, very logical, so they can understand they go, there might not be it savvy like yourself, but you can explain it to them, you know, in a way where they can understand how it would benefit them. So planning your infrastructure is very important. Just this is a very simple network, very simple, you know, just being land, you know, trunking, okay, from switch to switch here, then you have a trunk trunk, this one as well. Then you have the router on a stick, and then you get to go out, this will probably be your Nat router, okay, from public to private, things like that.

So all these things come into play. We have to think before we just go and start setting things up. All right. So that's what I want you to do. That's why you need to get a full understanding only of the IP addressing that we're going to do here but also have the equipment That's in a network that you're putting IP addresses on. Alright.

See you in the next

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