Comments by "Javier Flores" (@JJFlores197) on "DO NOT design your network like this!! // FREE CCNA // EP 6" video.

  1. For home networks, that's ok. But if you're talking about larger networks, its impractical to run an entire organization completely over wifi. As convenient as Wi-Fi is and as many improvements have been made over the decades, it still isn't the most reliable method of connecting computers to networks, especially if they need high performance networking. For your use case, you don't necessarily need any switches or cabling. If wifi works great for you, that's great. And not to be rude, but this is a video series on CCNA which deals with enterprise networking which involves routers and switches and network cabling.
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  2. You may be able to ask some of the IT people in your company, but whether or not they can give you that info is another question.
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  3. Its not a smart idea to run a network without a firewall. You typically want a router that supports 2 internet connections. I don't know if multilayer switches have that.
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  4. Yes he could have just used a L2 switch. L3 switches are an interesting concept since they're pretty much switches with routing capabilities. From my understanding, you use L3 switches when you have a lot of inter-network communication across many different switches.
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  5. A patch panel isn't a networking device per se. Its just an intermediary connection between a data jack and the network switch.
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  6. Do you guys have internet or are the PCS just on their own network without internet access?
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  7. There's a protocol called DHCP. I won't get into all the details, but in short, a DHCP server automatically assigns a device an IP address along with other important network information. Your ISP assigns your router a public facing IP address from its (the ISP's) DHCP server. Most home routers also act as DHCP servers for the devices inside of your network. Without DHCP, you would need to manually assign the IP address and network configuration to every single device in your network and keep track of what device has what address. As you can see, that will become extremely tedious very quickly and very confusing for the vast majority of average home internet users. That's one of many reasons why DHCP was created. You can assign an IP address manually, but how you do it depends on each device. Typically, you go to its network configuration settings and choose "Static IP" or manual IP or something similar and then enter the configuration manually.
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  8. A managed switch can be either Layer 2 or Layer 3. The managed portion just means that you can configure it. Unmanaged switches have no configuration options and are pretty much plug and play.
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  9. There are a few ways you can address this. Exactly which way you should do it depends on your network setup. The mid to high end home routers usually have settings you can setup to assign certain devices x amount of bandwidth and all other devices get more or less of the overall bandwidth. You can even go a step further with some routers with Quality of Service (QoS). You can assign application types higher priority over other traffic. For instance, you can give your gaming PC or consoles higher QoS compared to watching youtube videos, for instance.
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  10. No real way of knowing unless you can ask someone in the IT dept. Even then they may or may not tell you.
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  11. You're in the wrong video dude. There are countless video guides on gaming PC builds for flight sims. I don't think it will come out cheap though especially if you want a pretty realistic one like the new MS Flight Simulator.
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  12. I agree, but oftentimes it is very difficult to convince the upper managements to understand that.
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  13. Its not always that easy. Sometimes people just aren't given a good budget. I work in K-12 IT. We have about 20 sites, most being schools and a few administrative offices. All of our schools have an MPLS connection through AT&T, but there's no redundancy in the links.
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  14. You would need to buy a DSL modem compatible with your DSL provider. I don't know who your provider is or if they allow 3rd party equipment.
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  15. There's usually fiber infrastructure between buildings. Depending on how the buildings are laid out, the fiber can be run aerially or underground through conduits or both. If the buildings are too far away to feasibly wire them, you can use point to point wireless links. You typically have to install an antennae on the roofs of the building and point them at each other.
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  16. Cisco PacketTracer and GNS3 are good. GNS3 requires Cisco IOS files for the full functionality, but you can't get them unless you have an active Cisco contract which is very pricey. You don't need to buy dozens of things if you want real hardware. Just a Cisco router and switch will suffice for most people who are interested in this. I bought a Cisco router from eBay for about $100 5 years ago and a Cisco switch for about $50 or so.
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  17. You put the router in between the modem and switch. Putting in a network switch first won't really work. In order for your devices to go online, they need a public facing IP address. Most home ISPs only provide 1 public IP address so only 1 device would be able to go online. That's where the router comes into play. The router has something called NAT (also very important to learn for CCNA) which allows it to share a single public IP address with the devices inside of your home network.
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  18. It is possible, but very unlikely to build your own ISP. How are you going to get internet to sell to your customers? The big internet companies all connect with other internet companies via peering agreements with backbone links. Getting access to these links is extremely expensive. And most ISPs don't want you to resell their service. There's a website called Start your own ISP which gives you some general ideas.
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  19. What do you mean by hyrda switch? I haven't heard of that.
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  20. lol
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  21. It looks like you created a broadcast storm on your network. You may want to read up on it. You can't exactly fix this on typical home network switches since they aren't designed to be used in this way.
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  22. What are you blabbering on about? Your internet options depend on where you live. You'll need to check your local internet providers to see what services they offer in your area.
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  23. I prefer using wired as well, but realistically most consumers are using wireless. Its far more convenient for them and wifi has improved a lot over the years. I work in school IT and use a lot of wifi for student Chromebooks. We don't really have hard labs anymore so a lot of wired infrastructure is very under utilized. We still use ethernet for VOIP phones and access points and occasionally staff devices. Other than that, we primarily run on wifi and it has worked pretty good in the 4 years I've been there.
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  24. It looks like you have a double NAT issue. Your personal router and ISP router are on different subnets. There's no real reason to do this. If you want to use your personal router as the main router, you ideally want to put your ISP modem/router into bridge mode (if its a combo unit) or similar so that your router is the only router.
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  25. Yes you can install multiple network cards to a computer. It likely won't help improve network speed unless you setup some sort of link aggregation setup. If you need high performance networking on a PC, you're probably better off using fiber connections between your PC and your switch. However, this requires an SFP card.
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  26. lmao
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  27. What do you mean?
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  28. Yes you can do that. But oftentimes, in the enterprise, you don't connect switches with other switches with ethernet cables. Your switches and routers are usually interconnected via fiber links or DAC (direct attached copper) cable.
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  29. That's perfectly fine.
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