DO NOT design your network like this!! // FREE CCNA // EP 6

**Sponsored by Boson Software

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0:00 ⏩ Intro
0:42 ⏩ a BAD NETWORK
4:04 ⏩ the 2-tier Network Design
11:08 ⏩ the 3-tier Network Design
16:10 ⏩ look at this MASSIVE switch!!

It's time to get your CCNA!
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AFFILIATES & REFERRALS
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[RobbieFPV]

Thanks to this video my home network is more expensive than my actual home.

[NathanTesta]

This generally isnt a 'Noob Network Engineer' issue, this is generally a budget limitation of a small business.

[markc]

This guy lives in the corporate mindset, which is how I was educated. When I went into the small business space, it's about keeping costs under control.

[meirzula]

Thank you for your excellent vid, as always!
Today I passed the CCNA 200-301 exam with a 925 score!
The material and resources I found the most useful are,
ExamHighPass CCNA 200-301 practice exam.
I can confirm that it is valid for 2022. Most of their Q&A shows are at the actual exam.

[johnlarkin]

"How to build a small home business network for $40 Million."

[ChedWick]

"No one said networking is cheap"

Especially when you go cisco.

[neorandy]

As support manager for a software company serving the legal community, I got a call one day from a LARGE law firm in midtown Manhattan saying our software was just to slow for them. With a conference coming up in a week or so, the sales manager asked if I could troubleshoot the problem if I was on site. I popped into their office and they showed me their networking closet, with stacks and stacks of HUBS. That was a short visit. As soon as they dumped the hubs for switches, they called to say all was well! (Nearly 25 years ago!)

[markomus]

As a self-employed man, I am the IT department. I looked at which tier I had set up. It only brought me to tears. 😀

[atn]

iam using "as long as it work" tier

[BotraxDiaz]

A Catalyst in a coffee shop indicates money laundering.

[ahabsbane]

I've been in the trades for 25 years, 10 of them as a network tech, I've only ever seen two 3 tier networks, one was my local government center. Can't tell you the pride I feel knowing I personally terminated 24 cables to each of the thirteen 911 desks, on top of the hundreds of miles of cable just in the data center. The other was a global company they had two juniper switches similar to the Cisco one you showed. According to the documentation, each chassis was about a hundred grand, as well as each individual routing engine. 6 per chassis, all tolled 1.5 mil just on tier 3. Then there was the 6 racks of tier 2 switches...

[lullylew]

There's one thing you do that's a cut above most channels - You're excited and enthusiastic about everything you share. I cannot stress how beneficial that has been for myself learning from your videos. You have retained a sense of wonder and it's brilliant. Absolutely stellar.

[azharmall]

my company's network design has no tier,
but this does bring tears in my eyes every now and then

[henmasman]

I just want to point out for smaller networks with a lower budget, you can link multiple access switches between eachother in a full or partial mesh, to achieve redundancy. Before you do that make sure you read up on Spanning tree protocol.

[djohnsto]

All really good points! One thing I've been challenged with in the past is small business office networks without a full-time IT person. Then you have this trade-off between reliability and simplicity. With growing businesses sometimes they are stuck in-between the SOHO and enterprise models until they get a couple of good contracts to pay for proper IT staff.

[natestrings]

So cool to get to this video on my journey. I was working on a Cisco 4510R+E as a hands on technician and although they called it the “core switch” I had no idea what they meant! Getting to this video brings to light how immense their network layout must have been, and now knowing this makes me feel like I’m one step closer to becoming a qualified engineer. Thanks so much Chuck!

[mungrel]

Company I work for is getting super high tech, they've just ordered 30 tin cans and 500ft of string!
Enjoying the vids, learning a lot!

[jdenslinger]

OK, so, to get rid of single point of failure:
2 sources of electrical service - two mains companies, or more often, mains + generator
2 data backbones - primary and secondary ISPs.
2 routers on each ISP - primary and backup. (that's 4 routers)
2 main (l3) switches - each connected to all 4 routers.
2 LAN switches - connected to both l3 switches
2 data cables to each drop.

And this is where we start getting into ad-nauseum. Spend $15000 setting up a business... $20k for the network.

If your business can't take a 10 minute outage without completely failing - you're doing /that/ wrong.

[norththelaughingfox]

Recently Iv been getting incredibly burned out when it comes to studying due to the lack of engaging study material.

Your video to the contrary was engaging, interesting, and full of positive energy. It doesn’t just provide the information in an easy to digest way, it makes me actively want to engage with the material and learn it to the best of my ability.

Keep up the good work, and thank you for helping to make my studying a little easier.

[EB-imfu]

Not surprising this guy gets tons of views, the way he explains and teaches is fun. I barely noticed that the video was about to end. When time flies watching a video then the creator is doing something right. My attention span is usually very short but this guy always manages to consistently keep my eyes glued to the screen and listening attentively.