Welcome to Cisco Certified DevNet Associate (200-901)

0:01I can still remember back in the late 1980s

0:04when I first got involved with computers first and then

0:07computer networking, how exciting it was.

0:09It was awesome.

0:09I also learned about the idea of setting up a batch file.

0:13So if we had like 5 or 6 or 100 things

0:15that we needed done all the time, and it was repetitive,

0:17and took a lot of time, why not put those puppies

0:19in a batch file or a batch job, and have them just

0:22happen all at once?

0:23Sort of like the early days of automation.

0:26Well, fast forward to today.

0:27Today, we have some fairly amazing networks

0:30with a lot of networked devices.

0:31Say hello to my little friend.

0:33What is this device?

0:34Maybe it's a switch, maybe it's a multilayer switch, and what

0:37is a multilayer switch?

0:39So as part of automating our Enterprise networks,

0:41it's important to have a basic understanding

0:44of what the network devices do and how

0:46end to end IP communications works on a network.

0:50So that's where I come into the picture with this dev net,

0:53is that they've asked me to come in and provide

0:55a really concise overview and information about how

0:59IP networks function.

1:00Why we have layers, what they mean, how they interact.

1:04And the reason that's important, it's

1:05important I think for three types of people.

1:07Number one, you're a programmer or a developer,

1:10and you're going to be doing network automation,

1:12and you're going to learn how to configure and manage

1:14network devices, lots of them.

1:16It's important for you to know what these devices do,

1:18and how they operate, so that we know

1:20when we're issuing commands or pulling information, having

1:23an idea of what these devices do on the network, what

1:25their function is, is it a load balancer?

1:27Is it a firewall?

1:28Is it a router?

1:29Is it a switch?

1:30How do they interact?

1:30How they behave, and how they all work

1:32with the TCP/IP protocol suite.

1:34The second person who would really

1:35benefit from my section of the dev net content regarding

1:39network fundamentals would be somebody who maybe has never

1:42taken a moment or two just to kind of really

1:44look at how the network functions.

1:46They're curious, they use the network all the time,

1:49they're familiar with some basic concepts,

1:51but they just want a nice tight overview

1:53of how end to end IP communications

1:56work in a practical, realistic way, including the TCP/IP

2:00protocol suite, application layers,

2:02and how routers and switches and firewalls and load balancers,

2:04how do they all fit into that.

2:05So I've created some nice, easy content

2:07that you can join to take as well.

2:09And the third element is for somebody who's new to IT.

2:13If a person is brand new to the world of information

2:15technology, and they're not sure where to start.

2:17The networking fundamental section of dev net

2:20is going to provide a really solid foundation for you

2:23to build on as you start to understand

2:25how the networks operate, and how they are glued together,

2:28and how data is forwarded as frames or packets

2:30across the network.

2:32So whatever category you happen to find yourself

2:34and whatever level of interest you

2:35have in computer networking, I invite

2:37you to join me for my section of the network fundamentals

2:40as part of dev net.

2:41Now the next step, after we have an understanding

2:43from the network fundamentals piece about how

2:45the network operates, the next piece

2:47is what is the infrastructure that

2:49can allow us to have really good network automation

2:52and control of our network?

2:53What are the pieces and parts and protocols

2:55that we want to have in place so we can actually

2:58do the network automation.

2:59And those pieces are going to be brought to you

3:01in this course by Knox Hutchinson and Ben Finkel,

3:04who are both amazing.

3:06You're going to love them both.

3:07Then, finally, after we have the knowledge of the basic network

3:10devices, what they do, the infrastructure and the tools

3:13used to automate, then Knox Hutchinson

3:16is going to take us home by walking us through in a Cisco

3:19environment how to actually implement the network

3:22automation using the methods and tools

3:24available in the infrastructure, and then working

3:26with those with specific Cisco-centric devices

3:29for full network automation.

3:31So I wanted to share with you some

3:33of the benefits of the networking fundamentals

3:35portion of dev net, which I'm super

3:36excited about sharing with you.

3:38And now I'd like to turn some time over to Ben Fink.

3:40Meanwhile, I hope this has been informative for you,

3:43and I'd like to thank you for viewing.