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Now, like most software-defined
networking solutions,

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one of the most
important things about it

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is to understand how it
communicates to devices

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or other platforms, or how
we could create applications

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that interact with it.

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So in this particular
Nugget, we're

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going to talk about the fifth
workflow, the platform, which

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is all about the
different types of APIs

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that we can really work
with within DNA Center.

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We're going back to what we
learned in the previous skill,

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with north, south,
east, and westbound.

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Let's have some fun
with it and get going.

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So I mentioned this
previously, and now I'm
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So I mentioned this
previously, and now I'm

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going to bring it up again.

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There actually is a fifth
and somewhat unknown

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workflow called the
DNA Center platform.

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And what we're really talking
about here is the APIs.

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And you could see, this
diagram is probably

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setting up a somewhat
familiar diagram

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if you've been following
along in this playlist.

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That's right.

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We've got the north
and then south and then

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east and then west.

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And it absolutely follows the
exact same design patterns

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that we mentioned
when we were talking

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about how these directions
work within a software-defined
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about how these directions
work within a software-defined

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network.

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You see, to the north, we
have the intent-based APIs.

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This is where we define
our business intent.

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This is where we
define what it is

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that we want DNA Center to do.

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And this is also a way that
we can extract data out

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of the DNA Center
appliance and figure out

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what's really going on
within our environment.

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To the south, we
actually communicate

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to our network devices.

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But this is also interesting
to point out within DNA Center.

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We actually have the ability
to work with other products.

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It doesn't have
to be Catalyst 9K,
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It doesn't have
to be Catalyst 9K,

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although they typically
can't deploy an SD-Access

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fabric unless it's a
Catalyst 9K appliance.

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Still, we have the
ability to bring

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in other platforms into DNA
Center's inventory and at least

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leverage them for
assurance and monitoring.

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Of course, we have the outbound
events and notifications

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going to the east.

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This is where we set up
those webhook alerts,

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like we were talking about.

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And from the west, we
have our integrations.

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Of course, this is going
to be ISE and IPAM, as well

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as other items that we can
integrate within DNA Center,
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as other items that we can
integrate within DNA Center,

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too.

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And this list is growing
as DNA Center evolves

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and they add more
functionalities to it.

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So the big thing under the hood
that you should really know

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is that DNA Center
is extraordinarily

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programmatic and
automated in a way

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that it tries to make
our lives easier.

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It communicates automatically
via APIs to ISE and IPAM

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and to all of the devices
within its inventory.

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And we can tell it to
send information out.

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And we can create
programs ourselves
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And we can create
programs ourselves

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that implement intent
or alert notifications.

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And if this is something
that really strokes

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your interest, what we can
do is I can actually show you

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where you can access
documentation and learn

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about the DNA Center APIs.

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Of course, we have
content dedicated

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to this within CBT Nuggets as
part of our SD-Access course

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or the in auto certification
course that we have here, too.

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But at the very top
again, we see Platform.

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That's what we're talking about.

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The DNA Center Platform is where
we integrate with other devices

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and services.
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and services.

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From the Developer Toolkit, this
is where you can click on APIs.

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The APIs are categorized.

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This is where we can get
to know your network,

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what is in your inventory, and
how is it behaving right now?

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The Site Management
is where we can

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change our site information.

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Think the design
workflow in this case.

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Connectivity, this
is largely centered

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around assurance, what
is our client health,

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how are things going right now?

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And Operational Tasks
are where, of course,

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we can start looking into the
actual fabric provisioning

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itself.

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And Policy is where we
can look at our policy
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And Policy is where we
can look at our policy

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and implement policy changes.

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If you expand each
of these, like,

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we'll expand Know
Your Network here,

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it tells you the different API
requests that you can make.

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Again, recall that REST APIs
leveraged the best of the HTTP

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protocol.

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And that's what we're
talking about here.

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When you see GET in the
little green block here,

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we're talking about
issuing HTTP GET request.

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This is so that we can get data.

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When you see POST, this is
talking about issuing HTTP POST
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When you see POST, this is
talking about issuing HTTP POST

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request.

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This is so that we
can create new data.

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For instance, you see Create
Site here has a POST request.

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The description tells us
what this request does.

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And the URL tells us
what URL, which HTTP URL

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do we need to send this to.

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This is what you tack on to
the end of the IP address.

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So the URL for
creating a new site

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would look something
like, http://dnacenter

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fullyqualifieddomainname/site.

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But they actually make
it easier than you just
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But they actually make
it easier than you just

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having to piece this bit of
information together yourself.

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If we actually click on
Create Site right here--

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let me clear the screen--

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it tells you exactly
how to create a site.

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It tells you this is the exact
URL endpoint that I should use.

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In my case, this
is the IP address

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of my DNA Center appliance.

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And it tells you any attributes
that you can or should

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provide with you when you
go to create your site.

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So if I scroll down a hair--

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I think this is pretty cool--

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it shows you what
data should we provide
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it shows you what
data should we provide

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when we try to create a site and
what can we expect the response

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to look like?

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This is the model or
the outline of what

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the data should look like.

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It tells you what kind of
data it's willing to accept.

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Is it required,
or is it optional?

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And if you need to
see an example of it,

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you can click on the
Model Schema right here.

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Same thing with the response.

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We can see exactly how the
data should be structured.

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Some even cooler things about
it is we can click Try It,

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and it will give
us a little dialog

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where we can try and
create our own POST

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request to create a site.
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request to create a site.

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Or even better, we can have
it generate the code for us

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by clicking on Code Preview.

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If we tell it, maybe we wanted
to use Python, there we go.

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There is our Python
script right there.

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All we have to do is add
our own little data to it.

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So here's the thing, you
may be interested in getting

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hands-on experience with
DNA Center yourself.

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And one of the cool things that
Cisco does for us is they've

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given us the DevNet sandbox,
which is a great way that we

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can learn and use DNA Center.

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We can even use the APIs
to perform GET requests
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We can even use the APIs
to perform GET requests

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and gather data out of it.

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So if I go to
devnetsandbox.cisco.com,

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I'll get signed in with a
free account here from GitHub.

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And what you see here under
the Lab Catalog section--

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here, let me clear
this, right there--

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all of these boxes are
actual environments

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of every Cisco platform that
you can get hands on right now.

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So when you see this Cisco
DNA Center Always-Ons,

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that means these are
publicly accessible

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and always on available
for you to work with.
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and always on available
for you to work with.

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So you'll click on Cisco DNA
Center on the Always-On section

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here, and it shows you a
little topology of the devices

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that you'll be working with.

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On the left-hand side,
if you scroll down,

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it gives you a URL that
you can connect to,

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as well as a username
and password.

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So when you give
this a click, it

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takes you to the login page of
a publicly accessible DNA Center

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sandbox.

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Now, this is read only.

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This is where you'll only be
able to browse and explore

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the information.

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But I highly encourage
you to jump in

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to the publicly accessible
DNA Center sandbox,
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to the publicly accessible
DNA Center sandbox,

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and just poke around.

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Get to know those four workflows
and the API capabilities that

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are here, ready for you
to be accessed, for free.

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I hope this has been
informative for you.

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And I'd like to thank
you for viewing.