In our next section we will talk about the controller based networks.
Guys let's say that you're managing a huge network which consists of 1000 to outers 1000 switches and
1000 wireless access points.
OK then for example let's say you need to make a change into network for example.
You want to make a configuration change for a device and you should implement this one for 1000 devices.
So instead of configuring each device each one thousand two separately you have another option.
And we are naming these guys as controllers.
Controllers are used to manage more than one device from a central or central point.
And you just implement some solutions on the controller itself and controller is just communicating
the devices and make a related change to the devices.
OK.
Controllers are used in VoIP networks and also we have the wireless controllers that you can configure
their wireless access points.
OK Cisco have a new solution for this one and this name is Cisco DNA center Cisco DNA center is a way
to manage our network using a graphical and programming interface for enterprise networks.
Cisco DNA center is an appliance we can install our network or there is an option for having DNA in
cloud also you can add and configure network devices and monitor and troubleshoot your network by using
Cisco's Cisco DNA and DNA center is mainly focuses on five areas.
You can see on the screen and they are design policy provision assurance.
And the platform when we're stuck with the design we can take a map of world and we can add an area
and we can save within that area.
We have got this building or there is another area within an area we can put a floor on the building
we can import a floor plan and we can drag and drop devices onto that floor plan we can say what our
IP address allocation is.
And this is way for us to design our network to this graphical interface in addition to that Cisco DNA
can apply policy.
We can assume policies into our group may be a loving and denying them accessing to something and we
could do IP based access control or we can apply Q or as to our devices also.
We can also do provisioning in Cisco DNA center.
We can essentially do plug and play for our devices and we can have a new network that was set to whatever
location what is going to be configured and when the device moves up it's going to go out and get some
IP address information from DHS GP including some DNS server information and it is going to resolve
IP address of DNA is central server and it is going to go up that server and based on its serial number
it's going to be able to download the configuration file with just prepared profile for that device
and to nothing more device gets the configuration automatically from DNA center Cisco DNA center also
provides assurance and helps us to monitor the health of our network.
This is going to be helping us with troubleshooting surely and if there are existing faults we can see
what those are.
And based on experiences of Cisco TAC Cisco DNA Center will give us feedback about what we should do
to resolve this issue this summer.
And let's say there is a rich ability problem between your two locations and let's say there's an access
list causing this issue.
And Cisco DNA center in this case will give us a graphical representation and show us exactly where
that ACL lives that is blocking our traffic and last important feature of Cisco DNA center is.
It is a bill.
Ability to act as a programming platform.
We have a large collection of API is application programming interfaces that will allow us to do why
our program what we could do graphically if you want to provision or set a policy or gather troubleshooting
information we can do that with a python script for example using some of these APIs so Cisco is providing
us ad team a platform also for Cisco DNA if you want to experience Cisco DNA center yourself you can
just browse the sandbox the NEC that Cisco dot com.
Okay let's go there and check what's going on for Cisco DNA.
There we go.
User name is down at the user and we enter a related password.
Okay.
Once we broke these Cisco DNA them page you can see the options.
A design policy provision and assurance we have already talked about and how they are used and what
is the purpose of using that one.
Okay.
Let's have a look.
What is included in an insurer assurance page you can check the network health in here basically and
you can have some great graphical interfaces which is showing network devices and wired clients and
wireless clients and you can also check if there is any global issue in here.
For example let them load
and you can manage some scheduled captures and sense of driving tests.
Also you have dashboards for your sensors
when we check the provision you can check you.
You can see your each device and the what is the device family what is IP address serial number uptime.
And when you check the policy also you can create group based access control policies IP based application
traffic copy and virtual network policies and when it comes to the design you can do your own designing.
And yes Cisco DNA is really cool and a big topic actually but for Cisco's yet CCMA XOM you will just
be responsible from the things that you already talked about.
So I don't want to go deeper for this one.
OK let's go ahead.
As I explained do we have also wireless controllers and wireless controller w Lan is a wireless architecture
that aims to meet changing network demands and wireless controller manage wireless network access points
that allow wireless devices to be to connect to the network.
Basically what a wireless access point does for your network is similar to what an amplifier does for
your home stereo.
For example guys it takes the benefit coming from a router and stretches it so that many devices can
go on the network from farther distances away a wireless controller is used in combination with the
lightweight access point to control LW APB to manage light fade access points in large quantities by
the network administrator or network operations center the wireless controller automatically handles
the configuration of wireless access points so you don't need to go at each access point and you don't
need to configure or separate the all of them.