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