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Tell everybody we are starting our CCN of course with dynamic routing protocols

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if you want to make running in our network we have two options and they are tatic routing and dynamic

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routing static running running tables in specific rather to be set up by the network administrator dynamic

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Radi use running Perl of course that dynamically discone or destinations and how to get them dynamic

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routing Al's rodding tables rather to change if a rather under rug goes down or if a new work is added

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in dynamic routing writing protocols running in ralliers continuously exchange network status updates

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between each other as broadcast or multicast with the help of routing update message sent by the routing

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protocols rather it can continue to update the writing table when our end or topology change happens.

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And let's take a look to the enterprise network infrastructure in an enterprise infrastructure.

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We have four main parts the first part is HQ.

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The second one is branch offices.

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The third one is data centers and the last one is the internet edge.

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Normally place that would collect traffic there which are coming from the branch offices and in data

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centers we have servers Lord balancers and some corner or key words such as Carruthers and corsets and

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something like that.

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An Internet edge is the place that we are using when were going to the Internet site where we try to

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use protocols in enterprise network infrastructure.

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We need to take care of something.

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Its recommended to use a single Roding protocol within the company work.

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And if there is a geographical or dispersed structure is recommend that they use BGP with ISP and OSPF

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or IA GAAP for the internal network.

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So how do we choose which who are the protocol we are going to use.

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The first thing we need to ask then is what is the size of our network if thats a real small app.

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For example we can use rep but if its a huge network and its our internal size or its path would be

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better for example.

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The second thing we need to ask is do I just use Cisco for example some protocols or some technologies

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are just used with Cisco devices.

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GAAP was Cisco propria the before but that's an industrial standard right now.

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But before we could we could just use edgier with the Cisco Two-Eyes.

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The third thing we need to take care is what is the porticoes convergence time Corrigan's time is a

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really really important point we need to focus on and we are going to take a look to this one.

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And the last thing we need to ask is What is the scale ability of the protocol as well.

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We are at Chegg all of these steps and we are going to take a deeper look in our next sleights Lets

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take a look to the IGMP and Egypt right now.

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I PS support small medium and large scale organizations but they are scalable it is limited.

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They can quickly coerce work.

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The most commonly used is are yeah GAAP and OSPF e.g. people are used to exchange routes between different

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autonomic systems and BGP is the only AJP use today.

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The main function of the BJP is to exchange a large number of froths But when different other systems

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are running are the code pipes we have three types of routing protocols and are distance Whitter links

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they and their pet vector.

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This doesn't work the protocols runs according to hop count every browser knows as much as the neighbor

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tells him there's no network map on Rather's and we became you an example rip and edge or pay for the

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distance vector protocols and links.

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They rather is running with these protocols can extract board member off the entire network.

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That is they have the knowledge of the always between two points.

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Thus they collect all the subnets in a tree and make the best decision about which way to go with the

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shortest path.

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First algorithm they decide according to Ben read play an asshole or an impersonator.

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Rather information is used to determine the best drugs similar to this inspector.

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Rather just do not have or met.

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Let's take a look to the importance of the Colmer just now right now Corden's is the time it takes for

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the others to notice the change in the work to share information about the change with each other and

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to make the necessary calculations to find the best route.

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Again today Komori Jones is a really really really big and important point.

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For example if there's a problem on your network your network needs to work in one or two seconds in

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some protocols.

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It takes really a long time to converge and they are not preferred in today's networks.

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And the left think we're going to talk about is the route summarization summarization reduces throttling

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load and improves the stable D and scalability of shared driving information between routers and the

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figure as you can see we have four brothers and we have some routes in here 22 in year two and three

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in here 20 and 21 in here we have four separate routes as you can see but rather a carrier present this

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fall works using a single network these four networks four separate Oist can be summarized as to where

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it is 0 0 and Fleisch 14 and you can see that the summer Mascaret is used here is Fleisch 610.