Final Look at the Routing Tables

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Time
2 hours 8 minutes
Difficulty
Intermediate
CEU/CPE
2
Video Transcription
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>> Hello and welcome to Cybrary Infrastructure Services.
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This is a final look at the routing table and
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the final video in our series here.
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Without ado, let's get at it.
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Today we are looking at the host
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devices routing table and we will
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take a final look at the network devices routing tables.
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We took a little peek at them before, we'll do it again.
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Windows 10 and Ubuntu routing tables,
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you shouldn't see a difference.
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We can go ahead and verify
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with say the Ubuntu one real fast.
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[NOISE] Because everything should just point
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to the [NOISE] gateway.
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Saying hey, to get to here and go to the gateway.
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But because it's got a few different,
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these are VM isms, I guess you could say.
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These are just saying, hey, to get to these,
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here's where you go,
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but otherwise send everything else to that gateway.
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There should be no difference after
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we built a tunnel interface.
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But if we look at the networking devices, for example,
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we looked at the router 3
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here where we removed the static routes.
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This one only knows about it's connected routes.
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It only knows about the 253,
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the 252/30 network and then the 252/30 there.
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Those two different link addresses.
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It doesn't know where to send anything else,
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especially because we haven't set a gateway last resort.
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Anything else, it doesn't know where to send
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it as we saw with this ping here.
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We'll do the same exact thing.
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If we go to ping, the gateway for the land 1,
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the other land, you're
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going to see the same exact result.
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Whereas if we go into here and we go into router 2 here,
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you're going to see that we actually
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have the static routes.
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It does know how to get over to
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here through that tunnel interface.
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Same thing, we still don't have a gateway last result.
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Well, because we've statically told it to go through
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that tunnel interface and
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actually through router 3 because it's using that tunnel,
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it actually knows how to get to that 172.16 network.
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As I say, it would be the exact
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opposite if we looked at the router 1,
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it would know how to get to the 10.1.2 network,
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through the tunnel 1 interface.
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When we do add those tunnels,
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the host devices, just to recap,
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host devices won't see any difference.
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They're still going to send everything
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to that default gateway,
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but the routers will see a difference
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routing table so it's one thing to be aware of.
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This is the last quiz question for this series.
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What is the best crayon color?
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If you guys feel the need to,
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you are plenty welcome to send me
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a message on LinkedIn and explain
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your reasoning on this one
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because there really is no wrong answer.
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Please send me your results on your questions.
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Otherwise, thank you all for watching
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this series and appreciate it,
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and hope you enjoy the rest of your day. Thank you.