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So our SD lab as we've built it so far is perfect if we're going to do

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something like

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just play with SD-WAN in an isolated environment or something along those lines

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.

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However, as soon as we need to talk to the real world, in other words, really

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connect

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it out to AWS and Microsoft Azure and Google Cloud, well, we're going to have

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to change

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things around just a little bit.
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things around just a little bit.

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For one thing, VManage or SD-WAN Manager is going to need DNS name resolution

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because

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that's how Cloud on-ramp is going to find the providers, just as a small

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example.

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Plus, we're going to have some rather interesting NAT issues or network address

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translation issues.

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These are going to have to be addressed.

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Now we're not going to address those specifically in this video.

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We have an upcoming video on how to deal with those NAT issues, but it is going
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We have an upcoming video on how to deal with those NAT issues, but it is going

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to require

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some changes to our environment.

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So let's go ahead and jump in and take a look at what we've changed in our

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environment

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from previous videos where we were using SD-WAN and this same basic topology in

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general.

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So here's a look at the basic topology that we've been using for a good portion

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of this

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course, particularly the SD-WAN section.

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However, we have made a few changes here that are needed for SD-WAN.
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However, we have made a few changes here that are needed for SD-WAN.

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So first, let's talk about some of the changes in VLAN 100.

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So the first change in VLAN 100 is that we're only going to be using one

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controller for

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most of these demonstrations.

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The reason behind this is we will have some issues, as I mentioned earlier,

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with network

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address translation, which in my environment is happening over here on this

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internet router.
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internet router.

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Now that being the case, it's just far simpler to try to get this working with

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the one controller

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and our SD-WAN manager running here in VLAN 100.

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The other thing that sort of changed here from a topology setup is that VLAN 10

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over

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here is now behind R1 and R2 with R1 and R2's outside interfaces now being in V

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LAN 100.

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So that's acting as the transport.
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So that's acting as the transport.

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Now of course, one other big thing you might notice here is that does mean we

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've brought

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in another switch.

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This switch is just doing plain routing.

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Nothing fancy going on on that switch.

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And our validator is no longer shown on this diagram because it's out here on

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the internet

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behind a separate public address.

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This is again done because of the NAT, which we'll be discussing more in an
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This is again done because of the NAT, which we'll be discussing more in an

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upcoming video.

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But validator 1 has been moved off of this network.

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Again, we have just manager 1 and controller 1 in our VLAN 100.

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And then we have our VLAN 10 or VPN 10 behind R1 and R2 with the original head

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quarter switch

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and our workstation.

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So again, just some minor adjustments.

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All of this information of course is in the topology diagrams and such provided
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All of this information of course is in the topology diagrams and such provided

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with

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this skill.

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Now also note, as I mentioned before, we had to update manager 1 here to also

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point to

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a DNS server.

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In addition, we also configured a port offset of 10 on controller 1 to 8 with

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the NAT issue.

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These are just some minor changes and I have them outlined in the code windows

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directly

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below this video.
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below this video.

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So in this video, we wanted to just take a look at some of these minor changes

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that

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we had to make to the topology to really make our SD WAN environment properly

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communicate

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with the outside world.

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Now this does bring us to some very specific NAT issues that need to be

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discussed and that's

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exactly what we're going to do in the next video.
