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So, behind the scenes, I took our existing topology and I did a major cleanup,

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which basically

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means I got rid of all the tier 1 and all the tier 0 gateways.

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They're no longer in existence and also there are no segments anymore,

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including no VLAN

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back segments, no overlay segments, everything's gone.

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In fact, let's take a quick peek just to verify that's the case.

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So here in the NSX manager, if we click on networking at the top, here's our

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network

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overview and this is currently showing no tier 0 gateways, no tier 1 gateways,
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overview and this is currently showing no tier 0 gateways, no tier 1 gateways,

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no segments.

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However, what I did leave in place would be scroll down and go down to

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networking profiles.

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I did leave a DHCP profile that we can call upon once again for DHCP services

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when we

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need it.

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But as far as segments and gateways are concerned, if we click here in network

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topology, that's

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going to reveal the picture and that is there's nothing to display.

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No tier 0 gateways, no tier 1 gateways and no segments.

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All right, so now that we've confirmed the cleanup is done, let's go ahead and

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deploy

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our initial T0 gateway, which has to be in place first before we can start
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our initial T0 gateway, which has to be in place first before we can start

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carving out

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parts of it for VRFs for our individual customers.

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So for this deployment, we're going to go ahead and create an external VLAN

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back segment

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for VLAN 21.

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We'll use the IP dressing space of 102100 and then for edge 1 and edge 2, we'll

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use .61

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and .62 respectively.

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So back here in the NSX manager, we'll click on networking and with networking

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selected,

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we'll click on segments and let's create our external VLAN back network segment

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that we're

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going to use for the initial T0 gateway.

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So with segment selected, we'll click on add segment.
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So with segment selected, we'll click on add segment.

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I'll call this external for VLAN 21 and then I'll collapse the left hand side

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here to give

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us a little bit more room and for the transport zone, I'm going to go ahead and

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use our existing

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VLAN back transport zone and down here where it says VLAN, I'll put in VLAN 21

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and with

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that in place, we'll scroll down and click on safe.

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It's asking us if we want to continue configuring the segment, we'll say no.

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So there it is.

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Next, let's go ahead and create our T0 gateway and then we'll connect using
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Next, let's go ahead and create our T0 gateway and then we'll connect using

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edge 1 and edge

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2 to this external segment for VLAN 21.

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So to do that here on the left, still under the networking tab, we'll go down

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to tier

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0 gateways and click on add gateway.

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From the drop down, we're going to create our initial tier 0 and then after we

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create

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that tier 0, when we get over to the blue and the green VRFs, we'll choose VRFs

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.

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So for now, we're going to create the parent tier 0 gateway by clicking on tier

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0 and let's

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call this our tier 0 gateway and as far as the HA mode, let's go ahead and use

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active

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standby and then for the edge cluster, we'll choose our cluster that we put
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standby and then for the edge cluster, we'll choose our cluster that we put

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together earlier

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and then we'll scroll down and we'll click on safe.

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So now that we have this brand new tier 0 gateway saved, we can continue our

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editing by

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clicking on yes right here and we can configure things such as the default

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route that it's

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going to need as well as its interfaces.

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So for this gateway, we'll scroll down to interfaces, expand that and we'll

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click right

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here on set and we are going to set up two interfaces, one from edge one, one

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from edge

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two, both connecting to the external VLAN 21 back segment.
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two, both connecting to the external VLAN 21 back segment.

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So we'll click here and add interface and I'm going to call this interface edge

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one

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on VLAN 21 and that is going to be on the 10.21.0 network with a 61.

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So we'll put that in for the IP address and then for the edge node, we'll go

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ahead and

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choose edge one and for the segment we're going to connect to.

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This can be our external for VLAN 21 segment.

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So that looks good, we'll scroll down, click on save and then while we're at it

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, we'll

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add one for edge two.

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So we'll click on add interface to our tier 0 gateway.
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We'll call this edge two on VLAN 21 and this will have the address of 10.21.0.

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62 based

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on our plan with a 24-bit mask and it's also going to connect to that segment.

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So again, for fault tolerance, we probably have two top of rack devices that we

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can

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connect to and we'd use two separate VLANs, one for each but for the demo, I'm

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just going

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to use the two edge nodes connected to that same external router.

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And so for the edge node here, this is going to be edge two and we'll scroll

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down and click

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on save.

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And then we'll give it a moment and make sure that both interfaces are

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initialized.

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Let me do a refresh right there.
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Let me do a refresh right there.

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That looks good and we'll click on close.

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So there's our interfaces and let's go ahead and close editing.

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So now with our tier 0 gateway in place, if we click here on network topology,

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again

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with the network tab on top and on the left, network topology, now we have our

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tier 0

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gateway with two interfaces, one provided by each edge and we can go ahead and

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double

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click and it'll show us that as well.

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So here's the fabric view with edge one, which is active and edge two, which is

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the

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standby.

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So we click back there.

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So now that we have the tier 0 gateway deployed, that's this one right here
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So now that we have the tier 0 gateway deployed, that's this one right here

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with its connection

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to the external environment and it's using edge one and edge two behind the

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scenes to

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do that.

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So our next logical step is right here.

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We're going to take that tier 0 gateway and we're going to carve up a portion

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of it as

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a VRF to be used by this customer here on the left and we're going to call that

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customer

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blue for this example and that'll keep all the routes for blue separate in a

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separate

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VRF that's represented here by this logical blue VRF router icon.

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It'll keep all those routes for blue that customer separate from all the routes
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It'll keep all those routes for blue that customer separate from all the routes

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over

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here in green, which will be in a different VRF.

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So join me in the next video as we begin the configuration of our blue VRF

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right here.

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