[AUDIO LOGO]
So our first step to configuring MPLS traffic engineering
is going to be to configure the feature
on the appropriate interfaces in our network core.
So as we jump into the command line to do that,
let's start by looking at our topology,
so of course, we know which routers
and which interfaces we need to configure.
And then let's jump in to the command line
and get our journey to setting up MPLS traffic engineering
tunnels on its way.
So for this skill, we're going to be using MPLS topology 1.
And as you can see here, the main MPLS core
is routers 1, 2, 3, 4, and 5.
In order to configure traffic engineering,
we're going to need that configured
on all of the inside interfaces on all of these routers.
So just as an example, gigabits 1 and 2 on routers
1 and 2, all of the gigabit interfaces on router 3.
And router 5, we're going to need just these 2 interfaces,
gigabit 1.3 and gigabit 1.4.
Of course, router 4 will be configured the same
as router 3, all of its interfaces.
So let's go ahead and jump into the command line
and get started.
We'll go ahead and start on router 1.
So let's just start off with a show MPLS interface.
And what we can see is that our 2 gigabit interfaces, gigabit
1 and gigabit 2, are both enabled for LDP,
however, they're not enabled for tunneling.
So let's go ahead and configure that.
On IOS XR, we do this by going into MPLS traffic
engineering config, and then we simply add our interfaces.
So we'll add gigabit 1 and gigabit 2,
and commit those changes.
We'll do our show MPLS interface again.
And now we see that both of those interfaces are, in fact,
enabled for tunneling.
So let's go do the same thing on router 2.
So first, we'll make sure MPLS is enabled
on the appropriate interfaces.
We see here that it is.
Go back into configuration, into traffic engineering,
and at our interfaces.
And now we see that they're enabled for the tunnels.
So now under router 3.
Part of the reason for doing this
is also to verify that we're running MPLS
on all of the interfaces on the appropriate routers.
We can see that router 3 is running
on all of its interfaces.
So we'll simply add all of those interfaces to MPLS
traffic engineering and verify one last time.
Little too fast, we'll give it a second.
There we go.
So now tunneling is enabled on all of those interfaces.
And of course, we'll configure router 4, it'll be the same.
So we see here that router 4 is the same interfaces
as router 3.
It's the first 4 gigabit interfaces.
We'll configure them for traffic engineering,
commit our changes, and we'll verify.
Once again, a little too fast.
You can see it does take IOS XR just a second
to enable that feature.
There we go.
Now, the interfaces are configured for tunneling.
Last but not least, we have to do router 5.
So first, we'll check our interfaces.
Now, of course, this being IOS XE,
this is going to get configured just a little bit differently.
From global configuration, we say MPLS traffic engineering
tunnels, this enables the feature globally.
Then we go into each interface, on this router,
it's interface gigabit 1.3.
And then it's the exact same command,
but under the interface to enable it
for each individual interface.
We need gigabit 1.3 and 1.4.
We'll exit out of configuration.
And we see that now this router is
enabled for tunneling as well.
So in this video, all we did is verify
that MPLS is actually running on the correct interfaces
on our routers and we enable those
interfaces to support MPLS traffic engineering tunnels.
This feature does have to be enabled on each interface.
Remember on IOS XE, we have to enable it globally
and under the interface.
IOS XR, of course, it's all under
its own separate configuration section, which sort of takes
care of both at the same time.
The next thing we're going to have to do
is set up RSVP in the core.
And that's exactly what we're going to do next.
Until then, I hope this has been informative for you,
and I'd like to thank you for viewing.