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Congratulations on
completing another skill.

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Now, it's time for a review
in the form of a quiz.

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As we go through
these questions,

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be sure to pause the video after
each question to give yourself

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the opportunity to answer
the question yourself

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before we then go
over the answer.

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That said, let's jump in
with our first question.

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Which command on
the PE can be used

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to see both labels that will
be put into the label stack?

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So let's just go down our list.

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First is the show
mpls forwarding table.

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And as we saw during
the demonstration,

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although this will
show you the forwarding

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table for inside the
core of the network,

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this does not include the
actual customer routes,

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therefore, show mpls
forwarding table's not

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going to be a correct answer.

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However, show ip cef,
now you will still

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have to specify here, which
VRF you are looking for.

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However, overall, this is
going to be a correct answer.

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Show ip route detail is not
going to show us the labels.

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Show vrf detail also does
not show us the labels.

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It would show us things
like the route extinguisher.

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So overall, number 2
is our correct answer.

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Next question.

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Which two values must
be configured for a VRF

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to be viable for Layer 3 VPN?

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So once again, let's
go down our list.

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VRF ID isn't really a thing.

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You could maybe say
that it's the VRF name,

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but that can really be anything
for it to still be viable.

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It will, however, need to have
a route target configured,

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both import and export route
targets, but route targets

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nonetheless.

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Next is root forwarders.

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That sounds pretty
much made up to me.

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I don't know what that would be.

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Same with route identifiers.

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That's not really
a thing either.

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However, we do need
route extinguishers.

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So our two answers here would
be route targets and route

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extinguishers, number
2 and number 5.

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Final question.

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Which address families should be
enabled between the PE routers?

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So L3 VPN, again,
not really a thing.

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That's not what we call
our address families.

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Neither is MPLSVPN.

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That's not really one
of our names either.

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However, VPNv4, this of
course, is the addresses

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that we use for our IPv4 routes.

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VXLAN, not going to be
appropriate in this context.

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And, of course, if we
want to support IPv6,

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we're going to
need VPNv6 as well.

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So to support all of
our current protocols,

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we'll want 3 and
5, VPNv4 and VPNv6.

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So that concludes this quiz.

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If you find that you are missing
any of the information needed

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to answer these
questions appropriately,

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I would encourage you to go back
and review the sources listed

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on each question.

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Otherwise, congratulations
on completing

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implementing MPLS Layer 3 VPNs.

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I hope this has been
informative for you.

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And I'd like to thank
you for viewing.

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