Congratulations on completing another skill.
Now it's time for a review in the form of a quiz.
As we go through these questions,
be sure to pause the video after each question to give yourself
the opportunity to answer the question yourself
before we then go over the answer.
That said, let's jump in with our first question.
Why is MPLS TE required for SR-TE?
This of course, is a fill in the blank question
so as long as we have something along the lines of this answer,
it would be correct.
And the answer is quite simply because MPLS is still the data
plane for segment routing.
Remember that segment routing is effectively just changing out
the control plane and implementing a little bit
of different logic.
But we're still using MPLS labels
in the data plane for our traffic forwarding.
So we still need our devices to be
capable of doing MPLS traffic engineering to support SR-TE.
Next question.
Which command is used to get link state
information from the IGP into multiprotocol BGP?
So this one's really just a matter of memorization.
There's not too much to say about the incorrect answers.
So in this case, the correct answer is number 3, distribute.
One other thing I would say is don't
confuse this with redistribute which
is for getting routes between different routing protocols.
So there are two different commands
and the one we use for link state information is distribute
so that makes 3 our correct answer.
Final question.
How do we get the BGP routes to be used in multi-domain SR-TE?
So if you remember the problem was
that BGP would not use the routes
because it saw the next hop as being unreachable.
So if we look over these answers,
they all start with creating a static route.
So it's really just a static route to what
and we just said it because the problem is next hop
reachability.
So we create a static route to the BGP next hop,
pointing to Null0 simply to trick, if you will,
BGP into using a route that it normally would think
the next hop is not reachable.
So that makes 3 our correct answer.
So that concludes this quiz.
If you feel that you are missing any of the information needed
to answer these questions, I would
encourage you to review the sources referenced
on each question.
Otherwise, congratulations on completing implementing
segment routing TE.
I hope this has been informative for you
and I'd like to thank you for viewing.