As I was putting together this hands-on lab, I thought to myself, there are a
lot of routers.
I think 10 routers to configure here. So, for the lab, here's what I'd like you
to do.
We're going to take a subset of this network topology and configure effectively
an entire autonomous system.
So here's what I'd like you to do. I'm going to like you to take this
autonomous system, which involves R21 and R22,
and I'd like you to go into configuration mode and issue this one command on
those two routers,
and that's going to remove all of their respective BGP configuration completely
.
So, with it gone, then, I'd like you to go into the steps of actually config WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So, with it gone, then, I'd like you to go into the steps of actually config
uring internal BGP
neighborships between R21 and R22. Inside of AS20, I'll also feel free to use
loopbacks.
If you don't want any loopbacks, you can point to the actual addresses on those
respective interfaces,
but the loopback addresses, which are 21, etc., and 22, etc., are both reach
able via OSPF.
So, if you want to point and neighbor up with those loopback interfaces, feel
free to do so.
Also, when you're seeing the neighborship, because R21 is going to be receiving WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
Also, when you're seeing the neighborship, because R21 is going to be receiving
routes from
external BGP peers, and we want to sit the next top to be R21's address,
you'd also want to go ahead and use that next hop-self option when you're
configuring R21
to peer over with R22. Then, once you have that neighborship set up, the second
thing I'd
love you to do is set up external BGP. And for the level to just be external BG
P between R21 and
R11 and external BGP between R21 and R42. And the rest of the network,
including a ton of system 10 and
30 and 40, they're already configured ready to go. And then once you have the WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
30 and 40, they're already configured ready to go. And then once you have the
external BGP session set
up, I'd then like you to go ahead over to R22 and advertise R22's loopback zero
interface,
which is 22.22.22.22. And once that's advertised, and after you give the
network a second
or two to converge, all of these routers should have those four routes inside
of their BGP table.
And the best of those routes that are usable would also be placed into the
routing table. So,
as a test, you should be able to ping from, once it's all set up, you should be WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
as a test, you should be able to ping from, once it's all set up, you should be
able to ping from
loopbacks on R12, R32, R43, and R22 to any of the other respective loopbacks.
So, and they'll put
the arrows there as a reminder. So, from any of the loopbacks to any of the
other loopbacks, we should be
able to have full connectivity. And that would include a trace or a ping once B
GP is all in place.
Again, your mission should you choose to accept it is just the configuration of
R21 and R22 using
these steps. Also, as an aid to this lab, I also have a configuration file, a WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
these steps. Also, as an aid to this lab, I also have a configuration file, a
little note pad document
early, sitting on server1-nug that you can refer to. If you want to just
confirm many of the
steps or look at those details, they're in that note pad document. So, have
some fun with the lab.
But when you're done and you have that full connectivity from loopback to loop
back, they're being
advertised via BGP. If you want to join me for the walkthrough, we'll do that
next in the next video.
So, I'll see you there after you've had an opportunity to get some hands-on
practice with the lab
and want to do the walkthrough together.