So here are the lab tasks.
Let's take a look at our lab topology as well.
So here's our lab topology.
It has not changed.
We're going to be configuring for IPv4.
And then once we have it all configured,
we want to verify connectivity between R7 and R8,
or we could also use the PCs that are hanging off
of those respected networks.
And then we get to answer the following questions.
And those questions are on R7,
how many of each of the LSA types exists,
including LSA type ones, LSA type twos,
and LSA type threes. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
and LSA type threes.
So I've reset the lab,
so I can walk through this from scratch with you.
And having said that,
well, let's go to the lab environment.
All right, so here we go.
This is verifier lab topology here from desktop, fantastic.
And let's go to server one by double clicking on that,
giving that a moment to initialize.
And there it is.
And because it's going to be more convenient to do so,
I'm going to choose to use the text document
and not manually type it in.
So I don't need to worry about clearing any routing processes
because it's brand new and I just reset it. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
because it's brand new and I just reset it.
So we'll go to R1, put that config in,
and go to R2, there's R2.
And again, I'm going to repeat that for all eight routers.
All right, and there is R8.
And if you wanted to play around
and maybe do some interfaces and interface config
versus the network statement,
certainly feel free to do that as well.
I'm going to go to this icon right here.
And I'm going to go ahead and tell it to reset
the OSPF process on all routers.
Such that we'll click there.
And let's have it clear.
I'm going to type OSPF process and press enter a couple times WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
I'm going to type OSPF process and press enter a couple times
because it's going to ask us to confirm.
I'll select all the routers and I'll remove PC178 from that
and click on send script.
Oh, and knows the default.
So I need to do that again.
We'll do a clear IP OSPF process, press enter, type yes,
press enter a couple times, there we go.
That's going to be much better.
And if at first you don't succeed, try, try again.
So we're going to send that to all eight routers,
click on send.
And that was given nice fresh reset to everything.
All the neighbors will go down.
They'll do it out based on who's going to become the DR WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
They'll do it out based on who's going to become the DR
for a given segment.
And assuming the priorities are out equal
and they are by default, they're one,
the router with the highest router ID will become the DR
for a given segment.
So here on our eight, if you do a show, IP OSPF interface
brief, press enter.
This is the common interface between our eight and our six.
And it should win as the DR because they both
have a priority of one by default.
And our eight has a higher router ID.
So if we hit the upper key, we can confirm that it just
became the DR and we do a show, IP OSPF neighbors. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
became the DR and we do a show, IP OSPF neighbors.
We also can see that our six became the backup designated router.
All right, fantastic.
And presuming the whole network has converged,
let's test our connectivity from the left hand side
of our network over to the right.
So here's our topology.
And since we're sitting here at our eight,
let's just do a trace over to 10177.
That's the IP address on gig 00 of our seven.
So we'll go back to our eight.
And we'll do a trace to 10.1.7.7.
And survey says, sure enough, full connectivity.
And let's go back to our lab tasks. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And let's go back to our lab tasks.
So now we've verified full connectivity.
On our seven, identify the quantity of each of the LSA types.
So to do that, we'll need to go to our seven.
And here on our seven, we'll do a show, IP OSPF database,
press enter, and hit space.
All right, and then we're going to scroll up
to answer these questions.
So this router, our seven, is only in area one.
So that's all we're going to see information for.
So this is the LSA type ones for area one.
And we have three of them.
A router LSA from R3, R5, and R7. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
A router LSA from R3, R5, and R7.
We take a peek at the topology.
That'd be those three routers that have interfaces
in area one, fantastic.
And then here for our network LSAs, these are LSA type twos
generated by the designated routers in that area.
Showing here that R5 is a designated router
for the segment 10.1.35.
And R7 is a designated router for the network
10.1.57.
So for LSA type ones, we have three for LSA type twos.
We have two of them. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
We have two of them.
And then for the LSA type threes, which
are the summary LSAs that are generated
by the ABR for that area, which is R3, we have all of these.
So if we count those, it looks like 18.
And that's representing 18 routes, if you will,
that are reachable through the ABR.
And those routes are in different areas.
For example, these four right here,
those are the loop backs on the four backbone area routers.
Here are the loop backs on R6 and R8, which are in area two.
These routes are all off of R1234 off their gig 00 interfaces. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
These routes are all off of R1234 off their gig 00 interfaces.
Here are four more backbone area routes between R1 and R2
and R1 and R3 and R2 and R4 and R3 and R4.
And these are four networks over in area two.
So if you took on the lab and got the hands on practice,
good on you.
That's the key secret in getting better and better
and understand the technology and how to implement, verify,
and when needed, troubleshoot the technology.
And if you want more information and practice with OSPF version three,
I've gotten great news for you. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
I've gotten great news for you.
That's in our next skills.
We'll take a look at configuring that and then adding some additional filtering
and tweaking and tuning for both IPP4 and IPP6 in the world of OSPF V3.
So I'll see you in the next video when you're ready.
Until then, I hope this has been informative and I'd like to thank you for
viewing.