In this hands on lab, we're going
to do troubleshooting ticket number 1.
And here's the play by play regarding
the tasks for this lab.
I'd like you to place this interface on R7 and R8,
respectively, into Area 78.
So it's going to be Network 78, these two characters
here, in the IPv6 address that's already in place.
But adding those interfaces to Area 78 for OSPF version 3
will be something I'd like you to as part of the lab. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
will be something I'd like you to as part of the lab.
And here's the goal, I'd like this Network 78
to be reachable by any other router in this OSPF topology.
So as a goal, we could ping this IP address on R8,
which would be 2001:DB8:6783:78::8,
so that'll be the goal.
That any device in this topology can ping that IP address
on this interface.
Now here are some requirements that I'd WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
Now here are some requirements that I'd
like to enforce as we get that to work.
Number one, this area right here, Area 1,
needs to remain as a not so stubby area.
Area 2 needs to remain as a stub area.
So short of that, any other way that you'd
like to implement this solution, leaving this network here
between R7 and R8, leaving that in Area 78,
that has to be there.
So any solution you'd like to implement,
where every other outer can ping this interface on R8, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
where every other outer can ping this interface on R8,
is totally good to go.
So if you want to do GRE, if you're up to it, that's fine.
However, there is a another, and fairly more simple,
solution, if you'd like to do it.
So I would encourage you to pause me right here,
give that some thought.
If you want to work on this before I do the walk through,
please stop me here, if you're on a mobile device,
until you get back to your computer, log onto CBT Nuggets,
and give this a shot on your own.
So in any case, go ahead and pause me right now.
And then when you're ready, click on a resume,
and we'll continue with the walk through. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
and we'll continue with the walk through.
All right, if you're ready, I'm ready.
So here's my proposed solution to this challenge.
Once we put this network here, which
is the 78 Network, into Area 78 for OSPF version 3.
If we have a stub areas and not so stubby areas, respectively,
we really have just two options.
One is-- if this stays in Area 78, one WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
One is-- if this stays in Area 78, one
is we could do a GRE tunnel, from R8 up
to R4, or from R7 up to R3.
And then include that GRE tunnel as part of OSPF,
by giving it IP addresses with IPv6,
and enabling those interfaces as part of OSPF
version 3, that would work.
Or check this out, R3 is already an ABR,
what would happen if we just took this network
segment, which happens to be 38, and we also WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
segment, which happens to be 38, and we also
made that part of Area 78.
So Area 78 would include this and this.
And R8 is connected to both those, so it's contiguous.
And we have R3 that's now acting as an ABR.
That is one of the most simple solutions
here for making this work.
And that's the solution I'm going to walk us
through in this scenario.
All right, so let's start on R7, and we'll
do a show IPv6 interface brief, just
to make sure we have the right interfaces involved.
And I'm just looking at these, that section WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And I'm just looking at these, that section
of the IPv6 network address, right there.
So serial 3/1 is the one that goes over to R8.
So we go to interface config for serial 3/1,
IPv6, OSPF, process ID 1, Area 78,
and then we'll do a similar thing over on R8.
So on R8, config t, we'll do do show IPv6 interface brief.
And so actually, what we need to do here
is we need to do this on two interfaces. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
is we need to do this on two interfaces.
We need to do it on the one between R7 and R8,
that's this guy, right here, and also the one between R3 and R8.
Because we're going to enable IPv6 Area 78
for both those networks.
And then on R3, it'll be the area border router.
So let's see if we can do a range command here,
interface range, so far so good, serial 3/1 through 1.
Oh, no, it would be 3/1 through 2, yeah, OK. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
Oh, no, it would be 3/1 through 2, yeah, OK.
Oh, it doesn't like that.
Let's see here, interface range.
All right, no serial option.
I gotta do them one at a time.
All right, so interface range--
all right, I've got to do them one at a time.
So interface serial 3/1, IPv6, OSPF, process ID 1, area--
so 3/1 and 3/2, they're both going to be in Area 78.
And we'll hit the up arrow key a couple of times, go to 3/2, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And we'll hit the up arrow key a couple of times, go to 3/2,
add that in, and let's see if we get our neighborship.
Yeah, there it is, with R7, fantastic.
And let's go to R3 and let's finish this guy off.
We'll do a show IPv6, interface brief, just
to confirm we have the right interface,
based on IP addresses.
And here is-- all right, serial 3/2,
I thought I had it configured.
So there's the 38 Network that's connecting it down to R8.
So we want to enable OSPF Area 78 on that interface. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So we want to enable OSPF Area 78 on that interface.
Config t, interface serial 3/2, IPv6, OSPF, process ID 1 area.
And it is going to be Area 78.
All right, we have an adjacency.
So what should happen now is we have an area border router, R3,
for the 78 Area.
And if we do a show IPv6, OSPF, it'll confirm that for us. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And if we do a show IPv6, OSPF, it'll confirm that for us.
Sure enough, we were in the backbone area
before, but now we're in the backbone area
and we're connected to Area 78.
So Area 78 has ABR.
And if we go to R1, or some other router in the topology
to do a show IPv6, OSPF route, or rather, show IPv6 route,
OSPF learn routes.
And we look for the 78 Network, there it is.
And we should be able to ping--
let's copy that.
We'll do a ping to right click, and then WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
We'll do a ping to right click, and then
to 8, which is that interface, that serial interface, down
on R8.
And that works, we'll also do a trace
to that same address, nope, 8.
So when I saw that just a moment ago, I thought,
whoa, that's not enough hops.
But yeah, it's enough hops.
It's going from here, to here, to here.
And as one other test, if we go into R5,
because R5 is learning about that route from R3, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
because R5 is learning about that route from R3,
the path would be from R5 to R3, and then down to R8.
And we can verify that here in the lab,
let's do that same trace.
We'll just do a trace, right click,
I think I still have some of that, there we go.
And that shows the path.
So R5 went to R3, and then down to R8.
So in this troubleshooting lab, the troubleshooting
I asked us to do was to identify a method
we could use to not have to use the virtual link,
by actually making Area 78 have a real ABR without having WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
by actually making Area 78 have a real ABR without having
to use a virtual link.
So thinking a little bit outside the box.
I've got one more lab for you.
It will also include the concept of virtual links,
and we'll do that coming up.
So meanwhile, I hope this has been informative for you,
and I'd like to thank you for viewing.