In the previous video, we implemented OSPF for IP version 4 and did a few show
commands to verify its behavior.
In this video, we're going to implement OSPF for IPv6 once again using the more
traditional method for the implementation.
And as a reminder of our topology for IPv6, I'm using this number here in red
as the IPv6 subnets.
So IPv6 addresses are already in place.
Also, IPv6 unicast routing and IPv6 cep are already enabled on all the routers.
And the addressing scheme we're using is 2001, DB86783, and then that red WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And the addressing scheme we're using is 2001, DB86783, and then that red
number.
So 13, 12, 24, 34, and then 35, 57, 46, and 68.
Now, even though we're using IPv6, a lot of the same concepts are going to
apply when using OSPF.
And that is we have to make sure all the parameters match between peers.
Also, we enable an interface to become part of OSPF.
We're going to specify which OSPF area that interface belongs to.
So, almost identical as far as the logic between IPv4 and IPv6 except this time WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So, almost identical as far as the logic between IPv4 and IPv6 except this time
using IPv6.
So here, picking up where we left off, we have a couple of choices.
If we go back to our notepad document, we could, before we implement OSPF for
IPv6,
we could just clear all the routing processes altogether.
However, because IPv4 and IPv6 are like ships in the night,
we can just leave the IPv4 running and not even bother clearing it.
We can just add on top of it the routing for IPv6.
So if you want to use the notepad document when you get to the lab at the end WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So if you want to use the notepad document when you get to the lab at the end
of this set of videos,
feel free to do so.
And here is the section right here, IPv6 OSPF.
So I'm not going to clear off the router configs for the OSPF for version 4.
I was going to add on the additional IPv6 routing process for IPv6.
In fact, let's just verify we have a couple things in place.
Let's do a show IPv6 interface brief and sure enough, IPv6 is configured,
fantastic.
Let's also do a show run, pipe, include IPv6. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
IPv6 Unicast routing is enabled, which it is.
And IPv6-SF is enabled, which it is, fantastic.
And these are all the IPv6 addresses that I have on their respective interfaces
.
So if we were to do a show IPv6 protocols in press center,
we currently are not running any IPv6 dynamic routing protocols.
But we're going to change that by configuring it right now.
So on our one, we're going to type in IPv6 router OSPF.
We'll use process ID1 again.
We're also going to specify AutoCost reference bandwidth of 1000,
because I want to be able for OSPF to differentiate the value or the cost WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
because I want to be able for OSPF to differentiate the value or the cost
between gigabit Ethernet and fast Ethernet.
Then once that's set up, I'm going to go into each of the interfaces
and use the IPv6 OSPF same process ID1
and then tell it what area it's going to be in.
So all the interfaces on our one are going to be an area zero.
If we scroll down to an area border router,
it's four slash one interface is going to be in area one.
And when you get to the lab, you know, the end of this set of videos,
I would encourage you, as you do the lab, to go ahead and maybe do a few of the WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
interfaces,
a few of the routers manually.
And then once you're comfortable with the syntax that you can do it,
then go ahead and do the copy paste.
Just for the benefit of learning it and making sure you practice it.
And also for a little bit of time saving as well.
So I'm going to go ahead and grab this config for R1.
I'll right-click, copy that, go to the right router,
and paste it in.
And then we'll go to R2 and we'll continue.
So here at R2, I'll grab that.
All the interfaces are going to be an area zero.
So go ahead and go to R2, paste that in.
And we should have a neighbor adjacency between R2 and R1 here WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And we should have a neighbor adjacency between R2 and R1 here
in just a few moments.
In fact, I'm going to wait.
In fact, let's do a show IPv6 OSPF interface brief.
Yep, and I did it soon enough where they're duking it out right now
between R1 and R2, but who gets to be the actual DR
for that segment for IPv6?
And when I say that segment, I'm talking about the interface gig 2, 0
interface on R2 that's connected over to the same segment
that R1's gig 1, 0 is.
And there it is.
All right, so we have our adjacency. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
All right, so we have our adjacency.
And I also would expect, because we just duked it out,
because R2 has a higher router ID.
And the default priority is set.
I would expect that R2 is the designated router for that segment.
So we hit the up arrow key and do a show IPv6 interface brief.
Sure enough, on its gig 2, 0, it is the DR.
There is one neighbor, and we are fully adjacent.
All right, let's continue on.
So we'll go to R3.
We'll copy the config for R3.
We'll go to R3 and right click and paste.
And then we'll go to R4.
So here's R4, and just similar to R3. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So here's R4, and just similar to R3.
R4 has most of its interfaces in Area 0.
And one of its interfaces in Area 2.
So I'll right click on that, copy that config,
go to the right router, and right click to paste it in.
Then we'll continue on to R5.
All of its interfaces are in Area 1.
So right click, copy, and go to R5.
Right click.
And as you're working on the lab, if you want to download
from the skill, the topology here,
that might not be a bad idea that we can have the topology
on a separate screen.
Or if you want to download it and print it, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
Or if you want to download it and print it,
so it's really easy to see, that's not a bad idea as well.
All right, so that's R5.
Let's go to R6.
So here's R6.
All of its interfaces are in Area 2.
So we'll right click, go to R6, and right click.
All right, and then we'll go to R7.
All of its interfaces are in Area 1.
So we'll right click, copy, and go to R7.
Paste that in, and our last router is router 8.
So we'll grab the config for R8.
Go to the right router, router 8, and paste that in.
All right, so let's just in spot checks. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
All right, so let's just in spot checks.
Let's go to a backbone router like R1.
And let's do a show IP route.
First of have it.
Show IPv6 route.
All right, so we have a whole bunch of OSPF routes.
So the OI are inter-area routes, and the O's there
are intra-area routes.
So as a test, if we wanted to go down to PC7,
so it's 10.1.7.10s.
It's IPv4 address.
And on this little virtual PC, it's IPv6 address also
ends in 10, but it would be the 2001 DB867837 network, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
ends in 10, but it would be the 2001 DB867837 network,
and then a 10.
So let's go down to PC7, and just verify
we have complete connectivity all the way around the horn
from PC7.
And let's do a test all the way to over to PC8.
And we can verify both addresses as well.
So let's go to PC7.
Here's the tab for that right there.
So its IPv6 address is this.
And on PC8, its IPv6 address is this.
You can see it, by the way, just by doing WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
You can see it, by the way, just by doing
on these little virtual PCs, show IP, or show IPv6,
respectively.
So let me copy the IPv6 address for PC8.
And let's go to PC7.
And let's do a ping.
And we'll right click and paste and enter.
And that is working in the virtualized lab environment.
That's kind of a long delay.
However, it's working.
And let's also do a trace over that same destination address
of 2001 DB867838 colon clon-clon-ten.
And that is showing first hop is R7, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And that is showing first hop is R7,
then R5, then R3, and R1, R2, or 4, or 6, or 8,
to the final destination.
So that looks great as far as connectivity is concerned.
And of course, we could also do that trace from a router.
So R7 in the bottom left of our topology.
Let's take a look at that topology again.
So here from R7, we could also do the trace either to an
interface on R8, or to PC8, or server 1nug also has
a IPv6 address ending in 100.
And this subnet is 2001 DB867838. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And this subnet is 2001 DB867838.
So let's go to R7 and verify trace from there as well.
So here at R7, we'll go ahead and do a trace, and we'll paste in
that address that we just used.
2001 DB86783810 press center.
And sure enough, same exact path.
Up through R5, then 3, then 1, then 2, then 4, and 6, and 8,
and finally hitting the destination.
I also have the server over at 100 on that same remote
subnet on the far right press center.
That's also responding.
So let's give this to some checks.
And on our four, let's do a show IPv6 OSPF Interface Brief WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
And on our four, let's do a show IPv6 OSPF Interface Brief
to verify our interfaces.
We'll do a show IPv6 OSPF neighbor to show us our neighbors.
We need to show IPv6 OSPF press center.
And that'll show us the details about our OSPF.
Now, even though we configured it with a legacy method,
it still shows here its OSPF B3 process ID1.
Now, that is distinct and different from using the OSPF
version 3 option that I'll be showing you in the next video.
So just realize for IPv6 OSPF, here's referring to OSPF B3, WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So just realize for IPv6 OSPF, here's referring to OSPF B3,
even though we configured it with the traditional method.
There's the router ID.
Here, it's showing us it's an area border router
because it's connected to the backbone area
and a non-backbone area.
Here, it's showing us the number of areas
it's connected to, two normal areas, 0 stub and 0 NSSA.
Here's the reference bandwidth that we configured.
And here's the information about area 0.
And I cut it off too soon.
So I'll go ahead and spacebar.
And now that I'm not truncating it,
here is the backbone area information WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
here is the backbone area information
and here is the area 2 information.
And if we want to take a look at the LSAs,
even though OSPF for IPv6 has additional above and beyond
what IPv4's OSPF has, we can still focus on the LSA type 1s
and 2s and 3s, and we can also reinforce what they do.
So see the LSAs, we can do a show IPv6 OSPF database.
And again, because we're on an area border router,
our four, it should have a whole set of LSA type 1, 2s
and 3s for area 0 and also a whole set for area 2.
So press enter. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
So press enter.
So here are the router LSAs, the LSA type 1s for area 0.
And then we have our network LSAs,
this is the LSA type 2s for the backbone area generated
by the DRs for each of those network segments.
And then if we get down further,
we have the LSA type 3s, the summary LSAs.
So in this column here, it has the advertising router.
So that's R3 and R4 respectively as ABRs.
And over here in this column, it has the actual prefix
being advertised in those LSAs.
There's a few additional LSA types
with the OSPF version for IPv6. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
with the OSPF version for IPv6.
However, I'm focused just on the LSA type 1s and 2s
and 3s for this discussion.
So now as we get onto area 2, here's the LSA type 1s,
the router LSAs for area 2.
Here's the network LSA, the LSA type 2 for area 2.
And this time, router 8888 is the designated router
based on the person who's advertising that.
And we could verify that by going to R8.
And do a show IPv6 OSPF interface brief
and sure enough for the network segment between R8 and R6.
R8 is the DR as shown right there. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
R8 is the DR as shown right there.
All right, fantastic.
So back to our four we go.
And then our four for area 2 is advertising all of these routes.
So each of these is an LSA type 3 advertising the one network
and the two network and the 34 network.
So the networks for advertising are all the IPv6 networks
that are not inside of area 2, including networks
from the backbone area and also networks
that are reachable over in area 1.
So in this video, we've taken a look
at how to configure IPv6's flavor of OSPF WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
at how to configure IPv6's flavor of OSPF
using the traditional method.
And to compare and contrast this method,
we just did with using literally OSPF V3.
In the next video, I'd like to demonstrate that as well.
So I'll see you there in just a moment when you're ready.