So he has rather three.
Will configure a hostname of router three rather interface loopback zero IPV six address 2001 colon
face colon three colon colon one slash 64 interface gigabit zero zero.
This should have an IP address of 2001.
Colon two.
Colon.
Colon three.
Slash 64.
And I'll know.
Shut the interface.
Interfaces come up.
Gigabit zero one.
This should be 2001.
Colon three, colon, colon one slash 64.
And I'll also shut the interface.
So.
IPV six unicast routing needs to be enabled.
IPV six.
Router OSPF one.
Rada ID, as we told here, needs to be manually configured.
So 3333 interface gigabit zero zero.
IPV six.
OSPF one.
Area zero.
This interface needs to be an area zero.
A neighbour relationship has been established.
Interface loopback.
Zero.
I'll put that into.
Area two and will put gigabit zero one into area two.
So show IP OSPF protocols or other show IP protocols.
And this is the mistake that's easy to make.
It's IPv6 protocols rather than IP version four.
OSPF is enabled with OSPF process ID one.
The process numbers don't have to be the same.
I'll configure the lost router with a different process ID, but it makes sense to keep it simple and
use the same process ID on all your routers.
To normal areas.
These interfaces have been configured in the various areas.
Show IPV six route OSPF notice three routes have been learned through OSPF and these are inter area
OSPF routes advertised by router two using its a link local address.
So ping 2001 colon face colon one colon colon one router three is able to ping this address.
And what about a trace route?
To the same address.
We can see that we going via router two and then via router one.
So we've configured OSPF successfully on this part of the network.
Let's configure out of four.
And as I mentioned, I'll configure it with a different process ID just to show you that you can do
that, even though I'd probably want to keep it the same.
And all routers for consistency and simplicity.
So host is are for.
IPV six unicast routing.
Interface.
Loopback zero.
IPV six.
Address 2001.
Colon face colon for colon, colon one slash 64.
Now I'm using virtual rudders here.
You can see that it's having a problem with one of the processes, but hopefully that won't cause problems.
As always, what I should have done is save my configurations on all my routers.
So let's do that here in case I have to reload.
Three.
Not sure if you can hear that, but my CPU is taking a hammering at the moment.
So configuration is saved on.
The Four routers.
So show IPV six interface brief.
We have configured the loopback, but we haven't configured the other interfaces.
So Interface Gigabit zero zero IPV six Address 2001 colon three colon colon two.
Slash 64.
No shut we've already configured.
IPV six unicast routing.
So now we can configure OSPF.
So IPV six router ospf one router id in this example will be quadruple for interface gigabit zero zero
IPV six OSPF one area.
Two.
And we'll do the same thing on the loopback.
Neighbor relationship has formed so show IPV six OSPF neighbor.
Neighbor relationship is established show.
IPV six route.
OSPF We've got a single intra area OSPF route.
These two loopback are in the same OSPF area area too.
But these loopback on router two and router one are in different OSPF areas and so is this network here.
So ping.
2001.
Colin one.
Colin.
Colin one.
That's right.
A ones gigabit zero zero interface.
That works.
Ping.
2001.
Face one.
Colin.
Colin one.
That's the loopback of router one.
So debug IP and I'm going to make a mistake now.
Debug ip icmp won't show anything because we're not sending IP version for pings.
We are sending IP version six pings.
So debug ipv6 ICMP.
Notice we now get output on the debug.
So just be careful.
Make sure that you specify IPV six rather than IP version four when using your commands.
So show.
IPV six protocols there we can see that OSPF is enabled on this router.
Show IPV six OSPF interface brief two interfaces are in OSPF.
On Router three show ipv6 OSPF interface.
So this is not brief.
This is the interface command.
And you can see that gigabyte is zero zero.
This interface is a broadcast interface.
The local router has a link local address of this process.
ID is one.
The interface is an area zero.
Router three has a router ID of this.
It is a backup designated router.
The designated errata on this segment is rather two with this link local address backup designated router
is the local router.
Hello times and dead time as are shown here.
Scrolling down neighbor counters, one adjacent neighbor counters.
One neighboring router is rather two, which is the designated router on gigabit zero one.
We see similar kind of information.
The local router is the designated router, so router three is the designated router here, but rather
two is the designated router here.
Show IPV six.
OSPF.
This just gives us general information about OSPF version three.
We can see the router ID and the process number.
So we're using OSPF version three and not OSPF version two.
We can also see a backbone area.
Area zero one interfaces in that area.
The spoof algorithm has been executed three times.
There are 12.
Liz's area two.
There are two interfaces and area two.
Spoof algorithm has executed three times.
Show IPV six OSPF database.
We have and this is where you need to be careful.
Two routers in area zero.
But scrolling down.
There are also two writers in Area two.
The databases are separate, so there's a separate database for Area two versus Area zero.
So that's how you configure a basic IP version six network with OSPF version three.