These routers have just booted and don't have any configuration on them.
As an example here you can see that router.
One is asking us to enter the initial configuration dialog and I'm going to say no because I don't want
to do that.
This router is a virtual iOS router running advanced Enterprise Services Version 15.6.
So these routers are essentially iOS routers.
So first thing I'll do is configure a hostname.
Note please that if I try and enable OSPF.
Or rather OSPF.
I'm told that IPV six routing is not enabled.
We need to do some initial configuration on these routers before we can enable OSPF version three.
And one of the obvious things we need to do is configure IP addresses.
So on the loopback, I'm going to configure an IP address.
Like this.
And on gigabit zero zero, I'll configure.
An IP address.
As per the diagram.
Such as this and no, shut the interface.
So do show IP, not IP version for here.
Interface brief.
What you'll notice is that no IP addresses have been configured on this router.
In other words, no IP version for addresses have been configured, but show IPV six interface brief
shows us that this interface gigabit zero zero has this IP address as well as a link local IP address
configured.
And the same is true for the loopback address.
Again, IPV six router OSPF one shows us that IPV six routing is not enabled on the router, so the
first thing we need to do is enable IPV six unicast routing.
Now we can configure a routing protocol.
And in this example we have IGP, Network Mobility, OSPF and RDP, but we'll configure OSPF with a
process ID.
OSPF version three is once again very similar to OSPF version two.
So the process ID is a locally significant number on the router.
Note this message however OSPF version three IPV six could not pick a router id please configure manually.
So that's because we didn't configure an IP version for address.
So we now within the OSPF process.
Need to configure a router ID of a 32 bit number.
So do show run pipe begin ospf.
This is the OSPF version three configuration that we've done on the router.
Now at this point show IPV six OSPF Interface brief shows that no interfaces have been added to the
OSPF Version three process.
We need to go to each individual interface and type IPv6.
OSPF the process number.
In our example, that's process ID one, we need to specify the area and the area that we're putting
the interface into.
So in this example, the loopback interface is being put into OSPF.
So the command show IPv6 OSPF Interface Brief now shows us that the loopback interface has been added
to the OSPF process.
Process ID is one area is one to form neighbor relationships with other routers and in this case router
two will need to enable OSPF on gigabit zero zero on router one.
So IPV six ospf process ID is one area that will configure is one.
So now show IPV six OSPF Interface brief shows that both of those interfaces are added to OSPF.
A lot of the commands that you've used previously still apply here, so show IPV six protocols instead
of show IP protocols.
Shows us that we are running OSPF with this router ID with these interfaces added to OSPF and a single
normal area.
Other protocols are also listed here like a neighbor discovery.
Show IPV six OSPF neighbor.
No neighbors at the moment show IPV six route.
So there's the command.
We have no ospf rot in the routing table because we haven't formed a neighbor relationship with any
other router.
Show ip v six ospf.
A lot of options here, but let's choose.
Database.
We have a very similar database output to what we have in OSPF version two or in other words, IP version
four.
So as an example, we have one router in the database at the moment.
There are other LSA types which we won't talk about as part of the CNA, but notice LSA type eight is
also listed in the database.
So IPV six ospf inter.
So there's the command.
We're running a version three OSPF process with number one.
Router ID is one.
A lot of other information shown here, including the areas configured in this case.
It's area one and two interfaces have been put into that area.
The SPF algorithm has run once so IPV six OSPF interface instead of brief.
So here's the command and notice on the gigabit interface the link local addresses this.
It's a broadcast network type.
In other words, a election will take place.
Router one is the designated router on this interface and it has this router ID which we configured
manually.
Notice the timers.
Hello.
Timer is 10 seconds dead interval is 40 seconds.
There is no back up designated router on this interface.
So once again show IPV six OSPF neighbor shows us that there are no neighbor relationships formed on
this network.
So let's configure the other routers and form neighbor relationships and exchange routes between the
routers.