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These routers have just booted and don't have any configuration on them.

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As an example here you can see that router.

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One is asking us to enter the initial configuration dialog and I'm going to say no because I don't want

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to do that.

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This router is a virtual iOS router running advanced Enterprise Services Version 15.6.

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So these routers are essentially iOS routers.

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So first thing I'll do is configure a hostname.

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Note please that if I try and enable OSPF.

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Or rather OSPF.

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I'm told that IPV six routing is not enabled.

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We need to do some initial configuration on these routers before we can enable OSPF version three.

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And one of the obvious things we need to do is configure IP addresses.

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So on the loopback, I'm going to configure an IP address.

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Like this.

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And on gigabit zero zero, I'll configure.

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An IP address.

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As per the diagram.

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Such as this and no, shut the interface.

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So do show IP, not IP version for here.

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Interface brief.

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What you'll notice is that no IP addresses have been configured on this router.

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In other words, no IP version for addresses have been configured, but show IPV six interface brief

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shows us that this interface gigabit zero zero has this IP address as well as a link local IP address

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configured.

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And the same is true for the loopback address.

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Again, IPV six router OSPF one shows us that IPV six routing is not enabled on the router, so the

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first thing we need to do is enable IPV six unicast routing.

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Now we can configure a routing protocol.

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And in this example we have IGP, Network Mobility, OSPF and RDP, but we'll configure OSPF with a

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process ID.

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OSPF version three is once again very similar to OSPF version two.

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So the process ID is a locally significant number on the router.

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Note this message however OSPF version three IPV six could not pick a router id please configure manually.

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So that's because we didn't configure an IP version for address.

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So we now within the OSPF process.

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Need to configure a router ID of a 32 bit number.

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So do show run pipe begin ospf.

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This is the OSPF version three configuration that we've done on the router.

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Now at this point show IPV six OSPF Interface brief shows that no interfaces have been added to the

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OSPF Version three process.

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We need to go to each individual interface and type IPv6.

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OSPF the process number.

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In our example, that's process ID one, we need to specify the area and the area that we're putting

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the interface into.

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So in this example, the loopback interface is being put into OSPF.

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So the command show IPv6 OSPF Interface Brief now shows us that the loopback interface has been added

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to the OSPF process.

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Process ID is one area is one to form neighbor relationships with other routers and in this case router

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two will need to enable OSPF on gigabit zero zero on router one.

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So IPV six ospf process ID is one area that will configure is one.

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So now show IPV six OSPF Interface brief shows that both of those interfaces are added to OSPF.

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A lot of the commands that you've used previously still apply here, so show IPV six protocols instead

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of show IP protocols.

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Shows us that we are running OSPF with this router ID with these interfaces added to OSPF and a single

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normal area.

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Other protocols are also listed here like a neighbor discovery.

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Show IPV six OSPF neighbor.

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No neighbors at the moment show IPV six route.

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So there's the command.

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We have no ospf rot in the routing table because we haven't formed a neighbor relationship with any

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other router.

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Show ip v six ospf.

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A lot of options here, but let's choose.

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Database.

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We have a very similar database output to what we have in OSPF version two or in other words, IP version

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four.

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So as an example, we have one router in the database at the moment.

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There are other LSA types which we won't talk about as part of the CNA, but notice LSA type eight is

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also listed in the database.

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So IPV six ospf inter.

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So there's the command.

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We're running a version three OSPF process with number one.

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Router ID is one.

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A lot of other information shown here, including the areas configured in this case.

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It's area one and two interfaces have been put into that area.

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The SPF algorithm has run once so IPV six OSPF interface instead of brief.

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So here's the command and notice on the gigabit interface the link local addresses this.

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It's a broadcast network type.

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In other words, a election will take place.

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Router one is the designated router on this interface and it has this router ID which we configured

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manually.

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Notice the timers.

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Hello.

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Timer is 10 seconds dead interval is 40 seconds.

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There is no back up designated router on this interface.

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So once again show IPV six OSPF neighbor shows us that there are no neighbor relationships formed on

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this network.

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So let's configure the other routers and form neighbor relationships and exchange routes between the

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routers.