On three.
We told to enable OSPF using the interface command so we're not going to use the network command on
router three years writer three Show IP interface brief shows us the interfaces and IP addresses configured.
We've got gigabit at zero zero and gigabit zero one.
So confetti, rather.
OSPF won.
Now, the difference is we go on to the interfaces and here we use the command ip ospf.
We need to specify the process ID that we previously configured.
So one and then we specify the area to put that interface into.
So gigabit is zero, zero is now in area zero gigabit is zero one up key twice put to that into OSPF
area zero.
I can do the same thing with a loopback interface.
Put that into OSPF area zero.
So show run shows us that we've got OSPF configured on the individual interfaces and globally we've
got OSPF configured.
So the difference now is we configuring OSPF on individual interfaces and globally configuring OSPF,
but we're not using the network command show IP protocols.
Notice the difference in output.
When compared to rather to.
So I'd rather to show IP protocols.
That's a very different to what we see over here.
Now, packet tracer doesn't show the output correctly.
A real router will show it slightly differently to this.
So if you don't see anything here in the exam, just confirm that the interfaces are configured in OSPF
by using the show ip ospf interface command.
So this interface gigabit is zero zero is configured in OSPF.
So is this interface gigabit zero one.
And so is the loopback.
So we've got all three interfaces configured in OSPF and we should see OSPF neighbor relationships.
So on router three, we see a neighbor relationship to router to make this bigger notice.
The interface used is gigabit zero one on router to show IP OSPF neighbor we've got two neighbor relationships,
one to route one and one to router three.
Reporter one is the designated reporter on the segment.
Reporter three Is the backup designated writer on the segment.
So on router three, we can see that writer two is the designated writer on the segment.
I'll talk about designated writers and backup designated writers in a separate video.
Show IP route shows us that we've learnt a route through OSPF.
There's the loopback of writer one.
Here's the loopback of router two.
Here's Network ten 110.
Over here.
So that looks good.
Can we ping rather one?
Yes, we can.
Can we ping the loopback of router two?
Yes, we can.
Can we ping ten 111?
Yes, we can.
So that looks great.
Again, the configuration here is different to what we did on previous routers.
On previous routers, we didn't configure OSPF on the interface, but we did do that here.
We used a network commands on other routers on this router.
There are no network commands.
Okay.
So that looks great.
Now we need to configure router for.