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Now let's have a look at the running configuration on router one.

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The first thing I'll show you is the configuration on this interface, and let's compare that to the

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configuration on gigabit zero zero on router two.

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So IP address of right of one IP address of router two, we can see the OSPF password configured on

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both routers.

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We can see the OSPF properties configured default priority is one.

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In this case I set it manually and then what I'll do is search for the OSPF configuration.

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So show run pipe section OSPF that will show us the configuration of the OSPF process.

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Now we are seeing those OSPF commands on the interface over there.

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So this is the piece I want to concentrate on.

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Process numbers can be different once again, that doesn't matter, but notice we've got authentication

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on Area Zero.

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That essentially means that this password over here needs to be the same as this password over here.

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You can set passwords differently on a per interface basis.

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But yeah, we've got the passwords on those two interfaces, not on other interfaces.

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Those two interfaces are in Area zero.

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So authentication is configured on Area Zero.

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On this side, all interfaces using a wild card are put into area zero.

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On the side, all interfaces in the ten range are put into area zero.

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We can see there once again by using the command show IP, OSPF interface brief.

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So show IP OSPF interface brief.

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We can see here that both these interfaces on area zero on router two, same is true on the side.

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Both interfaces gigabit 0001 on both routers on area zero.

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So just by using Wireshark, you can actually work out a lot of this information.

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This proves, however, that what I was telling you in the Wireshark capture is correct.

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I hope you enjoying this.