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This is another OSPF troubleshooting lab.

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Now, let me warn you, this is a difficult lab.

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So if you don't get it right, don't worry.

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I'll show you in the next video.

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How do you complete this and work it out and how to fix it?

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You've been told that PC one on the left cannot ping PC two on the right.

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So here's PC one.

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Once again, IP addresses this can ping.

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PC two, which has this IP address.

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And to confirm that that's the IP address of PC two.

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PC two is not able to ping PC one.

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Destination host is unreachable.

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So I'm capturing packets on this link using Wireshark.

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Why is the network not working?

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Have a look at the OSPF packets.

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See if you can find out what the problem is.

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See if you can work out what the resolution is to this network issue.

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See if you can figure out just by looking at the Wireshark captures what the issue is.

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In the next video, I'll show you how to resolve this issue, explain some things, and show you how

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to fix it.

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What I'll do at this point is stop the capture.

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And then save the shock captures ospf tfrs three.

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So download the attached Wireshark CAPTCHA and see if you can work out what the issue is.