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Another very important skill that you need is the ability to troubleshoot networks.

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This is an OSPF troubleshooting lab.

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See if you can work out by looking at the Wireshark captures.

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What's the problem in this network?

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So I'm going to give you this Wireshark capture.

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So have a look at the attachments, depending on what platform you're using and then download this Wireshark

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capture.

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I'm going to start the Wireshark capture on the link between the switch and the router, so between

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switch one and router two so we can see the Wireshark capture.

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I'll start up these routers now.

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The issue in this network is that PC one is not able to ping PC two, so PC one can't ping PC two for

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some reason.

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Okay.

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So here's PC one.

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IP address of PC one is ten 111.

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Can it ping pc to.

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At the moment it says host unreachable.

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His PC, too.

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Now I know these IP addresses, but notice there's the IP address of PC two.

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Can it ping PC one?

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At the moment we've got destination host unreachable.

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So have a look at the Wireshark capture and see if you can troubleshoot.

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Why?

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The network is not working.

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I'll stop this Wireshark capture at this point so it doesn't get too big.

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This is the Wireshark capture that you need to use.

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So.

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OSPF Troubleshooting Lab one.

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So see if you can find out why OSPF is not working.

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What's the problem in this network?

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Download the attached Wireshark capture.

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See if you can troubleshoot it.

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In the next video I'll show you the answer to this by troubleshooting the network through this Wireshark

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capture.