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This is one of a multiple IP version 6 troubleshooting videos we've been told that rather one in this

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topology cannot ping router 3.

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So let's verify that he has wrote a one.

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So let's ping 2001 face colon colon three ping DOESN'T SUCCEED WE GET unreachable messages now show

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IP rot won't help you in this topology because there are no IP version 4 addresses configured on the

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router we can see that gigabit to 0 00 is up and the loop back interfaces up but what we need to do

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is use show IP interface brief to see the IP addresses configured on the router we can use trace front

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to see how far traffic gets in this example we can see that the trace gets to 2001 colon 1 colon colon

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2 which is brought at 2 and again we could use commands such as Show IP brought to view the writing

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table Harada 1 has a default route 2 router to traffic is getting 2 rather 2 but is going no further

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so let's have a look at Rider 2

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ping 2001 face 3 notice would be told no valid route to the destination.

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So what do you think I should type now to verify what's going on.

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Should I look at layer 1.

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So use come ons such as Show IP interface brief to verify Layer 1.

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In this example Layer 1 is up up notice the interface is up so it looks like layer 1 is up and layer

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2 is up should I use command such as Show C to be neighbors to verify that layer 2 is working.

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In this example we can see that rod a 3 is connected to write a 2 so that implies that layer 2 is working.

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Show IP rot won't help us because they are no IP version 4 rats but what about show IP vs 6 rot.

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Can you see the problem in this output

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is there romped to the loop back of wrought a 3 notice there is no raft.

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Two rather three in the running table show IP vs six robbed include face only shows us a static grant

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to brought a one and a local connection on brought a to.

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So again show IP these six of rot.

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There's no rot in the routing table.

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Show IP vs 6 protocols.

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We don't have a writing protocol such as rape or SPF enabled but we do have static Roth's configured

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to show run pipe include route we can see a static route to the loop back of route a one and then there's

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a default prompt to Router 3.

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Notice the next top is 2001 colon to Colon colon so can we read paying 2001 colon to Colon colon to

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notice we told that there's no rot in the routing table.

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In other words we don't have a route to a router that's directly connected to us.

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Can we ping ourselves.

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2001 colon to Colon colon one we told that we don't have a route to our local IP address that doesn't

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look right to show IP vs 6 interface.

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Brief.

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What's the problem in the South put.

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If you need to pause the video but what's the problem.

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Notice here gigabit 0 1 has an IP address configured of 2001 colon 1 colon 2 colon colon 1 when in actual

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fact it should be 2001 2 1.

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There's an extra 1 in the network so show run interface gigabit 0 1.

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Notice the extra 1 in the network address.

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So let's fix that so no.

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IP vs 6 address IP vs 6 address.

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2001 2 colon colon 1 slash 64.

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Can we ping 2001.

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Colon 2 colon colon 2.

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Now we can ping router 3.

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What about the loop back.

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Override a 3 we can ping the Lupica wrote a 3 so that looks promising.

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What about from the one paying the loot back of wrought a 3.

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So yes that looks good to we can ping the loot back of rudder 3 and we can paying the physical interface

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of rudder 3.

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Be careful with your IP addresses.

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Look at your running tables look at the configuration of your IP addresses to verify that it's correct.

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Previously we didn't have the static raft in the running table but now we do.

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So previously the static grout was missing.

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We had a static raft to the Lupica wrote a one but no static dropped to the loop back of Road 3.

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Now we can get to the loop back of rudder 3 because of the default prompt.

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I hope you enjoyed this video.

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If it's been of benefit to you please like it.

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And please subscribe to my YouTube channel.

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I wish you all the very best.