This is one of a multiple IP version 6 troubleshooting videos we've been told that rather one in this
topology cannot ping router 3.
So let's verify that he has wrote a one.
So let's ping 2001 face colon colon three ping DOESN'T SUCCEED WE GET unreachable messages now show
IP rot won't help you in this topology because there are no IP version 4 addresses configured on the
router we can see that gigabit to 0 00 is up and the loop back interfaces up but what we need to do
is use show IP interface brief to see the IP addresses configured on the router we can use trace front
to see how far traffic gets in this example we can see that the trace gets to 2001 colon 1 colon colon
2 which is brought at 2 and again we could use commands such as Show IP brought to view the writing
table Harada 1 has a default route 2 router to traffic is getting 2 rather 2 but is going no further
so let's have a look at Rider 2
ping 2001 face 3 notice would be told no valid route to the destination.
So what do you think I should type now to verify what's going on.
Should I look at layer 1.
So use come ons such as Show IP interface brief to verify Layer 1.
In this example Layer 1 is up up notice the interface is up so it looks like layer 1 is up and layer
2 is up should I use command such as Show C to be neighbors to verify that layer 2 is working.
In this example we can see that rod a 3 is connected to write a 2 so that implies that layer 2 is working.
Show IP rot won't help us because they are no IP version 4 rats but what about show IP vs 6 rot.
Can you see the problem in this output
is there romped to the loop back of wrought a 3 notice there is no raft.
Two rather three in the running table show IP vs six robbed include face only shows us a static grant
to brought a one and a local connection on brought a to.
So again show IP these six of rot.
There's no rot in the routing table.
Show IP vs 6 protocols.
We don't have a writing protocol such as rape or SPF enabled but we do have static Roth's configured
to show run pipe include route we can see a static route to the loop back of route a one and then there's
a default prompt to Router 3.
Notice the next top is 2001 colon to Colon colon so can we read paying 2001 colon to Colon colon to
notice we told that there's no rot in the routing table.
In other words we don't have a route to a router that's directly connected to us.
Can we ping ourselves.
2001 colon to Colon colon one we told that we don't have a route to our local IP address that doesn't
look right to show IP vs 6 interface.
Brief.
What's the problem in the South put.
If you need to pause the video but what's the problem.
Notice here gigabit 0 1 has an IP address configured of 2001 colon 1 colon 2 colon colon 1 when in actual
fact it should be 2001 2 1.
There's an extra 1 in the network so show run interface gigabit 0 1.
Notice the extra 1 in the network address.
So let's fix that so no.
IP vs 6 address IP vs 6 address.
2001 2 colon colon 1 slash 64.
Can we ping 2001.
Colon 2 colon colon 2.
Now we can ping router 3.
What about the loop back.
Override a 3 we can ping the Lupica wrote a 3 so that looks promising.
What about from the one paying the loot back of wrought a 3.
So yes that looks good to we can ping the loot back of rudder 3 and we can paying the physical interface
of rudder 3.
Be careful with your IP addresses.
Look at your running tables look at the configuration of your IP addresses to verify that it's correct.
Previously we didn't have the static raft in the running table but now we do.
So previously the static grout was missing.
We had a static raft to the Lupica wrote a one but no static dropped to the loop back of Road 3.
Now we can get to the loop back of rudder 3 because of the default prompt.
I hope you enjoyed this video.
If it's been of benefit to you please like it.
And please subscribe to my YouTube channel.
I wish you all the very best.