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This is one of multiple videos discussing IP version 6.

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Writing in this example writer 1 and writer 2 are connected via a serial interface.

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These writers have just booted up and have no configuration apart from a default Genesis 3 configuration

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so as an example if we use the command show IP interface brief we don't see any IP addresses configured

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on the routers and all interfaces on the As are shut down

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show IP vs 6 round shows no grants in the IP version 6 routing table because no IP version 6 addresses

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have been configured on the router and we can see that by using the command show IP version 6 interface

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brief output gives a similar information to what we would see using show IP interface brief all interfaces

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are shut down so on Route 1 I'm going to enable IP version 6 a unique cost routing and then go on to

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the serial interface and no shut the interface and configure an IP version 6 address of 2001 colon 1

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colon colon 1 slash 64.

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Now when we look at the IP version 6 routing table we see that a connected network exists as well as

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a local network the local network is the IP address configured on that interface.

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So this is the IP address that's configured on the serial zero interface which we can see as follows.

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We're using a slash 64 mask so the connected network is displayed with a slash 64 mask but the 128 but

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IP address is shown in the output as well routers will create IP version 6 of routes based on the unique

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cast IP version 6 address configured on the interface.

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So this command results in this network appearing in the writing table.

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The writer also creates the host rot or local route using 128 but prefix for the IP version 6 address

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configured on the interface.

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If we shut that interface down and then look at the writing table again you can see that the IP address

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has been removed from the writing table.

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So in the same way as we have with IP version 4 the rot only appears in the writing table when the interface

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comes up so interface serial to slash 0 is now up up.

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So we have the subnet or connected route and to the local route or host route added to the routing table.

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If the interface goes down the route is removed from the routing table or create a loop back address

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on this rather with an IP version 6 address of 2001 face colon 1 colon colon 1 slash 64.

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So show IP vs 6 rort should show us that that roster is added.

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Here it is.

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There's the connected network and there's the local or Rata IP address on it too.

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We still don't have any IP addresses configured so show IP vs 6 rot shows us no rights in the IP version

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6 routing table I'll enable IP version 6 unit cost routing and then go into the serial interface and

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shut it and configure an IP version 6 address on the interface of two thousand and one.

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Colin one.

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Colon colon 2 slash 64.

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While I'm here I'll configure the loop back address as you can see the several interfaces now come up

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on both sides so the loop back interface will be 2001.

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Colon face colon to Colon colon 1 so show IP vs 6 rot we can see multiple routes in the writing table

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here's the connected root for the serial connected route for the loop back local ranked or route around

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for the serial and loop back now wool brought it to be able to ping rider one on the serial interface.

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Answer is yes and that's because they are directly connected to one another and they are configured

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in the same subnet so rider 1 can also ping right at 2.

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We can prove that by doing a debug commands a very similar type of vision for so debug IP vs 6 ICMP

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when we do the ping we can see the output here in a similar way to IP version 4 notice IP version 4

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shows no ruts in the writing table because we haven't configured any IP version for addresses on these

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riders this network is running a peer IP vs 6 implementation wheel rather to be able to ping the loop

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back of wrought a 1 What do you think we'll run it to be able to ping the loop back of wrought a 1 debug

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IP packet will show us the results.

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So lets paying the loop back of wrought a 1 echo request is being sent and I did the wrong debug there.

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Be careful of that mistake let she's debug IP vs six pack it rather and see what happens now so this

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is better.

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We could see an echo is being sent to stop that ping now so an echo is being sent the road has picked

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this address as the source address.

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In other words the serial interface or outgoing interface is used as the source address for ICMP traffic

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something very similar will happen in IP vision for it's trying to send an echo to that address using

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this local IP address.

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With a destination set to that and the important piece is notice raft is not found again raft is not

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found.

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Roger is not found the rudder can not send traffic to that destination network because it doesn't appear

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in the IP version 6 routing table.

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So what we need to do here is configure static ruts.

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In this example because we are using a serial interface we can configure a runt using the local outgoing

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interface so very similar to IP version 4.

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You're going to use the IP vs 6 right command and specify the destination right which is 2001 face colon

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1 colon colon slash 64 and the local outgoing interface is going to be serial to slash zero.

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So now can we ping that network.

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Yes we can.

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We're getting a lot of debug information so I'll turn off the debug scrolling up you can see that the

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ping succeeded and if we do that again notice we can ping the loop back of route of one a of one doesn't

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know about the loop back brought it to.

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So we need to configure that so IP v 6 runs destination is two thousand and one colon face colon two

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colon colon one slash 64 outgoing interface is gonna be serial to slash zero so show IP six round we

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can see that romped added to the writing table and we should be able to paying two thousand or one face

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to Colon column one and that works.

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So again just like with IP version for you need to have a root in the routing table to be able to reach

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a destination network.

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In this example we've added routes using static routes to the IP version 6 routing table and using the

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local outgoing interface rather than next top address so show run pipe include route shows us that we

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are using the outgoing local interface to get to the destination network that works well in point to

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point serial connection such as this but won't work well when using ethernet when using ethernet you

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should use the next hop IP address these riders are using C 30 725 software version 12 that four of

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the Iaw in a subsequent video I'll configure static graphs using next top IP address but I'll use version

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15 software and I'll use viral images to do that.

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Hope you've enjoyed this video.

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