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So we're configuring basic IPv6, we're on Router 2. Now let's configure our Serial Interface and get it up and talking to Router 3. So I'll go back to Config Mode, Interface Serial 0 slash 0, IPv6 Address, let's verify it with our topology, 2001:2::1 on Router 2. So let's do 2001:2::1 slash 64 and do No Shut on this guy as well. And now Router 2 is fully configured. Let's go over to Router 3 and get him set up. So we'll go into Config T, we'll do IPv6 Unicast Routing and let's check the interfaces for this guy, let's drag this over here, look at Router 3. That's Fast Ethernet 00 and Serial 00 so Interface Fast Ethernet 0 / 0. It's Subnet Address is 2001:3:: and his address is ::2. So we'll do IPv6 Address 2001:3::2 slash 64. No Shut and then Interface Serial 0 slash 0, IPv6 Address 2001:2::2 on this Subnet slash 64 and do a No Shut on this guy here as well. We'll do an IP or a Show IPv6 Interface Serial 0 slash 0 to make sure that it's Up, Up, it is. It joined the right Multicast groups and all that other nice stuff. So now we're going to go over to Router 4, Router 2 shows it as up as well. So we're going to go over to Router 4 and on Router 4 I'm going to Debug part of the process so that you can see how Router 4 verifies that it's Link Local address is actually a Global Unique Address on the Link Local. So we're going to Debug, IPv6, ND for Neighbor Discovery and this is pretty concise although it, it can be a little confusing if you're not used to it. So now we'll go ahead and just configure this guy and once we bring this interface up, this Fast Ethernet 00 up, you'll actually see it go out and discover all the neighbors on this Subnet, all one of them in this case. So Config T, IPv6 Unicast Routing, Interface Fast Ethernet 0 slash 0, this is IPv6 address 2001:3::1 slash 64 and do No Shut. So if we Exit out. In just a second we'll see all of this and I will just do U All so that the screen doesn't scroll and let's step through this whole process here real quick. So the first thing that happens when this interface comes up, is it says I'm sending a Neighbor Solicitation, that's what that NS is, I'm sending a Neighbor Solicitation for this Link Local address on Fast Ethernet 00. Basically that's saying hey, does anyone out there have this Link Local address? Now DAD is the Duplicate Address Detection, and Duplicate Address Detection comes back and says, well nobody said they had this so this Link Local address is unique. Then it comes back and says, sending a Neighbor Advertisement that says oh by the way everybody, I'm claiming this address. It also does the same thing for the address on the Subnet the 2001:3::1. It says hey, Neighbor Solicitation, anyone out there got this address? No, this address is unique, fine I'm sending in a Neighbor Advertisement for this address and it also starts sending Route Advertisements to the other routers, saying hey I'm a router that's on this network and you notice the address it came from or I'm sorry the address it's going to actually. FF02::1. Now if we do Show IPv6 Interface Fast Ethernet zero slash zero. Now these Group addresses are Multicast addresses and quite simply FF02::1 is all nodes on the network or all nodes on this segment to be more specific. If I send a Multicast to that then every node on this network will see this particular packet and will process it. It's pretty much close to a Broadcast in this case. FF02::2 is all routers on this segment. So if a workstation came up and said hey I want to know what routers are out there, what paths off this segment do I have? It just sends a Multicast out to that Multicast address and says hey, how can I get off this segment? All the routers respond to me. And you also have two others, FF02:1 and this is the Link Local address for the Multicast. So this is the Global Address on, on the network, this is the Link Local and this is the same thing for the Local Segment, the FF02::1. You notice that 5800 is the last part of the Link Local address up here. So to be more clear, this second one is the Link Local Multicast, this one here is the Network Multicast and this one is all routers and all devices on the network. So now that we've got IPv6 all set up and configured let's forge on into the next lab and set up RIPng.
| Course: | Implementing Cisco IP Routing (642-902 ROUTE) |
| Author: | Greg Dickinson |
| SKU: | 34291 |
| ISBN: | 978-1-61866-028-2 |
| Release Date: | 2011-12-28 |
| Duration: | 10 hrs / 105 lessons |
| Work Files: |
Yes |
| Captions: | No |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |