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This module takes a look at the use of superscopes and a superscope is simply a combination of multiple scopes. It can be used to combine two or more scopes, and in fact you can start to create a superscope with a single scope and then just add to it as you need to. And each of the scopes in the superscopes will serve multiple logical subnets on the same segment. So it's a way of grouping multiple scopes into a single administrative entity and you do it when you want to deploy multiple logical subnets on the same physical segment. Sometimes it helps to see pictures, I've got one here that is believe it or not nicer than the ones I draw on the Paint pad, and here's an instance where you might use a superscope. Here we have a single physical subnet and a single logical subnet. So in this subnet A everyone's on the 192.168.1 network. How do I know it's on 192.168.1 network? Because of the subnet mask here. So here a superscope is not needed, just create a scope to hand out IP addresses to this subnet here, but you can sometimes implement multiple logical subnets on that subnet and here's what this would look like. Now I realize that's a bit of jump cut but I have to go get the picture and show it, so you just have to bear with me on this particular module here, the jerkiness of the cutting here, but now the picture's changed a little bit and here's an instance where we might employ a superscope. We have a single DHCP server but we have multiple logical subnets, we have the 192.168.168.2 and 68.3 networks all on this same subnet or physical segment. We create the superscope and we include scopes 1, 2 and 3 in that superscope, so that this DHCP server rather than handing out a single range of IP addresses will handout 3 ranges of IP addresses. You can also employ superscopes across a router, in a routing environment, as follows and here we are in this 3rd example. So in the first one we didn't a need superscope, second one is a good instance for superscope and here is another good instance for one. We have 2 subnets now, or 2 physical segments. This segment is only handing out IP addresses from a single range, the one network, 192.168.1 network, so we create a single scope for the computers on subnet A. Now we have a router that's been configured with a relay agent, or a BOOTP forwarder or 1542 compliant router, in other words something it will pass discover messages back and forth between the DHCP server and DHCP clients. Discover often relay all those messages. Over on subnet B however notice we have clients from multiple scopes, multiple logical subnets. So we have 192.168.2 network and the 3 network. So we include both of these in a single superscope. So the superscope is configured for this server to handout IP addresses to subnet B. The single scope with the 1 network is configured, so actually I have 2 entities here. A single scope, well we have 3, we have scope 1, scope 2 and scope 3, but we combine scopes 2 and 3 into a single superscope. So we have two administrative entities. 1 scope 1, 2 superscope that includes scope 2 and scope 3. So in other words the long and short of it is that's not a very common way to implement network environments. So you might not see a need right away in your administrative career for use of superscopes. They are easy to setup, you will probably see some mention of them on the exam, so let's show you how to do those here. The tool that you use is the DHCP console, the MMC snap-in and I've added another scope here, I've added the 3 network and the 5 network. And you can take these existing scopes and create a superscope from them. So you right click on the server itself, right under new scope is new superscope, click on next, give the scope a name, super, superscope and then we can select one or more of the scopes. As I said we can just select 1 and then add to it as we go along or we can select both of them hold down the control key to select them both. Click on next and then you have created your superscope. So that's the name superscope server includes both of these scopes, we can still have the option to set different scope options, on the scopes that reside now within our single administrative entity. You can create this with a single scope and then to the superscope you can add additional scopes and here we just walk through the new scope wizard, as you did before and configure an IP address range. So cancel out. This is how you setup a superscope for use with DHCP.