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QOD 8/28 - DHCP scopes
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| blackwidow 2003-08-28, 3:26 am |
| I have a single DHCP on a win2k server box. I ask you to create 2 scopes on it with following paramters:
ScopeSales:
Beginning IP: 170.10.35.1
Ending IP: 170.10.40.255
Subnet Mask: 255.255.224.0
ScopeMarketing:
Beginning IP: 170.10.45.1
Ending IP: 170.10.50.255
Subnet Mask: 255.255.224.0
Can you create these two scopes on the DHCP? | |
| cramersaunders 2003-08-28, 10:46 am |
| With the subnet mask of 255.255.224.0 you change subnets every 32 so the subnets are
32, 64, 96, 128 etc.
When you look at the IP Adresses you see that the adress for scope 1 (Subnet ID)
170.10.35.x to 170.10.40.x falls into the first subnet group 32 to 63. You can only create one scope in the Subnet so that the second IP Adress which also falls into the first subnet cannot be created
Scope 2 (Subnet ID)
170.10.45.x to 170.10.50.x
The first subnet is
170.10.32.x to 170.10.63.x
Because both Scopes fall into the same subnet you cannot create both scopes | |
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| We're not looking at a single physical network segment with multiple logical IP networks, so a superscore wouldn't apply.
Both scopes you would be trying to create are located on the same 170.10.32.0 subnetwork. I believe the addressable host range is 170.10.32.1 to 170.10.63.254. We only have one DHCP server and we will only be able to create one scope per subnetwork in this environment, so my answer is No. | |
| blackwidow 2003-08-28, 7:29 pm |
| Cramersaunders and Spid win! 
You both are right in realizing that the ranges i mentioned are part of the same subnet, and if you tried to create the second one after creating the first, DHCP will give you an error of overlapping scopes. For those who want to verify in labs/office/home, give it a shot on a real DHCP and check out the error.
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| nero64 2003-08-29, 9:50 am |
| Cool i just learnt something. Keep posting Widow. |
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