From the Extreme Control Center
1. Click on Network Tab
2. Click on Devices
3.Click on World:Icon
4. Click on Site
4. Under Address Range, Click Add
5. In text boxes, add the starting and ending ip addresses to discover, to the right, add or subtract any pProfiles you wish to use.
6. Click Update
7.By default, all of the devices are added in, in addition to all other options. So use accordingly.
8. Click Save at bottom of screen
9. Click Discover at the bottom of the screen
10. Click on Operations to watch the progress
Once it is complete, new devices will appear under the device tab, and/or in any maps.