Extreme Networks Summit WM User Manual page 248

Availability and session availability
NOTE
If you are using Bridge Traffic Locally at WM WM-AD, the WM-AD must have the DHCP Option configured as None.
5 If the same WM-AD (WM-AD peer) is not configured on the secondary Summit WM Controller, click
Synchronize. The following page is displayed.
248
Summit WM User Guide, Software Version 5.3