Release Notes
  Extreme Campus Controller Customer Release Notes 
11/23/2021 P/N: 9037076-03  Subject to Change Without Notice  Page: 11 of 19 
F0615-O  
Known Restriction or Limitation 
I.D 
perform configuration changes to one of the members of a High-Availability pair 
while the peer has a different software revision. 
For High-Availability configurations, during upgrade phases or configuration restore 
operations, wait until the availability link is established and synchronized before 
attempting to make any new configuration changes. The Availability status will only 
re-establish to Synched status when both appliances are running the exact same 
firmware revision. 
During upgrade periods, the Availability link will only re-establish when both the 
appliance status of availability link and synchronization status can be found. 
Go to: 
· “Network Health" widget on the Dashboard, or 
· Administration -> System -> Availability 
Info 
ECA-776 
Recommendation settings for setup of redundant RADIUS server authentication: 
· Response Window to 5s [Default: 20s] 
· Revival Interval to 10s [Default: 60s] 
Info 
ECA-875 
SUPPORTED WEB BROWSERS 
For Extreme Campus Controller management GUI, the following Web browsers were tested for interoperability: 
•  Firefox 81.0 
•  Google Chrome 86.0 
Note: Microsoft IE browser is not supported for UI management. 
The Wireless Clients (Captive Portal, AAA): 
Browsers 
Version 
OS 
Chrome 
75.0.37770.142 
Windows 7 
Windows 10 
Microsoft IE 
11 
Windows 7 
Windows 8.1 
Windows 10 
Microsoft Edge 
42.17134 
Windows 10 
Firefox 
68.0 
Windows 10 
Safari 
Preinstalled with iOS 12.2 
iOS 12.2 
Safari 
Preinstalled with iOS 9.3.5 
iOS 9.3.5 










