Extreme Campus Controller

 View Only

 How the E2122 HA works when one unit fail ?

André Perazzelli's profile image
André Perazzelli posted 05-06-2022 08:51
Does a pair of E2122 continue to support 32000 sessions if one of the two devices stops working (breaks down) ?
Paulo Francisco's profile image
Paulo Francisco
Hi Andre,
Yes. In an High Availability setup, while AP balancing may be distributed based on HA mode (Active-Active, Active-Passive, Site-Assigned) each controller is engineered to be resilient to the whole capacity of the pair. I.e In the case of Failover event (Controller shutdown/upgrade for example), the peer controller will support the entire capacity of the pair. In the case of a pair of E2122, the 'surviving' member would indeed support up to 4000 APs and 32,000 end-user sessions.