EWS Series User Manual

106
12 High Availability
The Edgecore HA design principle is to use redundancy in achieving higher availability with minimum
impact during service transition. The Edgecore HA approach implements a dedicated message link
between ACs (Access Controller) to create an N + 1 redundancy system where N is ≤ 3. Once the HA link
has been established, the Active ACs will be servicing all network traffic while the Standby AC will be in
hot-standby ready to take over network service in case an Active AC can no longer provide service.
1. Edgecore HA feature is software determined to be enabled or disabled.
- When enabled, LAN1 port will become the dedicated HA port.
- When disabled, LAN1 remain its normal function as LAN port.
2.
The Web UI has a configuration item to designate this AC as either “Active” or “Standby” when HA
feature is enabled.
3. All HA configuration are manually applied. This includes AC role as an Active or Standby as well as
the HA pair restoration after an AC goes down.
4.
HA link once established synchronizes all system configurations, user databases, user online status,
system resource status, managed AP profile from the Active AC to the Standby AC.