ExtremeCloud IQ
Controller provides the Availability Pair feature to
maintain service availability in the event of an outage. The Availability Pair feature allows
both AP and client statistics to be available on both sides of the high availability
configuration.
Go to Admin > System > Availability and configure the Availability Pair settings.
Availability
Standalone. The appliance does not have an availability
partner in the event of a failover.
Paired. The appliance is paired with
another appliance in the event of a failover.
When configuring an availability pair consider the following information:
ExtremeCloud IQ
Controller directly
balances capacity allocations across both appliances in an availability pair. Adoption
Capacity is additive. For example, to support a 600 AP Capacity, you can purchase a 500
Device Capacity and a 100 Device Capacity. The availability pair shares the installed
capacity to the 600 limit. You can enter the entitlements on either system in the pair.
However, when purchasing capacity license SKUs, make sure that none of the license
blocks exceed the maximum adoption capacity for any individual system.
An availability pair can be configured
only within the same ExtremeCloud IQ
Controller models.
Enable and configure NTP: Network Time settings on each appliance of an availability
pair must be identical for the configuration update process to be
successful.
Use the Network Health chart on the ExtremeCloud IQ
Controller Dashboard
to monitor the Availability Link Status and the Synchronization Status for an
availability pair.
Switch configuration and
statistics are synchronized between the primary and backup ExtremeCloud IQ Controller.
RF Domain database is
synchronized. RF Manager engines work from a synchronized database to preserve and
respect AP SmartRF state on failover.
Access points are not automatically upgraded. You
must initiate the AP upgrade manually after both controllers in an availability pair are
upgraded.
The following status data is replicated on the partner node of
an availability pair:
