The following is the traffic flow of the topology illustrated in
•
The AP establishes the active tunnel to connect to the primary ExtremeCloud Appliance.
•
The ExtremeCloud Appliance sends the configuration to the AP. This configuration also contains the
port information of the backup ExtremeCloud Appliance.
•
On the basis of the backup ExtremeCloud Appliance port information, the AP connects to the
backup ExtremeCloud Appliance via the backup tunnel.
•
After the connection is established via the backup tunnel, the backup ExtremeCloud Appliance
sends the backup configuration to the wireless AP.
•
The AP receives the backup configuration and stores it in its memory to use it for failing over to the
backup ExtremeCloud Appliance. During this entire time, the AP is connected to the primary
ExtremeCloud Appliance via the active tunnel.
Session availability applies only to the following topologies:
•
Bridge Traffic Locally at AC
•
Bridge Traffic Locally at AP
Availability Pair Settings
Table 79: Availability Pair Settings
Field
Description
Peer IP Address
Physical VLAN address of the paired appliance. This is the IP address
of the "Physical 1" interface (port esa0), which matches the VLAN
definition under
System
>
Interfaces
.
Role
Select the role of the paired appliance. Valid values are Primary or
Backup.
Note: The configuration of the Primary appliance is copied to the
Secondary appliance.
Auto AP Balancing
Select the load balancing configuration for the Availability Pair.
In a Availability Pair, an AP establishes an active tunnel to one
appliance and a backup tunnel to the other appliance. The active
tunnel is used to pass the client data over tunneled topologies.
•
In an
Active-Active
configuration, approximately half of the APs
establish an active tunnel to the primary appliance. The remaining
APs establish an active tunnel to the backup appliance, spreading
the load across the Availability Pair.
•
In an
Active-Passive
configuration, all APs establish an active
tunnel to the primary appliance. The secondary appliance is used
for failover only.
Related Links
Mobility Settings
To configure ExtremeCloud Appliance as an agent in a mobility domain:
1 Go to
Admin
>
System
>
Availability
.
Administration
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