Monitoring Controller Clusters

After adding controller clusters to AirWave, you can get a quick cluster status on the Controller Clusters dashboard. You will find a count of the controllers, APs and clients are associated with these clusters at the top of the page and cluster information, including fault tolerance in the table beneath the counters.

You can access the Controller Clusters dashboard by navigating to Devices > Controller Clusters.

Figure 1  Controller Cluster Dashboard

Table 1 describes the fields in the Cluster table. You can select any column heading to sort the data, or enter a text into the column search fields to filter the results.

Table 1: Clusters Table

Field	Description
Cluster Name	Name of the controller cluster.
Controller Count	Number of controller in the cluster.
APs	Number of APs associated to controller in the cluster.
Clients	Number of clients connected to controller in the cluster.
Cluster Status	An orange circle indicates that 1 or more cluster controllers is down. A green circle indicates that all controllers are active
AP Capacity	A green circle indicates that the cluster is below 60% AP capacity. A yellow circle indicates that the cluster is between 60% and 80% AP capacity. An orange circle indicates that the cluster is at greater than 80% AP capacity.
Client Capacity	A green circle indicates that the cluster is below 60% client capacity. A yellow circle indicates that the cluster is between 60% and 80% client capacity. An orange circle indicates that the cluster is at greater than 80% client capacity.
Version	Displays the AOS version running on all the controllers in the cluster.
Free AP Count	Indicates how many APs you can add to a controller before you must add another controller to the cluster.
Hitless Failover	Indicates whether the cluster can handle a hit less failover. The cluster must be L2-connected.
Max Controller Failover	Indicates how many controllers can survive a failover.
Mobility Manager	Displays the host name of the Mobility Conductor managing the cluster.
Action	Let's you delete the cluster the cluster from AirWave.

Viewing Details about the Controller Cluster

From the Clusters table, you can click on the cluster name to open the Cluster Detail page, which displays graphs, controller information, and cluster events.

Capacity Graphs

The graphs show:

• AP Capacity. This graph shows the percentage of a cluster's total AP capacity being used and the percentage of AP capacity being used on each controller in the cluster.
• Client Capacity. This graph shows the percentage of a cluster's total client capacity being used and the percentage of client capacity being used on each controller in the cluster.

Hover your mouse over any section of these graphs to view detailed statistics for that point in the graph. To change the time interval displayed in this graphic, click the schedule toolbar at the top right corner of the page.

Controller Statistics

Table 2 describes the fields in the Controllers table. You can click any table heading to sort the table by that column criteria, or enter a text string into the entry field at the top of any column to filter the table by that value.

Table 2: Controllers Table

Field	Description
Name	Name of the controller in the cluster.
IP	IP address of the controller in the cluster.
Status	An orange circle indicates that the controller is down. A green circle indicates that the controller is active.
AP Capacity	A green circle indicates that the controller is below 60% AP capacity. A yellow circle indicates that the controller is between 60% and 80% AP capacity. An orange circle indicates that the controller is at more than 80% AP capacity.
Client Capacity	A green circle indicates that the controller is below 60% client capacity. A yellow circle indicates that the controller is between 60% and 80% client capacity. An orange circle indicates that the controller is at greater than 80% client capacity.
Role	Displays the controller's role within the cluster, either Leader, Member, or Isolated Leader.
Type	Displays the controller model type.
Version	Displays the version of AOS running on the controller.

Monitoring Cluster Events

The Events table displays a description and time stamp for each cluster event. In Figure 2, you can see events when a cluster member is deleted, crosses a capacity threshold, or changes its role within the cluster. For information about creating a controller cluster trigger, see Device Triggers .

From AirWave 8.215.1, the controller cluster events also display the following events:

• Add or Delete controller to a cluster

• Critical process down (AUTH, DDS, STM, TNM, ISAKMPD restart)

• VLAN mismatch event

• Cluster node down

• Cluster state change from L3 to L2 and vice versa

Figure 2  Cluster Events

Where to Find Additional Cluster Information

The Devices > Monitor page also displays cluster information for controller and APs associated to a cluster.

The Device Info section of the Devices > Monitor page for a cluster controller includes the name of the cluster to which that controller belongs.

The Device Info section of the Devices > Monitor page for an AP associated to a cluster controller displays information about its active controller and its standby controller . Figure 3 shows the Devices > Monitor page for an AP associated to a cluster member.

Figure 3  Devices > Monitor page for an AP in a Controller Cluster