Controller Based WLANs

Enabling Capacity Alerts on AOS:8.0

Aruba Employee
Requirement:

If the device capacity get exceed then the controller should alert/trigger the user or admin about the Threshold exceeded



Solution:

In AOS 8.0  we can use the capacity alert feature to set managed device capacity thresholds which, when exceeded, will trigger alerts. The managed device will send a wlsxThresholdExceeded SNMP trap and a syslog error message when the managed device has exceeded a set percentage of the total capacity for that resource.

A wlsxThresholdCleared SNMP trap and error message will be triggered if the resource usage drops below the threshold once again.



Configuration:

In the WebUI:


1. In the Managed Device node hierarchy, navigate to the Configuration > System > More page.
2. Select Capacity Threshold.
3. Modify the capacity percentages for any of the thresholds described below,
4. Click Apply to save your settings.

 

Controlpath CPU: Set an alert threshold for controlpath CPU capacity. The <percentage> parameter is the percentage of the total controlpath CPU capacity that must be exceeded
before the alert is sent. The default threshold for this parameter is 80%.

Controlpath memory:  Set an alert threshold for controlpath memory consumption. The <percentage>  parameter is the percentage of the total memory capacity that must be exceeded before the alert is sent. The default threshold for this parameter is 80%.

Datapath CPU: Set an alert threshold for datapath CPU capacity. The <percentage> parameter is the percentage of the total datapath CPU capacity that must be exceeded before
the alert is sent. The default threshold for this parameter is 30%.

Total APs: The maximum number of APs that can be connected to a managed device is determined by that managed device’s model type and installed licenses. Use this command to trigger an alert when the number of APs currently connected to the managed device exceeds a specific percentage of its total AP capacity. The default threshold for this parameter is 80%.

Total locals: Set an alert threshold for the master managed device’s capacity to support branch and local managed device. A master managed device can support a combined total of 256 branch and local managed device. The <percentage> parameter is the percentage of the total master managed device capacity that must be exceeded before the alert is sent. The default threshold for this parameter is 80%.

Total tunnels: Set an alert threshold for the managed device’s tunnel capacity. The <percentage> parameter is the percentage of the managed device’s total tunnel capacity that must be exceeded before the alert is sent. The default threshold for this parameter is 80%

Total users: Set an alert threshold for the managed device’s user capacity. The <percentage> parameter is the percentage of the total resource capacity that must be exceeded before the alert is sent. The default threshold for this parameter is 80%.

 

In the CLI:


(ArubaMM) ^[mynode] #configure  terminal
Enter Configuration commands, one per line. End with CNTL/Z

(ArubaMM) ^[mynode] (config) #threshold
controlpath-cpu         Alert threshold for ControlPath CPU
controlpath-memory      Alert threshold for ControlPath Memory consumption
datapath-cpu            Alert threshold for Datapath CPU
no-of-APs               Alert threshold for No of APs connected
no-of-locals            Alert threshold for No of locals
total-tunnel-capacity   Alert threshold for Total Tunnel capacity
user-capacity           Alert threshold for USER capacity

 

(ArubaMM) ^[mynode] (config) #threshold  user-capacity
<value>                 Threshold value in percentage, exceeding this will send snmp trap and syslog alert

 



Verification

Sample Configuration


The following command configures a new alert threshold for datapath memory consumption:
(host) [mynode] (config) #threshold datapath-cpu 90

If this threshold is exceeded then subsequently drops below the 90% threshold, the managed device would send the following two syslog error messages.


May 14 13:13:58 nanny[1393]: <399816> <ERRS> |nanny| Resource 'Control-Path Memory' has gone above 90% threshold, value : 93
May 14 13:16:58 nanny[1393]: <399816> <ERRS> |nanny| Resource 'Control-Path Memory' has come below 90% threshold, value : 87

Version history
Revision #:
2 of 2
Last update:
‎03-26-2017 03:21 AM
Updated by:
 
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