ExtremeCloud IQ Controller User Guide

RADIUS Server related authentication metrics are provided for troubleshooting the ExtremeCloud IQ Controller RADIUS interface.

Report Duration

From the top of the Dashboard page:

Select to set the Duration value for the time period reported. Valid duration values are:
- Last 3 hours
- Last 3 days
- Last 14 days
Select to refresh the data on demand.
Hover the mouse over a widget to display tool tip information.

Go to Tools > Diagnostics > RADIUS Servers to view the following widgets.

Health

The Health tab displays data that indicates the condition of the RADIUS servers. The Servers list provides data on the percentage of clients affected by the following:

Server Unreachable

This scorecard indicates the amount of time that the RADIUS server is unreachable.

The GUI label X%/Y minutes represents the following metrics:

Y is the number of minutes the server is down
X% is the number of minutes the server is down (Y) divided by the total sample period in minutes

The total sample period can be measured in any of the report duration values.

Dot 1x Excessive Failures

This scorecard indicates that the RADIUS connection is unstable, resulting in unsuccessful Dot 1x Transactions. The scorecard shows when the failed rate percentage is greater than 20% for the selected duration period. It also shows the number of clients disconnected during this period due to RADIUS issues.

Criterion: Defined by the change in transactions failed per sample period divided by the change in transactions issued per sample period is > 20%.

The GUI label X%/Y minutes represents the following metrics:

Y is the number of minutes where the criterion is True
X is the number of minutes where the criterion is True (Y) divided by the total sample period in minutes
The total sample period can be measured in any of the report duration values.

Excessive Delay

The scorecard indicates when the RADIUS request RTT is greater than 500ms for the selected duration period. It also shows the number of clients disconnected during this period due to RADIUS issues.

Criterion: Defined as RADIUS response divided by round trip time is > 500ms.

The GUI label X%/Y minutes represents the following metrics:

Y is the number of minutes where the criterion is True
X is the number of minutes where the criterion is True (Y) divided by the total sample period in minutes
The total sample period can be measured in any of the report duration values.

Select a server from the list and view widget data.

Expert

The Expert tab provides a comparison between selected servers for the same data points. Select the servers from the Servers list and select Apply.

Additionally, you can take the following actions on each chart:

To show or hide specific server chart data, from the key for each chart, select an individual server IP address.
Toggle data display
To zoom in, select an area of the chart and drag. To return to the original zoom, select Reset Zoom.
Chart Zoom

You can also select:

Show All Servers — To compare all servers. This refers to all selected servers. If a server is not selected at the top of the page, it is not included in Show All Servers.
Shared Tool Tip — To display server data in a comparison tool tip.

Shared Tooltip for Selected Servers shows on November, 21, 2022 at 14:20 the Dot1x Transaction Success Rate (per minute) for five selected servers. The minimum value and the maximum value are also displayed.

Example Widgets

The following figures illustrate how to use the Health and Expert widgets to understand your RADIUS performance.

From the Health tab, RADIUS Server Up indicates that RADIUS Server has been Down for 5 minutes (3% of the Last 3-Hour duration period) and no clients have been adversely affected.

Matching Sent and Received patterns indicate success.

From the Expert tab, Matching Sent/Received Patterns Indicate Success shows that the RADIUS Sent Rate pattern matches the RADIUS Received Rate pattern, indicating that the RADIUS interface is functioning.

Server Response Chart showing data before and after a server was disconnected.

From the Expert tab, Server Response Chart shows a single RADIUS server response time before and after the server was disconnected.

RADIUS Server Response showing load balance and failover configuration.

From the Expert tab, RADIUS Server Response showing load balance and failover illustrates a RADIUS server response pattern for load balance and failover configuration.