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Access Point Metrics

Juniper Mist™ uses the connectivity status, VLAN status, and firmware compliance to measure the overall operational health of the APs. With these metrics, you can proactively monitor the performance of APs at your site and quickly identify and troubleshoot connectivity and firmware compliance issues.

You can view these metrics when you go to the Access Points page on the Juniper Mist portal. On this page, each metric is represented as a percentage and is color coded. Here's the mapping between the color and the percentage range:

  • Green—>98.5 %

  • Orange—80 % to 98.5 %

  • Red—<80 %

The following example shows the metrics that you see on the Access Points page.

You can view the following metrics on the Access Points page:

  • Connection Status—This metric shows the percentage of APs that are online at your site. Click this metric to see the list of APs that are offline. In this example, you can see that Juniper Mist reports that two APs are experiencing connectivity issues. Notice that Juniper Mist also lists the reasons—No IP Address and No Ethernet Link—that cause these issues. You can then investigate further by observing the LED blink patterns and take corrective actions. See What Does the AP Status LED Indicate?.

  • VLANs—This metric shows the percentage of APs for which all the wired VLANs are active. Click this metric to view the APs that have inactive VLANs and the respective VLAN IDs. Inactive VLANs result in users being unable to obtain an IP address. This issue might arise if you did not correctly configure the VLAN on the switch port to which the AP is connected.

  • Version Compliance—This metric shows the percentage of APs that use the same firmware version. Juniper Mist uses the following formula to calculate the version compliance percentage:

    (APs running the expected version per model / Total number of APs per model)*100

    • If you selected the Enable Auto Update check box under the AP Firmware Upgrade section in the Site Configuration page, the Version Compliance metric displays the percentages as follows:

      • 100% if all the APs run the version that you've selected for the automatic firmware upgrade.

        Note:

        If you enabled the automatic update option, then the firmware on the APs is upgraded only if the current firmware version number of the APs is lower than that of the selected version for automatic upgrade.

        If the APs run a firmware version that is later than the version configured for the automatic upgrade, Juniper Mist does not downgrade the firmware version.

      • 0% if none of the APs run the configured version for the automatic update.

      • Less than 1 % if less than 1 % of the APs run the configured version for the automatic update.

    • If you disabled the Enable Auto Update option under the AP Firmware Upgrade section in the Site Configuration page, Juniper Mist considers the most common firmware version across all the APs (per AP model) as the compliant version. For example: If three Juniper® AP41 High-Performance Access Points run version 0.7.20383 and two AP41 Access Points run version 0.5.17445, then Juniper Mist considers 0.7.20383 as the compliant version.

    You can click the Version Compliance metric to view the APs that run noncompliant firmware versions.

    Note that version noncompliance has no impact on AP performance. If all the APs per model run the same firmware version and if the version is different from the version that you have configured in the AP Firmware Upgrade settings, the Version Compliance metric shows 0%. If you clear the Enable Auto Update check box, the percentage changes to 100%.

  • AP Switch Redundancy—Juniper Mist calculates and assigns a redundancy score for every AP in a site. To arrive at this score, Juniper Mist first checks for the top RF neighbors with the strongest RSSI. It then checks whether these top RF neighbors are connected to a different switch or stack member.

    The following are the redundancy scores:

    • 1—Indicates no redundancy. All the top RF neighbors are connected to the same uplink switch or stack member that the AP is connected to.
    • 2—Indicates good redundancy. At least one top RF neighbor is connected to a different uplink switch or stack member.
    • 3 and greater—Indicates excellent redundancy. At least two top RF neighbors are connected to two different uplink switches.

    Juniper Mist recommends a redundancy score of 2 or more for RF redundancy, which ensures continuous connectivity thus ensuring a seamless experience for users. A site with APs connected across multiple switches spread over a deployment area provides greater redundancy. For example, suppose a switch in a deployment area fails, and an AP connected to that switch goes down. Clients connected to that AP will continue to have a good wireless service in that area if the neighbor APs are connected to different switches.

    The AP Switch Redundancy metric indicates the percentage of APs in a site that have a redundancy score of at least 2. You can click the AP Switch Redundancy metric to view the list of APs that have a redundancy score less than 2.

    Alternatively, you can view the redundancy scores on the Switches page if you have uploaded a floorplan for your site. From the left menu of the Juniper Mist portal, select Switches and then click the Location tab. This view provides a visualization of AP distribution across switches at a site. Here’s an example:

    Click the Redundancy tab to view the redundancy scores for the APs. To view the redundancy score for an AP, hover your mouse over the AP. Color coding is used to indicate the redundancy score, with red indicating no redundancy (redundancy score =1). This data serves as a quick reference to analyze the impact of a switch failure.

Note:

The Access Points page displays a warning message for APs that operate in a reduced functionality mode.

Here is an example of the Access Points page that displays the warning message about an AP operating in the reduced functionality mode. You'll also see a warning icon displayed beside the AP. You can view the AP operating mode details such as the configured radio bands and the supported antenna chains in each band by hovering your mouse over the warning icon.

AP43 and AP45 support the reduced functionality mode, when specific configurations are applied. An AP45 requires the 802.3bt standard for a 4×4 antenna chain support in all the configured radio bands. However, if you enable an AP45 with the 802.3at standard, it operates with a fewer number of chains. The AP43 operates in the reduced functionality mode when USB peripherals are activated.