About Application Telemetry
Application telemetry allows you to configure global network settings on devices for monitoring and assessing their health.
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Application telemetry allows you to configure global network settings on devices for monitoring and assessing their health.
With Cisco DNA Center, you can configure global network settings when devices are assigned to a specific site. Telemetry polls network devices and collects telemetry data according to the settings in the SNMP server, the syslog server, the NetFlow Collector, or the wired client.
Create a site and assign a device to the site. See Create a Site in a Network Hierarchy.
Step 1 |
In the Cisco DNA Center GUI, click the Menu icon () and choose Design > Network Settings > Telemetry. |
Step 2 |
Expand the SNMP Traps area if it is not visible and do one of the following: |
Step 3 |
Expand the Syslogs area if it is not visible and do one of the following:
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Step 4 |
Expand the NetFlow area if it is not visible and do one of the following: |
Step 5 |
Expand the Wired Client Data Collection area and check the Monitor wired clients check box. This selection turns on IP Device Tracking (IPDT) on the access devices of the site. By default, IPDT is disabled for the site. |
Step 6 |
Expand the Wireless Controller, Access Point and Wireless Clients Health area and check the Enable Wireless Telemetry check box. When selected, you can monitor the health of your network's wireless controller, access points, and wireless clients. |
Step 7 |
Click Save. |
Cisco DNA Center automatically enables application telemetry on all applicable interfaces or WLANs that are selected based on the new automatic interfaces or WLAN selection algorithm.
Application telemetry is pushed to WLANs that are provisioned through Cisco DNA Center.
Note |
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The following table provides the criteria for selecting interfaces and WLANs based on the conventional tagging-based algorithm (with lan keyword) and the new automatic selection algorithm for all the supported platforms:
Platform | Conventional Tagging-Based Algorithm | Automatic Selection Algorithm | ||
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Router |
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Switch |
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Cisco AireOS Controller |
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Cisco Catalyst 9800 Series Wireless Controller with Optimized Application Performance Monitoring (APM) profile and IOS release 16.12.1 and later. |
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Cisco DNA Traffic Telemetry Appliance with Optimized APM profile and IOS release 17.3 and later. |
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Configure global telemetry settings as described in Configure Syslog, SNMP Traps, NetFlow Collector Servers, and Wired Client Data Collection Using Telemetry.
Step 1 |
In the Cisco DNA Center GUI, click the Menu icon () and choose Provision > Inventory. The Inventory page displays the device information gathered during the Discovery process. To view devices available in a particular site, expand the Global site in the left pane, and select the site, building, or floor. |
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Step 2 |
Choose the devices that you want to provision. |
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Step 3 |
From the Actions drop-down list, choose Telemetry and do one of the following:
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Step 4 |
Click Apply. The Application Telemetry column shows the telemetry configuration status. If you don’t see the Application Telemetry column in the default column setting, click the More icon () at the right end of the column headings and check the Application Telemetry check box. |
If you are using the Cisco DNA Center application telemetry to monitor device data, and you need to change the Cisco DNA Center cluster virtual IP address (VIP), complete the following steps to change the VIP and to ensure that node telemetry data is sent to the new VIP.
Determine the version of Cisco DNA Center that you are using. You can check this by logging in to the Cisco DNA Center GUI and using the About option to view the Cisco DNA Center version number.
Obtain SSH client software.
Identify the VIP address that was configured for the 10-GB interface facing the enterprise network on the Cisco DNA Center primary node. Log in to the appliance using this address, on port 2222. To identify this port, see the rear-panel figure in the "Front and Rear Panels" section in the Cisco DNA Center Installation Guide.
Obtain the Linux username (maglev) and password configured on the primary node.
Identify the cluster VIP that you want to assign. The cluster VIP must conform to the requirements explained in the "Required IP Addresses and Subnets" section in the Cisco DNA Center Installation Guide.
Step 1 |
Access the Cisco DNA Center GUI and Disable Application Telemetry at all the sites, as follows: |
Step 2 |
Use the appliance Configuration wizard to change the cluster VIP, as follows: |
Step 3 |
Restart the necessary Cisco DNA Center services by entering the following series of commands at the SSH prompt:
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Step 4 |
Wait for all the services to restart. You can monitor the progress of the restarts by entering the following command, substituting service names as needed for the release train appropriate for your Cisco DNA Center version.
When all the necessary services are running, you see command output similar to the following, with a Running status for each service that has restarted successfully:
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Step 5 |
Access the Cisco DNA Center GUI and Enable Application Telemetry to all nodes as follows:
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You can push the configuration changes to a device irrespective of whether the device controllability is enabled or disabled.
Step 1 |
In the Cisco DNA Center GUI, click the Menu icon () and choose . The Inventory page displays the device information gathered during the Discovery process. To view devices available in a particular site, expand the Global site in the left pane, and select the site, building, or floor. |
Step 2 |
Choose the devices that you want to update the configuration changes. |
Step 3 |
From the Actions drop-down list, choose . |
Step 4 |
In the Update Telemetry Settings window, do the following:
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Step 5 |
Click Apply. |