Interfaces charts showing "No Data to Display"

book

Article ID: 36563

calendar_today

Updated On:

Products

CA Infrastructure Management CA Infrastructure Management CA Performance Management - Usage and Administration DX NetOps

Issue/Introduction

Interface data is showing "No Data to Display" in the DX NetOps Performance Management (PM) Performance Center (PC) Portal User Interface (UI).

The Monitored Devices Inventory shows the Device. In it's Polled Metric Families tab the Interface Metric Family has Active Polled Interface items.

Why aren't the Active Polled Interfaces showing data?

The Interface Items, and the Polling Group to represent them, are missing in the devices Polling Configuration. This is observed by taking the following steps.

  1. Open a browser tab and go to the Data Aggregator (DA) host at the URL:
    1. http://DA_Host:8581/dcdebug
      1. Change DA_Host to the DA host name or IP address.
      2. Change to https and the correct port as needed if the DA is SSL enabled.
    2. Enter the IP Address for the device and set the correct IP Domain the devices is a member of
    3. Select the Polling Configuration radio button
    4. Select the View Data button
    5. Review it for an entry referring to the internal name for the Interface Metric Family, NormalizedPortInfo.
      1. If there is no reference to that, this is the problem, the Interfaces are not scheduled for polling.
      2. If there is a reference for that, are the affected interface items listed for polling?

Cause

Interface items are not added to the Data Collectors Polling Configuration. As a result they are not scheduled for polling cycles.

A true root cause for this is yet to be determined. In reported instances of the problem, by the time it's noticed it's too late to determine a cause.

A likely contributing factor is Collection changes where the Collections used have the affected Metric Family applied to the device.

Environment

All supported DX NetOps Performance Management releases

Resolution

There are some things we can try that normally resolve this by forcing a rebuild of the devices polling configuration.

In order of least impact to most impact try the following steps.

  1. Try an Update Metric Family for the Interface Metric Family
    1. Go to Administration->Monitored Items Management->Monitored Devices
    2. Find the problem device in the Inventory and select it.
    3. Go to it's Polled Metric Families tab
    4. Select the line for the Interface Metric Family.
    5. Select the Update Metric Family button
    6. Refresh until it shows Supported again and the update completes
    7. Refresh the Polling Configuration on the DCDebug page.
    8. If the Interfaces show up and data starts appearing, the issue is resolved.
    9. If the Interfaces do not show up, try the next option.
  2. Issue a Stop, and then Start Polling against the problem Device.
    1. Go to Administration->Monitored Items Management->Monitored Devices
    2. Find the problem device in the Inventory and select it.
    3. Note the Polled Item Count value.
    4. Select the Stop Polling button.
    5. Refresh the Details tab for the device until we see the Polled Items Count show 0 (zero).
    6. When the Polled Items Count reaches 0, select the Start Polling button.
    7. Refresh the Details tab for the device until we see the Polled Items Count shows a value that is equal to or greater than the original Polled Items Count.
    8. Refresh the Polling Configuration on the DCDebug page.
      1. If the Interfaces show up and data starts appearing, the issue is resolved.
      2. If the Interfaces do not show up, try the next option.
  3. Try a Rediscover from the Details tab
    1. Go to Administration->Monitored Items Management->Monitored Devices
    2. Find the problem device in the Inventory and select it.
    3. Select the Rediscover button.
    4. Go to the Polled Metric Families tab. Monitor it for all Metric Family entries to return from Discovering to Supported.
    5. Refresh the Polling Configuration on the DCDebug page.
      1. If the Interfaces show up and data starts appearing, the issue is resolved.
      2. If the Interfaces do not show up, try the next option.
  4. Try to rediscover the device using a Discovery Profile.
    1. Go to Administration->Monitored Items Management->Discovery Profiles
    2. Do one of the following: 
      1. Run an existing one that contains the target device IP address
      2. Create a new Discovery Profile and add the target device IP address when configuring it. Run it once created.
    3. Refresh the Discovery Profile list until the Discovery Profile shows it's completed running.
    4. Refresh the Polling Configuration on the DCDebug page.
      1. If the Interfaces show up and data starts appearing, the issue is resolved.
      2. If the Interfaces do not show up, try the next option.
  5. Restart the dcmd service for the Data Collector (DC) managing the device:
    1. If none of the above works, the next recommendation is to restart the dcmd service on the DC managing the affected device.
    2. After the restart refresh the Polling Configuration on the DCDebug page.
      1. If the Interfaces show up and data starts appearing, the issue is resolved.
      2. If the Interfaces do not show up, try the next option.
  6. Restart the DA dadaemon and the DC dcmd service for the DC managing the device:
    1. If none of the above works, the next recommendation is to restart both the DA dadaemon and the DC dcmd service on the DC managing the affected device.
    2. After the restarts refresh the Polling Configuration on the DCDebug page.
      1. If the Interfaces show up and data starts appearing, the issue is resolved.
      2. If the Interfaces do not show up, try the next option.

If none of the above works, the last remaining option may be to delete and rediscover the device. If this is not desired, open a new Support case for assistance with additional debug. It may reveal a different cause.

Additional Information

If none of the above works, the normal next step is enabling Detailed Poll Logging and Detailed SNMP Logging for the Interface Metric Family to determine what else may be wrong.

Additional information about how to enable and gather that logging can be found in the Knowledge Base Article Enable and download logging from DCDebug in Performance Management.