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Activating Maintenance Mode on Data Center Devices

 

Starting with Contrail Networking Release 1909, you can activate maintenance mode on spine and leaf devices in a data center fabric. In maintenance mode, traffic flowing through the device is drained out or rerouted to other devices so that you can perform maintenance activity on the device like replace line cards or fix any issue on the device.

Prior to Contrail Networking Release 1909, devices were placed in maintenance mode only when performing hitless software upgrade.

Activating Maintenance Mode

To activate maintenance mode on a data center device in a fabric.

  1. Navigate to the Infrastructure > Fabrics page in Contrail Command. A list of fabrics is displayed in the Fabrics tab.
  2. Click the Fabrics tab and select a data center fabric. The list of devices connected in a spine and leaf topology and corresponding details of each device in the selected fabric is displayed. The roles assigned to the devices are also displayed.
  3. Click ... on the right side of a fabric device.
  4. Click Activate Maintenance Mode. A page requesting confirmation to activate maintenance mode is displayed.
  5. Click Confirm to confirm activation of maintenance mode on the device.

    Alternatively, click Cancel to cancel activating the maintenance mode.

  6. Select the health check parameters for the device in the Parameters tab.

    The health check parameters confirm that the device and the network as a whole are stable to activate maintenance mode. By default, if health check fails for a particular device, then maintenance mode is not activated. You can deselect the Abort on health check failure check box to continue activation on the device even if the health check fails.

  7. Click Next. The Testing page appears.

    The Testing page validates and displays the result of the health check on the device for the parameters selected previously in the Parameters tab. If health check fails for the selected parameters, then you can go back to the previous page by clicking Previous and either change the value of the health check parameter or disable the parameter altogether. You can perform this step multiple times until health check passes for the device or you are able to determine that performing maintenance on the device is feasible.

    Alternatively, you can click Previous and deselect the Abort on health check failure check box in the Parameters tab to continue maintenance mode activation on the device even if health check fails.

  8. Click Next. The Activating page appears and the device is placed in maintenance mode.
  9. Click Finish to exit the wizard. The Fabrics page appears and status of the device is listed as under Maintenance Mode.

Deactivating Maintenance Mode

Once maintenance activity on a data center device is completed, you can deactivate maintenance mode on the device and bring it back online. To deactivate maintenance mode on a data center device.

  1. Navigate to the Infrastructure > Fabrics page in Contrail Command. A list of fabrics is displayed in the Fabrics tab.
  2. Select a data center fabric. The list of devices in the selected fabric is displayed. The roles assigned to the devices are also displayed.
  3. Click the ... on the right side of a fabric device which is under maintenance mode.
  4. Click Deactivate Maintenance Mode. A page requesting confirmation to deactivate maintenance mode is displayed.
  5. Click Confirm to confirm deactivation of maintenance mode on the device.

    Alternatively, click Cancel to cancel deactivating the maintenance mode.

  6. Select the health check parameters for the device in the Parameters tab.

    By default, if health check fails for a particular device, then maintenance mode is not deactivated. You can deselect the Abort on health check failure check box to continue deactivation on the device even if the health check fails.

  7. Click Next. The Deactivating page appears.

    The device is taken out of maintenance mode and this page validates and displays the result of the health check on the devices for the parameters selected previously in the Parameters tab.

  8. Click Finish to exit the wizard. The Fabrics page appears displaying the status of the device as Active.
Release History Table
Release
Description
Starting with Contrail Networking Release 1909, you can activate maintenance mode on spine and leaf devices in a data center fabric.