Analyzing QFabric Devices

This topic describes how to analyze QFabric devices. The Run Fabric Analyzer task analyzes a QFabric device and provides information about its health, connectivity, and topology.

Note: Fabric analysis is supported for QFabric devices running Junos Release 13.1R2 and higher.

You must run the Setup QFabric task on the QFabric device to get information about the control plane’s health and topology. See Setting Up QFabrics for information.

Procedure for Analyzing a QFabric Device

1. Click Monitor in the Network Director banner.
2. Select the QFabric device to analyze in the View pane.
3. In the Tasks pane, select Tasks > Run Fabric Analyzer.

The results of the analysis appear on the Fabric Analysis tab in Monitor mode, when the QFabric device is selected in the View pane. For information about using the tabs within this tab, see the following sections:

• Using the Fabric Health Check Tab
• Using the Fabric Connectivity Check Tab
• Using the Control Plane Topology Tab
• Using the Data Plane Topology Tab

Using the Fabric Health Check Tab

To check the health of a QFabric device, select the Fabric Health Check tab on the Fabric Analysis tab in Monitor mode. The Fabric Health Check tab contains these sections:

• The Control Plane Health Check section shows information about the health of the QFabric device’s control plane. It displays a summary of the control plane health checks performed on the QFabric device. For each summary category, the number of failed (in red) and passed (in green) tests is shown.

  To see detailed information about the tests, click the Details button. The Control Plane Health Check Detailed View window opens. This window shows the detailed tests that were performed and their pass/fail status.

• The Data Plane Health Check section shows information about the health of the QFabric device’s data plane in a table. Each node device is listed in the Node Device column, and the checks are listed in the other columns.

Using the Fabric Connectivity Check Tab

To check the connectivity of a QFabric device, select the Connectivity Check tab on the Fabric Analysis tab in Monitor mode. This tab shows the status of connections between data plane components—Interconnect devices and Node devices. Select which connections to view from the Show connectivity between list.

The connectivity check results are shown in a graphical format by default. The connectivity status of each device is color-coded:

• Green—Connected. The software is using all possible physical paths between the two node devices. This is the ideal condition and ensures the best performance given the physical connectivity of the system.
• Red—Not Connected. The software is not using any path between the two node devices, so traffic cannot flow between them.
• Orange—Partially connected. The software is not using all possible physical paths between the two node devices. This might indicate a software error. Traffic should flow smoothly between the two node devices unless so much traffic is sent between the two node devices that all possible paths must be used to prevent packet drops.

You can mouse over a colored square to see the device’s name. To see this information in a table, click the table button in the top right portion of the results area.

Using the Control Plane Topology Tab

To see a diagram of the QFabric device’s control plane topology, select the Control Plane Topology tab on the Fabric Analysis tab in Monitor mode. The link lines are color-coded to indicate the link type. To see the legend for the line color codes, mouse over the button at the top right of the tab. You can zoom in and zoom out of the diagram by using the provided buttons.

Using the Data Plane Topology Tab

To see a diagram of the QFabric device’s data plane topology, select the Data Plane Topology tab on the Fabric Analysis tab in Monitor mode. You can zoom in and zoom out of the diagram by using the provided buttons.