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Understanding Cloud Analytics Engine and Network Director


Cloud Analytics Engine from Juniper Networks provides network data analysis to enable you to improve application performance and availability. It provides data collection, analysis, correlation, and visualization, helping you to better understand the behavior of workloads and applications across the physical and virtual infrastructure. Cloud Analytics Engine provides an aggregated and detailed level of visibility, tying applications and the network together, and an application-centric view of network status, improving your ability to quickly roll out new applications and troubleshoot problems.

Cloud Analytics Engine provides these major capabilities:

  • Application visibility and performance management, by analyzing application flows and workload placement.

  • Capacity planning and optimization, by detecting hotspots and monitoring latency and microbursts.

  • Troubleshooting and root cause analysis, by correlating overlay networks.


    Cloud Analytics Engine does not support underlay networks.

Network Director uses Cloud Analytics Engine to support the following features:

  • High-frequency statistics gathering and reporting—Network Director uses high-frequency statistics to report on device and port latency and congestion events through the Device and Port Latency Heatmap dashboard widget and the View Congestion Events task in Monitoring mode.

  • Flow analysis—Network Director provides information about application flows in your data center, such as the path the flow takes through the network, the latency experienced at each hop, and traffic statistics for each network device in the path. The Virtual Machines & Bare Metal Servers dashboard widget and the Recent Flow Analysis dashboard widget are the primary interfaces for this feature.

To use these features, you must:

  • Install the following Cloud Analytics Engine components in your network:

    • QFX5100 switches running a Junos OS release that supports Cloud Analytics Engine.

    • One or more compute nodes with a Compute Agents (CA) installed. Compute Agent works with the Junos OS component of Cloud Analytics Engine to configure cloud analytics data collection on network devices and collect the requested data.

    • One or more Data Learning Engines (DLEs) installed. The DLE provides the API for integration with Network Director.

    For more information about these components and installing them, see the Cloud Analytics Engine documentation included in the QFX Series documentation.

  • Provide Network Director with the IP address of the DLE or DLEs under Preferences > Monitoring> Data Learning Engine Settings.

In addition:

  • For high-frequency statistics, you must enable the collection of the statistics on specific devices or ports, using the Configuration Deployment > Enable High Frequency Stats task in Deploy mode.

  • For flow analysis, you must enable LLDP on the bare metal servers, on the servers hosting the virtual machines, and on the connecting switches. In addition, the switches must be discovered by using the SNMP option in Network Director.