Understanding Junos Fusion Data Center
Junos Fusion Data Center provides automated network configuration and enhanced scalability for medium to large data centers with the Juniper Networks QFX10002-36Q switches, QFX10002-72Q switches, QFX5100 switches, and EX4300 switches.
Figure 1 displays the typical topology of a Junos Fusion in a data center.
Figure 1 displays a multi-home Junos Fusion Data Center topology with two aggregation devices—Aggregation Device 1 and Aggregation Device 2.
Connections—Aggregation Device 1 is connected to Satellite Device 1 and Aggregation Device 2 is connected to Satellite Device 2. Satellite Device 1 and Satellite Device 2 are in turn connected to server through the extended ports. Satellite Devices 1 and 2 need to be connected to both aggression devices for redundancy. For the list of supported aggregation and satellite devices in a Junos Fusion Data Center, see Understanding Junos Fusion.
Port Usage—Both the aggregation devices are connected
using ICL ports with LAGs on both ends. ICL ports are used to forward
data traffic. You can choose to use a single link for ICL traffic.
Aggregation devices use cascade ports to connect to the satellite devices.
Satellite devices use uplink ports to connect to the aggregation devices and extended ports to connect to the servers.
To set up a Junos Fusion Data Center similar to the topology that is shown in Figure 1 using Network Director, perform the following tasks:
Create a configuration template. While creating the template, you need to:
Specify that this is a Junos Fusion for a multi-home data center fabric.
Identify the ICL and cascade ports on the aggregation device.
Specify the default satellite image for the satellite devices.
Upload the satellite image in the Network Directory image repository as a pre-requisite to create a template.
Apply the template to a Junos Fusion fabric. The device to which you apply the template should:
Support Junos Fusion. For the list of supported devices see, Juniper Networks Devices Supported by Junos Space Network Management Platform.
Have pre-configured with Multichassis Link Aggregation Groups (MC-LAGs) configuration (as MAC-LAG provides multihome support) and should be managed by Network Director.
Have the required DMI schema uploaded. For the list of supported DMI schema, see Uploading DMI Schemas
You can apply the template to a device that is already managed by Network Director or to a new unmanaged device, to make the device the aggregation device for the fusion fabric. When you apply the configuration template to one or more unmanaged devices, you specify the software image that is to be installed on the aggregation devices and the zero touch provisioning details for the aggregation devices. Whereas, when you apply the template to a managed (device that is already managed by Network Director) device, you select the device that you want to convert to an aggregation device in your fusion fabric and manually refresh the device topology. To refresh the topology, navigate to Topology View and click Refresh Topology under Tasks menu. Network Director converts the device to a fusion fabric aggregation device and deploys all the necessary configurations on the device. The devices that you want to convert to as aggregation devices should run the Junos software version that is supported by Junos Fusion. For the list of supported software version, see . In the above topology, you must discover both the Aggregation Device 1 and Aggregation Device 2 and manage them wit the MC-LAG configuration between these aggregation devices.
After the template is applied successfully, Network Director lists the fusion fabric in the Manage Fusion Fabric page. You can see the details and status of the fabric in the Manage Fusion Fabrics page. You can also edit the fusion fabric, download the cabling plan, and view the fabric connectivity from the Manage Fusion Fabrics page.