1. Install the individual switches in a rack or cabinet following the guidelines in “Planning
a Virtual Chassis Fabric Deployment” on page 51.
BEST PRACTICE: Install spine devices at the top of the rack or cabinet in
order of master routing engine (RE), backup RE, and then other leaf
devices.
2. Make a list of all of the serial numbers of the devices.
3. Log into each device and configure into fabric mode and mixed mode, if needed. Mixed
mode is only necessary for QFX5100 VCF when QFX5100-96S, QFX5100-48T,
QFX3500, QFX3600, or EX4300 devices are present as leaf devices in the
configuration. If a spine device is not properly configured in fabric and mixed mode
for QFX5100 mixed VCF, the VCF devices reboot to commit the mixed mode or fabric
settings. When fabric and mixed mode are not set, you might need to manually correct
any issues that are related to the VCF not forming correctly because the device did
not immediately join the VCF.
WARNING: Only configure operational-level commands. If you commit
any configuration-level commands (including assigning IP address), the
Virtual Chassis Fabric cannot form and the switch must be zeroed.
4. Configure the VCF into mixed mode if it is a QFX5100 VCF and the switch models span
different lines of switches.
5. Configure each device for one of the provisioning modes: autoprovision, preprovision,
or nonprovision. See:
•
Autoprovisioning a Virtual Chassis Fabric
•
Preprovisioning a Virtual Chassis Fabric
•
Configuring a Nonprovisioned Virtual Chassis Fabric
6. Connect and configure one of the management ports (C0) or (C1) to a management
switch as the Virtual Management Ethernet interface. Using this interface, you can
configure and manage the devices in the VCF. See “Connecting a Device to a Network
for Out-of-Band Management” on page 93.
7. Commit your changes.
8. Cable the ports that you will use as VCPs. For cabling examples, see “Connecting a
QFX5110 Device in a QFX5110 Virtual Chassis Fabric” on page 96, Connecting a QFX5100
Device in a Virtual Chassis Fabric, Connecting a QFX3500 or QFX3600 Switch in a Virtual
Chassis Fabric, and Connecting EX Series Switches in a Virtual Chassis Fabric.
81Copyright © 2017, Juniper Networks, Inc.
Chapter 9: Unpacking and Mounting the Switch
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