CHAPTER 21
Before You Begin
IN THIS CHAPTER
Virtual Chassis Fabric Installation Overview | 260
Virtual Chassis Fabric Installation Overview
For best results, ensure you review and understand the Virtual Chassis Fabric (VCF) configuration options.
These configuration options are explained in “Virtual Chassis Fabric Hardware Overview” on page 8 and
“Understanding Virtual Chassis Fabric Configuration” on page 4. Do not interconnect the switches with
cables until directed in the procedure.
1. Install the individual switches in a rack or cabinet following the guidelines in “Plan a Virtual Chassis
Fabric Deployment” on page 87.
BEST PRACTICE: Install spine devices at the top of the rack or cabinet in order of primary
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.
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