Juniper QFX5110 Series - Page 398

CAUTION: QFX5100 switches running a Junos OS image that includes “-qfx-5-” in
the software package filename must be upgraded to a package filename that includes
“-qfx-5e-” before being added to a QFX5110 Virtual Chassis or VCF. See Upgrading
a QFX5100 Switch with a USB Device to Join a QFX5110 Virtual Chassis or Virtual
Chassis Fabric.
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If automatic software download is enabled, disable this feature by entering the delete chassis
auto-image-upgrade statement.
To preprovision a VCF:
1. Make a list of the serial numbers of all the devices to be connected in the VCF. You can get a device’s
serial number in the show virtual-chassis output or by following the instructions in “Locating the Serial
Number on a QFX5110 Device or Component” on page 586, “Locating the Serial Number on a QFX5100
Device or Component” on page 590, “Locating the Serial Number on a QFX3600 or QFX3600-I Device
or Component” on page 593, “Locating the Serial Number on a QFX3500 Device or Component” on
page 596, or “Locating the Serial Number on an EX4300 Switch or Component” on page 598.
NOTE: Serial number values are case-sensitive.
2. Decide the desired role (routing-engine or line-card) for each device.
In a VCF, you configure two supported devices acting in the Routing Engine role into spine devices. All
other devices—the spine devices not assuming the primary or backup Routing Engine role and all leaf
devices—are configured into the linecard role as leaf devices.
3. Set each device individually into fabric mode. If needed, also set the devices into mixed mode for a
mixed VCF, and at the same time, request the device to reboot as part of the procedure to complete
this step.
If you are configuring a non-mixed VCF:
user@device> request virtual-chassis mode fabric local reboot
If you are configuring a mixed VCF:
user@device> request virtual-chassis mode fabric mixed local reboot
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