Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?




Hierarchy Level


Enable the auto-provisioned configuration mode for a Virtual Chassis Fabric (VCF).

When a VCF is autoprovisioned, you can plug and play leaf devices into your VCF. You do not need to manually configure the required VCF parameters. When you interconnect a leaf device into the VCF, the leaf device is automatically configured into the linecard role. All other required VCF settings also happen without further user action, such as configuring the member ID, setting fabric mode or mixed mode, and setting up the Virtual Chassis ports (VCPs).

For autoprovisioning to work:

  • The leaf device must be zeroized or no VCF parameters have been previously set or configured on the device.

  • You must interconnect the leaf device to a spine device using a 10-Gbps SFP+ or 40-Gbps QSFP+ link that is supported as a VCP and is not already converted into a VCP on both sides of the link. See Automatic Virtual Chassis Port (VCP) Conversion for details.

If the VCF automatically sets fabric or mixed mode on a spine or leaf device during autoprovisioning, the VCF then automatically reboots the device to complete the configuration. The device must reboot to apply the mode settings and properly join the VCF. If you want to more deterministically control when a device reboots upon adding it to an autoprovisioned VCF, you can alternatively configure fabric or mixed mode settings manually and reboot the device yourself before interconnecting it into the VCF.

Required Privilege Level

system—To view this statement in the configuration.system-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 13.2X51-D20.