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request virtual-chassis mode

Syntax

Release Information

Command introduced in Junos OS Release 11.1 for EX Series switches.

Command introduced in Junos OS Release 13.2X51-D20 for QFX Series devices.

The fabric keyword introduced in Junos OS Release 13.2X51-D20 for EX Series switches and QFX Series devices in a Virtual Chassis Fabric (VCF).

Command introduced in Junos OS Release 13.2X51-D20 for VCF.

Description

Configure the mode for a device or multiple devices in a Virtual Chassis or a VCF.

A device must be configured in fabric mode to participate as a member device in a VCF.

A device must be configured in mixed mode when it is participating in a Virtual Chassis or a VCF with different types of devices.

Do not enable the request virtual-chassis mode mixed command for a standalone device or for a member switch that is intended to remain in a non-mixed Virtual Chassis or VCF. Enabling this command reduces the maximum scaling numbers for some features on the switch, Virtual Chassis, or VCF.

You do not need to configure mixed mode if the only devices in your Virtual Chassis are EX4500 and EX4550 switches.

To avoid potential traffic disruptions and configuration issues for a mixed Virtual Chassis, we recommend configuring mixed mode on your device before cabling it into your Virtual Chassis. We recommend rebooting your device to complete this configuration procedure before interconnecting your device into the Virtual Chassis.

To avoid potential traffic disruptions and configuration issues, we recommend configuring the fabric and, if applicable, the mixed mode settings on your device before cabling it into a VCF. We recommend rebooting your device to complete this configuration procedure before interconnecting your device into the VCF. You can change the fabric and mixed mode settings after the device has been added to a Virtual Chassis or VCF, however.

If you set some of the devices in a mixed Virtual Chassis or VCF to mixed mode using this command but not others, the mixed Virtual Chassis or VCF might not form. If you experience this issue, enter the request virtual-chassis mode mixed all-members command to set the Virtual Chassis mode to mixed for all devices in the Virtual Chassis or VCF. You then need to reboot the devices that have been set into mixed mode to complete the procedure. The Virtual Chassis or VCF forms after the devices have rebooted.

When you do not use this command to set any of the switches in a mixed EX4200 and EX4500 Virtual Chassis to mixed mode, a mixed EX4200 and EX4500 Virtual Chassis forms with one of the switches assuming the master role if the switches are running Junos OS Release 11.4 or later. All other switches in the mixed EX4200 and EX4500 Virtual Chassis are placed into the linecard role. If you experience this behavior, enter the request virtual-chassis mode mixed all-members command to set the Virtual Chassis mode to mixed for all switches in the Virtual Chassis. You will then need to reboot the switches to complete the procedure. The Virtual Chassis will form after all of the switches have rebooted.

The Virtual Chassis mode setting is maintained through reboots even though it is set in operational mode.

Options

mixed

—

Set the device into mixed mode so that the device can participate in a mixed Virtual Chassis or mixed VCF. Note: You do not need to set mixed mode if the only devices in your Virtual Chassis are QFX3500 and QFX3600 devices. You do not need to configure mixed mode if the only devices in your Virtual Chassis are EX4500 and EX4550 switches.

Required Privilege Level

system-control

List of Sample Output

Sample Output

Sample Output