This article will explain whether we can use the same software image of QFX5110/QFX5100 or not to upgrade the whole VC at a time where QFX5110 & QFX5100 are part of same VC.
QFX5110 & QFX5100 is part of same VC.
QFX5100 and QFX5110 switches can be interconnected using Virtual Chassis ports (VCPs) to form a QFX5110 Virtual Chassis, which is considered to be a non-mixed Virtual Chassis because both types of switches can run the same software image, and you do not need to configure mixed mode.NOTE: A QFX5110 Virtual Chassis with QFX5100 switches can only be set up using QFX5110 and QFX5100 switches running the same Junos OS image that includes “-qfx-5e-” in the Junos OS software package filename downloaded from the Software Center. QFX5100 switches running a Junos OS image filename that includes “-qfx-5-” must first be upgraded to the “-qfx-5e-” image to join a QFX5110 Virtual Chassis.