This article provides documentation relevant to what are the MPLS L2 circuit scale values on QFX Series Juniper Network switches.
The customer is using redundant MPLS L2 Circuits on a QFX Series platform such as QFX5120-48Y and needs to know the scale values for this platform.
Based on following documented numbers, that QFX should be capable to handle those MPLS circuits: https://www.juniper.net/documentation/en_US/junos/topics/reference/general/mpls-scaling-values-qfx-series.html.
https://www.juniper.net/documentation/en_US/junos/topics/reference/general/mpls-scaling-values-qfx-series.html