Hello!
Is there something like interface lt-0/0/0 on j-series, ex, or srx branch devices to interconnect two routing-instances. As you don't have logical-systems on these devices.
I see lt on j-series, but it has other purpose.
lt:
Interface used to provide class-of-service (CoS) support for real-time performance monitoring (RPM) probe packets.
Within a J Series device, packets are routed to this internal interface for services. The lt interface is an internal interface only and is not associated with a physical medium or PIM. You must configure the interface for it to perform CoS for RPM services.
Note: The lt interface on the M Series and T Series routing platforms supports configuration of logical devices—the capability to partition a single physical device into multiple logical devices that perform independent routing tasks. However, the lt interface on the J Series device does not support logical devices.
Regards