This article explains the scenario where in the 4G LTP Interface (cl- and dl-) stays down when the SIM is placed on Slot2 of the mPIM Module.
The mPIM Module shows Online correctly:
root@SRX> show chassis fpc pic-status
Slot 0 Online FPC
PIC 0 Online 6xGE,2xGE SFP Base PIC Slot 2 Online FPC <<<< PIC 0 Online LTE for AA mPIM The cl- interfaces shows Down Down: root@SRX> show interfaces terse | match cl-* cl-2/0/0 down down cl-2/0/0.0 up down The dl- Interface shows Up Up as its Logical and has the LinkLocal IPv6 address: dl0 up up dl0.0 up up inet inet6 fe80::427f:5f0f:fcdf:dee2/64
By default, if the LTE Mini-PIM installed in slot 1 (fpc1), the dialer interface is triggered to dial automatically when the FW starts or boots UP.
This functionality is applicable only if the Mini-PIM is installed in slot 1.
In this case, the mPIM is installed on Slo2 of the Chassis:
PIC 0 Online 6xGE,2xGE SFP Base PIC Slot 2 Online FPC <<<< PIC 0 Online LTE for AA mPIM Hence, we need to manually configure the cl-slot-number/0/0 interface to be associated with the dialer interface. set interfaces cl-slot-number/0/0 act-sim sim-slot-number More Read : LTE Mini-Physical Interface Module After the config, both the cl- and dl- interfaces able to dial in to the carrier Network: cl-2/0/0 up up cl-2/0/0.0 up up dl0 up up dl0.0 up up inet 10.212.149.49/30 <<< inet6 2001:8004:1180:2bd4:d281:c5ff:fe61:d1e5/64 <<< fe80::427f:5f0f:fcdf:dee2/64