When installing FPC type MPC2E-3D-NG-Q  with SCB-MX960, FPC can not be powered on due the the incompatibility issue with SCB-MX960

show chassis hardware models | match cb

CB 0 REV 09 710-021523 ABBH9526 SCB-MX960-S

CB 1 REV 09 710-021523 ABBH9836 SCB-MX960-S

We will see the below logs and FPC is kept offline and can not be powered on.

> show chassis fpc

Temp CPU Utilization (%) CPU Utilization (%) Memory Utilization (%)

Slot State (C) Total Interrupt 1min 5min 15min DRAM (MB) Heap Buffer

0 Online 28 11 0 11 11 11 1024 25 30

1 Empty

2 Empty

3 Online 27 15 0 14 14 14 1024 24 30

4 Offline ---FPC incompatible with SCB--- <<<<<<<<<

chassisd[13521]: JAM:PL: FPC 4 can not be powered on due to incompatibility with SCB 0

chassisd[13521]: CHASSISD_FRU_OFFLINE_NOTICE: Taking FPC 4 offline: FPC incompatible with SCB

chassisd[13521]: CHASSISD_SNMP_TRAP10: SNMP trap generated: Fru Offline (jnxFruContentsIndex 7, jnxFruL1Index 5, jnxFruL2Index 0, jnxFruL3Index 0, jnxFruName FPC: MPC2E NG HQoS @ 4/*/*, jnxFruType 3, jnxFruSlot 4, jnxFruOfflineReason 90, jnxFruLastPowerOff -373098474, jnxFruLastPowerOn -390688477)

chassisd[13521]: CHASSISD_SNMP_TRAP3: ENTITY trap generated: entStateOperDisabled (entPhysicalIndex 12, entStateAdmin 2, entStateAlarm 6)

FPC type MPC2E-3D-NG-Q is not compatible with SCB type SCB-MX960. Below is the link to check the hardware compatibility for MPC2E-3D-NG-Q

https://apps.juniper.net/hct/model/?component=MPC2E-3D-NG

NOTE: MPC2E-3D-NG is not compatible with SCB, you must use either SCBE-MX or SCBE2-MX for the switch fabric interface.