SFP on ex2300-48mp PIC 1 appears to flap or removed resulting in the link going down.

> Recurring connectivity issues with the use of SFP modules, both copper and fiber, which appear to be flapping and going down. 

> Reinserting the modules temporarily resolves the issue, but the fault can reoccur. 

> This problem is exclusive to the SFP modules and does not affect the regular inbuilt interfaces, whether used standalone or aggregated. 

> There were issues with CMIC SPI bus transfers, where Lock/Unlock operations weren't available and concurrent access could lead to lockups triggering watchdog timeouts and resets.

> The fix involves preventing concurrent access to the CMIC SPI bus by implementing Lock/Unlock mechanisms during transactions ensuring that only one process can access the bus at a time, preventing conflicts and potential system failures.

Resolved-In:

junos:21.4R3-S7 junos:22.2R3-S4 junos:22.3R3-S3 junos:22.3X60 junos:22.3X60-J3 junos:22.4R3-S2 junos:23.2R2-S1 junos:23.2R2-S3 junos:23.4R1-S2 junos:23.4R2 junos:24.2R1