A newly commissioned QFX5220 reports "Optics HW error" alarms on multiple ports immediately after boot. The affected optics remain in the init_fail state, and "show interfaces diagnostics" optics reports 0 V module voltage.
This behavior indicates a hardware-level issue with optics power delivery rather than a software or transceiver compatibility issue.
During initial commissioning, multiple front-panel ports report optics hardware errors.
++ Command outputs from the switch:
user@QFX5220> show system alarms no-forwarding
0 alarms currently active
user@QFX5220> show system firmware
Part Type Tag Current Available Status
version version
RE 0 BIOS ROM 0 33.01 33.01 OK
RE 0 TMC FPGA 1 7.1.20 7.1.20 OK
RE 0 RE FPGA 2 0.1.6 0.1.6 OK
RE 0 SSD Primary 3 SBR12005 SBR12050 OK
RE 0 SSD Secondary 4 SBR12005 SBR12050 OK
RE 0 Power CPLD 5 1.32 1.32 OK
RE 0 Optics CPLD 6 0.1.8 0.1.8 OK
RE 0 Fan CPLD 7 0xA2 0.0 OK
RE 0 BCM TH3 Flash 8 2.5 2.10 OK
user@QFX5220> show chassis alarms
6 alarms currently active
Alarm time Class Description
2025-10-03 10:30:24 XXXX Minor port-0/0/0: Optics HW error
2025-10-03 10:30:24 XXXX Minor port-0/0/1: Optics HW error
2025-10-03 10:30:24 XXXX Minor port-0/0/2: Optics HW error
2025-10-03 10:30:24 XXXX Minor port-0/0/3: Optics HW error
2025-10-03 10:30:24 XXXX Minor port-0/0/4: Optics HW error
2025-10-03 10:30:24 XXXX Minor port-0/0/5: Optics HW error
user@QFX5220:pfe> show picd optics fpc_slot 0 pic_slot 0 port 0 cmd list
PICD optics list
Name State LOS_LOL_Status OtherAlarms StateMachine ErrCtr
xcvr-0/0/0 PRESENT RxLOS,TxLOS,RxLOL,TxLOL, PRESENT init_fail 0
xcvr-0/0/1 PRESENT RxLOS,TxLOS,RxLOL,TxLOL, PRESENT init_fail 0
xcvr-0/0/2 PRESENT RxLOS,TxLOS,RxLOL,TxLOL, PRESENT init_fail 0
xcvr-0/0/3 PRESENT RxLOS,TxLOS,RxLOL,TxLOL, PRESENT init_fail 0
xcvr-0/0/4 PRESENT RxLOS,TxLOS,RxLOL,TxLOL, PRESENT init_fail 0
xcvr-0/0/5 PRESENT RxLOS,TxLOS,RxLOL,TxLOL, PRESENT init_fail 0
xcvr-0/0/6 ABSENT
xcvr-0/0/7 ABSENT
user@QFX5220> show interfaces diagnostics optics et-0/0/1:0
Physical interface: et-0/0/1:0
Module temperature : 0 degrees C / 32 degrees F
Module voltage : 0 V
The optics are detected as present but are not receiving operating voltage from the system. As a result, the transceivers fail initialization and generate "Optics HW error" alarms.
Since the module voltage is reported as 0 V, this points to a hardware-related problem in the chassis power delivery path rather than a software issue.
Without additional power-related diagnostics, it is not possible to determine whether the failure originates from:
Power inputPower supply (PSU)Internal chassis power distribution
If this issue is encountered, collect the following information before rebooting or power cycling the device:
If optics on multiple ports simultaneously report 0 V module voltage and remain in the init_fail state,consider hardware replacement of the Chassis/PSU