On QFX EVO platform, 10G link up failure could be seen with certain releases as a software bug.
This KB describes the details and suggest upgrade the software version if applicable.
On QFX5130-32CD, QFX5220-32CD and QFX5220-128C, 10G optics may not come up properly. Even after rebooting the device, link up failure won't be solved.
This issue could be seen with 21.3R2-EVO and later versions.
Here is the output example when having a loopback connection between port 32 and port 33 on the same device.
root@QFX-EVO# run show chassis hardware Hardware inventory: Item Version Part number Serial number Description Chassis AA0000000001 QFX5130-32CD PSM 1 REV 05 740-085431 1A000000001 JPSU-1600W-AC-AFO Routing Engine 0 BUILTIN BUILTIN RE-QFX5130-32CD CB 0 REV 06 650-109783 CB0000000001 QFX5130-32CD FPC 0 BUILTIN BUILTIN QFX5130-32CD PIC 0 BUILTIN BUILTIN 32X400G-QSFP-DD Xcvr 32 REV 01 740-031981 E000000032 SFP+-10G-LR Xcvr 33 REV 01 740-031981 E000000033 SFP+-10G-LR
When using prior version of 21.3R2-EVO, 10G link will be come up as expected.
root@QFX-EVO# run show interfaces terse | match 0/0/3 et-0/0/32 up up et-0/0/32.0 up up inet 192.168.1.32/24 et-0/0/33 up up et-0/0/33.0 up up inet 192.168.1.33/24
But if you use 21.3R2-EVO and later version, ports do not come up.
root@QFX-EVO> show interfaces terse | match et-0/0/3 et-0/0/32 up down et-0/0/32.0 up down inet 192.168.1.32/24 et-0/0/33 up down et-0/0/33.0 up down inet 192.168.1.33/24
There is no problem on TX and RX optical power.
root@QFX-EVO# run show interfaces diagnostics optics et-0/0/32 Physical interface: et-0/0/32 ~snip~ Lane 0 Laser bias current : 35.203 mA Laser output power : 0.6 mW / -2.21 dBm Laser temperature : 34 degrees C / 93 degrees F Laser receiver power : 0.98 mW / -0.08 dBm Laser bias current high alarm : Off Laser bias current low alarm : Off Laser bias current high warning : Off Laser bias current low warning : Off Laser temperature high alarm : Off Laser temperature low alarm : Off Laser temperature high warning : Off Laser temperature low warning : Off Laser receiver power high alarm : Off Laser receiver power low alarm : Off Laser receiver power high warning : Off Laser receiver power low warning : Off Laser output power high alarm : Off Laser output power low alarm : Off Laser output power high warning : Off Laser output power low warning : Off Tx loss of signal functionality alarm : Off Rx loss of signal alarm : Off Tx laser disabled alarm : Off [edit] root@QFX-EVO# run show interfaces diagnostics optics et-0/0/33 Physical interface: et-0/0/33 ~snip~ Lane 0 Laser bias current : 38.627 mA Laser output power : 0.701 mW / -1.53 dBm Laser temperature : 33 degrees C / 91 degrees F Laser receiver power : 0.978 mW / -0.09 dBm Laser bias current high alarm : Off Laser bias current low alarm : Off Laser bias current high warning : Off Laser bias current low warning : Off Laser temperature high alarm : Off Laser temperature low alarm : Off Laser temperature high warning : Off Laser temperature low warning : Off Laser receiver power high alarm : Off Laser receiver power low alarm : Off Laser receiver power high warning : Off Laser receiver power low warning : Off Laser output power high alarm : Off Laser output power low alarm : Off Laser output power high warning : Off Laser output power low warning : Off Tx loss of signal functionality alarm : Off Rx loss of signal alarm : Off Tx laser disabled alarm : Off
There is a failure on multiplexing equalizer setting which leads the link up failure.The issue has been fixed in 21.4R3-S4-EVO, 22.4R2-EVO and later releases through PR1725300 below.https://prsearch.juniper.net/problemreport/PR1725300