Juniper Networks EX4100s will not bring a link up when using SFP-Ts on ports ge-0/1/0 to port ge-0/1/3.
mist@switch> show chassis pic fpc-slot 0 pic-slot 1FPC slot 0, PIC slot 1 information:Type 4x1G/10G SFP/SFP+State Online PIC version 1.10Uptime 28 days, 2 hours, 11 minutes, 50 seconds
PIC port information: Fiber Xcvr vendor Wave- Xcvr JNPR MSA Port Cable type type Xcvr vendor part number length Firmware Rev Version 0 GIGE 1000T n/a ACME CORP. ABCD1234E2FGH-I3 n/a 0.0 REV 02 SFF-8472 ver n/a
{master:0}mist@switch> show interfaces ge-0/1/0 terseInterface Admin Link Proto Local Remotege-0/1/0 up downge-0/1/0.0 up down eth-switch
{master:0}mist@switch> show chassis hardwareHardware inventory:Item Version Part number Serial number DescriptionChassis AB1234CD567 EX4100-F-24PPseudo CB 0 Routing Engine 0 BUILTIN BUILTIN RE-EX4100-F-24PFPC 0 REV 10 650-134062 AB1234CD567 EX4100-F-24P CPU BUILTIN BUILTIN FPC CPU PIC 0 REV 10 BUILTIN BUILTIN 24x10M/100M/1G Base-T PIC 1 REV 10 650-134062 AB1234CD567 4x1G/10G SFP/SFP+ Xcvr 0 REV 02 740-013111 A1B2C3 SFP-T PIC 2 REV 10 650-134062 AB1234CD567 4x1G/10G SFP/SFP+Power Supply 0 BUILTIN BUILTIN JPSU-450W-AC-AFOFan Tray 0 Fan Module, Airflow Out (AFO)Fan Tray 1 Fan Module, Airflow Out (AFO)
This is expected behavior, Ports 0-3 on PIC 1 do not support 1G SFP-T and 100m optics as documented here: https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-switches/topics/topic-map/switches-interface-port.html#channel-ex4100
https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-switches/topics/topic-map/switches-interface-port.html