Execute the command "show chassis pic fpc-slot number pic-slot number " to view the specific board/slot and optical module information, including PIC slot type and status, optical module type, vendor name, vendor model number, wavelength and so on. Display diagnostics data and alarms for Gigabit Ethernet optical transceivers (SFP, SFP+, XFP, QSFP+, or CFP) installed in EX Series Switches or QFX Series Switches. Thresholds that trigger a high. I have connected two Juniper routers with a QSFP28 optics and I need to find out the length of the optical cable I have used. Is there a command to check that in the router? No, you can find out with optical test equipment such as an OTDR, but not with the less-sophisticated telemetry available in. Optical modules work on the switch usually need to read the internal information of the module to understand its working status, such as module connectivity and real-time collection of light, temperature, etc. Verifying module identification also helps confirm coding compatibility between the module and. During times, Juniper OS has offered different command versions to display transceiver information – legacy Juniper show SFP type, to nowadays versions show interfaces diagnostics. Their most popular Operating Software (OS) is named Junos OS, with the latest version today, 22.