How To View Port Status And Optical Module Information On Juniper Switches

Reading internal transceiver data helps monitor link status, optical power, temperature and coding compatibility between modules and switches. We use Moduletek SFP-10G-LR transceiver on Juniper EX4550 switch to show detailed query steps.

Schematic diagram of optical module accessing the switch

Figure 1 Schematic of Transceiver Connected to Switch

1. Transceiver Link Status

Run command

show interface <interface-type> <interface-number>

It displays port information, including interface speed, physical link status (Physical link Up means normal transceiver connection) and traffic statistics for fault troubleshooting.

Note: <interface-type> <interface-number> refers to port type and number. You can run show interface to check port types. Leaving parameters blank will show all port information.

2. Transceiver Hardware Identification

Run command

show chassis hardware

It shows overall device hardware details, including module type and serial number under PIC slots.

Run command

show chassis pic fpc-slot number pic-slot <number>

It displays slot status, transceiver type, manufacturer, part number and working wavelength.

Note: The slot <number> can be obtained from the chassis hardware query result.

3. Transceiver DDM Diagnostic Data

Run command

show interfaces diagnostics optics

It shows real-time DDM values and alarm thresholds. Check TX/RX power, temperature and bias current to verify working status of transceivers on both ends.

Moduletek supplies various transceivers fully compatible with Juniper switches. Welcome to inquire and purchase.

Moduletek Limited is at your service.

For further inquiries about the above content, please contact us at: sales@moduletek.com

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How To View Port Status And Optical Module Information On Juniper Switches