Where to connect the optical module of the core switch

Plug the optical transceiver (SFP/SFP+) into the designated fiber port on the core switch, ensuring compatibility with the switch and fiber type.Steps to Connect the Optical Module1. Identify the Correct Port: Locate the SFP or SFP+ ports on your core switch. These are typically labeled as “Gigabit Ethernet” or “10 Gigabit Ethernet” fiber ports. Only insert the optical module into a port designed for that transceiver type to avoid damage or link failure (Cisco WS-C3750G-12S-S, for example, has dedicated SFP ports for fiber connections) . 2. Choose the Compatible Transceiver: Select the correct SFP/SFP+ module based on your fiber type and distance requirements:Multimode fiber (MMF): e.g., 1000BASE-SX, 850 nm, up to 550 mSingle-mode fiber (SMF): e.g., 1000BASE-LX, 1310 nm, longer distancesDirect Attach Copper (DAC): for short-range connections using twinax cables . 3. Insert the Module Safely:Handle the module carefully to prevent electrostatic discharge (ESD) or physical damage.Align the module with the port and insert gently until it clicks into place. Do not force it, as this can damage the port or transceiver .Ensure the fiber cable is clean and properly terminated before connecting. 4. Verify the Connection:Use the switch CLI or management interface to check the optical module status. Commands like show fiber-ports-optical-transceiver on Cisco switches display link status, module type, and operational information .Confirm that the link LED on the switch port indicates a successful connection. 5. Safety Considerations:Even though most SFP modules are Class 1 laser safe, avoid looking directly into the fiber end.Ensure proper grounding and follow manufacturer guidelines to prevent damage to the switch or transceiver . By following these steps, the optical module will be correctly connected to the core switch, ensuring reliable fiber optic communication and minimizing the risk of network issues.