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GLC SFP Transceiver

GLC SFP Transceiver

Q1: What is a GLC SFP transceiver?

A GLC SFP transceiver is a compact, hot-swappable optical module used to connect network devices (like switches, routers, and servers) over fiber or copper cables. It provides Gigabit Ethernet (1G) connectivity.

Q2: What are the types of GLC SFP transceivers?

GLC-SX-MMD – 1G short-range (850nm) multimode fiber, up to 550m

GLC-LH-SMD – 1G long-range (1310nm) single-mode fiber, up to 10km

GLC-ZX-SMD – 1G extended-range (1550nm) single-mode fiber, up to 80km

GLC-T – 1G RJ-45 copper, up to 100m over Cat5e/Cat6 cable

Q3: hat is the difference between single-mode and multi-mode SFP?

Single-mode (SMF) – Uses a small core fiber for long-distance transmission (up to 80 km).

Multi-mode (MMF) – Uses a larger core fiber for shorter distances (up to 550 m).

Q4: Can I mix different SFP types in the same switch?

Yes, as long as each port uses the correct matching SFP and cable type. However, both ends of a link must use compatible transceivers (e.g., SX to SX, not SX to LX).

Q5: Are GLC SFP modules hot-swappable?

Yes. You can insert or remove GLC SFP modules without shutting down the system, minimizing network downtime.

Q6: How do I choose the right GLC SFP for my network?

Transmission distance (100m, 550m, 10km, or 80km)

Fiber type (SMF or MMF)

Connector type (LC or RJ45)

Wavelength (850nm, 1310nm, or 1550nm)

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