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Cisco GLC-BX-D SFP transceiver module with LC connector

Cisco Systems, Inc.

Cisco Systems, Inc. GLC-BX-D= 1000BASE-BX10 Downstream SFP transceiver

SKU CH-YREQ-PR94R

Single-mode SFP transceiver for 1 Gbps links up to 10 km using 1490-nm TX and 1310-nm RX wavelengths over LC connectors with digital optical monitoring

  • Port count1 x LC
  • Optical wavelength1490-nm TX/1310-nm RX wavelength
  • Maximum rangeUp to 10 km
  • Transfer speed1 Gbit/s
  • HighlightsConnectivity Media: G.652 µm Single-mode Fiber Application/U
  • Product weight0.15
  • 1 Gbps data rate over single-mode fibre
  • 10 km reach on a single LC connector
  • Hot-swappable SFP form factor for zero-downtime changes
  • 1490 nm TX / 1310 nm RX wavelength pair
  • Digital optical monitoring for link health visibility

Cisco GLC-BX-D= SFP for 1 Gbps single-mode links

The Cisco GLC-BX-D= is a hot-swappable SFP transceiver delivering 1 Gbps over a single strand of G.652 single-mode fibre. It uses 1490 nm for transmit and 1310 nm for receive, reaching up to 10 km. The module fits switches such as the Catalyst 2960 series and ME 2400. Digital optical monitoring provides real-time link health data.

Distance and wavelength constraints

This bidirectional optic requires a matching upstream module operating at the complementary 1310 nm TX and 1490 nm RX wavelengths. The 10 km reach assumes standard G.652 fibre with low splice loss and clean connectors. Exceeding the rated distance or using multimode fibre will cause link failure. Only one LC duplex port is available per module.

Compatibility and patch-cord checks

Verify that your switch model appears in the supported list before ordering. Confirm the patch cord is single-mode with LC connectors and the correct polish for the port. Ensure the opposite end uses the paired upstream BX transceiver. No configuration is needed beyond inserting the module into a compatible Gigabit Ethernet slot.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $860.99
Pricier than about 90% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameCISCO
Model nameGLC-BX-D=
Performance
Transfer speed1 Gbit/s
Connectivity
Optical wavelength1490-nm TX/1310-nm RX wavelength
Maximum rangeUp to 10 km
Ports & slots
Port count1 x LC
Size & build
Shipping weight0.45 kg
Package size147 × 140 × 5 mm

Questions about this item

Should I choose the downstream or upstream wavelength version for my link?

This module transmits at 1490 nm and receives at 1310 nm; pair it with an upstream module that does the opposite.

What does the 1 Gbps rate mean when the transceiver is installed in a switch?

The port will negotiate a 1000 Mbps full-duplex Ethernet link over single-mode fibre.

Which LC single-mode fibre standard does the 10 km reach assume?

The distance rating is based on G.652 single-mode cable with standard attenuation.

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