GLC-BX-D Cisco Compatible 1G SFP BiDi 10km SMF Transceiver

Built for single-fiber access spans where a second strand isn't on the table, the GLC-BX-D is a 1G BiDi SFP reaching 10km over one strand of single-mode fiber. As the BX-D downstream unit, it terminates one end of a BiDi pair through a simplex LC connector, comes up coded to the host with no setup, and reports DDM telemetry once the link is up.

• Form Factor: SFP
• Data Rate: 1G
• Fiber Type: SMF
• Reach: 10km
• Connector: Simplex LC
• OEM Equivalent: GLC-BX-D

Compatibility: Documented OEM compatibility (Cisco published compatibility documentation): this module is accepted in 1G SFP ports on the ASR 9000 Series, ASR 920 Series, Catalyst 1000 Series, Catalyst 9200 Series, Catalyst 9300 Series, Catalyst 9400 Series, ISR 4000 Series, NCS 540 Series, and Nexus 9300 Series. This module follows Cisco's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.

Pairs with: GLC-BX-U — BiDi runs over a single fiber strand; this D unit pairs with one U unit at the far end.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

Tested for compatibility with Cisco platforms, it pairs against a BX-U unit at the far end to run both directions on the single 10km strand. MSA-compliant and bench-verified for diagnostics before shipment. Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In stock — ships same or next business day.