GLC-BX-D-BCC | Cisco Compatible 1GB BiDi Transceiver - 10km (1000BASE-BX-D)

Q: Will this work in place of the Cisco GLC-BX-D?
A: Yes. The GLC-BX-D-BCC is fully compliant with IEEE 802.3ah 1000BASE-BX10-D, matching the form factor, data rate, wavelengths and reach of the Cisco GLC-BX-D. It is plug-and-play in any Cisco switch or router with SFP ports that support 1000BASE-BX modules.

Q: Which Cisco platforms support this transceiver?
A: This transceiver is compatible with Cisco switches and routers that support SFP modules and 1000BASE-BX operation, including Catalyst 2960, 3560, 3650, 3750 series switches and ISR routers. Verify your specific platform supports BiDi SFPs and DOM if diagnostic monitoring is required.

Q: Why must this be paired with a 1000BASE-BX10-U module?
A: BiDi operation requires complementary wavelength pairing. The GLC-BX-D-BCC transmits at 1490nm and receives at 1310nm. The opposite-end module must transmit at 1310nm and receive at 1490nm (BX-U specification) to establish bidirectional communication over a single fibre strand. Two BX-D modules or two BX-U modules will not link.

Q: Can this transceiver operate over multi-mode fibre?
A: No. The 1490nm and 1310nm wavelengths are optimized for single-mode fibre only. Multi-mode fibre exhibits excessive attenuation at these wavelengths and will not support the 10km reach. Only use OS1 or OS2 grade single-mode fibre with simplex LC connectors for this transceiver.

Q: How do I monitor link health using DOM on this module?
A: If your Cisco platform supports SFF-8472 DOM, you can read real-time optical power levels (transmit and receive), temperature, laser bias current and supply voltage via CLI commands such as 'show interfaces transceiver' or equivalent. Monitor received power to detect fibre degradation before link failure, and compare transmit power against datasheet specifications to identify aging laser diodes.