GLC-LX-SM-RGD-BCC | Cisco Compatible 1GB Single-Mode 10km (1000BASE-LX) Rugged / Industrial

Q: Will this work in place of the Cisco GLC-LX-SM-RGD?
A: Yes. The GLC-LX-SM-RGD-BCC is functionally identical to the Cisco GLC-LX-SM-RGD, sharing the same SFP form factor, 1.25Gb/s data rate, 1310nm wavelength, and IEEE 802.3z 1000BASE-LX/LH compliance. It operates plug-and-play in any Cisco switch or router port that accepts the original module.

Q: Which Cisco platforms support this rugged SFP?
A: This module is designed for Cisco Industrial Ethernet switches and routers requiring extended temperature operation, including platforms with SFP slots that support 1000BASE-LX/LH transceivers. Compatibility depends on the host device supporting industrial-grade SFPs with -40 to 85 degree Celsius temperature ratings, not on specific model numbers.

Q: Can I use this on multimode fiber, and do I need mode conditioning?
A: Yes, this module supports multimode fiber up to 550m on 62.5um or 50um MMF. However, when deployed over legacy 62.5/125um multimode fiber, a mode conditioning patch cable is recommended at the transmit side to minimize differential mode delay (DMD) and ensure clean signal transmission. Single-mode fiber deployments do not require mode conditioning.

Q: What is the maximum fiber span I can achieve without inline attenuation?
A: The module provides a 15 dB link budget (transmit power -3 to -9.5 dBm, receive sensitivity up to -20 dBm), which typically supports up to 10km on G.652 single-mode fiber. For shorter single-mode spans with very low loss (less than 8 dB total), you may need to insert a 10 dB inline optical attenuator at each receiver to prevent overloading, per Cisco SFP deployment guidelines.

Q: Does this module require a specific power-down sequence or initialization delay when hot-swapping?
A: No. As a hot-swappable SFP module, it can be inserted or removed from a powered SFP port without shutting down the host device. The host platform automatically detects the module via I2C communication and initializes the link. There is no manual initialization sequence required, though link establishment typically takes a few seconds after insertion.