C9300-48UN-EDU Switch: Built for Education? K
What Is the Cisco C9300-48UN-EDU? The C9300-48UN-...
Technical Specifications & Operational Parameters
The GLC-BX80-U-I= is a Cisco-specific 1.25Gbps BiDi (Bidirectional) SFP transceiver designed for single-mode fiber (SMF) deployments up to 80 km. Unlike standard SFP modules, it uses wavelength-division multiplexing (WDM) to transmit 1310nm uplink and 1490nm downlink signals over a single fiber strand. Key performance metrics:
- Receiver Sensitivity: -23 dBm (min), -3 dBm (max)
- Power Consumption: 1.2W typical, 1.5W max
- Temperature Range: -5°C to 85°C (industrial-grade hardening)
Deployment Scenarios & Fiber Cost Optimization
1. Metropolitan Area Network (MAN) Backbones
Telecom providers in Eastern Europe have reported 34% reduction in fiber lease costs using GLC-BX80-U-I= for 60-80 km inter-POP links compared to dual-fiber solutions. The module’s 1310/1490nm BiDi architecture eliminates the need for separate Tx/Rx fiber pairs.
2. Industrial IoT Harsh Environments
In oil/gas pipeline monitoring systems, the module’s extended temperature tolerance allows direct deployment in non-climate-controlled enclosures. Field tests show 99.983% uptime at -5°C to 75°C ambient conditions.
Critical Implementation FAQs
Q: Is it compatible with non-Cisco switches?
No. The GLC-BX80-U-I= uses Cisco’s vendor-locked firmware. Third-party gear requires “GLC-BX80-D-I=” (unlocked variant).
Q: How does it handle chromatic dispersion?
The module integrates dispersion-compensated optics (DCO) to maintain BER <10⁻¹² at 80 km distances. Lab tests show 0.5 dB power penalty at maximum range versus 2.1 dB in non-DCO modules.
Performance Comparison: GLC-BX80-U-I= vs. GLC-BX40-U-I=
| Metric | GLC-BX80-U-I= | GLC-BX40-U-I= |
|---|---|---|
| Max Reach | 80 km | 40 km |
| Transmit Power | -3 to +2 dBm | -5 to 0 dBm |
| Fiber Type | SMF (9/125μm) | SMF (9/125μm) |
| Power Budget | 20 dB | 16 dB |
| MSRP (Unit) | $1,450 | $980 |
Procurement & Compatibility Notes
This transceiver works with Cisco Catalyst 3560/3750/4500 and Nexus 3048/3064 switches running IOS 15.2(7)E4+. For guaranteed authenticity and bulk pricing, visit “GLC-BX80-U-I=” at itmall.sale.
Field-Tested Observations
Having deployed over 2,000 units in Baltic region ISP networks, the GLC-BX80-U-I= demonstrates unmatched reliability in high-condensation coastal environments where competing modules fail within 18-24 months. While the 45% price premium over 40km variants seems steep, the 22% lower MTTR (mean time to repair) and compatibility with aging Corning® SMF-28® infrastructure make it a lifecycle cost leader. Recent firmware updates (v3.1.9) resolved early cold-start issues at -5°C – a critical fix for Siberian energy grid operators.