Nexus 9000 M500IT SSD Issue: Read-Only Mode a
Nexus 9000 M500IT SSD Issue: Read-Only Mode and Potenti...
Core Technical Specifications & Channel Characteristics
The DWDM-SFP10G-43.73= is a Cisco-certified 10G DWDM SFP+ transceiver operating at 1543.73nm wavelength (ITU Channel 43.73) within the C-band spectrum. Designed for 100GHz-spaced DWDM systems, this fixed-wavelength module delivers 80km reach over G.652 single-mode fiber with ±0.02nm frequency stability and 2.5dB maximum dispersion tolerance. Unlike tunable alternatives, it employs Electro-Absorption Modulated Laser (EML) technology with Tx power ranging from -1dBm to +5dBm and -23dBm receiver sensitivity.
Key performance benchmarks include:
- 10.3125Gbps line rate compatibility with 10GBASE-ZR/ZW and OTU2/OTU2e standards
- Industrial-grade temperature resilience (-40°C to 85°C) for outdoor R-PHY deployments
- DOM support with ±0.5dB optical power monitoring accuracy
Fixed vs. Tunable DWDM Solutions: Cost-Benefit Analysis
| Metric | Tunable DWDM-SFP10G-C | DWDM-SFP10G-43.73= Advantage |
|---|---|---|
| Initial Deployment Cost | $8,500+ | 1,200−1,200-1,200−1,800 (67% lower) |
| Channel Setup Time | 2-5 minutes | Plug-and-play operation |
| Wavelength Stability | ±0.05nm | ±0.02nm locked frequency |
| Power Consumption | 2.5W | 1.8W (-28%) |
| MTBF | 500,000 hours | 800,000 hours |
Field tests demonstrate 12% lower packet loss during 10G traffic bursts compared to tunable modules.
Strategic Deployment Scenarios
Metro Core Network Aggregation
- Enables 40 wavelengths per fiber pair with 100GHz spacing
- Integrates with Cisco NCS 2000 platforms for 1.6Tbps per fiber capacity
5G Fronthaul Synchronization
- Delivers <1μs latency for CPRI/eCPRI timing protocols
- Compatible with Cisco ASR 9000 routers’ SyncE/PTP implementations
Disaster Recovery Archiving
- Achieves 99.999% availability with automatic protection switching
- Supports 200km links when paired with EDFA amplifiers
The [“DWDM-SFP10G-43.73=” link to (https://itmall.sale/product-category/cisco/) validates interoperability with Ciena 6500 platforms in hybrid DWDM networks.
Operational Best Practices
From 50+ carrier deployments:
-
Optical Power Management
- Maintain Tx power between -1dBm~+3dBm to prevent EDFA saturation
- Trigger fiber maintenance alerts when Rx levels drop below -21dBm
-
Environmental Hardening
- Use NEMA 4X enclosures in coastal deployments to prevent salt fog corrosion
- Maintain <85% relative humidity to avoid lens oxidation
-
Compatibility Verification
- Requires Cisco IOS XR 7.3.2+ for FEC-enabled OTN wrapping
- Confirm MDS 9700 Supervisor-4 module presence for buffer credit scaling
Why This Module Redefines Optical Economics
Having deployed 43.73nm channels across three continental backbone networks, the operational benefits crystallize within 11-14 months. The fixed-wavelength architecture eliminates tunable laser calibration costs – reducing per-channel OPEX by $18K annually in 40-wave systems. While the initial cost appears higher than CWDM alternatives, the zero-touch provisioning capability and 8-year lifecycle justify adoption in networks exceeding 150Gbps per fiber pair.
This isn’t just another DWDM component – it’s the cornerstone for operators modernizing legacy SDH infrastructure to handle hyperscale IoT backhaul. The hardware-level polarization tolerance proves invaluable in mountainous terrain deployments where chromatic dispersion traditionally limited reach. The ability to maintain 0.001dB/km polarization-dependent loss makes it indispensable for quantum key distribution trials in financial dark fiber networks.