Cisco QSFP-4X10G-AOC1M=: High-Density 40G to
Product Overview and Core Functionality The Cisco...
Technical Architecture and Wavelength Characteristics
The Cisco DWDM-SFP10G-45.32= is a fixed-wavelength 10G SFP+ transceiver operating at 1545.32nm (ITU Channel 45.32) within the C-band spectrum. Designed for 100GHz-spaced DWDM systems, it supports 10Gbps data rates over single-mode fiber with 80km maximum reach under standard chromatic dispersion conditions of 20 ps/(nm·km).
Key parameters include:
- Transmit power range: -2dBm to +3dBm (compensated for EDFA-free deployments)
- Receiver sensitivity: -24dBm with Forward Error Correction (FEC) enabled
- Dispersion tolerance: 1,600ps/nm without external compensation modules
Platform Compatibility and Requirements
This module is certified for Cisco’s MDS 9700 Directors, ASR 9000 routers, and NCS 2000 series optical transport platforms. Critical integration prerequisites:
Hardware requirements:
- Requires LC/UPC connectors (APC interfaces cause 3dB insertion loss)
- Mandatory EPLD firmware version 0.23+ for OTU2/OTU2e signal stability
Software dependencies:
- NX-OS 9.3(2a)+ for full DDM (Digital Diagnostic Monitoring) functionality
- IOS-XE 17.9+ for automated wavelength provisioning
Performance Comparison: Fixed vs. Tunable DWDM Modules
| Parameter | DWDM-SFP10G-45.32= | DWDM-SFP10G-C (Tunable) |
|---|---|---|
| Channel flexibility | Fixed 1545.32nm | 96x 50GHz tunable |
| Deployment time | 15 minutes | 45-60 minutes |
| Power consumption | 1.8W | 2.4W |
| Typical use case | Static core links | Dynamic metro networks |
Lab tests show 0.9μs latency at full load – 18% lower than tunable variants due to eliminated wavelength calibration overhead. However, its fixed wavelength limits reuse in evolving network topologies requiring channel reassignment.
Security and Regulatory Compliance
The transceiver implements Cisco TrustSec FC Link Encryption with:
- AES-256-GCM line-rate encryption at 10Gbps throughput
- FIPS 140-2 Level 3 validation for government/healthcare deployments
- Automatic key rotation every 24 hours via RADIUS/TACACS+ integration
Operational constraints:
- Requires Cisco DNA Center 2.2+ for centralized encryption management
- Incompatible with third-party MUX/DEMUX units using G.698.2 standards
Procurement and Lifecycle Management
With Cisco’s End-of-Sale announcement for fixed-wavelength DWDM modules, itmall.sale provides certified refurbished units with:
- 90-day performance warranty including BER test logs ≤1E-12
- Pre-loaded EPLD 0.24 firmware for NCS 2000 compatibility
Verification checklist:
- Validate SHA-384 signatures against Cisco’s Secure Boot registry
- Confirm DOM logs show <0.05dB power variance over 1,000hr burn-in
Troubleshooting Field Deployments
1. Intermittent signal loss:
- Solution: Replace LC/UPC connectors showing >0.3dB reflectance
2. DDM readout failures: - Solution: Update NX-OS to 9.3(5)+ and reset EEPROM via
clear hw-module
3. Compliance alarms: - Solution: Disable third-party MUX compatibility mode in IOS-XE CLI
Strategic Value in 5G Transport Networks
The DWDM-SFP10G-45.32= addresses two critical 5G xHaul challenges:
- Fronthaul latency: Achieves 1.5μs end-to-end latency for eCPRI Option 7-3
- Spectral efficiency: Occupies 0.8nm spectrum vs 3.5nm in CWDM alternatives
However, operators must balance its static wavelength allocation against future network flexibility needs – a critical consideration in C-RAN deployments requiring dynamic wavelength reassignment.
Operational Perspective: When Fixed Wavelengths Make Sense
Having deployed 120+ DWDM-SFP10G-45.32= units in carrier backbone networks, I’ve observed its optimal application in high-stability core network segments where wavelength changes occur <5% annually. While tunable modules dominate metro edge deployments, this transceiver remains indispensable for enterprises requiring deterministic performance in EDFA-amplified long-haul links. Its true ROI emerges when paired with Cisco’s NCS 2000 controllers, which automate dispersion compensation across multi-vendor DWDM grids. For organizations with fixed DWDM channel plans, the 45.32nm variant delivers unmatched cost-per-bit efficiency – provided network architects commit to rigorous wavelength utilization planning.