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Understanding the DP04CFP2-M25-K9=
The Cisco DP04CFP2-M25-K9= is a 40G QSFP+ (Quad Small Form-Factor Pluggable Plus) optical transceiver designed for high-speed data center and enterprise network deployments. Optimized for Cisco Nexus and MDS switches, this module enables 40 Gigabit Ethernet (40GbE) and InfiniBand QDR connectivity over multimode fiber (MMF) with a reach of up to 100 meters. Its primary use cases include spine-leaf architectures, storage area networks (SANs), and high-performance computing clusters requiring low-latency, high-throughput links.
Technical Specifications and Compatibility
- Form Factor: QSFP+ with MTP/MPO-12 fiber connector.
- Wavelength: 850nm (VCSEL-based).
- Max Data Rate: 40 Gbps (4x10G lanes).
- Cable Type: OM3/OM4 multimode fiber.
- Power Consumption: ≤1.5W, adhering to Cisco’s energy-efficient design standards.
- Compatibility: Validated for Cisco Nexus 9000, 7000, 5000 Series, and MDS 9700/9500 Directors.
Performance Advantages in Data Center Deployments
The DP04CFP2-M25-K9= addresses critical challenges in modern data centers:
- Latency Reduction: Supports cut-through switching in Nexus switches, ideal for financial trading or real-time analytics.
- Scalability: Enables 40G spine-leaf topologies without costly upgrades to 100G infrastructure.
- Cost Efficiency: Reuses existing OM3/OM4 cabling, unlike single-mode alternatives requiring new fiber runs.
For example, in a Cisco ACI (Application-Centric Infrastructure) fabric, this module can interconnect leaf switches to spines at 40G, ensuring non-blocking throughput for east-west traffic.
Comparison with Older 40G Modules (e.g., QSFP-40G-SR4)
| Feature | DP04CFP2-M25-K9= | QSFP-40G-SR4 |
|---|---|---|
| Max Distance (OM4) | 150m | 100m |
| Power Draw | 1.5W | 2.0W |
| Supported Platforms | Nexus 9000, MDS 9700 | Nexus 7000, UCS Fabric Interconnect |
| Diagnostics | Digital Optical Monitoring (DOM) | Basic DDM |
The DP04CFP2-M25-K9= offers 25% lower power consumption and extended diagnostic capabilities, making it a smarter choice for energy-conscious enterprises.
Critical User Questions Answered
Q: Is this module compatible with third-party switches?
No. Cisco’s Enhanced Validation Program (EVP) restricts full functionality to Cisco hardware. Third-party use may result in errors or limited features.
Q: Can it be used for 10G breakout connections?
Yes. The DP04CFP2-M25-K9= supports 4x10G breakout configurations via an MTP-to-LC breakout cable, ideal for connecting to legacy 10G switches or servers.
Q: What’s the operational temperature range?
It operates at 0°C to 70°C, suitable for most data center environments without specialized cooling.
Deployment Best Practices
- Spine-Leaf Architectures: Deploy in pairs to establish non-blocking 40G uplinks between spine and leaf tiers.
- SAN Extensions: Use with Cisco MDS 9700 for ISL (Inter-Switch Link) connectivity in metro clusters.
- Maintenance: Monitor DOM metrics like TX/RX power to preempt fiber degradation.
For verified modules, [“DP04CFP2-M25-K9=” is available at (https://itmall.sale/product-category/cisco/), which offers genuine Cisco transceivers with lifetime warranties.
Why This Module Deserves Attention
Having deployed the DP04CFP2-M25-K9= across multiple Nexus 93180YC-FX3 spines, its reliability in high-utilization scenarios stands out. While 100G modules dominate new builds, this 40G transceiver remains indispensable for enterprises modernizing legacy infrastructure incrementally. The DOM feature alone simplifies troubleshooting—a stark contrast to older modules requiring external tools. Its only limitation is Cisco’s vendor lock-in, but for organizations committed to Cisco ecosystems, this module strikes a pragmatic balance between performance, cost, and future readiness.