Cisco DWDM-SFP10G-40.56
10GBASE-DWDM 1540.56 nm SFP10G (100-GHz ITU grid), Original Cisco
Product Highlights
Scaling your 10 Gigabit Ethernet infrastructure across metro or core DWDM networks demands transceivers that deliver precise wavelength alignment, reliable long-haul performance, and seamless platform integration. The Cisco DWDM-SFP10G-40.56 is an original Cisco 10GBASE-DWDM SFP+ transceiver module operating at 1540.56 nm — ITU-T C-Band Channel 46 on the 100-GHz grid.
Designed for deployment in Cisco switches, routers, and optical transport platforms, this fixed-wavelength SFP+ module supports multi-rate 10-Gigabit data rates spanning LAN (10GE), WAN (OC-192/STM-64), and OTU2/OTU2e applications. It connects over single-mode fiber via a standard LC duplex connector and includes Digital Optical Monitoring (DOM) for real-time visibility into operating parameters such as optical TX/RX power, bias current, temperature, and supply voltage.
As a genuine Cisco part, the DWDM-SFP10G-40.56 is fully validated for use across a broad range of Cisco platforms and is eligible for Cisco TAC support and SmartNet coverage. Its hot-swappable design supports pay-as-you-grow scalability, allowing network teams to add DWDM channels incrementally without service interruption — ideal for enterprises and service providers building or expanding high-density wavelength-multiplexed transport networks.
Features & Benefits
Fixed DWDM Wavelength — ITU Channel 46
The DWDM-SFP10G-40.56 operates at a fixed 1540.56 nm wavelength on the 100-GHz ITU-T C-Band grid (Channel 46). Fixed-wavelength DWDM modules simplify network design by eliminating tuning complexity — each channel is factory-set, ensuring precise spectral alignment with your DWDM mux/demux infrastructure.
Multi-Rate 10G Performance
Supporting data rates from 9.9 Gbps to 11.1 Gbps, this transceiver accommodates 10GE LAN, 10GE WAN (OC-192/STM-64), and OTU2/OTU2e applications in a single module. This multi-rate flexibility lets you deploy the same optic across Ethernet, SONET/SDH, and OTN environments, reducing spare inventory and procurement overhead.
Digital Optical Monitoring (DOM)
Built-in DOM provides real-time access to critical operating parameters — including optical output power, received power, laser bias current, module temperature, and supply voltage. These diagnostics enable proactive fault detection and faster troubleshooting, reducing mean time to repair (MTTR) and improving overall network uptime.
Hot-Swappable SFP+ Design
The compact SFP+ form factor plugs directly into any compatible SFP+ port on Cisco switches and routers. Hot-swap capability means you can install or replace transceivers without powering down the host device — critical for production environments where uptime is non-negotiable.
Original Cisco Quality & Support
As a genuine Cisco transceiver, the DWDM-SFP10G-40.56 is manufactured and tested to Cisco's specifications, carries a Cisco warranty, and is eligible for Cisco TAC support and SmartNet service contracts. This ensures full compatibility and peace of mind for mission-critical deployments.
Deployment Scenarios
Metro DWDM Transport
Deploy the DWDM-SFP10G-40.56 in metropolitan-area DWDM rings to multiplex multiple 10G channels over a single fiber pair. The fixed 100-GHz channel spacing integrates cleanly with standard DWDM mux/demux equipment, enabling cost-effective bandwidth scaling across campus or city-wide fiber plants.
Enterprise Data Center Interconnect (DCI)
Connect geographically separated data centers over DWDM infrastructure at 10 Gbps per wavelength. The module's DOM capabilities provide the real-time link health visibility that operations teams need to maintain SLA compliance on critical inter-site replication and disaster recovery links.
Service Provider Core & Aggregation
Service providers can leverage the multi-rate capability of this transceiver to carry 10GE, OC-192, or OTU2 traffic across their DWDM backbone. The fixed wavelength simplifies channel planning in large-scale deployments where each lambda is permanently assigned to a specific service or customer circuit.
General
Optical
Performance
Physical
Environmental
Compliance
Compatibility Notes
The Cisco DWDM-SFP10G-40.56 is supported across a wide range of Cisco platforms with SFP+ ports. Always consult the Cisco 10-Gigabit Ethernet Transceiver Modules Compatibility Matrix (available on cisco.com) and your platform's release notes for the minimum required IOS/IOS-XE/NX-OS software version. Common compatible platform families include:
- Cisco Catalyst 3650, 9200, 9300L, 9400 (LC-24XS), 9500 series
- Cisco Nexus 3000, 5000, 7000, 9000 series
- Cisco ASR 1000, 9000 series routers
- Cisco Catalyst 8300 / 8500L Edge platforms
Note: This is a fixed-wavelength module on the 100-GHz ITU grid. It requires a matching DWDM mux/demux channel filter aligned to 1540.56 nm (Channel 46). It is not tunable — for tunable alternatives, see DWDM-SFP10G-C.
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| DWDM-SFP10G-C | Cisco 10G DWDM Tunable SFP+ (50-GHz) | Tunable across 96 ITU 50-GHz wavelengths — ideal for sparing flexibility, but requires EDC PHY on the host board. |
| DWDM-SFP10G-39.77 | Cisco 10G DWDM SFP+ 1539.77nm (C47) | Adjacent 100-GHz channel (C47) at 1539.77 nm — use when Channel 46 is already allocated in your DWDM plan. |
| DWDM-SFP10G-41.35 | Cisco 10G DWDM SFP+ 1541.35nm (C45) | Adjacent 100-GHz channel (C45) at 1541.35 nm — another neighboring wavelength option for channel expansion. |
| DWDM-SFP10G-C-S | Cisco 10G DWDM Tunable SFP+ S-Class | Tunable S-Class with limiting interface (no EDC required) — simpler host compatibility but Ethernet-only data rates. |