Cisco SFP+ Series Transceiver Module SFP-10G-SR

The Cisco SFP+ Series Transceiver Module SFP-10G-SR delivers cost-effective 10 Gigabit Ethernet connectivity over multi-mode fiber optic cabling for short-reach applications within data centers and enterprise facilities. This short-reach transceiver supports transmission distances up to 400 meters on OM4 multi-mode fiber, making it ideal for high-density rack-to-rack connections, top-of-rack switching architectures, and intra-building network deployments.

Moreover, the SFP-10G-SR provides hot-swappable operation and digital diagnostic monitoring capabilities, thereby enabling flexible infrastructure design and proactive maintenance without disrupting network services.

Technical Specifications

Optical Performance

• Data Rate: 10 Gigabit Ethernet (10GBASE-SR)
• Wavelength: 850nm nominal
• Fiber Type: Multi-mode fiber (MMF) 50/125 or 62.5/125 micron
• Maximum Distance:
  • OM1 (62.5/125μm): 33 meters
  • OM2 (50/125μm): 82 meters
  • OM3 (50/125μm): 300 meters
  • OM4 (50/125μm): 400 meters
• Transmit Power: -7.3 dBm to -1 dBm typical
• Receiver Sensitivity: -11.1 dBm minimum
• Optical Connector: Duplex LC connector

Electrical Interface

• Host Interface: SFP+ (Enhanced Small Form-factor Pluggable)
• Data Rate Support: 9.95 Gbps to 11.1 Gbps
• Encoding: 64B/66B line encoding
• Signal Detect: Differential LVPECL outputs
• Power Supply: 3.3V single power supply
• Jitter Tolerance: Per IEEE 802.3ae specifications

Digital Diagnostics

• Monitoring Functions: Temperature, voltage, laser bias current, transmit power, receive power
• Alarm/Warning Thresholds: Configurable high/low limits for all monitored parameters
• Interface: I2C serial interface per SFF-8472 specification
• Calibration: Internal or external calibration options
• Update Rate: Real-time parameter updates

Physical Specifications

• Form Factor: SFP+ MSA compliant
• Dimensions: 56.5mm x 13.7mm x 8.5mm (2.2″ x 0.54″ x 0.33″)
• Weight: 30 grams (1.1 oz) typical
• Connector Type: Duplex LC optical interface
• Pull Tab: Metal or plastic extraction handle
• Latching: Bail clasp retention mechanism
• Laser Classification: Class 1 laser product per IEC 60825-1

Power & Environmental

• Power Consumption: 1.0W maximum
• Operating Temperature: 0°C to 70°C (32°F to 158°F) standard commercial range
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Operating Humidity: 5% to 85% non-condensing
• Storage Humidity: 5% to 95% non-condensing
• MTBF: Greater than 1,000,000 hours at 25°C

Compliance & Standards

• IEEE Standards: IEEE 802.3ae 10GBASE-SR
• MSA Compliance: SFP+ Multi-Source Agreement
• Diagnostic Monitoring: SFF-8472 Digital Diagnostic Monitoring specification
• Safety: UL 60950-1, CSA 60950-1, EN 60950-1, IEC 60950-1
• EMC: FCC Part 15 Class B, CE Mark, VCCI Class B
• RoHS: RoHS-6 compliant (lead-free manufacturing)
• Laser Safety: IEC 60825-1, FDA 21 CFR 1040.10 and 1040.11

Link Budget & Fiber Requirements

• Link Budget: Minimum 4.5 dB typical
• Modal Bandwidth:
  • OM3: 2000 MHz·km minimum
  • OM4: 4700 MHz·km minimum
• Connector Type Required: LC duplex multi-mode fiber patch cables
• Fiber Core/Cladding: 50/125μm (OM2/OM3/OM4) or 62.5/125μm (OM1)
• Cable Standards: ANSI/TIA-492AAAD (OM4), ANSI/TIA-492AAAC (OM3)

Use Cases & Applications

Data Center Top-of-Rack Switching

The SFP-10G-SR serves as the primary interconnect solution for top-of-rack (ToR) switching architectures connecting server access switches to aggregation or spine switches within data center facilities. Additionally, the transceiver’s cost-effectiveness enables high-density 10 Gigabit server connectivity without excessive per-port costs typical of long-reach alternatives.

Furthermore, the 400-meter reach on OM4 fiber accommodates typical data center row-to-core distances while supporting future expansion and reconfiguration without infrastructure limitations.

Server Direct-Attach Connectivity

Enterprise data centers utilize the Cisco SFP-10G-SR for direct server connectivity using 10 Gigabit Ethernet network interface cards equipped with SFP+ ports. Moreover, this deployment model supports virtualized server environments requiring high-bandwidth connectivity for storage area networks, virtual machine migration, and distributed application architectures.

Specifically, the low latency and consistent performance characteristics prove essential for database clusters, high-performance computing applications, and real-time analytics platforms.

Storage Area Network (SAN) Connectivity

Organizations implement the SFP-10G-SR for Fibre Channel over Ethernet (FCoE) and iSCSI storage networks connecting servers to storage arrays within data center environments. Notably, the transceiver’s reliable performance supports block-level storage protocols requiring deterministic latency and minimal packet loss.

Meanwhile, the cost advantages compared to native Fibre Channel solutions enable organizations to converge storage and data networks onto unified 10 Gigabit Ethernet infrastructure.

Campus Building Backbone

Enterprise campuses leverage the Cisco SFP-10G-SR for inter-building backbone connections where distances fall within the 400-meter capability of OM4 multi-mode fiber. Additionally, educational institutions, corporate office parks, and government facilities benefit from utilizing existing multi-mode fiber plant investments without requiring costly single-mode fiber installation.

Therefore, network upgrades from 1 Gigabit to 10 Gigabit Ethernet can proceed without infrastructure replacement when existing OM3 or OM4 fiber is already deployed.

High-Density Access Layer Aggregation

Data center operators deploy the SFP-10G-SR in high-density aggregation switches connecting multiple access layer switches supporting hundreds or thousands of server endpoints. Furthermore, the transceiver’s low power consumption and reduced heat generation enable maximum port density in space-constrained equipment rooms and telecommunications closets.

In addition, the hot-swappable capability facilitates non-disruptive capacity expansion and topology modifications supporting dynamic data center growth patterns.

Video Production and Media Networks

Broadcasting facilities and post-production studios utilize the Cisco SFP-10G-SR for high-bandwidth connectivity supporting uncompressed video workflows, shared storage access, and collaborative editing environments. Specifically, the sustained 10 Gigabit throughput accommodates 4K and 8K video file transfers between editing workstations, media servers, and centralized storage arrays.

Moreover, the low-latency characteristics support real-time video playback and multi-stream editing applications where network delay directly impacts creative workflow efficiency.

Enterprise Wireless Controller Connectivity

Organizations implement the SFP-10G-SR for connecting centralized wireless LAN controllers to core switching infrastructure supporting high-density wireless deployments. Additionally, the 10 Gigabit uplinks provide sufficient aggregated bandwidth for hundreds of access points serving thousands of concurrent wireless clients.

Consequently, enterprises can support bandwidth-intensive wireless applications including video conferencing, cloud-based productivity tools, and bring-your-own-device (BYOD) initiatives without wireless infrastructure becoming a network bottleneck.

Medical Imaging Network Infrastructure

Healthcare facilities deploy the Cisco SFP-10G-SR for picture archiving and communication system (PACS) networks connecting imaging modalities, workstations, and storage repositories within hospital campuses. Furthermore, the high bandwidth supports rapid transmission of large medical imaging studies including CT scans, MRI examinations, and digital pathology slides between departments.

In addition, the reliable connectivity ensures physicians and radiologists can access diagnostic images without delay, supporting quality patient care delivery and timely clinical decision-making.

Compatibility & Deployment

The Cisco SFP-10G-SR transceiver module maintains broad compatibility with Cisco networking platforms including Catalyst enterprise switches, Nexus data center switches, UCS fabric interconnects, and various server network interface cards supporting SFP+ form factor transceivers. Consequently, organizations can deploy consistent optical connectivity solutions across heterogeneous equipment portfolios while maintaining vendor support and warranty coverage.

For optimal performance, Cisco recommends using genuine Cisco transceivers with Cisco equipment to ensure full feature compatibility, access to technical support resources, and eligibility for hardware replacement under SmartNet service contracts. Additionally, the transceiver supports installation in third-party networking equipment complying with SFP+ MSA specifications, though compatibility verification with specific vendor platforms is recommended before large-scale deployment.

Furthermore, proper multi-mode fiber infrastructure including clean LC connectors, appropriate bend radius management, and OM3 or OM4 rated fiber cables ensures reliable operation and maximum transmission distance capability. Moreover, network administrators should utilize the digital optical monitoring features to establish baseline performance metrics during initial installation, enabling effective long-term performance tracking and proactive identification of fiber degradation or contamination issues.

In addition, organizations upgrading from 1 Gigabit to 10 Gigabit Ethernet should verify existing multi-mode fiber infrastructure grade and cable plant distance limitations before deploying SFP-10G-SR transceivers. Therefore, fiber characterization testing using optical time-domain reflectometers (OTDR) or power meter measurements can confirm suitability of existing infrastructure for 10 Gigabit Ethernet applications, avoiding costly troubleshooting after deployment.