Cisco® QSFP-40G-LR4 Compatible 40GBase-LR4 QSFP+ Transceiver
The ADD-ON 40GBase-LR4 QSFP+ transceiver is engineered for high-performance data center and enterprise networks requiring long-distance fiber connectivity. This Cisco-compatible QSFP+ module delivers 40Gbps throughput over single-mode fiber (SMF) up to 10 kilometers, making it ideal for campus backbone links, disaster recovery connections, and metropolitan area networks. With TAA compliance and DOM (Digital Optical Monitoring) support, this transceiver ensures reliable, monitored performance in mission-critical environments.
Key Features
- 40GBase-LR4 protocol support with 40Gbps data rate
- Single-mode fiber (SMF) transmission up to 10km distance
- Wavelength range 1270nm to 1330nm for CWDM compatibility
- Duplex LC connector for standard fiber patch cord integration
- DOM (Digital Optical Monitoring) for real-time performance metrics
- Cisco QSFP-40G-LR4 pin-compatible design
- TAA (Trade Agreements Act) compliant for government procurement
- Hot-swappable module design for zero-downtime upgrades
Technical Specifications
| Specification |
Details |
| Manufacturer |
ADD-ON |
| Part Number |
UCLA-QSFP-40G-LR4-AO |
| Protocol |
40GBase-LR4 |
| Data Rate |
40 Gbps |
| Fiber Type |
Single-Mode Fiber (SMF) |
| Maximum Distance |
10 kilometers |
| Wavelength Range |
1270nm to 1330nm |
| Connector Type |
Duplex LC |
| DOM Support |
Yes |
| Compliance |
TAA Compliant, Cisco Compatible |
| Form Factor |
QSFP+ (Quad Small Form-factor Pluggable) |
Frequently Asked Questions
What is a 40GBase-LR4 QSFP+ transceiver used for?
A 40GBase-LR4 QSFP+ transceiver is used to connect network switches, routers, and servers over long-distance single-mode fiber links. It's ideal for data center interconnects, campus backbone networks, and metropolitan area network (MAN) deployments where 40Gbps throughput and extended reach (up to 10km) are required.
Is this transceiver compatible with Cisco equipment?
Yes, this ADD-ON module is Cisco QSFP-40G-LR4 compatible, meaning it works with Cisco Nexus, UCS, and other platforms that support standard QSFP+ form-factor transceivers. It maintains full pin and protocol compatibility with Cisco's original modules.
What does DOM (Digital Optical Monitoring) provide?
DOM enables real-time monitoring of transceiver health metrics including optical power levels, temperature, and voltage. This allows network administrators to proactively detect signal degradation, fiber issues, or module failures before they impact network performance.
Can this 40GBase-LR4 transceiver work with existing LC fiber cables?
Yes, the duplex LC connector design allows direct connection to standard LC-terminated single-mode fiber patch cables already deployed in most enterprise networks, simplifying installation and reducing cabling costs.
