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- Description
- Specifications
WSP-Q40GLR4L is the Cisco 40GBASE-LR4L QSFP module for single-mode fiber, also called QSFP-LR4-Lite. It links up to 2 kilometers over standard G.652 single-mode fiber through a duplex LC connector, and it is interoperable with 40GBASE-LR4 up to that distance.
The nominal wavelength is 1310 nm, carried on four lanes at 1271, 1291, 1311 and 1331 nm. Per-lane average transmit power runs from -10 to 2.3 dBm and receive power from -13.7 to 2.3 dBm. The link budget is 4 dB, enough to cover the loss from patch panels in a data center, and the module guarantees a link bit error ratio of 1E-12 at 2 km.
Power consumption is 3.5 W. The module is a Class 1 laser product with a yellow pull tab, and its outer dimensions are at most 13.5 x 18.4 x 72.4 mm, weighing 100 grams or less. It operates from +10 to +60 degrees C.
Cisco switches and routers with QSFP ports support it, and the Cisco Optics-to-Device Compatibility Matrix confirms which platforms and software releases accept WSP-Q40GLR4L.
| Designation | WSP-Q40GLR4L |
| Standard | 40GBASE-LR4L |
| Fiber | single-mode G.652, duplex LC |
| Reach | up to 2 km |
| Wavelength | 1310 nm nominal |
| Link budget | 4 dB |
| Power consumption | 3.5 W |
| Laser class | 1 |
| Form factor | QSFP, 13.5 x 18.4 x 72.4 mm maximum |