Cisco SFP-10G-LR VS SFP-10G-SR, what is the difference

Question: what is the difference between the SFP-10G-LR and SFP-10G-SR

 

Answer: The Cisco 10GBASE SFP+ modules (Figure 1) offer customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications.

 

Cisco SFP-10G-LR

The Cisco 10GBASE-LR Module supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652). 10GBASE-LR 1310nm SMF.

Transmit Power： -8.2 to 0.5. Receive Power (dBm): -14.4 to 0.5. Transmit and Receive Wavelength: 1260 to 1355. Bail Latch Color: Blue.

 

Cisco SFP-10G-SR

The Cisco 10GBASE-SR Module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible.

Transmit Power： -7.3 to 1.2**. Receive Power (dBm): -9.9 to 1.0. Transmit and Receive Wavelength: 840 to 860. Bail Latch Color: Beige.

More information, you can refer to: http://www.cisco.com/en/US/prod/collateral/modules/ps5455/data_sheet_c78-455693.html