Even when using compatible SFP+s at both ends of the right cable, it is key that both of your devices support SFP+. Some brands allow you to use only their own. If two modules with similar appearances are not noticed, they may be mixed or optical modules of the same size may be inserted into the wrong switch port. Taking 1G SFP optical modules and 10G SFP+optical modules as examples, they. Since they're both similar in size, an SFP port can easily fit into one meant for SFP+, and it will still work, but there will be a significant drop in transmission rates. In these cases, the connection won't be realized as expected or won't work at all. Take 1G SFP and 10G SFP+ for an example. An. This section describes how to install optical transceivers on the SFP or SFP+ ports and connect them to the ports of the peer device using optical fibers according to the network plan. The optical modules at both ends are. Protocol Support: Modules must support matching transmission protocols such as Ethernet (1G, 10G, 25G, 40G, 100G, 400G), Fibre Channel, SONET/SDH, or OTN. Wavelength and Fiber Type: Single-mode or multimode fiber compatibility, wavelength (850nm, 1310nm, 1550nm), and optical power budget all.