OSL Layer 1
Physical layer singal coversion
transmitter and receiver
usually in a single component
traffic in both directions with single fiber
use two different wavelengths
Extend a copper wire over a long distance
convert it to fiber, and back again
provides a modular interface
add the transceiver that matches your network
4 channel SFP=four 1 Gbit/s=4Gbits
QSFP+ is four channel SFP+=Four 10 Gbit/sec=40
You have fiber
The switch only has a copper ports
Many different types
and designs
quad small form-factor pluggable
4-channel sfp=four 1 Gbit/s
QSFP+ is four channel SFP+ four 10 gbit/sec= 40 Gbit/sec
Almost always powered
Especially fiber to copper
small form-factor pluggable
commonly used to provide 1 gbit/fiber
combine four SFPS into a single transceiver
cost saving in fiber and equipment
two fiber
transmit and receive
enhanced small
exactly the same physical size as SFPs
support data rates up to 16 Gbit
common with 10 Gigabit ethernet
Bi-Directional (BiDi) QSFP and QSFP+
additional efficiency over a single fiber run