Ethernet Standards (Fiber Optic)

• The Entire family of IEEE LAN Standards 202011220920 Ethernet Standards (Physical) that together define the Physical Layer & the Data-Link Layers of the Wired LAN technology is referred to as an Ethernet.

• Some Switch comes with built-in SPF ports that support the Optical Ethernet Standards, whereas some Ethernet switches come with Modular Ports where we can swap the normally used Ethernet ports to the Optical SPF/SPF+ ports which support SPF Modules with 10Gbps Standards.

Standard	Cable Type	Max Distance
10GBASE-LX4	MM	300m
10GBASE-S	MM	400m
10GBASE-LR	SM	10km
10GBASE-E	SM	30km

Reference:

CCNA 200-301 OCG, Volume 1, Pg. 48 - Wendell Odom.