To connect an optical cable to an SFP module, use the appropriate patch cord (e., LC-LC, SC-LC, etc. The patch cord must match the fibre type – single-mode or multi-mode. Once connected, verify that the port activity indicator is on and run diagnostic commands to check the. Small Form-factor Pluggable modules (SFP module) are the workhorses of modern network connectivity, enabling flexible fiber optic or copper links between switches, routers, firewalls, and servers. 1G/10G SFP+: Standard for Gigabit and 10 Gigabit Ethernet. 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.