I have a new Cisco SG 300-20 L3 switch. It comes with 18+2 Ethernet ports. The last 2 ports have been designated as SFP ports - small form factor pluggable. They're also known as miniGBIC ports - miniGigabit Interface Converter ports. The Cisco manual explains the SFP ports as follows:
"SFP ports are connection points for modules, so the switch can link to other switches. ... SFP ports are compatible with Cisco modules MGBT1, MGBSX1 ... as well as other brands of modules".
My question is: Can I connect to my ISP's WiFi/Router using one of these SFP ports, or should I be using any one of the other 18 "standard" Ethernet ports? The ISP's WiFi/Router is also a Layer 3 switch, but I do not understand the implication of the word 'module' as documented in Cisco's manual.
Would be grateful for some guidance, advice or tips.
Thanks in advance.