The Cisco switch product lines are widely deployed globally, in large part due to the flexibility they provide for add-on options. Not only does the Cisco IOS have the richest set of features available relative to any other network operating system, but the IOS is tailor fit to each Cisco networking device, switches in particular.

To illustrate the options available, which are literally too voluminous to list here, we focus on the Catalyst 3560 switches. The Catalyst 3560 switches have Switch Form-Factor Pluggable (SFP) ports that support a number of SFP transceiver modules. Here is a list of the SFP modules supported on one or more types of 3560 switches:

Fast Ethernet SFP Modules

Gigabit Ethernet SFP Modules

10 Gigabit Ethernet SFP Modules

40 Gigabit Ethernet and 100 Gigabit Ethernet modules are supported on high-end Cisco devices, such as the Catalyst 6500, the CRS router, the ASR 9000 series router, and the Nexus 7000 series switch.