The module allows stacking over SFP+ ports and provides stacking bandwidth of up to 40 Gpbs over longer distance. It can be used to stack switches across wiring closets on different floors of a building or across different buildings in a campus.

The FlexStack extended fiber module has two SFP+ ports. The SFP+ transceivers supported on these ports are listed in the compatibility matrix. Choose appropriate SFP+ transceivers based on the distance required between switches.

Stacking topologies with FlexStack extended fiber modules

Individual Cisco Catalyst 2960-X or 2960-XR Series Switches spread across multiple wiring closets on different floors of a building or in different buildings of a campus can be stacked with the FlexStack extended fiber modules. Up to eight switches can be stacked together. Stacking bandwidth is 40 Gbps.