Cisco offers a broad range of Industry compliant Xenpak, X2 and XFP modules for 10 Gigabit Ethernet deployments.
Xenpaks are supported on Cisco routers and some Catalyst switches. The small formfactor X2s are supported on the Cisco Catalyst Switches. XFPs are supported on Cisco routers with Shared Port Adapter (SPA).They provide customers a dual-rate interface for 10 Gigabit Ethernet and Packet-over-SONET/SDH (POS) connectivity.
Cisco currently supports many different port types where each one is optimized for the reach and transmission media demanded by a particular 10 Gigabit application.