Cisco WS-X2841-2820 FDDI Fibre Module for Cisco 2800 Series is a fiber-based FDDI interface card that installs in a Cisco 2800 Series ISR chassis to provide FDDI connectivity. The module is described as a FDDI Fibre Module (Fibre, SAS) for C2800 chassis, enabling the router to attach to FDDI networks via fiber cabling—typically used for backbone connections or links to servers and storage backbones. FDDI is a 100 Mbps token-passing network, and this module brings fiber media support to the Cisco 2800 platform, expanding the router’s interface options for fiber backbone integration while remaining compatible with other Cisco interfaces within the same chassis.
