Cisco UCS 2104XP FEXes
Figure 8: Cisco UCS 2104 IO Module
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Connectionports (to thefabric interconnect)3Fabricextender status indicator LED1
Captivescrews for theinsertion latches4Linkstatus indicator LEDs2
CiscoUCS 2100 Series FEXes bring the unified fabric into the blade server enclosure, providing 10 Gigabit
Ethernetconnections between blade servers and the fabric interconnect, simplifying diagnostics, cabling, and
management.
TheCisco UCS 2104 (N20-I6584) extends the I/O fabric between the fabric interconnects and the Cisco UCS
5100Series Blade Server Chassis, enabling a lossless and deterministic Fibre Channel over Ethernet (FCoE)
fabricto connect all blades and chassis together. Because the FEX is similar to a distributed line card, it does
notdo any switchingand is managed as an extension of the fabric interconnects. This approach removes
switchingfrom the chassis, reducing overall infrastructure complexity and enabling the Cisco Unified
ComputingSystem to scale to many chassis without multiplying the number of switches needed, reducing
TCOand allowing all chassis to be managed as a single, highly available management domain.
TheCisco 2100 Series also manages the chassis environment (the power supply and fans as well as the blades)
inconjunction with the fabric interconnect. Therefore, separate chassis management modules are not required.
CiscoUCS 2100 Series FEXes fit into the back of the Cisco UCS 5100 Series chassis. Each Cisco UCS 5100
Serieschassis can support up to two FEXes, enabling increased capacity as well as redundancy.
Cisco UCS 5108 Server Chassis Installation Guide
OL-20035-05 17
Overview
Cisco UCS 2104XP FEXes