Owners Manual

PowerEdge FX2/FX2s mapping
configurations
This section provides the following information on the connectivity of the compute sleds to the I/O module(s), PCIe slots, and
Chassis Management Controller (CMC) of the enclosure:
● LAN On Motherboard network and compute sled to I/O module port mapping configurations
● Expansion Bus and compute sled to PCIe expansion slot mapping configurations
● Internal management network
NOTE: The I/O module port mapping and PCIe slot mapping from compute sleds are pre-configured.
Topics:
• LAN On Motherboard network
• I/O module and PCIe mezzanine card configuration guidelines
• Configuring network settings for the I/O module
• Expansion bus
• Internal management network
LAN On Motherboard network
LAN On Motherboard (LOM) network refers to the Ethernet connectivity provided to the compute sleds by the I/O modules
installed at the back of the PowerEdge FX2/FX2s enclosure.
LOM network provides four connections per half-width compute sled, two connections per quarter-width compute sled, and
eight connections per full-width compute sled for a maximum of 16 lanes. The maximum external connections possible are 16
RJ-45 Ethernet ports.
Supported I/O modules
The enclosure supports up to two switches or pass-through modules. The maximum width for an Ethernet pass-through module
is eight lanes.
The following I/O modules are supported on the enclosure:
● Dell PowerEdge FN 410S I/O Module
● Dell PowerEdge FN 410T I/O Module
● Dell PowerEdge FN2210S I/O Module
● PowerEdge FX2 and FX2s 1 Gb x8 RJ45 pass-through module
● PowerEdge FX2 and FX2s 10 Gb x8 SFP+ pass-through module
○ The 10 Gb pass-through module supports both 10 GbE SFP+ and 1 GbE SFP optical module. The 10 Gb pass-through
module supports 1 Gb and 10 Gb connections.
○ Use SFP+ to configure 10 Gb pass-through module and SFP or 1 Gb TOR switch to configure 1 Gb pass-through module.
○ Using a dual-rate optical module for a 1 GbE connection on the 10 Gb pass-through module results in an invalid link.
○ Use a dual-rate SFP+ optical module to configure a 10 GbE connection.
○ To establish optical links between two 10 Gb pass-through modules, an external rack switch must be used as an
intermediary. Direct optical connection (using SFP modules, SFP+ modules, and Directed Attach Copper cables) between
two 10 Gb pass-through modules is not supported.
NOTE: This restriction is not applicable for Direct Attach Copper connections or to the 1 Gb pass-through module.
NOTE: For more information on the I/O modules, see the I/O module documentation at Dell.com/poweredgemanuals.
3
22 PowerEdge FX2/FX2s mapping configurations