Administrator Guide

automatically loading pre-defined configurations and boot images that are stored in file servers. You can
use BMP on a single switch or on multiple switches.
FC Flex IOM module is a field-replaceable unit (FRU). Its memory type is electrically erasable
programmable read-only memory (EEPROM), which enables it to save manufacturing information, such
as the serial number. It is hot-swappable, assuming that the module that is removed is replaced by the
same type of module in that same slot.
The FC Flex IO does not have persistent storage for any runtime configuration. All the persistent storage
for runtime configuration is on the FN IOM baseboard.
With both FC Flex IO modules present in the FN IOM switches, the power supply requirement and
maximum thermal output are the same as these parameters needed for the M1000 chassis.
Each port on the FC Flex IO module contains status indicators to denote the link status and transmission
activity. For traffic that is being transmitted, the port LED shows a blinking green light. The Link LED
displays solid green when a proper link with the peer is established. If there is no connectivity, the LEDs
are not lit
The FN IOM switches continue to operate in FCoE Gateway mode even if connectivity to a ToR switch
does not exist.
Active fabric manager (AFM) is compatible with FC Flex IO modules.
All SNMP MIBs that are supported for FN IOM switches apply equally for FC Flex IO modules. The
interface MIB indicates the FC interface when you install the FC flex IO module. The interface MIB
statistical counters compute and display the FC interface metrics.
When the Dell Networking OS sends FC frames (the initial FLOGI or FLOGO messages), or converts
FLOGI to FDISC messages or processes any internally generated FC frames, the software computes and
verifies the FC cyclic redundancy check (CRC) value before sending the frame to FC ports.
Fabric worldwide name (WWN) verification is available for eight FC ports. Single-switching WWN
capability is provided when the switch operates in NPIV mode.
Ensure that the NPIV functionality is enabled on the upstream switches that operate as FC switches or
FCoE forwarders (FCF) before you connect the FC port of the FN IOM to these upstream switches.
While storage traffic traverses through FC Flex IO modules and the Ethernet uplink port-channel status
changes (with DCB enabled on an adjacent switch), FCoE traffic is disrupted. This problem does not
occur if Ethernet traffic is not involved and only FCoE traffic is transmitted. Also, if DCB on the ToR
switch is disabled, traffic disruption does not occur.
Port Numbering for FC Flex IO Modules
Even-numbered ports are at the bottom of the I/O panel and for modules odd-numbered ports are at the top
of the I/O panel. When installed in a PowerEdge M1000e Enclosure, the FN IOM ports are numbered 33 to 56
from the bottom to the top of the switch. The following port numbering convention applies to the FC Flex IO
module:
In expansion slot 0, the ports are numbered 41 to 44.
In expansion slot 1, the ports are numbered 49 to 52.
FC Flex IO Modules 1048